My home made battery tray and front hinge
 

I made thoose pieces for a test :

Battery tray (simple plastic 2,5mm) :

http://img.over-blog.com/600x450/1/9...6/SDC10231.JPG

http://img.over-blog.com/600x450/1/9...6/SDC10235.JPG

Front hinge pin brace (epoxy 2,5mm) :

http://img.over-blog.com/600x450/1/9...6/SDC10238.JPG

http://img.over-blog.com/600x450/1/9...6/SDC10237.JPG

All good, but the fan on the speedo is not going to be doing anything for colling positioned there.

The fan needs to blow air across the fins if you cant place it on top. Move the fan in front of the speedo so that it will blow the air across the fins, even if the cables are in the way, some air movement is better than none.

Hope this helps.

Col.;)

Thx for the tips Colinevan, I'll do it :)

Nice

Better still mount the whole esc on its side with the fan correctly positioned over the fins!
Or ditch the fan completely like I have (at your own risk of course!!) :)

nope leave the ESC as it is and put the fan in front of it

Well, in this position, with my 8.5T motor, absolutly no heat from the ESC, so...
If I change something, I'll put the fan in front of the esc :)