6x4 Cub

[J-Mech]

To drive two sets of hydro's all you do us run a shaft off the output of one pump to the input of the other. Why do you guys need to see pics of that? Pretty simple..... it's just a shaft.


So, did you build any oscillation into the driving axles? What are you going to do about frame twist on uneven terrain? How are you going to keep both drive axles on the ground?

[mrfred54]

awesome........... keep us posted on progress. I love it.

[DieselDoctor]

When I asked for pictures of how the second axle was driven, I had more in mind than just pictures of the driveshaft between them. I too am interested in
" did you build any oscillation into the driving axles? What are you going to do about frame twist on uneven terrain? How are you going to keep both drive axles on the ground? " but didn't completely specify exactly what specific interests I had in mind. Sorry I didn't meet the conversation criteria.

[J-Mech]

Originally Posted by DieselDoctor

When I asked for pictures of how the second axle was driven, I had more in mind than just pictures of the driveshaft between them. I too am interested in
" did you build any oscillation into the driving axles? What are you going to do about frame twist on uneven terrain? How are you going to keep both drive axles on the ground? " but didn't completely specify exactly what specific interests I had in mind. Sorry I didn't meet the conversation criteria.

I wasn't chastising anyone in particular..... but since you replied, you did ask how they were driven, not how they are mounted. I know you understand the difference, but they are two different things.

I can see from the pics posted it's a solid frame. My question as to their mounting is more of a "did you take into consideration", so I wasn't very specific either. Give me a break, I was trying to be nice....

[ironman]

Getting the trunnions hooked together to operate the pumps in unison should prove to be very interesting. Hopefully he'll post some pictures of that.

[DieselDoctor]

I would like to see this type of conversion done with some sort of suspension that would allow the axles to move as those in a tandem axle truck. With the CV style driveshaft from a cyclops, it could be made to have enough slip joint to allow the axle movement up and down. Between the two hydros would have to be done in a similar manner. Perhaps if I ever get the time and have a SGT to modify I might try something. My 2072 is my favorite and could never bring myself to weld on it. Guess I'll have to buy some more Cubs!

[bjddjb]

Drive train as it sits. I was hoping to work on the shift linkage today but other jobs took priority, but hopefully Sunday.

there is no suspension on the drive axles which may be an issue in overly rough terrain but it may function just fine in the environment I plan to use it in, I'll have to get it driving and find out.

Additional bracing will be added to prevent the frame from twisting. I've held off on too many braces until i know were all my linkages are going to run. Also frame work for the bed will need to be built and will be a good place to add additional structure

This is very much a work in progress and somewhat of a design on the fly sort of project. My plan is to concentrate on getting it driving so I can asses how it works and what design changes I need to make.

[sawdustdad]

That's cool. I've been looking at doing something similar but had thought that only one rear axle would drive and the rear most axle would just free wheel (really just for load carrying). Articulating the frame to keep all four wheels on the ground is another challenge, but would be simpler if only the front rear axle had power.

The ability to get power to the rear most axle (or with the rear hydro, controlling both hydros so they turn both axles in sync) seems complicated. Would love to see some close up pics of linkages, etc. once you get it sorted out.

I was thinking about a double seat, so two people could ride side by side.

One idea I had for driving both axles was to get a rear end with internal brakes, then install disk brake axles in it. Bolt a chain drive gear to the front disk rotor and have a chain run to the rear axle with similar gear bolted to that rear end's disk brake rotor. So the front axle drives the rear axles at the exact same speed via the chain drive. Do that on one or both sides. This would work on either a hydro or gear drive rear end.

[john hall]

Originally Posted by sawdustdad

One idea I had for driving both axles was to get a rear end with internal brakes, then install disk brake axles in it. Bolt a chain drive gear to the front disk rotor and have a chain run to the rear axle with similar gear bolted to that rear end's disk brake rotor. So the front axle drives the rear axles at the exact same speed via the chain drive. Do that on one or both sides. This would work on either a hydro or gear drive rear end.

I saw something similar to what you are talking on a large truck (early semi) at an antique show. It ran a belt between the axles on each side. May have been a Mack?

[Randy Littrell]

I think if you have brakes on both axles and put turning brake pedals on your tractor, it would make turning much easier.

Maybe mount the rear transaxle just a titch lower than the front to put weight on the front axle with a load on it.



Randy