overheating issues?

will i have over heating issues if i use a nemesis x7 with a barracuda 125 esc using a 5s lipo? if so what motor esc combo do you think i should use. thanks

What are you going to be running this in? It sounds like a boat setup.

In any case, it's kind of hard to tell what a nemesis motor will do, because Fine Designs is rather tight lipped about the specs of their motors.

The Nemesis motors are just relabeled Feigao motors, with a different color can. I'd just find me a Feigao motor so that I could be sure of what I was getting. Besides, you'll pay a bit less for a Feigao. I know that Fine Design guarantees the bearings in their motors, but good luck cashing in on that one.

In my limited experience with boating, I've found that the Feigaos run pretty cool, with the water cooling. If you are going to be running this in a car or truck without water cooling, you'll need to be more specific about your proposed setup.

[BrianG]

And welcome to the forums!

[bdebde]

Originally Posted by AAngel

What are you going to be running this in? It sounds like a boat setup.

In any case, it's kind of hard to tell what a nemesis motor will do, because Fine Designs is rather tight lipped about the specs of their motors.

The Nemesis motors are just relabeled Feigao motors, with a different color can. I'd just find me a Feigao motor so that I could be sure of what I was getting. Besides, you'll pay a bit less for a Feigao. I know that Fine Design guarantees the bearings in their motors, but good luck cashing in on that one.

In my limited experience with boating, I've found that the Feigaos run pretty cool, with the water cooling. If you are going to be running this in a car or truck without water cooling, you'll need to be more specific about your proposed setup.

Fine design does have plain 7XL's (and other XL's) as well as their own XLT's (read mystery motors).

[BrianG]

lol, "mystery motors". A surprise with every purchase! :)

Thanks!
Well i plan on installing it in my revo, using the stock transmission, i remember seeing one other person do this but i cant find the link. The reason i am using the barracuda is so i can save a few dollars by buying the motor and ESC as a combo. But my neighbor has a fine design lst2 and when ever he has had a problem the owner of fine design has always taken good care of him, i.e. getting a new motor when he was just switching the stock clutchbell out for a threaded clutchbell. but on the issue of cooling i plan on making some heatsinks for both the motor and the ESC.

[BrianG]

I used the stock tranny in my Revo conversion, but did mod the tranny a bit.

Sorry, I didn't catch the join date. WELCOME!!!

Well, some have had good luck with Fine Design, but many have not. No sense in even debating it.

As for your setup, many are running the 7XL in the Revos with good results. How hot your setup will be depends a lot on your driving style and the ambient temperature of where you are. The 7XL does well for 4S setups.

If you are going with a 5S lipo setup, I'd look at a 9 or 10XL. My 9XL on 5S is insane in my 8ight T.

As for the esc, I like the Mamba Max for 4S. 5S on a MM is iffy. You should probably look at a Quark Monster Pro for 5S.

What did you do? FOC, or metal gears?I know if i go brushless I"am going to need to completely overhaul my drivetrain to handle the power. on the MM it says it can only handle up to 3s, can it handle more without melting? the main reason im going 5s is so i can faster then my neighbor, lol but i think i might just use one of his 4s batteries with my setup to see how it runs, then if i want any faster i can just order a 5s.

[bdebde]

MM can handle 4s no problem with a UBEC and internal BEC disabled. Some have even had good luck at 5s.

Of the five Mamba Max escs that I have, two will run 5S well. The other three just sit and do nothing when I plug in a 5S pack.

Considering that the MM is half the price of the Quark, I'd just setup for a 4S system and run the MM with the 7 or 8XL. Just make sure that the battery is up to the task. What does your friend have in his truck, as far as the motor goes? Is he running the BK 9920?

Oh wait, if I remember correctly, the LST is a monster of a truck. It weighs something over 13lbs, doesn't it? If it does, a Revo at around 10lbs. should walk all over the LST if you were running a 7XL on 4S lipo.

How are you going to setup the motor, etc? Does FD have a kit for the Revo too? If you haven't already, you should check out the RC Monster store.

no fd does not make a kit but i am currently machining one from some 6065 aluminum stock that i have. I am baseing my design on the one that they sell here except mine with have a finned base plate. But yes my friend runs a BS 9920 with a xlt1, that truck, heavy as it may be, will beat my revo 3.3(with a nitro motor that is ported) on top end and on bottom end. car action did a review on it and its top speed was 42mph, not half bad for a 13lb truck. but my battery sould be able to handle the draw its a maxamps 5000hv 5s battery, that is if i decide to go 5s but if i go 4s it will be the same battery except only 4s. heres the specs.
# 20C Constant(100 amps)
# 30C Sustained(150 amps)
# 50C Burst(250 amps)
I also saw a video of a person who used a MM with a XL8 with 5s and it ripped like crazy, but a XL7 will give me more top end correct?
http://www.youtube.com/watch?v=_2dIb...elated&search=

oh what other motors are out there that work well with the MM but wont break the bank? like under $150 would be nice.

For under $150, the Feigaos are about it.

5S will be too much for the 7XL. I think it'll run really hot. For 5S, I wouldn't go much hotter than an 8XL for all out speed. For cooler running I'd go to the 9XL for 5S. Believe me, it will be insane.

Check out this thread...http://www.rc-monster.com/forum/showthread.php?t=7136

The video is of my 8ight T, which weighs around 10lbs running a 9XL on 4S lipo with a Quark monster Pro controller. With 5S it is just nuts. According to BrianG's speed calculator, I should be getting around 37mph as the truck is setup with 4S. On 5S, the calculator says that I'd be getting over 46mph with the 16/46 gearing that I was running.

Just keep in mind that it's always better to make more rpms with more voltage than just getting a higher kv motor.