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Old Aug 12, 2011, 10:35 AM
J40
Airplanus Erectus
Fairfield,Pa.
Joined Feb 2002
77 Posts
Question
Help with motor?

I have an old Wattage Cap 232EP that had the Cobalt 400DD. Was always a sled. Set on it along time now. I have sitting around:

1. Eonxlite 11.1vdc 3S 25C 1300mah. lipo.
2. Supertiger 30A BL esc for lipo.
3. Want to use APC 7 X 4 props due to ground clearance (and looks good)
4. approx 28oz. all up weight.

Any Tower Hobbies in runners work for this?
Any recommended in runners?

Thanks for any help!
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Old Aug 12, 2011, 11:01 AM
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Dr Kiwi's Avatar
Chattanooga, Tennessee, United States
Joined May 2003
27,197 Posts
Finding an inrunner with low enough Kv to spin a 7x4 on 3s will be hard. If you intend to use it geared then life gets easier.

Something like this might do the trick (once they are back in stock!): http://www.hobbyking.com/hobbyking/s..._Inrunner.html [one review says about 30A/350W with a 7x4]
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Last edited by Dr Kiwi; Aug 12, 2011 at 11:14 AM.
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Old Aug 12, 2011, 12:16 PM
J40
Airplanus Erectus
Fairfield,Pa.
Joined Feb 2002
77 Posts
Thanks Doc. Firewall is set up for the original can motor and mount method is light. Will be plug and play if I can find the right one. Out of stock.
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Old Aug 15, 2011, 08:58 AM
J40
Airplanus Erectus
Fairfield,Pa.
Joined Feb 2002
77 Posts
Anyone else have a suggestion?
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Old Aug 15, 2011, 04:13 PM
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Dr Kiwi's Avatar
Chattanooga, Tennessee, United States
Joined May 2003
27,197 Posts
ARC 28-47-3 (~1460Kv)... draws 20.30A/235W with a 7x5 APC E on 3s. (31oz @ 64mph). With a 7x4 APC Sport it draws 15.70A and gets you ~28oz @ 55mph.

www.lightflightrc.com
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Old Aug 16, 2011, 10:41 AM
J40
Airplanus Erectus
Fairfield,Pa.
Joined Feb 2002
77 Posts
Hey Doc, that looks nice. Thanks.
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