Front sprocket position

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Front sprocket position

Postby Whitey » Sat Mar 16, 2019 9:54 pm

What is the feeling here about floating the front sprocket as opposed to fixing it with 415 sprocket doesn’t have grub screws....talked to a few friends and some say float some say fix
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Re: Front sprocket position

Postby WILD BILL » Sun Mar 17, 2019 8:37 am

Float it is a widely accepted practice as it allows the chain and gears to find their true alignment.

You only need a slight amount of float. Typically an 1/8" total movement or less.


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Re: Front sprocket position

Postby dbbubba01 » Sun Mar 17, 2019 11:07 am

I was told to let the front sprocket float by Rick Dailey (Racerpops) back when I first rebuilt our first car.
Randy at Halfscale echoed this when I set up our current car.
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Re: Front sprocket position

Postby Kern Family Racing » Sun Mar 17, 2019 1:47 pm

I still use the collars, but I have about a 1/4” of play on both sides to let it float.
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Re: Front sprocket position

Postby Whitey » Mon Mar 18, 2019 3:07 am

Thanks people I machined a sleeve so the jack shaft doesn’t move locked it to the bearing with a collet and gave the sprocket about 3/16 movement both side with another collet on the driven clutch side..jack shaft stays the same position so clearancing the driven clutch to the primary is easy
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