 Front end shimmies, anybody else?
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Since my bike was new (last summer ) I have felt a little wiggle in the handlebars at times. I recently installed a clearview windshield which is larger than my stock Triumph roadster shield, this seemed to amplify the problem. As an experiment I took the shield off and took the bike out for a ride. The shimmy is hardly noticeable as long as both hands are on the grips, but if I get on a straight stretch of road and release the grips it immeadiately starts wobbleing. The bike is still under warranty so off to the dealer I went. They checked to see if the front wheel was true, tire pressure, steering head bearings were tight they even removed the front wheel and rebalanced it and still no improvement. I left with them saying that they were going to contact the factory and see what they recommend. I can't think of anything left except replacing the front tire. Anybody else have a shimmy in thier front end? 
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 Re: Front end shimmies, anybody else?
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Fe Butt
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Fe Butt
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Many on here have replaced the front tire and it went away. Wendys bike had this problem and I replaced her front tire and it hasn't done it since. Not saying that is your problem but it seem that was the cause for most that have experienced it.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Did you change the style of tire too? I have the Metzler Lasertech on the front. Has this been discussed before? I did a thread search on it and didn't find anything , maybe I didn't ask the great oracle the right question.
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 Re: Front end shimmies, anybody else?
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Check Pants
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Mines' been doing it again this season. Last time, it was when the front tire was really worn. Went away with replacement. I put on Metzler ME880's and while they have plenty of treadware left, they are pretty old with just over 19,000 miles on the tire (yikes!). So, I'll just replace this winter. Definitely with another Mezt ME880!
Al
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 Re: Front end shimmies, anybody else?
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I've got the ME 880 on the rear and I know they have a matching front tire I don't know why it came with the lasertech on the front. I like the looks of the ME880 better.
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 Re: Front end shimmies, anybody else?
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Fe Butt
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Fe Butt
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I put a Michlin on hers, Would have to look to see what model it was as I forget.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Metzeler considers and sells the Lasertec as the match to the ME880 rear tire.
Last edited by Thensley; 10/21/2008 10:59 PM.
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 Re: Front end shimmies, anybody else?
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Loquacious
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 Re: Front end shimmies, anybody else?
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Fe Butt
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The Michelin I put on Wendys was the Pilot or something like that, not the Lasertec.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Check Pants
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Quote:
Rear wheel lined up?
That's a darned good question. I just eye-ball the chain tension markings. There is probably a more precise way, anyone have something to offer?
Al
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 Re: Front end shimmies, anybody else?
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I'm bettin it's a bad tire, new or not!
Fidelis et Fortis
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 Re: Front end shimmies, anybody else?
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Learned Hand
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Learned Hand
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I had the same thing happen to me. When I replaced the orig. Bridgestone tires with Avon Venoms it went away.
if life gives you lemons keep them because hey,free lemons.
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 Re: Front end shimmies, anybody else?
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I had a duh moment and wrote Michelin originally when I should have written Metzeler.
Long time observer of the human condition.
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 Re: Front end shimmies, anybody else?
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Hate the Bridgestones... I'm not sure whether it's because my riding improved, but the Bridgestone on the 06 lasted 2000 miles longer. I've gone on to a Metzeler now - but not a Lazertec (apparently they couldn't get one....) I think an ME22 Perfect, and it is a whole lot better. Stopped the following the ruts in the road, the shimmies everything.
Gina
03 America - Pretty stock - except the TBS wheel... 
06 America - missing, presumed in bits. With it's TBS wheel... 
09 America - It's very blue....
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 Re: Front end shimmies, anybody else?
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Could be wind-steer. Try it with the shield off.
Steelheart- '03 Speedmaster Black/Yellow
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 Re: Front end shimmies, anybody else?
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Worn Saddle
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Quote:
Quote:
Rear wheel lined up?
That's a darned good question. I just eye-ball the chain tension markings. There is probably a more precise way, anyone have something to offer?
I place a 12" straight edge against the face of the sprocket and sight down it along the chain. It's pretty easy to judge whether or not it's lined up along the edges of links.
A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)
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 Re: Front end shimmies, anybody else?
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Check Pants
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Good tip, I'll check mine. Quote:
Quote:
Quote:
Rear wheel lined up?
That's a darned good question. I just eye-ball the chain tension markings. There is probably a more precise way, anyone have something to offer?
I place a 12" straight edge against the face of the sprocket and sight down it along the chain. It's pretty easy to judge whether or not it's lined up along the edges of links.
