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Help On Front Sprocket Size


tim scorpa 03
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Just bought a 03 scorpa sy250 and when i bought the bike it came with all sorts of spares including 2 front sprockets.

what would be the advantages of changing from the 12 tooth sprocket to a 10 tooth sprocket.

would the front wheel come up quicker? would you need to use 3rd instead of second to stop wheel spin.

does any one have any advice or info

cheers

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tim scorpa 03,

From the factory the bike comes with a 10/38. You might go back to that gearing and see how you like it. I have an 03 and I think the gearing is great. I don't think taller gearing would be good...

Ciao

Doug Wilson

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Smaller countershaft sprockets will have you going slower with the same revs, and will make your gear ratios closer together. Hence, less speed in each gear.

A Scorpa has a pretty grunty motor, so I imagine the larger sprocket will be fine. It's a matter of personal preference, though. You may as well try them to see what you like.

Put the snap ring on with the flat face towards you.

Just bought a 03 scorpa sy250 and when i bought the bike it came with all sorts of spares including 2 front sprockets.

what would be the advantages of changing from the 12 tooth sprocket to a 10 tooth sprocket.

would the front wheel come up quicker? would you need to use 3rd instead of second to stop wheel spin.

does any one have any advice or info

cheers

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Put the snap ring on with the flat face towards you.

Excuse me Charlie, snap ring?????? The SY uses tried and tested heavy duty stuff! You know a very big nut and a washer you beat the S%^t out of with a hammer like the old Montesa's before Honda gobbled them up.

I would say stick with the 10, the 12 is for roadracing or the freeway! As a matter of fact I want a 9 tooth front so I can slow it down even further for the really tight stuff. With 4 bottom gears and a very tall 6th you can afford to have a very low first and mainly use 2nd, 3rd & 4th. Don't worry about gearing affecting wheel spin, that is a throttle control issue on the SY because it will spin in any gear but 6th if you give it a fist full.

BJDownunder (the Scorpa honeymoon continues) :angry: sorry can't help it ;)

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Put the snap ring on with the flat face towards you.

Excuse me Charlie, snap ring?????? The SY uses tried and tested heavy duty stuff! You know a very big nut and a washer you beat the S%^t out of with a hammer like the old Montesa's before Honda gobbled them up.

Right!

It's been almost 3 years now since I moved, so I no longer have every dirt-encrusted piece of my old buddy's Scorpa etched in my memory :angry:

He now has to drive several hours to take his bike to the importer for repairs...and he makes him pay!.......Money, not beer!!!!!!!!!!!!!!

And yes...I have often seen the results of a saved trip to Sears that results in the removal of a large fastener with hammer and cold chisel.

Not that I've ever done it myself, mind you. ;)

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I used the standard 10 front and 38 rear at this years SSDT and it worked fine. Plenty of speed where needed, i.e. on the road!

On a differant note, you might get a better response asking this question in the Scorpa Forum. ;)

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