I'm currently trying to convert my Dad's CEN 1/10 rally car into an electric.

I want to make sure I get something to adequately power it. The nitro engine is a NX 3.0 (.18 I think). The transmission is a two speed and I would like to use the nitro gearing and clutch if there isn't a problem doing so with electric.

What kind of motor and esc should I consider to power 4wheel drive and get around 45mph that the car is advertised to do out of the box? Speed isn't a huge deal if it doesn't go that fast.
I have a slash that is stock. Along with a Quark 65a brushless esc and a VXL motor on the way. Would the XL5 and 12T Titan be up to the challenge other than the speed?

I have 2s and 3s A123 packs. My brother has 6 cell nimh packs.

Once I solve my biggest issue of attaching the gear and clutch assembly to the motor then I can do some testing. Just looking to pick a few brains that have a little conversion exp.

Honestly I don't think you need The Clutch setup.. You would usually use the Higher gearing.. You would get a pinion to math the 2nd speed spur.. Electric motors have alot more tourqe so 1st speed would be almost useless. To get the pinion you would need to know what Pitch the nitro spur is. For speeds it ALL depends on your setup.. Honestly the setup you had stated would not get you much more then 25 if that I don't believe you can use a 3s pack or even a 2s.. I understand the 3s is a A123.. If you ran Either a MM combo..VXL combo you would be looking at around 65ish with good batteries and the Right gearing. Some will say higher but I will give you the more realistic speed.

Will the fact that it is a 4 wheel drive affect the strain on the motor? Would I need to gear down compared to a 2 wheel drive in regard to motor temps? I wonder if the extra one from my Slash will work. I'll have to try.

Wouldn't I need a slipper clutch of some sort then if I don't use the bell style one?

Thank you for the info.

the clutch bell on your nitro motor is not a slipper.. it doesn't slip it only grabs when at the certain "RPM.. You should have any problem with that overheating..It should all be good

Doesn't electrics have a slipper though? Wouldn't I need to put one of these in?

If I used the nitro clutch I would have no low speed control. OK that plan is scrapped. Thank you.

The Slipper is in the Spur gears..

Oh well that makes it easy. Thank you.