Al
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 Re: Front end shimmies, anybody else?
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Lots of previous posts. Do a search on Wobble or Shimmy or posts from midlifecrisis go back 1year.
I had problem with the stock Metz after 1,200Km. Tried everything. Took it to dealer. They replaced front tyre under warranty,(with the same brand) problem went away now have 7,000kms. It is a known issue so you should have no problem with warranty replacement.
Apparently the tyres go out of round. Balancing, both dynamic and static, do not indicate this problem. It only happens under load.
Adventure before Dementia...
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 Re: Front end shimmies, anybody else?
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Seen it three times this riding season. Tires it is.
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 Re: Front end shimmies, anybody else?
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Here is an update....The dealer checked all the mechanical suspects, no improvement. The dealer e-mailed the factory with the question, what should we do next? No reply from the factory. So I called Triumph USA in Georgia and was told " We don't warranty tires , they are considered normal wear items. I said that the tires only have 2800 miles on them and still have the nibs on them from the manufacturing process, and I didn't consider the problem to be normal or reasonable, I said it is a safety issue. He told me I would have to take it up with the manufacturer, so I called Metzler and was told that I would have to take it to a distributer( 50 miles away) and have it looked at and he may have to call a district rep to approve it and they may or may not warranty it. So I called the dealer back and told him my story and asked him if he wanted to do the right thing and fix this for me and he replied " what do you mean? Buy you a new tire? " and I said yes ,that is what I'm asking. He said " No I can't do that" So I guess I'm on my own here , my only choice seems to buy my own tire or drive myself crazy chaising my tail. 
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 Re: Front end shimmies, anybody else?
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I've go the issue too... Lasertech with less than 2500 miles on the front and It started shimmying at all speeds anytime you let go of the handlebars you better hold on for a wild ride. Well, they tightened the headstock at the dealer and told me to get rid of the trashed fork oil ( 11200 miles ) Thats when I put in the 20 wt oil. Well, it is better but still shakes like a girl in a horror film between 30 and 60 mph. Now they are telling me its because I cut 2 inches out the rear springs and put the bags on it... Well, those mods were done before the tire and the issue with the shaking started after the tire.... Hmmmm, well, im getting a new Dunlop tomorrow to get me through my trip to Mexico on her next week, then this winter she will be getting Maxxis Wide Whites anyway, No more Lasertechs for me.....
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 Re: Front end shimmies, anybody else?
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Saddle Sore
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I never had the problem with the original Bridgestones, but had the problem with the 4 sets of Avons since. After 2000 - 3000 miles the shimmy would show up.... After talking to other riders and Googling my brains out, here are the suggested reasons why it happens. (not all will apply to your bike's set up, but it will set the stage for another good argument...  ) Triple tree bearing adjustment. Tire pressure. Broken spoke - front or rear wheel. Bent wheel - front or rear. Unbalanced tire - front or rear. Bad wheel bearings - front or rear. Bad swingarm bearings. Bad chain alignment. Improper windshield adjustment. Uneven accessory placement on the handlebars. (GPS, toaster oven, cup holder, etc..) Tire cupping - front or rear. One site said all motorcycle tires cup - it is just the nature of the design. Dissimilar tread pattern between front and rear tires. Tire damage - skidding, hitting curbs, etc. Flat spots. Too much weight on the rear (luggage + passenger - improper weight distribution). Twisted/tweaked front forks. My experience with the Avon Venoms has been that they grip like glue, but they cup very easily. The shimmy is always below 40mph. I recently ran a low mileage Avon on the rear and a low mileage Metzeler Lasertec on the front, and nothing I tried would stop the front from shimmying. Air pressure adjustments would help, but nothing would eliminate it. I am now running Dunlop D404's front and rear. Almost 2000 miles on them and no shimmy yet. And, I run them at the psi recommended on Dunlop's website, which just happens to be the same as Triumph recommends - 31 psi, front and rear. This is on an 03 America with a stock front wheel and a chromed Speedmaster rear wheel. Mileage results and shimmy reports on these may have to wait until spring....... If it were me, I'd ride the 50 miles and give the distributor a chance to make me happy. Tires are expensive.
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 Re: Front end shimmies, anybody else?
