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Old 08-21-2008, 03:49 PM   #16
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Don't drag your feet too long, those Chinese are relentless.

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Old 08-21-2008, 04:07 PM   #17
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Don't drag your feet too long, those Chinese are relentless.

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If Novak closes up shop, will the Chinese clone makers go out of business?
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Old 08-21-2008, 04:11 PM   #18
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If Novak closes up shop, will the Chinese clone makers go out of business?
Is that a mongoose clone?
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Old 08-21-2008, 04:22 PM   #19
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NovakTwo,

I'm considering it (are there any re-furbed avail) Hate to destroy a NEW one...

I'm looking at a couple "Spec" classes..and the price range of the Mongoose might be a perfect fit.

ORION 2400 LIPO
NoVAK Mongoose
NoVak 21.5

hmmmm

C.O.T. Oval Spec.
200 mm On-Road Spec.
and even the new Vint. Trans. Am. might ALL work well on this type of setup.
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Old 08-21-2008, 05:23 PM   #20
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Yes you can use the mongoose with a 17.5 bl motor people do it and they its the same as having a normal speedo they say it doesn't get hot and gives the same amount of power. thesecond to last page in the 1/12th scale thread has a guy who has done it. A pro about it is that its 15 grams lighter.
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Old 08-21-2008, 07:05 PM   #21
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Yes you can use the mongoose with a 17.5 bl motor people do it and they its the same as having a normal speedo they say it doesn't get hot and gives the same amount of power. thesecond to last page in the 1/12th scale thread has a guy who has done it. A pro about it is that its 15 grams lighter.
I have a 17.5, a mongoose, a 21.5 and a 2 cell lipo that I will be putting through thier paces this week and next. I have seen this work with a 17.5 from Timmay .. . I will update y'all asap.
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Old 08-21-2008, 07:28 PM   #22
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Quote:
Originally Posted by timmay70 View Post
Is that a mongoose clone?
sure doesn't look like it to me . . .
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Old 08-21-2008, 10:11 PM   #23
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http://www.youtube.com/watch?v=Q-1Cw...eature=related

here is the video Charlie was talking about.

I too am curious about this combo... VTA applications? maybe?
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Old 08-22-2008, 08:01 PM   #24
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I once tried a Mamba 25 hooked to a Feigao 380C 13T in a FWD touring car. It worked fine-no unusual heat issues or smoke. Granted this is not Novak, but I think the comparison is appropriate. The Mongoose is rated higher than the Mamba 25 and has a heat sink. Don
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Old 08-22-2008, 10:15 PM   #25
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How do you guys think the 1 cell lipo idea will work with this unit? I do that you will need to shut off the lipo cut off but I think this will work great for 1/12th 1 cell lipo/ (7.5)brushless class we are working on at our track.

I wounder if Novak can put a 1 cell lipo cut off in it. I will need to send them an e-mail.

Thanks for starting this thread it has given me miny things to think about.
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Old 08-22-2008, 10:56 PM   #26
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K-Spec

The combo I'm looking at is the 21.5 B/L motor, the Orion 2400 Lipo and the Mongoose ESC.

The 21.5's in 5 min. OVAL racing pull less than 15.5 average amps, the mongoose is rated for 40 amps.

We are only pulling 1300 - 1500 mAh in the 5 min. runs.

This combo trio can be bought MOTOR/ESC/BATTERY for roughly $200.00 NEW.

That wouldn't be a bad deal for a OVAL Spec class, and/or a Touring Spec class.

Orion 2400 lipo $35.00 +/-
Novak Mongoose $ $90.00 +/-
Novak 21.5 $75.00 +/-
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Old 08-22-2008, 11:04 PM   #27
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$200 for a full setup, you cant beat that. Any ideas on a spec chassis for the oval class?
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Old 08-22-2008, 11:18 PM   #28
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Not yet, but Wind Tunnel makes a Sportsman type oval chassis. Not sure if he ever finished getting it to market or not, but it looked like it had promise.

