Drag Racing Discussions > Front Engine Dragsters
Coupler questions
MikenMpls:
I spent the money and did just as DRE suggested. Just make sure to get the measurement for the shaft correct and MW enterprises will sell it all to you. Well worth the money for this set up.
dreracecar:
But MW sells the lock collars for $32ea the same ones from Mcmaster are $9ea
duntov:
On three of my front-engine dragsters running SBC with a factory short tail housing PG into a 9" rear end, I purchased from Auto-Zone, one U-Joint that would fit the PG yoke and the 9" flange. With this setup, alignment is critical and assured by sliding the PG yoke back into the 9" yoke with no caps on and rotating the rear wheels. If perfectly aligned up, down, and sideways, it will not push the U-Joint forward when rotated. Put the U-bolts on the 9" flange and its good to go.
I was told that this would be good for rails running 7.50 and it worked like a charm for me. Cost five years ago for the U-joint was less than $15.
Another off-subject tip was to use a 70's VW Bug steering box. Great ratio, easy to mount, and the price was right.
Dave
gregm784:
a couple notes about drive shafts
ujoints need angle to work properly. They should never be run on a straight line. (can explain if needed)
I would not want ujoints in my coupler on my FED. Weak links, and my legs are right there.
tcoupekyle:
How do I measure for the shaft?
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