4-Tec conversion

[lincpimp]

Originally Posted by BrianG

Wow, I thought mine was loose with ~1/2" of sag! There's no way I can get it off without removing the end plate from a pulley.

Yeah, you adjust tension by shimming under the 4 screws holding down the front transfer shaft. Not very effective though because by the time you get the long belt right, the front is too tight. I'd rather see a simple spring-loaded idler riding on a bearing.

I was going to make one for it... I do need new belts, and the 2.5 and 3.3 use different pulleys and different belts too. I think my other belt is the wrong one (so is my luck). My front belt is just right with no shims, so I guess that I need a new center belt...

I may give the one I have a try...

[BrianG]

Originally Posted by lincpimp

I was going to make one for it... I do need new belts, and the 2.5 and 3.3 use different pulleys and different belts too. I think my other belt is the wrong one (so is my luck). My front belt is just right with no shims, so I guess that I need a new center belt...

I may give the one I have a try...

The only difference between the 2.5 and 3.3 belts is the front and rear belts. The center is the same since it uses the same pulley size. The f/r small pulley went from 15T to 20T IIRC, so a larger belt is necessary.

You might want to just brace the chassis. I know that the belt had a ton of play on mine until I braced the chassis. If you push down on the center belt, you can actually see the chassis flexing.

[lincpimp]

Originally Posted by BrianG

The only difference between the 2.5 and 3.3 belts is the front and rear belts. The center is the same since it uses the same pulley size. The f/r small pulley went from 15T to 20T IIRC, so a larger belt is necessary.

You might want to just brace the chassis. I know that the belt had a ton of play on mine until I braced the chassis. If you push down on the center belt, you can actually see the chassis flexing.

This is true, I am thinking about the front and rear belts. I will rig some sort of brace up, I have a few ideas in my head, but will wait for the neu cells to come in before I do anything.

On another note, I destroyed the front belt just now... I guess I get to order a new one, or maybe check the LHS (waste of time usually). The stupid hole in the chassis at the front allowed a rock in and it jammed between the diff and the front upright/shock mount. I may add a hole in the front to allow debris out... Bad design not having a sealed front and rear belt setup... Maybe I can make something. I was thinking about a new chassis for the beast...