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-   -   Runtime? (https://www.rc-monster.com/forum/showthread.php?t=7074)

E-Maxx King 06.06.2007 01:07 PM

Runtime?
 
Well Im still debating on the setup cause I want the runtime still.

So a 4.5 hv-maxx
8xl with MM
9xl and mm
hv-maxx esc with a sensored 8xl

All oin 14 cells and 4200

I saw a video of a evo with the 9xl and it went pretty good. Go look at it in the revo fourm plz

So whats the fastest and what has the longest runtime? I drive at low speeds alot so thats why I like the sensored.

Serum 06.06.2007 01:18 PM

this would give you an impression;

http://www.rc-monster.com/forum/showthread.php?t=6423

E-Maxx King 06.06.2007 01:31 PM

Thx! But 10-20min. on the 4.5 yikes Thats What i get on the titains. Shouldnt it be more?

ClodMaxx 06.06.2007 02:33 PM

i know i was getting between 20-30 minutes with the 6.5. less amp draw = more runtime.

but...

maybe pick a system with the power you like first, accept that you won't have as much runtime with the IB's, and drop pennies in your piggy bank for a lipo fund?

E-Maxx King 06.06.2007 03:02 PM

WHat charger can charge two 12000 2 2s or a 2s and 3s? Cause thats what I would get If I had the money

E-Maxx King 06.06.2007 03:04 PM

Theres no video of any setups? Or these racing the titans?

BlackedOutREVO 06.06.2007 03:08 PM

Quote:

Originally Posted by E-Maxx King
WHat charger can charge two 12000 2 2s or a 2s and 3s? Cause thats what I would get If I had the money


ok 8000 mah is WAAAY more then enuff wieght, and run time lol

E-Maxx King 06.06.2007 04:30 PM

9000? On a 8xl what would I want? 5s

BlackedOutREVO 06.06.2007 04:39 PM

4s.... a mm cant run a 5s very well.....

and at 8000 mah thats more then enuff.... u would buy 2 2s packs... and then u wire them in series for voltage....even then thats WELL over 20 mins of wot, more id think

zeropointbug 06.06.2007 04:51 PM

with 8000's, you should get at least 30 min runtime. I get 15 - 20 min with my A123 4600mah (16.5v) pack running a 7XL on 18/51 gearing.

GorillaMaxx360 06.06.2007 05:14 PM

some here get 40minutes on these 8000s in there revos at race pace.

E-Maxx King 06.06.2007 06:02 PM

Well enuff(lol^) for me would be like 30 mins to what every. So If i gear the motor with a smaller pinion (more torqe) It wont run as hot correct? Longer runtimes but slowwer?

zeropointbug 06.06.2007 07:59 PM

Yes, more runtime, slower, more torque (although these motors have 3 times the torque you even need at any given time)

E-Maxx King 06.06.2007 08:03 PM

What about heat? Just on any motor.

zeropointbug 06.06.2007 08:15 PM

No, not necessarily... these motors have different efficiencies at varying torque and speeds. You have to gear them correctly, or else they get too hot.

To under geared, they spin at max rpm too much and that causes heat from too iron losses. Better motors such as LMT, and the Neu's don't suffer as much from this problem.

Too under geared, and they draw too much current (with a happy trigger finger), and will cause too much heat in the form of resistance losses, the more current you draw, exponentially more heat you generate.


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