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Old 08-24-2008, 09:49 PM   #1
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SV gearing question

Here's a question for those of you who track/race the almighty SV.

I'm considering going -1 in the front down to a 14t or going +2 or +3 to a 46t or 47t in the rear.
From reading on the sv board on the s model -1 in the front is the same as +3 in the rear. However, does going -1 in the front really affect chain where?
And if it does and I decide to go +3 the rear will my stock chain be long enough or will I need to buy a new one?

The bike is all stock and does daily commuter duty, and the occasional track day (the track bug has bitten me pretty hard)

I'm not too worried about top speed, as I get blasted on the straights by bigger bikes anyway, only to get stuck behind some of them with not enough a** to get past them at times, so I'm looking for a little more acceleration / drive out speed.

what do you guys think?
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Old 08-24-2008, 09:59 PM   #2
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We run 15-45 at almost every track.

Going +3 on the rear will buy you a new chain too.

You should look at Supersprox, I just bought some, and they have life time warranties. www.supersprox.com

On our endurance bike, we switched back to 525 pitch (from 520) and have run 15-45 at Cresson, Hallett, and TWS (Texas World Speedway) without issue.

Stick with stock.
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Old 08-25-2008, 03:08 AM   #3
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honostly id stick with the stock gearing. if you switch it then go to TWS (Texas World Speedway), and you really get a good drive out of the last turn, your gonna be boucin off the limiter 3/4 of the way down the straight
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Old 08-25-2008, 08:28 AM   #4
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I've read that stock for the S model is 44t rear, should I get a 45t for the rear?
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Old 08-25-2008, 09:16 AM   #5
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Hope ya don’t mind Jason, but to add to this question…
I understand some racers gear for the specific track they’re running. Is the idea to to hit redline at the end of the long straight in top gear? or to stay in the powerband elsewhere.
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Old 08-25-2008, 10:17 AM   #6
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I run 15/46 at TWS (Texas World Speedway), and Cresson. 14/46-47 at Oakhill.

At TWS (Texas World Speedway) I would gear for the front straight. I usually gear for the type of track. Tight tech track = short gearing for better drive. The bigger tracks like TWS (Texas World Speedway) really require you to keep your speeds up (corner speed) so top speed is a consideration.

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Old 08-25-2008, 11:01 AM   #7
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Quote:
Originally Posted by Dave C View Post
you and i have a long way to go before we should be worried about gearing =)
I know but I can't help but think about it
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Old 08-25-2008, 09:39 PM   #8
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If this bike is an everyday commuter I would stick to the stock gearing. Stock gearing will keep the revs down and gas mileage up. For track day purposes you could stick to the stock gearing (which is generally always tall for street bikes) for TWS (Texas World Speedway), MSRH, and EGR. You could buy a 14t sprocket for the front for the shorter tracks and never have to buy a chain.
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Old 08-25-2008, 09:52 PM   #9
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I think I may try a 45t rear (stock for the naked sv) and see if I notice a difference.
maybe if I ever do GSS I'll pick up a 14t front
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Old 08-25-2008, 10:09 PM   #10
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Isn't 46 stock on the rear? I'd run that or a 47. You probably will not be able to pull 15/45 down the straight. You want to be on the limiter going into T1 @ TWS (Texas World Speedway).

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Old 08-25-2008, 10:20 PM   #11
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Quote:
Originally Posted by kawi jm View Post
Isn't 46 stock on the rear? I'd run that or a 47. You probably will not be able to pull 15/45 down the straight. You want to be on the limiter going into T1 @ TWS (Texas World Speedway).

John
Hey John.....sometimes being on the limiter on the straight at TWS (Texas World Speedway) has nothing to with gearing!! Sometimes it's just about having the "Cajones"!!
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Old 08-25-2008, 10:25 PM   #12
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Quote:
Originally Posted by aarongore View Post
Hey John.....sometimes being on the limiter on the straight at TWS (Texas World Speedway) has nothing to with gearing!! Sometimes it's just about having the "Cajones"!!
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Old 08-25-2008, 11:16 PM   #13
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Old 08-25-2008, 11:20 PM   #14
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for TWS (Texas World Speedway) run either15 45 or 16 48 same goes from the street. and seeing as how ive had more svs than i can count, yall should listen, even though i know yall are stubborn mofos
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Old 08-26-2008, 07:57 AM   #15
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I guess I have cajones then, 'cause I hit the rev limiter on the SV at TWS (Texas World Speedway) before turn one with 15/45, most of the time at the braking markers. It depends on the drive you get out of the chicane on to the front straight.

I HAVE to get a good drive on to the straight or else I get smoked on the straight by all the 600s. If I get a good drive, I can usually keep the 600s at bay in to turn one (some of them, not all...).

Stick with stock gearing until you get some more experience at the track, there's no real good reason to change.
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Old 08-26-2008, 07:59 AM   #16
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Quote:
Originally Posted by kawi jm View Post
Isn't 46 stock on the rear? I'd run that or a 47. You probably will not be able to pull 15/45 down the straight. You want to be on the limiter going into T1 @ TWS (Texas World Speedway).

John
for the svs 44 is stock, so I'm thinking I'm going to go +1 in the rear to 45, at least with that I won't need a new chain

Quote:
Originally Posted by aarongore View Post
Hey John.....sometimes being on the limiter on the straight at TWS (Texas World Speedway) has nothing to with gearing!! Sometimes it's just about having the "Cajones"!!
or it could be I'm too heavy for the sv to push me any faster
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Old 08-26-2008, 09:29 AM   #17
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Quote:
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or it could be I'm too heavy for the sv to push me any faster
Well I'm 210#
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Old 08-26-2008, 10:18 AM   #18
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Quote:
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Well I'm 210#
I don't have you beet by much, I'm 220lbs, and about 6'3", which makes me look funny on the sv
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Old 08-26-2008, 10:25 AM   #19
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Tell me about it, I'm 6'4" & 210#
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