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Quote:
Here is an update....The dealer checked all the mechanical suspects, no improvement. The dealer e-mailed the factory with the question, what should we do next? No reply from the factory. So I called Triumph USA in Georgia and was told " We don't warranty tires , they are considered normal wear items. I said that the tires only have 2800 miles on them and still have the nibs on them from the manufacturing process, and I didn't consider the problem to be normal or reasonable, I said it is a safety issue. He told me I would have to take it up with the manufacturer, so I called Metzler and was told that I would have to take it to a distributer( 50 miles away) and have it looked at and he may have to call a district rep to approve it and they may or may not warranty it. So I called the dealer back and told him my story and asked him if he wanted to do the right thing and fix this for me and he replied " what do you mean? Buy you a new tire? " and I said yes ,that is what I'm asking. He said " No I can't do that" So I guess I'm on my own here , my only choice seems to buy my own tire or drive myself crazy chaising my tail.
NO, the dealer has to take it up with the manufacturer. If the bike is still under warranty, and this is not due to "normal" wear or abuse, then when you pick up the bike from the dealer, test drive it and bring it right back. Bottom line is there is a problem and the dealer needs to fix it. Not sure if lemon laws apply to motorbikes. I had no problem getting a tyre under warranty (I live in Australia but warranty is warranty).
Others on this forum had tyres replaced under warranty. Do a search, print out the posts and biuld a case.
If you are not happy, start writing (Customer Support Manager Triumph America, Better Business Bureau and the DOT Department of Transport(safety issue), and perhaps a small claims court session is in order if you still don't get any satisfaction. This is simply not acceptable.
Adventure before Dementia...
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 Re: Front end shimmies, anybody else?
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Fe Butt
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Quote:
Now they are telling me its because I cut 2 inches out the rear springs and put the bags on it...
That's BS I put 2" shorter shocks on Wendys bike and she has bags on it too and only time we had any handling issue was when her bike developed that same wobble. Changed the front tire and it has been fine since. The wobble didn't appear right after I lowered it either. Then there is Toms bike (brokenfixed) , his bike is lowered too and last time I test rode it his bike didn't wobble either. So tell your dealer to try again that argument doesn't hold water.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Here is the final word... I ordered a new Metzler ME880 from Drag Specialty and had it mounted and balanced today. This completely cured the problem, the bike rides like it is on rails. I can release the grips at fifty miles per hour and keep my hands off until the bike coasts down to fifteen miles per hour and the thing is ROCK STEADY! I then called Triumph America back and told them how this cured the problem and told them I would like them reconsider reimbursing me for the tire and mounting and SURPRISE! SURPRISE! they're going to do it, 100% . After much aggravation my faith has been restored. 
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 Re: Front end shimmies, anybody else?
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Check Pants
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Nice, that fixed my last issue as well. Did you speak to Pete Carleo at Triumph? Customer service seems to be his strong suit (he replaced my broken chrome chain guard last year). I was eyeballing my old ME880, it has a ton of tread depth left but there some dry rot cracking on the sidewall. I do have over 20k miles on my ME880, no wonder she shimmies a little! Quote:
Here is the final word... I ordered a new Metzler ME880 from Drag Specialty and had it mounted and balanced today. This completely cured the problem, the bike rides like it is on rails. I can release the grips at fifty miles per hour and keep my hands off until the bike coasts down to fifteen miles per hour and the thing is ROCK STEADY! I then called Triumph America back and told them how this cured the problem and told them I would like them reconsider reimbursing me for the tire and mounting and SURPRISE! SURPRISE! they're going to do it, 100% . After much aggravation my faith has been restored.
Al
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Carleo's the very man that finally made this right.
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 Re: Front end shimmies, anybody else?
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Should be Riding
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Quote:
Carleo's the very man that finally made this right.
he replaced my chainguard, too. on an '02. this year. good guy.
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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 Re: Front end shimmies, anybody else?
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 Been tossing this around for days, no doubt most of you are more experienced than me. But as these bikes are left parked on the side stand, is it possible that we are getting slight flat spots on the edge of the tread area?
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 Re: Front end shimmies, anybody else?
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Learned Hand
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Even when my bike was new, I noticed a tendancy for the front end to oscillate whenever I hit a bump in the road. If I wasn't holding the bars reasonably tight, the front end would shimmy for a second or two, the settle down. It's my personal opinion that there's something in the front end geometry or springing that causes these bikes to be unduly susceptible to this problem.
'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy
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 Re: Front end shimmies, anybody else?
