 Triumph windscreen buffeting
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Joined: Mar 2005
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Complete Newb
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OP
Complete Newb
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After fitting a Triumph roadster windscreen I was a bit surprised and disappointed with the amount of buffeting I experienced. It is pretty good up to about 85 km/h, but above this the buffeting is very bad. Have tried adjusting it within the limitations of the brackets, but no major improvement. Anybody had similair problems and found a way of adjusting the screen to reduce/remove buffeting ?
//Tiv
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Learned Hand
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Learned Hand
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Buffeting of what? Bike? Front end? Head? Body? Never ridden behind a windscreen, so don't know what it is like.
Warren
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Loquacious
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Loquacious
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memphis lowers, i had the same problem and they fixed it. not i get almost no buffeting at all
Frank
(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves
NOW-2010 silver and black tbird
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Learned Hand
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Learned Hand
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Buffeting seems to be a common problem. Several of us have had a bit of reduction by installing Memphis Shades Lowers, part number MEM9891. Curiously enough, it seems a lot of air comes from below the screen and the lowers help. A quick indicator is to ride at the speed that causes the most buffet and put your left forearm across your chest (sounds a little weird, but it works for some of us). This would give an idea whether lowers would help or not. If not, you may have to go with a screen that allows for adjustment (sorely lacking with the Triumph screen mount).
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Loquacious
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Loquacious
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I have the Memphis Shades 19" Fats, with lowers. I have had them both in every conceivable position and head buffeting never stopped. Get a WindVest, or a cheap SpitFire.
Ride Safe,
Dennis
Triumph, it's how I live and what I ride.
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Re: Triumph windscreen buffeting
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Joined: Apr 2006
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Loquacious
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Loquacious
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Try moving the screen higher up the fork tubes and keeping it more vertical. I'm guessing you're over 6 foot tall? I'm over 6 foot and deal with it. It's still better than without the screen. Good luck!
Kevin - Luceo Non Uro
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Re: Triumph windscreen buffeting
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Adjunct
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Had the same with mine. They're overpriced junk as far as I'm concerned. The Memphis lowers cut the head buffeting down some, but not entirely. Last year I bought a small Givi screen for less than $100 and couldn't be happier with it. Makes the bike look sportier, no more buffeting and far more adjustment capability,
Thunderpipes, 135 mains, TBS needles, snorkel & AI removed
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Check Pants
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Check Pants
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Windscreens sound like seats, handlebar configurations, foot pegs etc. In that "one size doesn't fit all". I have the roadster screen and haven't had the head buffeting problem many others experience. The top of the screen is on a line between my chin and adam's apple, so according to the recommended height stuff I read, that is 3-4" too short. Could be my "head density" I am reminded of ocassionally overcomes the buffeting forces  . I agree it's a pricey bit, like most branded aftermarket parts. I have been tempted to try the "oversized" Clearview shield out of curiousity, but to date haven't sprung for a $160 experiment. A couple years ago there was some discussion here regarding the benefits of adding headlight visors to reduce buffeting. I have headlamp and lightbar visors, how much to they reduce overall buffeting is an open question. Twenty five years ago I was a firm resident of the "real motorcycles don't have windshields" camp  . That guy still shows up once in awhile  . JH
"It's not what I say that's important, it's what you hear" Red Auerbach
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Re: Triumph windscreen buffeting
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Joined: Mar 2005
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Complete Newb
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OP
Complete Newb
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Hi SpeedMaster05,
I am 6 foot tall. Funnily enough, the buffeting was reduced the further away from the vertical position that I went with the screen. Unfortunately though, there is not a great deal of adjustment in the standard brackets. I have been thinking about putting in some spacers between the lower mounts and the screen to increase the rake of the thing, and was hoping somebody else had already tried this with good results.
//Tiv
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Oil Expert
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Oil Expert
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Quote:
Funnily enough, the buffeting was reduced the further away from the vertical position that I went with the screen. Unfortunately though, there is not a great deal of adjustment in the standard brackets. I have been thinking about putting in some spacers between the lower mounts and the screen to increase the rake of the thing
For my memphis fats the rake adjustment was critical to getting the air moving smoothly past me. It ended up raked about the same as the forks. Note that as you rake it you're also moving the top lip a bit closer to you.
