Roelof

A body fitted for the MRX4 is a direct fit for the MRX3

Also my P909 painted by a friend, also my camera was very selective with the filename

FF25510

thanks Roelof, i want to make the car alive after sit for years, also any suggestion on the body for how far from the bumper?

thanks again

Roelof

I have it arround 5mm from the bumper, it runs very stable

FF25510

thanks, will get one and try

gotmotor

Mike_Swauger;I ran it at 12mm in front of the bumper. I would not mount it more then 13mm or less then 11mm.

Maybe try this.

Team Kamikaze

iTrader: (3)

Not 5mm from the bumper as someone else posted.

Roelof

Have you ever try it ?

fulcrum2

The Velox guys run run it 21mm in front of Bumper (Josh Cyrul setup-sheet). I tried it as well and it results (obviously) in more steering. However, on my MRX-4X the 909 is still not steering as good as a Zytec. Are you guys running the 909 with longer rear H Arms or what?

Roelof

I am running the lowest arms in standing up position.

fulcrum2

Unbelievable! I could not get the 909 to create enough high speed steering and finally ditched it...
It was 20 mm in front of bumper, ass up high in the air and gurney with almost zero extension. Maybee I should try another one. Something was really strange there. I did'nt use any stiffeners, but this should not make a big difference...

PMSorber

Its very depending upon track-grip, its not the same everywhere.

YBSLOW

iTrader: (9)

Me too............(I used the stiffeners though).

Roelof

In the MRX4X topic you can read a lot of people using longer arms for the rear bodymount. Ofcourse it creates a lot of grip but it creates also a lot of drag and less cooling for the engine. My opinion is that grip has to come from the suspension, I like to keep the body low and do change the suspension where it is needed.
By the way, the EFRA does have some rules on the drawingboard about the height of a body and maybe we have to run with 150mm maximum height very soon.

Yes, not only track but also the setup of the car.

MaxG

Hi all.
It is for MRX4X.
Tell please, on the MRX4R it will be same?

wingracer

iTrader: (24)

Yes, as a starting point anyway.