(I'd love to see a fiberglass version of a couple of the popular oval cars with just a single shock and a damper tube)
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Old 08-23-2008, 01:29 AM   #29
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Good news all!

I spent time evaluating several combinations of the following in a Rev 5 and am happy to report my findings . . .I thought about posting my fast and average laps and such with each combination, but the traction was so inconsistant that I didn't feel it would provide meaningful data. I was able to drive each combination enough to get a solid feel for the characterisitcs and test each under 8 minute racing conditions.

Mongoose ESC
4 cell NiMh
1800 mAH 25C 7.4v LiPo
Novak 21.5ss
Novak 17.5ss

First of all, for 12th scale stock, entry level, novice, or anything other than EXPERIENCED drivers, 2 cell lipo is WAY too fast. I ran it with a 21.5 geared like a 17.5 (76/40 READ: undergeared) and it felt like I had a 10.5 in it. Fast enough that I didn't even bother to try the 17.5 with it.

After reading several threads about the potential of LiPo in 12th scale, I initially leaned towards 2 cell because I thought it might simplify things. The weight would be closer, it wouldn't require a receiver pack, and before tonight, I thought a 21.5 would be slow enough for novice/stock classes.

Now I am all on board with the 1 cell idea. We need options that are slow enough for beginning drivers, and I believe it would be a challenge to create the motors to accomplish this. I know the 1 cell BEC/receiver issue will need to be resolved, but this seems less difficult than re-engineering motors.

So on to the results . . .

The 21.5 with a 4 cell NiMh and a GTB was surprisingly competitive with a 17.5 4 cell NiMh.

The Mongoose handled the 21.5 NiMh exactly like the GTB did. It was also 20 grams lighter and the smaller footprint allowed me to center my electronics MUCH better. The cap is also much smaller and the wire exits and orientation on the mongoose provided for a cleaner install than the GTB. Not to mention retail on a mongoose is SIGNIFICANTLY less than a GTB.

I kept the same gearing with all the tests (76/40) and the Mongoose barely warmed at all. Enough that I didn't need to temp it. The 21.5 never came off more than 110with the GTB or the Mongoose, and the 17.5 came off around 140 with the GTB.

I'll be able to test the Mongoose with the 21.5 again under actual race conditions in the coming weeks, as well as trying it with the 17.5. I just thought I would share my preliminary reuslts for any who care.

For right now I think 12th is in good hands with the EP and Ener-G NiMh cells. I am pretty content with it homestly. But if I can find a way to run LiPo efficiently, I'd love to have the option even if just for practice.

PS-As far as speed, value, and durability I think the 2400/Mongoose/21.5 combination would be great for an oval class. I definitely would want to try it in a 10th scale before I openly endorsed it, but after tonight, I can;t see why it wouldn't work
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Old 08-23-2008, 01:41 AM   #30
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Thanks Andrew,

and btw, we've found 21.5/LIPO in a oval car runs VERY VERY close to what a 13.5/4 cell runs (although we never ran too much w/ the 13.5/4 cell)

Our current main Oval classes are 21.5 and 17.5 LIPO on both, using the Orion 3200 (which has been discontinued)

I've been sitting here running my VELODROME car on chassis dyno hooked up with LIVE data from my eagle tree data logger to my computer.

The data I had from our last race was that the car pulled an average of 15.5 amps, and I've got my chassis dyno set up to pull a little bit harder load. (It's pulling really close to 20 amps at full throttle)

I haven't run the eagle tree system in the car @ race speeds yet (It's been sitting on my workbench for 2+ years) Once I do, I'll recalibrate the dyno to pull the same load as what ever track I want to set up to test for.

The live data with the car on the dyno is cool because you don't run out of time..since it's storing the data directly to the computer. When you are done, it also displays the Highest AMP draw and the LOWEST voltage drop under load.
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