205 slip yoke, any reason not to?

[obijuank5]

For my 91 cummins swap I'm pretty close to being able to run a 1 piece driveshaft and lose the carrier bearing. I can swap the 205 to a slip yoke and make a 5" aluminum shaft.
Is there any reason not to do this? I cant honestly think of any reason not to do this except for the 32 spline slip yoke output shaft maybe not being up to the power levels and might wear out the slip cone or something. 500/1000 is expected.

Cost is about the same for a new 1410 two piece or one piece. Got to build one anyway.
Ive got to pull the twin stick rails for stockers so it will be apart.

 

[nvrenuf]

I really don't know the full science behind using a 2 pc driveshaft but I always assumed it was because there's a point at which a really long tube would bow under heavy load, any thoughts on this? How close are you in length compared to a LWB 4 spd / 205?

 

[obijuank5]

Fixed yoke im 86". That is what im trying to avoid is heavy loading the carrier bearing because it will want to bow under load which will focus on the carrier bearing and smoosh it to death.

Removing the bearing puts all the load in a straight line and gives me axle wrap instead lol

 

[obijuank5]

Turns out critical speed of a 5" aluminum 86" driveshaft is well over 100 mph so safe to say theres no issue there. Being 5" instead of 3 or something also influences its resistance to being a banana under stress.

 

[Bent77]

Well you answered your own question. Aren’t most of the t cases behind the 7.3 and 5.9 trucks slip yoke?

 

[Bent77]

Fwiw, the t case I have out of a 92 dodge was factory fixed

 

[obijuank5]

94 was the start of slip yoke in the dodge but the diesels were 29 spline output shaft.
This is my concern really for the smaller 32 spline with the wide oiling holes. Not sure they can take 1000 ft/lb.

 

[Bent77]

That looks gross

 

[obijuank5]

Thats what im thinking.

 

[max 02]

That looks gross

Maybe it was missing a snap ring!?

Jk!

I don’t know but every Duramax and newer Dodge is slip yoke. Plenty of them running over 1000ft pounds. But I know for a fact Dodges will toss a T/C on the pavement! Farmers around here aren’t all about maintenance apparently. Lol!

 

[obijuank5]

This is how newer dodges are doing it though. Solid output shafts. This is a 271d. 94-02 241 dld were 29 spline and also solid shafts.

 

[max 02]

This is how newer dodges are doing it though. Solid output shafts. This is a 271d. 94-02 241 dld were 29 spline and also solid shafts.

View attachment 381147

Well. Quite the difference.
205 is the same size as 241 I take it.

 

[obijuank5]

Gm for gm yes, they are both 32 spline but the whole oiling sitch. Gonna call ORD and see if the later oiling ever made it to the slip yokes. I'd be much more confident running that if it exists.

 

[max 02]

I had to reread your question.
I was kind of not thinking/ drinking.

Now I realize what your trying to put together. To bad everyone went to driver side front ends on the bigger Transfer cases.
Guess you could run a Ford 60 or try the 205.
What trans are you going to use?

 

[obijuank5]

Im am invested as it gets in passenger drop. This is for a g56 29 spline transmission. I have the stronger fixed yoke 205 output shaft but Ive been presented with the possibility of the one piece. I had initially thought it was out of my league. After assembly I can and really would like to once piece it.

 

[imiceman44]

Im am invested as it gets in passenger drop. This is for a g56 29 spline transmission. I have the stronger fixed yoke 205 output shaft but Ive been presented with the possibility of the one piece. I had initially thought it was out of my league. After assembly I can and really would like to once piece it.

Go for it