I think you just have to play with whatever adjustment you've got. For me this involved dremel-ing brackets, swapping sides for the brackets and lots of experimentation.
I also think the lowers are important with the big roadster-style screens.
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Re: Triumph windscreen buffeting
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Joined: Feb 2006
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3/4 Throttle
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3/4 Throttle
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What's the best place to buy a set of Lowers??
05 TBA Mulberry/Silver, Thunder Bike pipes, K&N single Filter, 132 main Jet's, Snorkles Removed
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Re: Triumph windscreen buffeting
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Joined: Oct 2005
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Adjunct
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throb,
Which Givi did you buy and how tall are you. I've seen a couple of recommendations for the Givi and am thinking of buying one.
Bill
2005 Triumph America
2011 BMW R1200RT
2013 V-strom DL650
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Re: Triumph windscreen buffeting
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I bought a Roadster Screen against the advice of my local dealer. I had so much buffeting that I could hardly read road signs. Bill (the owner) of Millerbilt Small Engines /( Triumph), graciously offered to trade me for a Summer screen. I took him up on the offer and the buffeting is greatly reduced. Oh, I'm 5'9" so the Roadster screen was slightly too tall ( I could barely see over it and some of my vision was affected by the refraction of light at the edge), but the Summer screen works great for me.
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Learned Hand
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Learned Hand
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Quote:
I bought a Roadster Screen against the advice of my local dealer. I had so much buffeting that I could hardly read road signs. Bill (the owner) of Millerbilt Small Engines /( Triumph), graciously offered to trade me for a Summer screen. I took him up on the offer and the buffeting is greatly reduced. Oh, I'm 5'9" so the Roadster screen was slightly too tall ( I could barely see over it and some of my vision was affected by the refraction of light at the edge), but the Summer screen works great for me.
6'1" with a Summer Screen. It keeps wind off the chest, but the buffeting to my large mis-shaped Polish head is rather intense.
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Oil Expert
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Oil Expert
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I've read all of the windscreen threads here, and as previously stated, "one size does not fit all".
Other things I think might be factors are the type of helmets worn (full face? open face?), the riders size, the SM or America bars (riding position?), speeds ridden at, and maybe others.
I have been generally pleased with most of the Triumph product I have tried, but $300-$400 is steep for experimentation.
I, too, am considering a fly screen, or smaller windscreen like that Viper someone had.
Other product info is always appreciated - not near enough yet in the tech vault.
Keith
Houston
Ridin'Texas
'04 Speedmaster
AI removed, Pingle, UNI Filter, 1 shim, straight-through slash-cut TORs, Stage 1 DynaJet, 140 mains, 3 turns, 16/42 final drive, 115K
2020 T120 Black
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Re: Triumph windscreen buffeting
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Joined: Aug 2005
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Loquacious
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Loquacious
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Probably the main factor is how tall you sit in the saddle. The Triumph screens don't seem to work very well for taller riders. The Summer Screen starts getting unpleasant for riders over 5'8". The Roadster Screen slightly taller. If you are anywhere near 6' tall, don't buy either. I don't know about Memphis Shades, but both Clearview and Windvest have a money back guarantee. I bought the Summer Screen and on my ride home realized it was not going to work. The dealer woudn't take it back. I'm currently waiting for a Clearview replacement that is taller and will fit the factory brackets. It will be the 4th screen I've tried, but I feel confident it will be the best compromise for me. I'm almost 6'1".
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: Triumph windscreen buffeting
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Joined: Jan 2006
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Monkey Butt
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Monkey Butt
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Bill hit it pretty well. When we used to setup the Hondas way back when my hair was not grey the factory guys said the screen should be the same rake as the forks or you don't make an air cusion behind it. We looked at them like deer in the headlights thinking that will slip all the air right at his head.
Didn't work that way though. It made a stream of air much more rider friendly at an upward angle thus pushing the onslaught of air the bike was pushing through up and over the riders head. By tilting the screen forward more we sent air down. The air going over the screen created lift thus drawing the air from below right into the driver.
Ever ride in a convertible? Ever notice how your hair blows forward. Thats the cusion of air. Up over the windshield then it circulates back like a bubble. Its called an air cusion. So the air from ahead of you runs up and over the cusion not the shield itself.
