Tamiya Semi - Powering the Steering Axle
 

Can a Tamiya 3 Speed transmission out of a High Lift F350 be used in a Tamiya Semi Truck (King Hauler)? I know gear ratio's are not the same. The F350 has higher gearing (less torque).

Can a Tamiya front axle out of a High Lift F350 be used in a Semi Truck (King Hauler)? Does it have the same gear ratio as the semi's stock rear axles?

What I'm trying to do here is, getting the steering axle of the semi to pull as well. What is the best way to doing so?

Re: Tamiya Semi - Powering the Steering Axle
 

I can't tell you for sure one way or the other on the axles, however I can tell you that in the case of a four wheel drive setup like you are talking about, it does not really matter what the transmission is geared at but both the front and back axles have to have the same gear ratio.

-Mike

Re: Tamiya Semi - Powering the Steering Axle
 

The High Lift axles, the big rig axles, and the TLT-1 axles, share much of the same parts, including the gears. So yes, the pinion to spur gear ratios are matching. Meaning you can a TLT-1 axle or a High Lift axle for a powered steering axle on a big rig. The TLT-1 axle is slightly better looking, and a slightly more narrow as well, however both can be used. It's simply a matter of fitting a set of rims to the axles which have the poper offset to keep the wheels tucked inside the fenders. I believe most guys use the inner dual rims off the rear axles, to achieve the proper offset. The drive hexes match right up to the axles.

Re: Tamiya Semi - Powering the Steering Axle
 

You can also ask Joe's Truck Stop for one of his big Rig Tranny conversions that it uses the stock tranny and puts a shaft out front as well.
I have one on my future build and it work the knuts.
Greg

Re: Tamiya Semi - Powering the Steering Axle
 

Re: Tamiya Semi - Powering the Steering Axle
 

Thanks for the replies!


Where do I find "Doc Gear"?

Re: Tamiya Semi - Powering the Steering Axle
 

Has anyone used this from RC4WD? Do they work well?

http://store.rc4wd.com/T1-Disruptor-...ase_p_859.html

Re: Tamiya Semi - Powering the Steering Axle
 

Re: Tamiya Semi - Powering the Steering Axle
 

Thank you. I don't think I would have found them myself.

Re: Tamiya Semi - Powering the Steering Axle
 

You can extend the bottom shaft yourself welding a slightly larger steel rod with a mig or silver solder and trim to size with the lathe... there's quite a few lathes in your Islander group, if you don't have one.

The downside to this modification is there isn't much room between the front of trans & front axle putting the universals at impossible angles... you could slide the trans back, but then that distorts all the other assemblies in the trk.

The hilift trans is a great fit for making a 6wd trk, can be found in for sale threads in this forum or on ebay for around $75.

Re: Tamiya Semi - Powering the Steering Axle
 

Or you could read the 3 page sticky thread at the top of the truck tech page (Driven front axle options?).

http://www.rctruckandconstruction.co...read.php?t=128

Travis

Re: Tamiya Semi - Powering the Steering Axle
 

Thanks again guys!

Albert Jr