18tsprocket

KWSXX · 11-20-2006, 8:37 PM

Where are you folks buying 18t countershaft sprockets? Should bring the speedometer fairly close to actual speed. It makes sense to gear up, the minor difference in top end dosen't really matter, but would expect slight improvement in gas mileage. Probably no more 2nd gear power wheelies but 1st gear should be more controllable.

Hobicus · 11-20-2006, 10:23 PM

Got mine from White Buffalo Racing.

Awesome mod, actually. 2nd gear is suddenly worth using and the powerband is much more predictable.

Warchild · 11-21-2006, 12:48 AM

I ordered mine from White Buffalo Racing almost two weeks ago... they are severely backordered.

Mikesblackbird · 11-21-2006, 5:21 AM

Same here -WBR ordered and installed mine a few weeks ago. The best $23 I've spent on the Bird.

Pete-in-PA · 11-21-2006, 8:24 AM

I got a JT 18 tooth from my local shop in a couple of days.

What WAS your gearing when you were doing 2nd gear power wheelies?

KWSXX · 11-21-2006, 8:32 AM

Thanks gentlemen. It occurs to me the small compromise in top end has become meaningless. I haven't topped the bike out in over a year. Here in the Houston area, the traffic density is such that it's high risk to go hyper speed almost anywhere.

Warchild · 11-21-2006, 9:56 AM

Quote:

Originally Posted by KWSXX

Thanks gentlemen. It occurs to me the small compromise in top end has become meaningless. I haven't topped the bike out in over a year.

KWSXX, you may be thinking about this bass-ackwards.... by going up a tooth in front 18T, this would give you (theoretically) a higher top-end speed than the stock 17T. So you wouldn't lose top end speed; if anything (aerodynamics allowing and everything else being equal), you would gain on the top end.

What you're probably thinking of is when one goes down a tooth up front by using a 16T. This would give you more acceleration potential at the expense of a little top end speed.

This is what most of us 2004-2006 Yamaha R1 owners have done: replace the stock 17T with a 16T. Starting with the new 2004 model, Yammy apparently though 170+ hp is a bit much for normal street riding, so they put a 17T counter-sprocket on the bike right from the factory (which made magazine reviewers believe the bike had "lost" torque from previous model years

). In fact, all previous model year R1s had a 16T, and fortunately, this 16T is a perfect fit to replace the factory 17T on the late-model R1s. Having replaced it with the previous-gen 16T, now my R1 accelerates like a bat outta hell, though I did lose a little bit on the top end.

But since I don't spend a lot of time at 160+ mph on the street, it's no biggie, and I get to really turn-n-burn in the tight twisties.

tripledigits · 11-21-2006, 11:14 AM

FWIW, I had an 18T sprocket, and didn't like it. I felt 1st gear was too tall with it. I tried a 16T as well, and didn't like it as much as the 17T.......

TCAMS-XX · 11-21-2006, 11:24 AM

Anyone else running a 16T up front? Just wondering if the drop from 17 to 16 is a good thing. Also what about going up a couple of teeth on the rear?

KWSXX · 11-21-2006, 11:43 AM

Quote:

Originally Posted by Warchild

KWSXX, you may be thinking about this bass-ackwards.... by going up a tooth in front 18T, this would give you (theoretically) a higher top-end speed than the stock 17T. So you wouldn't lose top end speed; if anything (aerodynamics allowing and everything else being equal), you would gain on the top end.

Warchild, my take on this is it's been my observation is that the Bird's stock gearing is pretty much optimum for top speed. Going to taller gearing will increase theorectic top speed (with strong tail wind) but under normal conditions I don't expect the Bird to pull all the way through high gear with 18T as it would with 17T countershaft.

KWSXX · 11-21-2006, 11:54 AM

Quote:

Originally Posted by Pete-in-PA

What WAS your gearing when you were doing 2nd gear power wheelies?

On trackdays I've been running 16T, on the street I've been running stock 17T. My bird is a 99 with akro exhaust and PCII. A good test of state of tune has been slide back in the seat and roll on, the front will do a gentle lift about a foot up. It does require a cool day, 50s and cooler.

Warchild · 11-21-2006, 12:28 PM

Quote:

Originally Posted by KWSXX

Warchild, my take on this is it's been my observation is that the Bird's stock gearing is pretty much optimum for top speed.

Concur.... I think the 17T is pretty well optimal across the entire range.

