I couldn't find my original post so I'll explain it again. First you need a small sanding drum, below is a picture of a kit sold at Lowes, but you can buy the indivdual sanding drums at your local hardware store for a few bucks. You need one that is about 1 1/2" or 2" across (as close to the size of your motor can as possible). Use a slow speed (so you don't melt the plastic) and heavy gloves for safety.

http://i142.photobucket.com/albums/r...andingdrum.jpg
Sanding drum kit

http://i142.photobucket.com/albums/r...3/DSC05340.jpg
Chuck it in a drill press (best way) or you can use a hand drill.

http://i142.photobucket.com/albums/r...3/DSC05347.jpg
Use a silver Sharpie to mark the area that will need to be taken down.

http://i142.photobucket.com/albums/r...3/DSC05346.jpg
Bolt the support onto the chassis and slide the motor in and out a few times. It will drag on the brace and scrape off the silver where it rubs.

http://i142.photobucket.com/albums/r...3/DSC05349.jpg
Using the scrape marks as a guide grind off some of the plastic a little at a time, test the fit and reapply the sharpie if necessary to see the high spots. Be sure to use heavy gloves when working with a sanding drum.

http://i142.photobucket.com/albums/r...3/DSC05351.jpg
Go slow and test fit several times until you get it so the motor will slide in without too much force yet still be snug to provide support to the motor.

I just use double sided foam mounting tape between the motor and the chassis. The chassis will flex naturally, and imo, you don't want the motor to get in the way of that. I also use the same 3mm screws the mount the spur gear to the center diff to mount the motor, and they have worked great.

Shark,Thanks for posting the pictures !
The question is now where do I aquire some of these "motor support braces"
I looked on Losi's site in the Hop ups,optional & parts list and see them no where ?
Thanks.

They come in the Losi conversion kit. Can also be purchased seperate from the losi conversion kit. # is LOSA4462. Come with 2 other pieces also.

Wonderfully pictured explanation, Many thanks Shark.

Losi please make motor supports with several thickness to fit mainstream 36mm and 42mm motors.

Bondonutz, I order them from Impaktrc. They carry a lot of hard to find Losi E-parts and have pretty good prices.

Here is the url, looks like you get the bottom, top plates and the motor support brace for under $6.

http://www.impaktrc.com/product_info...oducts_id=3196

I agree 100% that chassis flex is a good thing. I was a K-boy (Kyosho) for the longest time, but I tried a Losi and couldn't believe how well it handled. I attribute some of this to the flex-tuned chassis. You probably don't want to bolt the rear of the motor down but the way the Losi brace is designed, well it allows a little sliding action when the chassis flexes. I did some eyeball testing and put some pressure on the chassis too see where the most bending was occuring, and it appears the most flexible point was just in front of the rear bulkhead brace and well short of the center diff. Even with the Losi motor brace in place the chassis could be flexed with no problems. I mean if you think about it, would you mount a nitro engine in a buggy just using the two front engine mounting bolts? A nitro motor is held down to chassis even more so than any brushless setup I have ever seen, and the chassis seems to flex just fine. And to have an electric motor that weights close to a pound just held by the front endbell and two tiny 3mm bolts and then slamming it down from 6 feet in the air over and over, just boggles my mind.

I think I'm going to pick up some of those wheel nuts. I was testing my 8T yesterday at the track. I was coming down the back straight away approaching a big jump when my front left wheel decided to come off. The wheel hit the jump and flew! the truck cartwheeled over the ramp. Luckily I found the nut and was able to get some more practice in.

big thanks !

can you guys tell me which modifications are necessary to fit the mamba monster and the 2650kv motor? I currently have a xcelorin and it is completely plug and play!

Excellent Thread!

For motor screws, use the same screws that hold the differentials together. You can also get the motor wires to point in pretty much any direction you choose (so they don't hit the body). Since the endbell rotates 120 degrees and the motor mount screw locations are 90 degrees apart, there are actually 12 possible directions to point the wires.

Nice!!! How did you attach the ESC? Zip ties?

Yes. You can also buy the Mamba Monster hold down bracket which is made from Traxxas.