TinkerBrick, on 13 August 2011 - 10:25 PM, said:
i just took an hour of fooling around a bit with my unimog.
I might have a way to putt an XL-Motor into the mainframe without changing to overall design.
First i replaced the two rear 13-hole liftarms on the upper frame with two 9-hole lift arms - please disregard the dark bluish gray, as they just came to my hand first.
This leaves fairly enough room for the xl-motor.
When looking from the rear of the unimog towards to gearbox you can spot the engine driveshaft below the steering shaft. The axle sticks out 1 length unit so i attached a joint an a 3 stud-axle with a large 24 tooth gear.
The motor also has a 3 stud axle with a small gear attached.
The motor is lowered into the frame - leaving the pinholes of the motor exactly on the level of the upper mainframe.
Well, the mod is far from begin finally, but a first test showed it works, and the 4x4 feature of the unimog remains untouched, since the engineshaft is connected to the main differential.
However, i'm planning on gearing down to torque within the portal axles. Another aspect that needs to be change is that the platform needs to be raised by on one unit as the motor sticks out of the frame to far.
I've done just about the same exact thing, but under the main cab of the truck where the I-4 engine was. Currently my XL is 4 studs above the drive shaft leading to the center differential. The only issue I'm having is coming up with a gear combination that is 4 studs tall and 2-3 studs deep that fits and doesn't involve 8T gears stripping. I can lower the XL down so that it's 3 studs above and run a 16T-16T. I can't use an 8T-24T at this spot as this interferes with the steering axle, and I would need to do something with the front PTO as well, as the XL would now be in its way. Is anybody doing something similar? I'll try to get pictures up later this evening.