2.5d is 1650kv a 5/6s motor - You only need 2nd gear...

That motor is a driveline killer! :) Stock up on diffs and CVDs... If i'm not careful I can shear a traxxas steel cvd or an output shaft...

http://i168.photobucket.com/albums/u180/Arct1k/031.jpg

you have a 2d and the length of a Neu 1515 is 68 mm, I would also suggest the mod to remove the 1st gear and lock the tranny in 2nd, I used to have a converted 3.3 Revo with a 1515 2.5 d on 6s lipo with stock diffs and drivelines and never broke anything, it will be ok as long as you dont go WOT from a stop ( this is where your amp draw and physical stress on you drivetrain is the greatest)

Gave it a run today using the Medusa 36-60-2000 geared 15/40 with a normal gear set and had the two speed set to almost immediate change to 2nd.

SLOW!

I think top speed would be lucky to hit 30? Is this more of a 5s set up? Can I gear this or the NEU 1515 2D to run on 4s?

Temps were all fine, and the Clutch got to 150 max (so not sure why people are having clutch issues) Didn't have much of a tendancy to lift the front end up either.

I like the feel of it, coming from using a Baja for over a year, this is a lot more predictable for me.

The Medusa I usually run under a fan will the Neu motor I have have more torque and will it be comfortable geared say 18/36 with a wide ratio set without a fan?

Thanks to those who have chimed in so far, but not getting a lot of feedback on gearing which is my concern at the moment.

Yea that motor is a little slow for a 4s setup, i would either get a bigger batt, 5 or 6s, or a higher kv motor, maybe a 2300 medusa, or a 2650 castle neu. The clutch really helps with the wheely problem.

So wait, when I suggested a 60-2000 first up people were like "get the 70mm" and now that I went with a Neu (which is meant to be the shiznit) it's too low a kv?

It's all a bit confusing.

Anyway I found out the motor was a Neu 1512 2.5d

I ran this geared 15/36 with standard ratio, temp around outside 82.4

After 10 min, Battery at 90, ESC at 110, Motor at 133

But it feels slow!

How can I gear this to be quicker on 4s (safely)