Still, I am going to experiment with the 18T because I am interested in lowering RPMs for some high-speed runs I have planned for next summer. The motivation here is simply one of saving fuel... I'd like to raise my fuel consumption up from the current 24 mpg when running at XX-Nominal speeds in Nevada.

ccriderXX · 11-21-2006, 3:38 PM

Yeah, maybe you will get 25mpg?

Warchild · 11-21-2006, 3:52 PM

For what I got planned, every drop will count.

Antrel · 11-25-2006, 9:33 PM

I run a 16T front sprocket! I like is much better than the 17T.

11-20-2006, 10:23 PM	#2
Hobicus It's a long O.. HObicus Join Date: Nov 01 2006 Location: Madison, WI Posts: 135	Re: Where to buy 18t sprocket Got mine from White Buffalo Racing. Awesome mod, actually. 2nd gear is suddenly worth using and the powerband is much more predictable. __________________ -- Rich I love my country but fear my government CycleFarkle.com - Dave's Peg Lowering Brackets, PAIR blockoff plates, Tire plug kits and more!

11-21-2006, 12:48 AM	#3
Warchild Rapin' Asphalt! Join Date: Sep 29 2006 Location: West Richland, Washington Age: 51 Posts: 877	Re: Where to buy 18t sprocket I ordered mine from White Buffalo Racing almost two weeks ago... they are severely backordered. __________________ - Warchild http://www.superblackbird.com/

11-21-2006, 5:21 AM	#4
Mikesblackbird Join Date: Nov 10 2006 Location: Bucks County, Pa Age: 53 Posts: 121	Re: Where to buy 18t sprocket Same here -WBR ordered and installed mine a few weeks ago. The best $23 I've spent on the Bird.

11-21-2006, 8:24 AM	#5
Pete-in-PA The Tire Destroyer. Join Date: Nov 15 2006 Location: Halifax, PA Age: 45 Posts: 144	Re: Where to buy 18t sprocket I got a JT 18 tooth from my local shop in a couple of days. What WAS your gearing when you were doing 2nd gear power wheelies?

11-21-2006, 8:32 AM	#6
KWSXX Join Date: Nov 14 2006 Location: Houston Posts: 47	Re: Where to buy 18t sprocket Thanks gentlemen. It occurs to me the small compromise in top end has become meaningless. I haven't topped the bike out in over a year. Here in the Houston area, the traffic density is such that it's high risk to go hyper speed almost anywhere.

Where to buy 18t sprocket - Discuss Where to buy 18t sprocket on CBRXX, the ultimate on-line community for Honda motorcyclists. Read it in Suspension / Tires / Wheels / Brakes. (Discussion of Honda CBR 1100 XX Super Blackbird Forks, Shocks, Chains, Sprockets, Tires, Wheels, and Brakes.)

18tsprocket

where to buy alternator sprocket

11-21-2006, 11:14 AM	#8
tripledigits Vendor Join Date: Oct 17 2006 Location: Colorado Posts: 101	Re: Where to buy 18t sprocket FWIW, I had an 18T sprocket, and didn't like it. I felt 1st gear was too tall with it. I tried a 16T as well, and didn't like it as much as the 17T....... __________________ Jeff in Colorado '02 Silver Bird '98 D Sports Racer

11-21-2006, 11:24 AM	#9
TCAMS-XX Join Date: Nov 20 2006 Location: Mobile, Alabama Age: 35 Posts: 38	Re: Where to buy 18t sprocket Anyone else running a 16T up front? Just wondering if the drop from 17 to 16 is a good thing. Also what about going up a couple of teeth on the rear?

11-21-2006, 3:38 PM	#13
ccriderXX Join Date: Oct 21 2006 Location: Pacific NW Posts: 135	Re: Where to buy 18t sprocket Yeah, maybe you will get 25mpg?

11-21-2006, 3:52 PM	#14
Warchild Rapin' Asphalt! Join Date: Sep 29 2006 Location: West Richland, Washington Age: 51 Posts: 877	Re: Where to buy 18t sprocket For what I got planned, every drop will count. __________________ - Warchild http://www.superblackbird.com/

11-25-2006, 9:33 PM	#15
Antrel Join Date: Oct 22 2006 Location: SAN ANTONIO TX Age: 34 Posts: 2	Re: Where to buy 18t sprocket I run a 16T front sprocket! I like is much better than the 17T. __________________ Antrel Pride Pride Racing San Antono, TX 1997 Blackbird

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Front Sprocket Bolt Torque Spec	Hobicus	Suspension / Tires / Wheels / Brakes	12	11-07-2006 7:57 PM