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Electric conversion

Old 01-12-2009, 09:05 AM
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Default Electric conversion

Has anyone converted a T-Rex 700 to Electric, and if so is it worthwhile doing expense wise?

I would love to build a 90 size electric, preferable Align or Raptor.

I know someone out there has made a conversion kit for the 700, just would like to know the details
and expenses.

Thank you for your time.

Andrew60
Old 01-12-2009, 11:46 AM
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Default RE: Electric conversion

Imo, the $$$$$$$$$$$$$$$ of the batteries would give me hesitation. Matter of fact a LOT of hesitation.
Gary
Old 01-12-2009, 01:04 PM
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Default RE: Electric conversion

GrandRC had a combo awhile ago, that had the heli, motor, ESC, and electric frame parts, but I can't find it on their website. You could call them and see if they still do the combo. Here is the frame parts to convert to electric. http://www.grandrc.com/inc/sdetail/163598

There are a few videos on youtube of electric 700's.
Old 01-12-2009, 02:37 PM
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Default RE: Electric conversion

The only one I've seen built and flown was this one [link=http://www.heli-chris.de/product_info.php?products_id=1645]700 conversion kit[/link].
Loads of options and prices.


Hope it helps
Old 01-12-2009, 06:43 PM
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Default RE: Electric conversion

Yup
They are out there. I saw Bert Kammerer Align pro pilot fly one at a Fun Fly in Manfield MA. Except for the lack of noise lol, it flew as good as the nitro version.
Not sure what he used for a motor, but used 2 8s batteries. One mounted forward & one aft.
I'll look through my photos from this fall If I can find one I'll e-mail it to you
JRod
Old 01-12-2009, 07:25 PM
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Default RE: Electric conversion

If I had the money an electric T-Rex 700 would be my next heli! The major thing holding me back are the 12S lipos. I just can't stomach using $500 worth of batteries and only getting 4-5 minutes of flight time. I guess I will just have to enjoy my 8S powered T-Rex 600 until I can afford a 12S powered 700. I think you are looking at approximately $900 for a motor, esc, and one set of 6S packs for one 12S flight pack.

There are quite a few guys have successfully completed the conversion. It looks like many are using dual 6S 5000mah lipos wired in series to get 12S or 44.4v. The motor I see being used the most is the Scorpion HK-4035 -560 in combination with a Castle Creations Phoenix HV-85 or HV110 esc.

Here are some links to threads on how people did it.

http://www.helifreak.com/showthread.php?t=90897

http://www.helifreak.com/showthread.php?t=113403

http://www.runryder.com/helicopter/t473471p1/

http://www.runryder.com/helicopter/t442413p1/

http://www.runryder.com/helicopter/t476396p1/

That should keep you busy for a while.

Brandon
Old 01-12-2009, 10:41 PM
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Default RE: Electric conversion

Thanks a lot guys, that is a load of info.

I will have to look at pricing, the batteries got to get better as well as time goes along.
I would really like a 90 size electric Heli at some point.

And Align is my favorite, unless anyone else know better.

My Email address is : [email protected]

Thanks again.

Andrew60
Old 01-13-2009, 08:45 AM
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Default RE: Electric conversion

I've flown one, its nuts. 90s have a lot of power but this thing was crazy.

http://www.rremodels.com/media/fbh700e.wmv

There's some video I shot of a flybarless one

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