I finally got a chance to test this cover out. With a new baby in the house theres been little time for RC's but my wife actually SUGGESTED we go to a local parking lot so I can drive my rally and my 2 year old can run around. Needless to say, Cali got a good workout chasing the rally.
The parking lot is covered in a decent coating of winter road sand. Its a mix of super fine dust and sand with a few small stones mixed in. Without a cover, the rally chassis literally gets filled with sand... and I mean FILLED. With the non LCG dusty motors shroud rigged on the chassis only the rear of the chassis tub, all around the motor and bearing area, gets filled, the front stays pretty empty. I figured the fact that any sand was getting in at all was due mostly to the cover not fitting properly. So as soon as the LCG cover came out I bought one. Unfortunately they changed more on this cover than just where the nerf bar slots are located. Both the front and rear sections of the cover, infront of and behind the nerf bar arms, is shorter than with the non LCG cover. The cover itself fits nicely around the nerf bar mounts but because there is less cover in front of the nerf bars I think the wheels are still throwing sand under the front of the cover. Im going to try a foam block to see if maybe that will help keep the sand out but after 2 packs with the non LCG cover, then 2 packs with the proper LCG cover, the sand in the chassis is pretty much identical.
My last resort is to find and try one of the Jconcepts over trays. They arent very common right now, especially in canada, so ill have to hunt one down. Who knows, with enough velcro, maybe thats the answer im looking for.