Not Another CTOR Build

[CheapThrillB2]

alot more stress on the shaft in 2-Lo then double Low

 

[Bray D]

Nope. The torque output of the engine and the gearing of the transmission/first case is what determines the maximum torque that the shaft is capable of seeing.

If you have it in double low, and anchor your wheels to the ground so it is impossible for them to rotate (hypothetical), the shaft would see the same torque as if it were in 2low. Only difference is everything after the second case will see more torque in double low than in 2low, which usually causes u-joint, axle, or hub failure before the shaft sees the maximum torque load.

*edit*
Yes there is more stress on the shaft in 2 low in most situations, but that same stress is possible to obtain in double low, assuming the rest of the drivetrain is strong enough (which it usually isn't).

 

[CheapThrillB2]

i haven't haerd of any shaft failures in double low, every one that i know of that has a welded shaft have all broken in 2-lo FWIW (including both of mine)

 

[Bray D]

Thats because noone every gets in situations where theres enough resisting torque. Most of the time tires slip or axles break before the resisting torque is enough to make the shaft fail.

 

[CheapThrillB2]

Shot of the linkage assembled. (cell phone Pic)

Got the doubler installed

Built a new trans crossmember, doubler installed, rear driveshaft. Still need to build a front driveshaft however and fix the floor in the b2 after getting the new shifters installed.

2hi

4lo

double lo

 

[Bray D]

Lookin good

 

[CheapThrillB2]

tried the doubler out yesterday, nothing like climbing obstacles in a stick and never having to give throttle assistance while doing so. Need to make some shifter adjustments and body adjustments, the doubler hits a certain spot on my floor and make an incredible irrating noise.

 

[CheapThrillB2]

At Idle with no throttle assistance and in 1st Gear, it would have kept climbing till i flipped over had i not pushed the clutch in.

 

[PaleBlue90]

man i want a doubler even more now

 

[CheapThrillB2]

 

[PaleBlue90]

very nice!

 

[CheapThrillB2]

only problem i had was when the doubler is in hi range it seems to pop out and grind. I think i have a linkage problem cause when i pull the linkage off it works better most of the time. But it still occasionally pops from gear.

 

[CheapThrillB2]

http://www.youtube.com/watch?v=Sg26S5Ubdd8

 

[CheapThrillB2]

 

[PaleBlue90]

if you were closer and i had the cash id get you the parts and have u build me one of those doublers lol