 19 tooth sprocket question
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Joined: Aug 2007
Posts: 55
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OP
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Joined: Aug 2007
Posts: 55 |
Currently have a 17 tooth sprocket and do about 4200 RPM at 70 MPH. Does anyone have a 19 tooth and if so would they let me know their RPM's at 70mph.
Thanks
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Re: 19 tooth sprocket question
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Joined: Sep 2005
Posts: 3,816
Freelance Jedi Knight
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Freelance Jedi Knight
Joined: Sep 2005
Posts: 3,816 |
I had one but no tach on bike that time but it was good for cruisig
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Re: 19 tooth sprocket question
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
Joined: Mar 2007
Posts: 5,616 |
Quote:
Currently have a 17 tooth sprocket and do about 4200 RPM at 70 MPH. Does anyone have a 19 tooth and if so would they let me know their RPM's at 70mph.
Thanks
I do about 4000rpm at 70, 4500 at 80 in 5th gear...give or take a bit.
I like what the 19T did for me for fwy riding but the pick up I used to get in 5th isnt there...have to remember to downshift now and 5th is really only used on Fwy now.
try this calculator out http://www.gearingcommander.com/ (I think Soren originally posted it). Stock on my 07 America was a 42 rear and 18 front (I think).
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: 19 tooth sprocket question
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
Joined: Mar 2007
Posts: 5,616 |
Quote:
Stock on my 07 America was a 42 rear and 18 front (I think).
Yup...just went and verified...it was an 18T on my 07.
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: 19 tooth sprocket question
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Joined: Sep 2007
Posts: 1,668
Learned Hand
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Learned Hand
Joined: Sep 2007
Posts: 1,668 |
I just installed a 19T on mine. I don't have a tach either. I don't know how it would do with a stock motor, but with the 904 it works great for me. I rejetted from 140/42 to 150/45 at the same time I installed the 19T (up from 18T)and picked up 12 MPG! Now i'm back up to 50MPG and loving it! 
Howbeit when He, the Spirit of truth, is come; He will guide you in all truth:
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Re: 19 tooth sprocket question
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Joined: Sep 2007
Posts: 12
Complete Newb
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Complete Newb
Joined: Sep 2007
Posts: 12 |
hi! This may be a dumb question. I just resently got my 04 TBA and have been reading alot on this forum. With an endless chain, can I go up a tooth (17 to 18) without doing anything to my chain? (Other than an adjustment) What about 2 teeth? thanks
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Re: 19 tooth sprocket question
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Joined: Aug 2005
Posts: 2,726
Loquacious
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Loquacious
Joined: Aug 2005
Posts: 2,726 |
With the 42 rear sprocket and stock chain you can go up to 18 or 19 with enough adjusting range. Going up a tooth on the front sprocket makes a noticeable difference. The only cost about $20. and I would suggest going up only up one tooth and riding awhile to see how you like it.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: 19 tooth sprocket question
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Joined: Sep 2007
Posts: 12
Complete Newb
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Complete Newb
Joined: Sep 2007
Posts: 12 |
Thanks that's what I planned on..... Just feels like its a gear short.
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 Re: 19 tooth sprocket question
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Joined: Aug 2007
Posts: 51
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Member
Joined: Aug 2007
Posts: 51 |
i have a 06 speedie and I put a 19tooth on it. Really made a difference. no longer looking for 6th gear and increased gas milage. I really like it.
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Re: 19 tooth sprocket question
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Joined: May 2006
Posts: 3,971
Loquacious
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Loquacious
Joined: May 2006
Posts: 3,971 |
The only drawback I found with a 19 toofer (and a 42) is the engine works pretty hard and lugs at under 3,500 RPM. If memory serves, top gear wanted more like 3,700 or 3,800 under load to smooth out the engine.
It takes a little extra clutch slip and throttle to launch them too, so as not to hear the pistons slap.
The on highway part is great though. Not so great around town, but you can get used to it.
