What's the deal with Sea Monster motors ??

[RC fetish]

Hey guys,

I was wondering about Sea Monster brushless motors ??

WHY are they so long & heavy compared to other motors of the same O.D. & Kv ?

- 2856 3300Kv is 77mm long @ 237 grams (MUCH longer & heavier than other 2856 3600Kv)

I ask because... I have a 2850 3300Kv in my Offshore Infinity, and would like to bump-it-up' a little more.

But WHY is the SM soooo long & heavy ??
Does it have more torque or something' else ?

I'm a newbie to the Electric motor world... as I'm a Internal Combustion guy

THANK YOU for sharing any factual details or experience with these motors

Peace, Dave

Ebay item # 360888225304

http://www.ebay.com/itm/D7s-Sea-Monster-inrunner-Brushless-Motor-BL2856-KV3600-Water-cool-for-RC-Boat-/360888225304?pt=Radio_Control_Parts_Accessories&hash=item54069d4e18

[flraptor07]

Just a guess but I'd say part of it is because the cooling is built in instead of having a seperate cooling can like most other motors.

[Fella1340]

The cooling jacket adds the extra weight. I bought one of these when I first started into rc boats and found the performance terrible. I believe they are two pole motors (going off a bad memory) and the torque on then was awful. It took a long time to get my 24" mono on plane. It also ran hot, motor wires ended up having the coating break and fall off and as you tell my experience was not good. I really think you would be disappointed with the result if you changed to one of them and you may see a performance decrease. I went to a regular style inrunner about the same size and it worked much better. Eventually it ended up with a small 36mm motor which is what I should have done in the first place! Any feedback I was able to find on those motors (after buying) wasn't very positive. I also had to use bearing retaining loctite on the front bearing to stop the shaft from spinning on the bearing I.d. That's about all I remember. Good luck with whatever you choose!