Revs with 15T sprocket on a 929 - Honda Motorcycles - FireBlades.org
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post #1 of 11 Old 05-12-2007, 9:43 AM Thread Starter
 
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Revs with 15T sprocket on a 929

Hey everyone,

Just wondering what sort of revs you're running @ 70MPH with a 15T sprocket mod on a 929.

Also, with -1 at the front, does this mean I need a shorter chain if I keep the standard rear sprocket?

Cheers.
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post #2 of 11 Old 05-12-2007, 3:12 PM
 
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Re: Revs with 15T sprocket on a 929

you can keep your standard chain, as far as revs go,they are a bit higher due to the gearing change.I think mines around 5k ,give or take a bit.Taking the bike out in a bit so i'll check it specificaly when i touch 70,then repost later.You can definitely keep your stock chain though
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post #3 of 11 Old 05-12-2007, 4:20 PM
 
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Re: Revs with 15T sprocket on a 929

Stock 16t was 60 mph in 6th gear at 4,000 rpm

-1 at the front was 54 mph in 6th gear at 4,000 rpm

-1 , +2 is 52 mph in 6th gear at 4,000 rpm

You can use the stock chain for -1 and the -1 +2 combo
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post #4 of 11 Old 05-12-2007, 11:19 PM
 
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Re: Revs with 15T sprocket on a 929

You can definitely keep the stock chain. I did a 15T front on my 929 and my 954 with no problems. The only bad part about it is the speedo being off so much afterwards. Nothing a speedo healer can't fix.
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post #5 of 11 Old 05-12-2007, 11:59 PM
 
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Re: Revs with 15T sprocket on a 929

u guys know if a 180 tire will clear with a stock chain and -1 +2?

btw to add- now i have a 15t front and stock chain. bike revs just above 5k at 70, no speedo healer.
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post #6 of 11 Old 05-13-2007, 12:59 AM
 
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Re: Revs with 15T sprocket on a 929

180 is smaller than the 190 original so it should clear
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post #7 of 11 Old 05-13-2007, 3:50 AM
 
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Re: Revs with 15T sprocket on a 929

top gear doing 70 mph = 4,500 rpm, that's with - 1 in the front
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post #8 of 11 Old 05-13-2007, 11:20 AM Thread Starter
 
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Re: Revs with 15T sprocket on a 929

Thanks for your answers guys!

I've toyed with the idea of a 520 chain but I think I might just go with the 530 setup because I've read many times on this forum that the 520 mod isn't "that" noticeable.
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post #9 of 11 Old 05-13-2007, 1:22 PM
 
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Re: Revs with 15T sprocket on a 929

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Originally Posted by TheJackal View Post
Thanks for your answers guys!

I've toyed with the idea of a 520 chain but I think I might just go with the 530 setup because I've read many times on this forum that the 520 mod isn't "that" noticeable.

You realize you already have a 530 on the bike right ? Just go ahead and get the 15T sprocket if you want,you don't need to do anything else.Also the 530 is stronger set up anyway
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post #10 of 11 Old 05-13-2007, 3:56 PM Thread Starter
 
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Re: Revs with 15T sprocket on a 929

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Originally Posted by Renegade929 View Post
You realize you already have a 530 on the bike right ? Just go ahead and get the 15T sprocket if you want,you don't need to do anything else.Also the 530 is stronger set up anyway
Yeah I do but I'm going to get a new chain anyways with a Renthal ultralite front and hard anodised rear sprocket. The sprockets themselves weigh less than the standard ones which should help to shave off some unsprung weight.

I probably won't go for one of those super heavy duty chaing (DID 530ZVM2 springs to mind) but just a heavy duty DID 530VM.
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post #11 of 11 Old 05-13-2007, 7:06 PM
 
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Re: Revs with 15T sprocket on a 929

If you have to change the rear sprocket, and you do a few track days or have mates on the latest litre bikes that you want to keep honest, I'd encourage you to rethink the 520 decision.

On the track, moving to a 520 set-up (-1 on the front sprocket) made a real difference to my straight line speed.

The basic fact is that the change saves nearly 1Kg (I think its about 700 - 750grams) in weight and cuts rolling resistance - the 520 being easier to turn than the heavier 530 chain.

It's not an essential mod for the road, but it's one that is relatively cheap, easy to do, and has a positive impact on your bike's performance.

Cheers, Spanky.
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