 First Impression of New AL sprocket from Brent
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Joined: Jan 2005
Posts: 1,320
Learned Hand
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OP
Learned Hand
Joined: Jan 2005
Posts: 1,320 |
While waiting for the valve seat and O-ring that I need to get my bike up and running, went ahead and installed a new 43T Black aluminium rear Sprocket from newspeedmaster. The previous sprocket was a 44T Sprocket Specialists Aluminium sprocket. The new sprocket comes from an outfit called Precision Motorcycle Products, and looks AWESOME. The new one is even lighter than the SS sprocket, and has a much more aggressive-looking Lightening pattern than the holes on the SS sprocket. It's a bit on the skinny side, as compared to SS Front Sprocket, but mates up very nicely to the sprocket hub, and the chain seems to like the new sprocket just fine. And oh yeah, the turnaround time was awesome. I ordered this sprocket last wednesday, and got it this afternoon, not bad considering Labor Day. Anyways, looks to be an awesome sprocket. 
Michael D. Rodriguez
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Re: First Impression of New AL sprocket from Brent
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Joined: Jan 2006
Posts: 435
Adjunct
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Adjunct
Joined: Jan 2006
Posts: 435 |
How long did your last aluminium sprocket last?
TBA, Stainless extractors / drag pipes, 65mm over forward controls, Thruxton needles, 904cc, head ported, lowered 1-inch, Console removed, relocated battery box, Australia.
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Re: First Impression of New AL sprocket from Brent
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Joined: Jan 2005
Posts: 1,320
Learned Hand
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OP
Learned Hand
Joined: Jan 2005
Posts: 1,320 |
About 15,000 miles give or take a few hundred.
Michael D. Rodriguez
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Re: First Impression of New AL sprocket from Brent
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Joined: Aug 2005
Posts: 2,726
Loquacious
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Loquacious
Joined: Aug 2005
Posts: 2,726 |
Michael, are you using a 17 or 18 front sprocket with the 43? I have wanted to try 18/43 as the final ratio would be in between a 17 and 18 with the 42.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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Re: First Impression of New AL sprocket from Brent
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Joined: Jan 2005
Posts: 1,320
Learned Hand
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OP
Learned Hand
Joined: Jan 2005
Posts: 1,320 |
I'll be using a 17T front; prior to this, was using a 16T/44T combination, but figured with the big bore installed, that I could gear down without losing any acceleration, and maybe reclaim some more fuel economy.
Michael D. Rodriguez
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Re: First Impression of New AL sprocket from Brent
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Joined: Aug 2005
Posts: 2,726
Loquacious
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Loquacious
Joined: Aug 2005
Posts: 2,726 |
A 16/44 is a final drive ratio of 2.75:1 and the 17/43 is 2.53:1 which should be a BIG difference. It would be higher than a stock speedy (16/42=2.63:1) and lower than a stock TA (17/42=2.47:1). An 18/43 would = 2.39:1, a little higher than a stock TA but a little lower than where I am now 18/42 (2.33:1).
Eventually, I'll have to get one of the 43s and try it out.
Bob
2005 America, 904cc - sold. 2014 Trophy SE.
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