18/66 is a taller gearing than your were running........so no. Well unless you want a 50 MPH fire ball :005: . Basically you could play with the gearing a little. Somewhere from 12 to 14 tooth pinions. No higher or it will get hot like before.

thanks for these informations Squee ;) therefore i have to conclue that this feigao 540C 9L is not as fast as i thought... perhaps a 7XL should be the motor i need???

I've another question: what glue to use to bond the front endbell of my motor? CA glue or Araldite??? (i think the heat has fused the stock bond... )

what do you all think about a Feigao 8XL??? is it a good motor to run with the BK9920?

The 7XL will be a good motor as will the 8XL, but it depends on what you want, speed or runtime. Also, I would NEVER glue the end bell on. There only pressed on from the factory. If you have a RCM heatsink, you don't need to worry about it. If you don't have one, you might want to get one.

my 9L is a 540 C ... no need for a heatsink, but i thought to buy a 8XL plus the RCM heatsink... or another one... ok ok i'll bought the rcm one :) hem...
can i keep my actual gearing with the 8xl?

The XL will need a taller gearing than the 9L but will also need a 5mm pinion. Not sure about your 9L...Does it have a 1/8th inch shaft or 5mm?

i have 12T to 20T 5mm bore pinions... but i think there will not be enough difference between 9l and 8xl to satisfy me...

Put more juice in it then! LOL

yes that's what i thought!!! lol! :)
Prhaps a 4s or 5s lipo would be nice... but probably too much y motor...
I have more and more fun with the 9L since Squee gave me the good ratios to use... that's amazing how the motor behaviour is different with my new ratio (16/66)... old one was 16/72, the motor didn't "took its turns"...
I will have a look at Maxamps products... 4s lipo should be a solution...

>>>Please, can someone confirm that 5s lipo are too much for a Feigao C 9L + bk9920 ???

With the 9920, i would go 5s

i will try to find 2 5s packs... don't want to brek the balance of my car...

Mike has two 5s apache that i hear are good. spendy, but good

now i would like to complete this post with some pics of my cars, to thank you for your time helping me to find the way to go with my stuff.
God bless RCMonster.CoM !!! thanks holly guys :)


http://www.chakaboum.com/emaxx/P1030180.JPG

http://www.chakaboum.com/emaxx/P1030166.JPG

http://www.chakaboum.com/emaxx/P1030192.JPG

don't let some unused cooling fans in your case, there is always a way to use them!!! ;)
http://www.chakaboum.com/emaxx/P1030203.JPG

Why are you running Walbash's?? They are made for the Revo or a 3.3 Maxx with the new knuckles. Those rims actually make your truck as narrow as a old pre-2.5 maxx. By the way, you said your running 16/66!?!? Thats higher than 16/72. You went the oposite way. Whats your temps as of now? It might have been under geared instead of over geared.

??? i never had any problem with the wabash, my temp is under 90°C with the 16/66 ratio... and runtime is about 15 min. This is a legend... that's not because the manuf. doesn't advise the use on e-maxx, that you can't use them...
Why should it be a problem? you seem to be horrified... personnaly i like this drive style... i also run mashers and mulshers on 40 serie beadlock wheels...

i don't understand you about the gearing, it's just a question of rims wideness, not diameter???