Mythbusters did that a year or so ago with a pick-up proving you get an air cusion in the bed when the gate is up. When you drive with the gate down you don't and actually increase resistence from the front end. result tail gate down = less fuel economy.
hmmm, where is this ramble goin, oh yeah, tilt it back as close to the rake of the forks as you can and adjust from there.
I try to aggravate one person a day. Today may be your day.
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Re: Triumph windscreen buffeting
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I've got the small flyscreen (on a Speedmaster) - purely because it came with the bike when I bought it - but having got used to it, I'd never remove it.
I'm 5 10, and it seems to cut down on a lot of the buffeting I've noticed riding a friends Speedmaster.
CHAOS, MAYHEM, DISORDER ................................ my work here is done
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Re: Triumph windscreen buffeting
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I have the larger Triumph flyscreen on my 03 America. Get noise but not alot of buffeting. I am thinking of a full size windshield. But I also have this thing about using as much Triumph parts as possible (purest with alot of dust in my wallet) so I am looking at the Roadster screen from Triumph but cost is steep.
A Dyslexic Man Walks Into A Bra
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Re: Triumph windscreen buffeting
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Joined: Nov 2005
Posts: 32
Greenhorn
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Greenhorn
Joined: Nov 2005
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I recently received my clearview sheild. I bought the +2 size, two inches taller than the stock roadster screen. I'm 5'11". What a difference! The buffeting that made my teeth chatter at 70 MPH is gone. Highly recommended.
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Re: Triumph windscreen buffeting
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Joined: Apr 2006
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Complete Newb
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Complete Newb
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I just ordered the largest clearview replacement for the trimph roadster screen. I am 6ft2in tall I hope this provides much improvement to what I am use to.
Any feedback would be appreciated.
Wings and Wheels
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Oil Expert
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Quote:
I hope this provides much improvement to what I am use to. Any feedback would be appreciated.
It does. I'm your length and I've had the Clearvew repl. for more than two years now and don't miss the headbanging from the oem roadster screen. Since then I've also put on Memphis lowers that took away some of the updraft as well. I wish the lowers were adjustable though...
"Wise men speak because they have something to say, fools because they have to say something."
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Re: Triumph windscreen buffeting
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Complete Newb
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Complete Newb
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I'm 6'4" and the large Clearview works pretty good for me on my 04 Speedmaster.
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Re: Triumph windscreen buffeting
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hi guy's, im new to all this just registerd with your site. well to the point. i too have the problem with buffeting with the triumph summer screen,on the ride home from the dealers i had the feeling of wasteing my hard earned folding stuff,i have made some extension brackets that tilt the screen ,when you look at it from the side its almost upright,common sense should have told triumph designers that its not an ideal angle for air flow?.im no rocket scientist but i came to this conclusion when washing the bike and rinseing it off with a hose pipe,spraying the water directly at the screen you can see how its dispersed, much like how the air would be acting when on the move. i'm 5`10" and with the adjustment(trial and error)im just about happy with itnow i can cruise all day at 85mph(uk)aprox 130kph?.if its a bit windy i put my feet on the back pegs this is more of a sports bike position but it seems to lower my head height just enough and also makes you sit with a straighter back,as rideing long distances seem to make me slouch and end up with a bad back. well ive boared you all to sleep now. hope this was some help. Alan Smith
ALAN
bikes n beer..is there more to life?
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Re: Triumph windscreen buffeting
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Joined: Aug 2005
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Loquacious
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Loquacious
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I also had the same experience driving off with my new Triumph SS. You might want to check out this thread: http://www.bonnevilleamerica.com/forums/...p;page=4#118063At 5'10" this new shield would work great for you and looks as good as the stock one.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: Triumph windscreen buffeting
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Silvergator, I am using a Givi 605-A and love it. Bigger than a Flyscreen, but not a full size screen. I am 6'0" and have it set a pretty sharp angle. It moves the wind right over the top. Picture is here
'05 America - Tec 2-1 (from a Thruxton)/ 4 pot caliper/ Kurt's Rearsets /
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Re: Triumph windscreen buffeting
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Monkey Butt
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Monkey Butt
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Quote:
I have the Memphis Shades 19" Fats, with lowers. I have had them both in every conceivable position and head buffeting never stopped. Get a WindVest, or a cheap SpitFire.
