Well, I picked one of these rollers up today. I was debating back and forth 'tween this and a CEN Matrix TR Arena. As usual with me, even though I really like the CEN better, I chose the cheaper of the two! One of these years I'm going to actually purchase something New in box!!!

In regards to the motor mounts that mike sells - What drives the difference between them all? Is it just mounting holes (in relation to the chassis holes)? Is it possible to just randomly pick one of them and drill the appropriate matching holes in the chassis and use it? Or might we have to do some grinding to provide clearance for the center diff supports?

If i remember correctly rene said that mike makes a motor mount for the hellfire .

JT actually it is not just based on mounting holes in relation. some may be more similar to others but the real differece is the diff configuration and that is why it take a while to design a mount. so the diff configuration might not be the same for a mugen for example and a hellfire. hope i helped

In what sense? All we are trying to do is to position our pinion on the motor relative to the "spur" on the Diff, correct? If the diff gear extends past the edge of the diff support, then its basically just a matter of sliding the pinion in to mesh up with it....of course making sure that its parrallel. I'm sure I don't quite understand yet how they mount since I've never installed one, so I'm just trying to get a better understanding.

http://www2.towerhobbies.com/cgi-bin...?&I=LXNDC9&P=Z
Intergy makes a diff cup for the hellfire, don't know if there any good though.

- You should have got the CEN (IMO). But anyway.

- DIfferences in the mounts are obviously the hole patterns on top and bottom, but the positions of the bearing (depth and height) too. Some mounts have other "specials", for example the CRT one features more gearing adjustment, because the CRT uses a big spur, etc.

Daf

Oh, great, now you tell me!!! My gut feeling is that the CEN is slightly higher quality throughout (especially with the FTE version). But the center brace would have given a few challenges.