Neu 1515 or 1521??

I was just making a statement regarding running the 1515 2.5d in my truggy on 6S and it getting warm. In fact I think that I got it up to around 165*F once, but that was geared to bust butt and I was running in grass.

As for monster trucks, I run the 1515 2.5d in my Monster GT on 4S and 5S lipo geared conservatively for about 35 mph. I can run all day with no issues. My MGT goes about 13 lbs with the 40 series Moabs on it.

I just made the above recommendations because it's what I would do if I had it to do over again. I just have to comment again, that when the going got rough the 1515 2.5d did heat up a bit on 6S.

Contrary to what some are advocating with regard to the Neu motors, I still believe that keeping the rpms to about 30,000 is a good target for a truck that's going to get bashed hard. For a 1515 2.5d, that means running it on 5S lipo or something similar.

My only concern with going with the 1521 is the torque. I already break tranny parts with the 1515. With the 1521, it might be worse.

[Purplefade]

jhautz - Love the savage, nice build! What are you using for your motor mount? I've been using the ring mounts from FD for quit a while with good luck, but am looking for something maybe a bit "tougher"? As for bulks, I've found the Golden Horizon 6065 bulks to be very nice and not toooo heavy for what they are. I also use a NOVA RC 7075 diff cup in the rear with K4.6 gears and have had no issues with my setup running my 9XL on 18.5v - its actually held together very nicely.

Thanks for the advice on the 2psd, I'll certainly be bumping my shift points up from what they're at now... Had been playing with it for some time but hadn't considered the troque of the brushless throwing it into 2nd right away... I've also kept the mechanical brakes as I figured for what it was worth it took some of the heat load off the motor and esc.

For speed control I'll be using a modded Quark, love'em and have always had good luck with them. Thought about going with the MGM, but I already own the Quark and it works



AAngel, I hear you on the torque from the 1521s, I can only imagine they're drive train killers if you don't have a light finger!! Also good to hear on your 13 lb MGT, makes me feel better that I shouldn't have any issues with the 1515/2.5d in my Savy. Heat considered, maybe I'll put together some 5S2P packs, see how things go and up it from there temps permitting


I think you guys have once again solved my issue for me, it looks like with the two speed, the right gearing and pack setup that I'll be going with the 1515/2.5D (1700Kv) motor. Shouldn't pose any issue for it with the "lower" gearing of the two speed and give me much quicker spool up than would the larger 1521 as well as save me BIG TIME in replacement drive train parts!!

Many thanks again,
purp