quick change problems

[chasefrehley]

I bought a used quick change and need to convert it into one i can use in my modified. the axle tubes are wide 5, so i need to first buy a set of steel. Problem is every measurment i get the tires will be 4 inches out side the body on both sides.. My old axles, that were in a 9 inch ford housing are left rear 28 3/4. Right rear 33. That kept tires inside body. What axle lengths and tube lengths do i need for grand national style hubs?

[powerslide]

what kind of chassis do you have? Are you sure you had the correct 9in rearend under it?

[dirty white boy]

http://static.speedwaymotors.com/images/charts/Chart-9197334.gif

[tomslick53]

If you are trying to use your 9" axles in the quickchange, that is the problem. A 9" has the pinion off center about 2 1/2", the QC is centered. The axles lengths will be different for the same track width between the two. Go to a Coleman catelog and they have diagram to figure out axle length based on rear end and hubs.

[ASMotorsports]

What are you trying to achieve? Most are 60" center... In that case, the B Measurement is L: 21.5" R: 21.5"....

[racin6mod]

we're doing the same thing on a qc right now the over all width of the rearend with out hubs is 59 1/4'' allows for 3/8'' thick drive plates on each end. measure the width of your qc's center over all width out side to out side of the bells subtract that from your 59 1/4'' and then add 10 inches this is the amount of tube that will be pressed in the bells 5 inches per side. divide that by 2 for each tube length.

example: 59 1/4-23=36 1/4 +10=46 1/4 /2=23 1/8 per side

for axles add 1 1/2(for the drive flange that hang's out in to the wheel area) to your 60 and divide by 2 should be around 30 3/4

this should help you get close remember not all brands are the same and the stack up on the rear center section will very even with in the same make.