 Re: 19 tooth front: A performance evaluation.
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Joined: Jul 2008
Posts: 55
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Member
Joined: Jul 2008
Posts: 55 |
I am curious as to what kind of rpm everyone is running at highway speeds that you feel you need an extra gear?
Out tonight with rpms at 5k in 4th gear i was doing about 75mph & when I switch to 5th gear im rolling at 90mph.
Thats with a stock SM sprockets
S.
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2005
Posts: 1,928 Likes: 1
Learned Hand
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OP
Learned Hand
Joined: Jan 2005
Posts: 1,928 Likes: 1 |
More about the feel to reach for another gear that people "feel". Not really about what the bike can do with stock sprockets of 16 or 17. Just when you run through the gears and you "feel" like you need to shift again. Does the bike need it? No. Are there some advantages to using a taller gear? Yes.
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Re: 19 tooth front: A performance evaluation.
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Joined: Jul 2007
Posts: 410
Adjunct
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Adjunct
Joined: Jul 2007
Posts: 410 |
Quote:
Out tonight with rpms at 5k in 4th gear i was doing about 75mph & when I switch to 5th gear im rolling at 90mph.
Thats with a stock SM sprockets
S.
I tend to ride mine between 5.5k to 7.5k (limiter) she purrrrs at those revs, Im just getting into 5th at 90 - 100  maybe I need to slow down LOL
TrOjAn
TrOjAn
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Re: 19 tooth front: A performance evaluation.
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Joined: Jun 2008
Posts: 93
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Member
Joined: Jun 2008
Posts: 93 |
Yes, I realized what I said just after I posted and logged... (duh) I just saw many discussions about speedo being off and my thought jumped to needing speedo calibration since so many mentioned they observe their's is off with "stock" wheels and "better" with larger wheels... is there an adjustment, or do you just need to know how much you are off and just compensate...
Thanks
CHUCK
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Re: 19 tooth front: A performance evaluation.
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Joined: Feb 2006
Posts: 3,099
Loquacious
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Loquacious
Joined: Feb 2006
Posts: 3,099 |
I compensated by putting on a larger front tire.
If you're so worried about it, SLOW DOWN!
When the young NY State Trooper asked me why he pulled me over,
I should of said: "I thought you wanted a better look at my Triumph".
I was just glad he didn't look in my pockets.
He was nice enough to write me up for 73. I was doing every bit of 97.
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Re: 19 tooth front: A performance evaluation.
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Joined: Feb 2008
Posts: 2,668 Likes: 14
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,668 Likes: 14 |
Quote:
...I was doing every bit of 97...
Actual or indicated? 
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2005
Posts: 5,172
Saddle Sore
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Saddle Sore
Joined: Jan 2005
Posts: 5,172 |
A few years ago on our way to the NY rally, Snert and I checked this out. He has the larger front wheel on his bike. I was leading and doing 5 mph over the posted limit. His speedo indicated the posted limit. This was on 45/55 mph roads. There is no speedo adjustment to correct this. The general consensus over the years has been that our speedos are off around 8-10 mph at any speed over 40.... So doing 5-10 over puts you in the ballpark. I'm running an 18/41 sprocket combo btw, and it works for me. I have yet to see a 115 mph road around here. 
More flags
More fun!
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Re: 19 tooth front: A performance evaluation.
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Joined: Jul 2007
Posts: 410
Adjunct
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Adjunct
Joined: Jul 2007
Posts: 410 |
Quote:
I'm running an 18/41 sprocket combo btw, and it works for me. I have yet to see a 115 mph road around here.
You need to stop looking for the roads and open that throttle 
TrOjAn
TrOjAn
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Re: 19 tooth front: A performance evaluation.
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Joined: Nov 2008
Posts: 335
Adjunct
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Adjunct
Joined: Nov 2008
Posts: 335 |
Quote:
Yes, I realized what I said just after I posted and logged... (duh) I just saw many discussions about speedo being off and my thought jumped to needing speedo calibration since so many mentioned they observe their's is off with "stock" wheels and "better" with larger wheels... is there an adjustment, or do you just need to know how much you are off and just compensate...
If I'm going anywhere that isn't just around the neighborhood, I use my GPS for my speedo.
-Joe Merlino
Boston, MA USA
1982 BMW R100 (decomissioned), 2003 America
Triumph: Cool enough for The Fonz, cool enough for me.
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2009
Posts: 251
Adjunct
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Adjunct
Joined: Jan 2009
Posts: 251 |
Don't shimano do a front deraillier... I'm sure with the technical knowledge here we can design an adaption... Lever on handlebars with hi - lo. Like my 4x4...  
Mike.
