jason701802

I've got a Havoc 3S with Ballistic 8.5T installed in a HPI Cyber 10B running off a Ptotek RC 3300mAh 3-cell 25C geared as low as I can (16/84) (it's painfully slow). After a few minutes of running, even if I run it soft, the blue and red LEDs start blinking "possible ESC thermal shutdown", the ESC and motor are barely warm when this happens. It also ran fine on a 6-cell NiMH. I have been in contact with Novak and have even sent it in and they have been no help. My LHS also has been unable to provide any solutions. I'm getting desperate, I really need some help.

losifiend

8.5 is very fast geared right on 2S. Why do you feel the need for 3S if its giving you problems?

jason701802

Because it's supposed to handle 3S, so that's what I bought and I don't want to buy another battery.

ThunderbirdJunkie

My Feedback: (3)

Is there binding anywhere in the drivetrain? That's the first thing you should check.

jason701802

Nope, both I and a few people at my LHS have looked it over for that. I have also run it in my rustler, and although it didn't happen as fast, I had the same problem.

ThunderbirdJunkie

My Feedback: (3)

Jason, it definitely sounds like you're under-geared. There are no bigger spur options so you can drop to a smaller pinion? Do you have a picture of the spur, maybe something else is interchangeable? On the OLD HPI belt cars, you could run just about any spur you wanted, but ThunderbirdJunkie is fairly well clueless when it comes to the modern shaft drive cars.


Nevermind, just looked.
It is THE EXACT SAME SPUR that came with the old belt-drive RS4s.

Try this and a 14t pinion:
http://www3.towerhobbies.com/cgi-bin...?&I=LXEY42&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXEX12&P=7

redfisher1974

Have you taken the temps when it does thermal? I know some people have had this problem aand have had to send it back to novak to flash program the esc to fix the thermals.

redfisher1974

one thing you can try is to turn your drag brake to zero, the punch control to one and the throttle to Expo instead of linear. Should bring the temps down abit.

ThunderbirdJunkie

My Feedback: (3)

Just thought of something else. Double check the clearance around the spur for extra room before you go putting bigger spurs on

jason701802

Let me clarify, when I say painfully slow, I don't mean slow, I mean far slower than a system like this would be expected to go. I don't want to gear it down any more.

I'm looking at either going 2S or replacing the stator with a 10.5T, any comments or recommendations?

ThunderbirdJunkie

My Feedback: (3)

If it's too hot
It's not geared right.

plasmaedge

it may not be that your over geared but as thunderbirdjunkie said you may be under geared. Try running a smaller spur gear or a larger pinion.

Willystylz

I was running a 18/87 on my SC10 on 2S with an 8.5t. Now with that buggy I would bet you're overgeared since you're running 16/84 at 1/2 again more voltage. Knock a few teeth off the pinion or get a larger spur.

But, just noticed you said it's painfully slow........so I'm confused. Any vehicle operating smoothly (no binding anywhere) should not be running painfully slow with an 8.5t on 3S. Something is wrong........and probably not necessarily your gearing.

ThunderbirdJunkie

My Feedback: (3)

Ok hold on.

Overgeared, in ThunderbirdJunkie's language, means too much gear.

IE too big pinion/too small spur

Undergeared would be too small pinion/too big spur.

You guys are talking opposite and it is frying his simple mind.

Willystylz

LOL Thunderbird you're contradicting your thinking in this thread and I'm getting confused now. Just had to actually type in the definition of undergeared on www.google.com

ThunderbirdJunkie

My Feedback: (3)

No, you guys confused ThunderbirdJunkie and he got it backwards

Willystylz

No, ThunderbirdJunkie confused ThunderbirdJunkie in his first line in Post #6...."it definitely sounds like you're under-geared. There are no bigger spur options so you can drop to a smaller pinion" [sm=lol.gif]

ThunderbirdJunkie

My Feedback: (3)

ThunderbirdJunkie is done for the night. It's far too late for thinkin and not enough booze in the house to finish it out

Willystylz

It is OK.........the ruler of everything is allowed a cranial queef every now and then........just don't let it happen again

overrev

He is not over or under geared he said the motor and ecs. aren't that warm when shutting down. Sound more like a bad esc. Do yourself a favor and get a mamba max pro esc.

redfisher1974

Yeah like we dont hear about the MMP esc going up in smoke lately.

ALL RIDER

I had the same problem with that system Novak said to send it in to be reprogrammed good luck

overrev

Any thing can go up in smoke,but I've seen more novak than anything else.

redfisher1974

Guess I'm one of the lucky ones with hundreds of runs on mine without a problem.

kaiser01

i just got the ballistic 8.5t, but i'm using a novak gtb esc.

geared 22/78 on my b4 i ran for almost an hour straight on the local track, 2s 5000mah 35c at the end the motor was 150 degrees.
< firm beliver that 3s is overkill.

my friend just picked uop the havoc 3s like the op did, i'll give him a heads up. hopefully he doesn't have this issue.