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Old 07-12-2007, 10:24 PM   #2401
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Originally Posted by Peter_PaP View Post
Hey guys something just happend when i turned on my rc.

I seen sparks and some smoke from the GTB and the car was acting erratic so i immediately disconnected the battery. The GTB was a bit warm as well as the battery and some wires, battery just came off charge.

I have a Spectrum GTB Novak 4.5R and a Team Orion 4800Lipo.
Its only been run like 3 times.

Any help is appreciated.
Don't worry. Your not alone! There were two locally that went the same weekend. Both only ran like two times. I have a great pic of mine smoking. Most smoke we have seen from a RC car at the track yet. Novak will remedy the issue with yours and you will be good to go. On a good note. The two Novak's only smoked, but the Tekin G-11 actually caught fire!!

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Old 07-13-2007, 01:25 AM   #2402
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do all GTB spread spectrum ESC have Lipo Cut off?

or i have to make sure with the hobby shop that the Spread Spetrum Esc comes with Lipo cutoff
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Old 07-13-2007, 02:59 AM   #2403
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do all GTB spread spectrum ESC have Lipo Cut off?

or i have to make sure with the hobby shop that the Spread Spetrum Esc comes with Lipo cutoff
All of the latest GTB's come with lipo cutoff (SS and Crystal GTB's).
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Old 07-13-2007, 03:18 AM   #2404
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i know but i am buying from tower, and who knows what stock they have
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Old 07-13-2007, 10:11 AM   #2405
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i know but i am buying from tower, and who knows what stock they have

The Lipo cutoff units have a silver sticker on the outside of the box that states that the GTB has the Lipo Cutoff. You may try and call your order in. Ask if it has the cutoff.
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Old 07-13-2007, 10:20 AM   #2406
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do all GTB spread spectrum ESC have Lipo Cut off?

or i have to make sure with the hobby shop that the Spread Spetrum Esc comes with Lipo cutoff
The GTB SS version was designed and shipped with the lipo cut-off circuitry only.
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Old 07-13-2007, 08:29 PM   #2407
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Jeff and Mike talking brushless on the couch. Check out the new segment on http://www.rctvlive.com called 'after hours'. Enjoy!
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Old 07-13-2007, 10:52 PM   #2408
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Huh. Combining stock and 13.5 in onroad at the 'birds would be neat, but would probably cause riots in the streets.
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Old 07-13-2007, 11:48 PM   #2409
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Originally Posted by swopemike View Post
I would recommend the warranty form, as the formal warranty is 120 days. Make sure you fill it out completely.

However I notice you're in Australia. I think you may deal through a more local distributor. Try email to [email protected] or [email protected]. Although they always respond, they've had trouble with their email filters... If you don't hear back in a day or the email bounces, try posting again here. Meanwhile I expect Steve or Charlie will post here where to send it.

Turnaround is about a week, plus shipping on each end.

Novak has fantastic customer support. They are definitely excellent to work with when you have a problem.
I think i send it to these guys. HOBBY EXPRESS IMPORTERS http://www.teamnovak.com/disti/dist_intl.htm (scroll down)


Quote:
Originally Posted by Racer4Life View Post
Don't worry. Your not alone! There were two locally that went the same weekend. Both only ran like two times. I have a great pic of mine smoking. Most smoke we have seen from a RC car at the track yet. Novak will remedy the issue with yours and you will be good to go. On a good note. The two Novak's only smoked, but the Tekin G-11 actually caught fire!!

Tom
Wow thats odd. Post that pic!

Last edited by Peter_PaP; 07-14-2007 at 07:27 AM.
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Old 07-14-2007, 02:26 AM   #2410
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Righty Ho got me Spek GTB
qick question
can i run the GM EVO3 ,nosram Storm, lrp X11, orion Vortex BL motors with this speedo ???
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Old 07-14-2007, 11:56 AM   #2411
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Looking into getting a 3.5 brushless system for my dragster, anyone have some feedback on the speed of it?
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Old 07-14-2007, 01:27 PM   #2412
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Righty Ho got me Spek GTB
qick question
can i run the GM EVO3 ,nosram Storm, lrp X11, orion Vortex BL motors with this speedo ???
I do believe you can Mr jolly!
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Old 07-14-2007, 06:35 PM   #2413
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Default GTB + 4.5R thermal shutdown

Hi, I'm running a Losi JRX-S (1.83 IR), GTB with a 4.5R motor. My problem is thermal shutdown.

Here's what I noticed in different runs:

GTB + 4.5R with non-sintered rotor
used FDR of 10.2 - thermal shutdown after 5 minutes and 1 lap (23 secs)
used FDR of 9.76 - thermal shutdown, did not finish the 5 mins. heat

GTB + 4.5R with sintered rotor
used FDR of 10.2 - thermal shutdown after 5 minutes + 2 lap
used FDR of 9.76 - thermal shutdown after 5 minutes + 1 lap
used FDR of 9.37 - did not continue feeling I might be overgeared as it seems acceleration is mushy and car slowed down after 2-3 laps
temperature measurement ranged for the motor from 68-81 degC after shutdown, ESC is about 48-55degC (measured after each test run)

Am I undergeared with the above set-up? Also with the sintered rotor, I notice sometimes there is a point after braking, the motor wont run (cogged?).

Does undergearing could also cause the brushless system to overheat?

One more thing, I think my radio is set to 50/50 electronic thown and not the 70/30 recommended, will this have anything to do with the overheating/shutdowns???

Many thanks to all for the help. Regards..

Ludwig
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Old 07-14-2007, 10:49 PM   #2414
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Originally Posted by surrealmaterial View Post
just a few questions guys:

1: at what temp does the ss13.5 thermal using a gtb?
2: can i thermal my motor a few times (i.e. 8-10 times) without doing any damage?

Cheers
anyone??
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Old 07-15-2007, 03:21 AM   #2415
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Originally Posted by surrealmaterial View Post
anyone??
the 13.5 without sintered rotor will thermal at approx 200 F

Everytime you thermal the motor the rotor gets weaker and will thermal again at a reduced tempreture (for example 190F)

so try to be cautious or better yet get a sintered rotor if the track does not allow that, then be cautious and ask your fellow club members what ratio they are using.
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