Veho Liberate
Iustus Paratus Prohibeo Penuriosus Effectus
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2006
Posts: 7,666 Likes: 16
Monkey Butt
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Monkey Butt
Joined: Jan 2006
Posts: 7,666 Likes: 16 |
Like a 1983 CB1000 Custom Honda. Too bad the V-4 replaced it but progress must happen I guess. You know water cooling, self adjusting valves all came in 25 years ago. It does exactly that. Kick it down its 2 teeth taller, kick it up its for low end torque. Not that it needs it. Does 115 MPH in 3rd and will burn rubber out of the hole.
I try to aggravate one person a day. Today may be your day.
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Re: 19 tooth front: A performance evaluation.
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Joined: Sep 2014
Posts: 83
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Member
Joined: Sep 2014
Posts: 83 |
Any one ever do 2 up riding with the 19 tooth?
14 America LT 19" EMGO Turnouts AI removed
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Re: 19 tooth front: A performance evaluation.
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Joined: Feb 2007
Posts: 23,134 Likes: 52
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,134 Likes: 52 |
I don't know why my post is missing, I tried the 19T front and it took way too much grunt away riding solo, so I would imagine way too much 2 up. I still have the barely used 19 hanging on the wall in the shed.
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: 19 tooth front: A performance evaluation.
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Joined: Apr 2008
Posts: 3,937
Loquacious
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Loquacious
Joined: Apr 2008
Posts: 3,937 |
I've ride with a 19t about half the time, and half of that time is two-up.
Runs fine, no issues. I live in Orlando, so there's no real grade (elev.) changes.
I'm 210 lbs, 380 lbs (+/-) when two up.
My bike is pretty light though, and I seldom have luggage. So total weight, fully loaded, is always under 900 lbs.
FWIW, the OTHER half of the time it has a 16t.
Changing from 16 to 19 ONLY involves changing the gear (duh), and re-adjusting the axle position, nothing else.
And you may see me tonight
With an illegal smile
J. Prine
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2005
Posts: 11,122 Likes: 11
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 11,122 Likes: 11 |
I bet she gets barking mad when running the 16! 
Blowing gravel off rural roads
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2007
Posts: 706 Likes: 1
Adjunct
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Adjunct
Joined: Jan 2007
Posts: 706 Likes: 1 |
I tried the 17/42 combo on the Beasty 2 up not to bad at all.....put the little camp trailer on the back and oh yuck when towing i run the 16/44 combo 
04 yellow&black Speedmaster+the Money Pit{xj jeep}
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2006
Posts: 7,666 Likes: 16
Monkey Butt
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Monkey Butt
Joined: Jan 2006
Posts: 7,666 Likes: 16 |
Yep, that could be a bit of drag for sure.
I try to aggravate one person a day. Today may be your day.
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Re: 19 tooth front: A performance evaluation.
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Joined: Nov 2009
Posts: 3,175 Likes: 47
Loquacious
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Loquacious
Joined: Nov 2009
Posts: 3,175 Likes: 47 |
I ride two up with 19 tooth our weight totals 310-315 lbs. (22.5 stone)  It pulls fine enough but still has the top end. What does that trailer weigh the way it sits?
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2007
Posts: 3,445 Likes: 1
Loquacious
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Loquacious
Joined: Jan 2007
Posts: 3,445 Likes: 1 |
About #360 here (combined weight) and 19T works fine. I switch back to the 17T if I take the bike to NC. Maybe this will be the year I just go with an 18T. I do lose a little top end with the 19, but I'm pushing a barn door of a windscreen and that's probably the bigger reason.
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2007
Posts: 706 Likes: 1
Adjunct
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Adjunct
Joined: Jan 2007
Posts: 706 Likes: 1 |
Quote:
What does that trailer weigh the way it sits?
empty she's 250kg and loaded around the 300kg
04 yellow&black Speedmaster+the Money Pit{xj jeep}
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Re: 19 tooth front: A performance evaluation.
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Joined: Feb 2012
Posts: 544
Adjunct
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Adjunct
Joined: Feb 2012
Posts: 544 |
hey! hey! can you post some pictures of that hitch?
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Re: 19 tooth front: A performance evaluation.
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Joined: Feb 2007
Posts: 23,134 Likes: 52
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,134 Likes: 52 |
Ed posted some really good pix of the one he made a while back.
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: 19 tooth front: A performance evaluation.
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Joined: Feb 2012
Posts: 544
Adjunct
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Adjunct
Joined: Feb 2012
Posts: 544 |
I'll actually attempt the serch tool then
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2007
Posts: 706 Likes: 1
Adjunct
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Adjunct
Joined: Jan 2007
Posts: 706 Likes: 1 |
jryan....if photobucket will ever let me resize a pic i'll post up a photo in the lounge
04 yellow&black Speedmaster+the Money Pit{xj jeep}
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Re: 19 tooth front: A performance evaluation.
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Joined: Jan 2007
Posts: 706 Likes: 1
Adjunct
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Adjunct
Joined: Jan 2007
Posts: 706 Likes: 1 |
04 yellow&black Speedmaster+the Money Pit{xj jeep}
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