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Fe Butt
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Fe Butt
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I don't know about that, my bike has never shown any sign at all of the problem.I still have the stock Metz on the front qith 20,000 miles on it and I can let go and go down long winedy hills making the corners with no hands, hitting bumps and no sing of a wobble at all. I can now do the same with Wendys BA since I lost the OEM Bridgestones.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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I'm really surprised to hear you say that. I wish I knew what the difference is between these bikes (I'm running Metzlers too). My front end isn't nearly as stable as you're describing, and I now have several scars to prove it.
'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy
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 Re: Front end shimmies, anybody else?
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Fe Butt
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Maybe they changed something from 04 to 08 in the front end besides the upper shroud? Don't know. Have you ever checked to be sure the nut that holds the bearings in is torqued to the correct spec.?
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Thanks, that's a good idea. I'll check it tomorrow if time permits. I should mention that there are some other issues relating to this front end that bother me. I still can't explain why the bike went out from under me last month. I'm an on-and-off 40 year veteran rider, and nothing like that has ever happened. I'm trying to come up with a game plan to resolve this, but in the meantime, all I can do is change my riding habits.
'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy
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 Re: Front end shimmies, anybody else?
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Saddle Sore
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These are some random thoughts I have (03 America) regarding this "shimmy" problem.... I have no hard data to back any of this up, so dismiss it as you will. I think the forks on our bikes are too small in diameter. They are the same - 41mm - as the Bonneville, even though our rake and trail is different and our ability to add accessories is greater. I am on my 5th set of tires in 28,000 miles. Bridgestones, 4 sets of Avons, and now Dunlops. The Avons grip like glue, but with their large sipes compared to the Bridgestones, Dunlops, and even the Metzelers, they tend to cup rather easily and severely, I might add. Tires with a more conventional tread pattern do not seem to cup as easily. This could also be attributed to the road surfaces I encounter, concrete, blacktop, gravel, tar and chip, etc. All are commonplace here. Again, these are just some personal random thoughts... Finally, a friend of mine who has been riding Goldwings for years directed me to this website - Super Brace - which looks intriguing. I haven't bought anything yet because it looks as though I would probably have to remove my lower fork shrouds to use one of these, and I'm not real fond of the bare fork look or possibly adding "gaitors" to my front forks. He has used these on his bikes and says their is a noticable difference in front end stability and reduced tire cupping. It makes sense to me, but again, these are just some ideas...  Edit: make that 6th set of tires... 1+4+1=6. It was late... 
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 Re: Front end shimmies, anybody else?
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Quote:
I am on my 5th set of tires in 28,000 miles. Bridgestones, 4 sets of Avons, and now Dunlops.
I'm on my second set in 30k and have over 15k on the 2nd set. The shimmy did reappear at the end of last summer.
A fork brace would be a great addition or stabilizer, but I've never seen either for our bike.
Al
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 Re: Front end shimmies, anybody else?
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I have the lasertec and it's fine. Unclecharlie had a hi-tech laser thingie for checking the chain alignment. What about pressure? I remember the metzler pressures were way different from the original stock tires.
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Fe Butt
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I think that the kind of tire has a lot to do with this problem too. Wendys did it with her stock Bridgestone front tire. It had no visible problem, no cupping or uneven wear or anything you could see.It also had plenty of tread left but the front end wobbled if you let go of the bars. I changed it out of a Michlin and so far the problem hasn't come back.
I have over 20,000 on my original Metz on the front. Tread is getting a little thin now but still completely stable. Changed the rear out for an IRC when the stock tire was bald and had no effect one way or the other.
So I guess in my opinion first thing would be to steer away from Bridgestone unless they make a better tire or have corrected what ever isn't right with them. I am not sure if I am going to stay with the IRC or go back to the Metz. next change. In the end cost is about the same for my local road conditions and riding style same with handling, I didn't notice any difference. The IRC is wearing faster but was cheaper so it balances out since I will get close to the mileage I did from the Metz. I got about 13,000 out of my Metz. if memory serves and am at about 7,000 on the IRC now and should get the best part of next season out of itso probably around 10,000 to 11,000 miles out of the IRC would be my guess and I paid $100 for it.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!
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 Re: Front end shimmies, anybody else?
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Should be Riding
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Quote:
Anybody else have a shimmy in thier front end?
Everytime I exceed 8,000 miles on a Venom41 or 14,000 miles on a front ME880. grrr
they cup. When that happens, you have to use two hands to handle that whopper till you can dole out the cash for some new skins. This message brought to you by the B&K steakhouse the home of the two fisted burger. Not that special sauce, lettuce, cheese, pickle on a sesame seed bun place.
Blowing gravel off rural roads
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