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Re: 19 tooth sprocket question
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Joined: Mar 2008
Posts: 1,586 Likes: 1
Learned Hand
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Learned Hand
Joined: Mar 2008
Posts: 1,586 Likes: 1 |
Iwent from 16 to18 didn't have to change chain,gona go down to 17.
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Re: 19 tooth sprocket question
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Joined: Mar 2006
Posts: 2,527
Loquacious
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Loquacious
Joined: Mar 2006
Posts: 2,527 |
I have a 17 tooth on my 790 Speedie and I would not go any higher.
I find it to be optimal but even with a 17 tooth the ability to move out quick from a stop light is slightly degraded. I am sure an 18 tooth would be even more so and a nineteen tooth would be lug city big time.
"Proud to be an Infidel" ... "100% pure American Jingoist"
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Re: 19 tooth sprocket question
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Joined: Jan 2005
Posts: 184
Adjunct
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Adjunct
Joined: Jan 2005
Posts: 184 |
Running a 17 tooth on the speedy as well. Good combination of city and highway riding, would not go anouther tooth higher. Did 300K yesterday running between 4000 and 4500 rpm on the highway hums nice in that range, runs like a jack rabbit in the city.
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Re: 19 tooth sprocket question
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Joined: Dec 2006
Posts: 291
Adjunct
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Adjunct
Joined: Dec 2006
Posts: 291 |
I have run a 19tooth for the last 8000 miles and love it in town and on the highway. When you have baffleless specialty spares installed, you need lower rpms on the road or you will be ticketed and become DEAF! No chain mods required, just a rear adjustment. My rpms at 70 are 3600ish with stock motor. No problems pushing the bike. It is still quick! If I had wanted a rocket, I wouldve bought just that! Good luck. I reccomend 19 all the way!
Best looking black girl around!
2004 SM-spokes, solo seat, lowered rear, 14 in apes, bobber rear fender, no front fender. Flat black all the way around.
Jeff
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Re: 19 tooth sprocket question
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Joined: Jan 2005
Posts: 570
Adjunct
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Adjunct
Joined: Jan 2005
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Changed out to a 19T Sprocket today and after a trial run....all I can say is WOW!. Finally found 6th gear and 3rd really becomes useful around town. I can cruise smoothly at 60 mph at 3200 rpm. If you're condidering this mod....do it!
Question... the original Triumph sprocket has rubber type pads on each side and the new 19T Brent sent me does not, what is the purpose of those rubber thingys and do you need them on the replacement sprocket? Don
"You're a long time underground!"
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Re: 19 tooth sprocket question
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Joined: Jun 2008
Posts: 186
Adjunct
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Adjunct
Joined: Jun 2008
Posts: 186 |
When fleeing the scene, almost 50 in 1st, almost 90 in 2nd, pegged it in 4th.
Last edited by UKBACON; 07/24/2008 9:21 PM.
2006SM XS pods,145/45,XS springs,arlen ness mirrors,19t primary,Reality is you are the weak and I am the tyranny of evil men, but I'm tryin REAL hard to be the shepherd. Scott Jackson McCain
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Re: 19 tooth sprocket question
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Joined: Apr 2007
Posts: 3,063 Likes: 8
Loquacious
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Loquacious
Joined: Apr 2007
Posts: 3,063 Likes: 8 |
Quote:
Question... the original Triumph sprocket has rubber type pads on each side and the new 19T Brent sent me does not, what is the purpose of those rubber thingys and do you need them on the replacement sprocket? Don
I think the rubber pads are to reduce drivetrain noise a bit. Act as a mini shock absorber. That's my take on them.
I went from the OEM 17 tooth to an 18. BTW I have an indicated 3400rpms at 100kph which is around 60mph.
12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
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Re: 19 tooth sprocket question
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Joined: Jan 2005
Posts: 570
Adjunct
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Adjunct
Joined: Jan 2005
Posts: 570 |
Thanks for the info Greg. I've dropped 2 to 300rpm from where you're at with the 19T. I'm really liking it!
"You're a long time underground!"
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