Front sprocket position

General Technical Assistance

Moderators: WILD BILL, livewire, 2kidsracin, Pool Man, chili man

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 collets....new 415 sprocket doesn’t have grub screws....talked to a few friends and some say float some say fix
Whitey
 
Posts: 6
Joined: Fri Mar 01, 2019 10:34 pm

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.
WILD RACING

Image

Taylor 00 Bos #3411 "WILD THING" Retired
Kaitlin 10 Half Scale #3251 "WILD CHILD" 2012 SMP Novice Champion
User avatar
WILD BILL
 
Posts: 6543
Joined: Sun May 27, 2007 7:35 pm
Location: BROOK PARK OHIO

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.
Danny Brown
Hannah Mitchell (NHRA and IHRA #4816)
dbbubba01
 
Posts: 209
Joined: Sun Jul 27, 2014 9:20 am
Location: Rockwall, Texas

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.
Scott and Jack
Kern Family Racing
 
Posts: 129
Joined: Tue May 31, 2016 7:12 am
Location: Greenfield, IN

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
Whitey
 
Posts: 6
Joined: Fri Mar 01, 2019 10:34 pm


Return to Tech Talk

Who is online

Users browsing this forum: No registered users and 6 guests