I had exactly the same experience. It seemed that no matter where I put the lowers the buffeting was excessive. I solved the problem by making some new lowers about 5 inches longer than the ones in the kit. I used some 1/4 inch plexiglass and cut it with the same top and bottom shape as the Memphis Shades ones. Worked like a charm, just cut VERY SLOWLY as plexiglass melts if the blade moves too quickly.
We all like to think of ourselves as rugged individualists. But when push comes to shove most of us are sheep who do what we are told. Worst of all, a lot of us become unpaid agents of whoever is controlling the agenda by enforcing the current dogma on the few rugged individualists who actually exist.
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Re: Triumph windscreen buffeting
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Joined: Feb 2006
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3/4 Throttle
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3/4 Throttle
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Dardoonk:
Was this Givi 605-A a direct bolt on or did you have to modify something to make it fit?? I didn't see any ref to our TBA's on their site.
05 TBA Mulberry/Silver, Thunder Bike pipes, K&N single Filter, 132 main Jet's, Snorkles Removed
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Re: Triumph windscreen buffeting
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Iceman,
The Givi is a handlebar mount & comes with 1" clamps. If I recall correctly when I bought it, it said it was for 7/8" bars, but actually they use a small adapter that fits inside the 1" clamp.
The only thing I did change was not required. I have T-style drag bars and wanted to clamp to the risers so everything looked real clean. In order to do this & make it look decent, I cut a couple of inches off the steel rods that fit between the brackets.
You can call Givi USA direct @ 704-679-4123. This is the number for their wholesale distribution location in Charlotte, NC. They will sell direct to customers though. Since I live here, I just stopped by and picked one out.
'05 America - Tec 2-1 (from a Thruxton)/ 4 pot caliper/ Kurt's Rearsets /
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Re: Triumph windscreen buffeting
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Joined: May 2006
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Complete Newb
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Complete Newb
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When I bought my Speedmaster, I was already used to riding my Harley with a screen. When I first got the Harley, I found the standard screen to be annoyingly at the exact wrong height. The top of the screen was right at my line of sight, so I would find myself trying to sit up taller to look over the screen or squatting down lower to look through the screen (I'm 5'8"). I purchased a second Shorty screen for the Harley so I could easily see over the top, and it has worked great. When I got the Speedmaster I quickly decided I needed a screen becuase I like to ride wearing an open face helmet. After reading several threads on this board, I purchased a Memphis slims 15". This has made a world of difference. I still get a little wind, because I am looking over the top of the screen, but it is much better than without a screen. I can now comfortably cruise at 75-85 mph on the freeway with a 3/4 helmet and no tearing or severe head buffeting. I also like the Memphis slims narrower shape, because to me it seems to look better on the Speddmaster than the wider Memphis Fats.
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Re: Triumph windscreen buffeting
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Joined: Jul 2006
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Complete Newb
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Complete Newb
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I used a Clearview screen on my last bike. It was superior in quality to the Honda OEM one. And they make 'em to fit the bike's unique attachment configuration. Can't praise 'em highly enough. They come in various sizes too. HR http://www.clearviewshields.com/
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Re: Triumph windscreen buffeting
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Joined: May 2006
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Loquacious
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Loquacious
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I tested an old ebay acquired 21 & 1/2" tall Memphis Fats screen last night on my Speedmaster. I had the screen tipped back a bit past paralell to the forks. I'm 6 feet tall, and the top of the screen fell right into my line of sight, so it's off of the bike, and back to ebay next week. It did push the wind up and over pretty well, but I found that if I crouch down, I wasn't happy about looking through a windshield to see the road ahead. That's no fault of the Memphis screen, just my preferences.
I road tested the bike with no shield, but the updraft on my Shoei St Tropez half helmet wasn't something I want to live with, so I'll bolt up the Roadster screen again for now. The Shoei has a lot of surface area on the bottom edge, and may grab the wind a bit more than other types of helmets. I can't say for sure. I imagine the helmet visor is a large part of the updraft too.
I'm convinced that in my situation, my helmet is part of the windscreen buffetting issue. When I attach a snap on full face shield, it cuts the buffetting down to almost zero.
