why are my temps so high???

[Mozzy]

Is there anyone on here that has been running the same car as mk351e with a set up that doesn't over heat?

At least this way mk351e will see what works with others & understand a little more of his own set up & it's capabilities.

Now, when I was running my CRT with a Neu 2700, MM & 4S 6000mAh, 13t pinion everything else stock, the car would absolutely fly.
No wheelies at all & I was/am running a torsen centre diff (basically it's a locked diff when the front loses traction & makes it 50/50 split.)
It was blindingly fast, but(!), everything but the batteries ran cool.

By the end of the run the battery would be nudging 85 degrees C(!) on a coldish 15 degree C day with a runtime of a mere 5mins 50secs (I timed it).

How would reducing current help mk351e's temp probs?
I don't get some of this stuff at the best of times, so, this just makes it more confusing.

I'll be working for my friend now who's currently in Tawain, HK & China, securing contracts with companies to supply components for everything from nitro to BL.

I've also got alot of guy's interested in BL conversions, but, I'm at this stage limited with knowledge to be able to say, you need this, this, this & this & you'd be able to run reliably from day one for this purpose. Obviously, the setup & requirement of the person's use would vary & therefore so would the set up.

I treat you guy's like an encyclopedia of the BL world as I know it. I listen/read everyone's input then generally go for the most common answer. Thanks.

By the way, so far after my op I'm doing alright, very sore after have them saw through my sternum. I'll post pics of the clots that were removed from my lungs after the 12th Sept when I get back to Melbourne, I know you'll all be saying holy crap, cause, I certainly did! Just happy to be alive at this stage.

Long live BL & me!!

[bdebde]

Originally Posted by Mozzy

Is there anyone on here that has been running the same car as mk351e with a set up that doesn't over heat?...

I run a 12lb Muggy on 6s with a Neu 1515 2.5D/F. I was running 12/48 gearing (just under 40mph) with no heat problems (150 motor 140 esc) with MGM 16024. I have geared up to 13/48 (a bit over 40mph) to give the new MMM a workout, still no heat problems (150 or so on motor and esc).

I run 40 series bowties, which save about half a pound of rotating mass and are a bit smaller diameter than stock. But I even tried some larger tires than stock (and about a half pound heavier), without much rise in heat; although the "punch" was noticably missing with that set up.

I have tried a higher kv motor (similar kv to 1515 1Y), a Plettenberg big max; but results were not good. MGM ESC would thermal if running for long as well as batteries getting hot, and ending with a demagnetized rotor. A lower kv motor would be the best bet IMO. I am quite happy with my 2.5D set up, it has plenty of power and runs forever without overheating. I may be able to get a bit more speed with higher capacity (or higher C) batteries, but it is fast enough for me now. I considered a 1521 1Y, but Mike had none in stock at the time I ordered the motor, that may be the way to go if you need more speed.