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Old Feb 15, 2013, 05:51 PM
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Australia, QLD, Burua
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Originally Posted by Throttlejunkie View Post
Race face
, I don't think I'd want to race him Chris haha .
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Old Feb 15, 2013, 05:59 PM
RC Dirt Bike Action
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California central coast
Joined Feb 2010
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@TopDave, cool you got it.

Quote:
Originally Posted by Throttlejunkie View Post
Race face
LOL, ummm that dude is scary looking. Something tells me I might get punted off the backside of the berm when he is around haha. Btw, great tactic to psych out the competition!
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Old Feb 15, 2013, 06:54 PM
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This is how I've done it with the wiring coming out under the ESC.
http://www.rcgroups.com/forums/newat...anageattach&p=
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Old Feb 15, 2013, 09:30 PM
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Did a forward facing run for those interested.
Atomik MM450 go pro on board forward facing (1 min 47 sec)
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Old Feb 15, 2013, 09:56 PM
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A couple of pics.
http://www.rcgroups.com/forums/newat...anageattach&p=
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Old Feb 15, 2013, 09:57 PM
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http://www.rcgroups.com/forums/newat...anageattach&p=
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Old Feb 15, 2013, 10:26 PM
RC Dirt Bike Action
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California central coast
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Those still photos look amazing how it gets all the details. Technology is getting better for the fpv (first person view) video style. Still too shaky for my personal taste, but video quality is sweet. I think with certain video software that video can be smoothed out even more as Ive seen videos with it at least.
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Old Feb 15, 2013, 10:53 PM
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Those still photos look amazing how it gets all the details. Technology is getting better for the fpv (first person view) video style. Still too shaky for my personal taste, but video quality is sweet. I think with certain video software that video can be smoothed out even more as Ive seen videos with it at least.
That's still std def too John. When I see it in HD its pretty dam good even with a few shakes. You have to remember the track is anything but smooth haha. I'll load some up in a week or so and see what you think. In the meantime here's the latest run today.
Atomik MM450 go pro forward on board (3 min 4 sec)
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Old Feb 16, 2013, 01:06 AM
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One thing about the front facing on board is you can see exactly what's going on with the steering at any time. Might help some people out?
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Old Feb 16, 2013, 05:18 AM
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Puerto Rico, Guayama, Guayama
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Originally Posted by TopDave View Post
Wonder how much runtime a ~4000 pack gives.

I'm betting you'll get 15 minutes unless you're running in sand. Mine would run 18+ minutes on carpet on my mini track in the basement.

PS Thanks for the bearing receipt John!
I'm impressed you're getting that much run-time. I'm getting about 6 minutes with the stock 3200 batt ending at 3.75V per cell. I bought a 5000 one and I'm getting about 10 minutes. I run on bitumen constantly throttling and braking though.

David
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Old Feb 16, 2013, 05:24 AM
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Originally Posted by TopDave View Post
Should be easy to fit the wires JMc. Take the male battery plugs and file / grind the wire soldering cup off the top of the plug leaving the bottom of the cup to solder to. Solder the wires perpendicular to the plug so the wires are parallel with the length of the battery and cut the wires to the required lengths.....Done! The balance tap should work the same altho' I have talked to many experienced racers and they never bother to balance 2 cell packs,...... but follow your own methods for that for peace of mind. You can feel the lower CG with the short packs for sure.
IMHO, I wouldn't recommend charging a lipo in a non balance mode. It takes only one incident to regret they weren't doing it before.

David
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Old Feb 16, 2013, 05:54 AM
MY '75 CZ "FALTA REPLICA" 2010
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Waterford, Michigan
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Originally Posted by davehour View Post
IMHO, I wouldn't recommend charging a lipo in a non balance mode. It takes only one incident to regret they weren't doing it before.

David
Thanks for your concerns davehour, but I've personally seen no fires at a race since we have gone to LiPo batts, but many fires in the pits when we were still using NIMH batts. That's why I always use the disclaimer "to charge with the way you are comfortable''. I always balance charge my 3,4,and 6 cell Heli and aircraft batteries.
Prolly was a bad idea to offer the "no balance option" of the 2 cell packs,cause some people may misunderstand and not balance any of the multi-cell packs, which could lead to a fire. After thinking about it I will delete that sentence from my post!
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Old Feb 16, 2013, 06:02 AM
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Originally Posted by davehour View Post
I'm impressed you're getting that much run-time. I'm getting about 6 minutes with the stock 3200 batt ending at 3.75V per cell. I bought a 5000 one and I'm getting about 10 minutes. I run on bitumen constantly throttling and braking though.

David
That sounds about right David, on my dirt track I get about 8 minutes with the std 3200 battery and maybe 12 minutes with a 5200.
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Old Feb 16, 2013, 06:07 AM
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why do you think charging a 2 s pack is any different from a multi s pack .Because you have witnessed people getting away with a bad practice does not make it a good one. the odd part is when I used to race with nicd's the lengths people went to to monitor there pack condition. The only difference I can see is a high voltage cell has fewer cells to disguise it but a low cell could easily send another over volt.
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Old Feb 16, 2013, 06:31 AM
MY '75 CZ "FALTA REPLICA" 2010
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Waterford, Michigan
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Quote:
Originally Posted by davehour View Post
I'm impressed you're getting that much run-time. I'm getting about 6 minutes with the stock 3200 batt ending at 3.75V per cell. I bought a 5000 one and I'm getting about 10 minutes. I run on bitumen constantly throttling and braking though.

David
I think what part of the reason that I'm getting such good runtimes is that I always run on very tight ''closed courses" and am forced to use throttle control to keep the bike pointed in the right direction. I can only pull the throttle wide open occasionally even on the straights and even then I have to ''roll the throttle" on to keep things under control. I forget sometimes, that most guys that own these bikes only use them to jump, roost and wheelie and do high speed runs, which all require a lot of throttle that uses up the battery very quickly. By comparison, my 1/5th scale Thunder Tiger Pro road racer will run 25 minutes + on a closed course track on bitumen at speed, with a 5000 mah battery. The only reason I pull off then is that I'm worried that my ESCs low voltage cutoff isn't working, lol.
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