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Re: Triumph windscreen buffeting
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Quote:
Quote:
I have the Memphis Shades 19" Fats, with lowers. I have had them both in every conceivable position and head buffeting never stopped. Get a WindVest, or a cheap SpitFire.
I had exactly the same experience. It seemed that no matter where I put the lowers the buffeting was excessive. I solved the problem by making some new lowers about 5 inches longer than the ones in the kit. I used some 1/4 inch plexiglass and cut it with the same top and bottom shape as the Memphis Shades ones. Worked like a charm, just cut VERY SLOWLY as plexiglass melts if the blade moves too quickly.
Ladisney: Where did you mount the brackets on the longer lowers? In The middle? Or did you put the extra length at the top or bottom? Go any pics?
I wondered why the frisbee was getting bigger......and then it hit me.
'05 BA - Mulberry/Graphite,128 mains,42 pilots,TBS needles,drilled slides,debaffled stock pipes,Uni,no snorkel
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Re: Triumph windscreen buffeting
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Monkey Butt
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Monkey Butt
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Pretty much in the middle. I'll take some pics and post them.
We all like to think of ourselves as rugged individualists. But when push comes to shove most of us are sheep who do what we are told. Worst of all, a lot of us become unpaid agents of whoever is controlling the agenda by enforcing the current dogma on the few rugged individualists who actually exist.
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Re: Triumph windscreen buffeting
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Hi Everyone,
I have the factory Triumph roadster screen and am 6' 5" tall. Helmet buffeting is horrible and is made worse by the fact I wear glasses. I feel like I'm riding out an 8.0 earthquake when ever I get into a strong headwind. Is anyone out there near my 6' 5" height, riding with windscreen, and not getting shaken up by wind buffeting? If so please let me know how your bike is setup. I'd love to be able to adjust my Triumph screen to make it work but I think I'm just too high above the top edge.
Thanks!
~The Tall Dude~
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Re: Triumph windscreen buffeting
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I'm 6'-3" and I can't figure out how you even fit on the bike! I have a Memphis shades screen sitting in the garage because I could never get the buffeting to stop. I figure that it's just not possible to get a screen on our bikes that will work for someone over 6'-2" or so. I have read in some previous posts that the visors on the headlight and driving lights help with the buffeting (not sure how - but I do remember seeing it somewhere) I just never got around to trying it.
Women and cats will do as they please. Men and dogs should just get used to that fact and relax
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Re: Triumph windscreen buffeting
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Joined: Jan 2005
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Oil Expert
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Oil Expert
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Clearview makes a replacement screen for taller riders. It's 4" higher and 2" wider. I've had that one for three years now. Works like a charm w/o rattling your brain around... http://www.clearviewshields.com/
Hope this helps! 
"Wise men speak because they have something to say, fools because they have to say something."
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Re: Triumph windscreen buffeting
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Joined: Feb 2006
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3/4 Throttle
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3/4 Throttle
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I, like piper am using the Clearview replacement only mine is for the summer screen and it also is a work of art. Head buffeting is gone but I do get some air comming up from the side/frontof the tank so I'M ordering a set of lowers from Fast Eddy and going to give that a try!
If you need anything Give Fast Eddy a try you won't be sorry you did!
05 TBA Mulberry/Silver, Thunder Bike pipes, K&N single Filter, 132 main Jet's, Snorkles Removed
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 Re: Triumph windscreen buffeting
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Hi Piper,
Are you 6'5"ish? How tall are you? I would love to try a taller windscreen but can't afford to spend $150 on an experiment.
Thanks
~John~
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Re: Triumph windscreen buffeting
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Loquacious
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John, if you have the stock Roadster screen see if you can get a relative measurement. With the bike on level ground set a yardstick over the top of the windshield holding it level (may need another person to sight) and see where it hits you. It needs to be between your mouth and nose (ideally) to stop the buffeting and wind hitting your face. By measuring where it hits, you can figure about how many inches higher it would need to be.
Cleaview Shield's largest Roadster replacement is 20" (4" higher than stock) and probably better than the factory one. If that 4" gets above your mouth (yardstick level) it should do the trick. I don't know of one taller available.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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