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Old Jun 07, 2001, 10:15 AM
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geoff.sim's Avatar
Northamptonshire, UK
Joined Oct 2000
844 Posts
Twin Jet and Permax turbo 450 setup

Having trawled the Foamie forum, I cannot find anyone who is using two 450's on this model. Can anyone correct me? I just want to confirm some things like:

1. Motor leads. I intend to chuck the supplied ones and use 20A cable. Comments?

2. Props. I intend to use cheap cheap MAS 6x4's. Comments?

3. Batteries. I intend to use 9-cell 1700/2000 NiCd and 9-cell 3000NiMh cells. Comments?

4. Speed Controller. I would like thrust vectoring, so 2 35A controllers? Comments?

5. If not the above, then 50A controller? Comments?

6. I intend to relocate the controllers/receiver to the rear of the model. Comments?

Any previous experience with this setup would be helpful.

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Old Jun 07, 2001, 12:15 PM
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Mark Haigh's Avatar
Barnsley, Great Britain (UK)
Joined Dec 2000
668 Posts
Geoff, I have no experience with 450s in a TwinJet, but Ive fitted 2 in a TwinStar with 7x6 TopFlite wood props. Pulled approx. 50A off a freshly charged 8x2400 pack. Good rate of climb. Dropped the props to APC 6.5x3 (ish) climb rate wasn't noticeably reduced but duration was better. Hope this helps.
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Old Jun 07, 2001, 12:52 PM
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DaJudge's Avatar
Tyler, TX USA
Joined Jul 2000
1,406 Posts
I love the 450 in my Zagi.

I have refrained from putting these in my TJ due to the weight factor. I read a post some weeks ago about a guy who did put 450s in a TJ and later removed them due to weight and the increased stall speed that comes with that.
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Old Jun 08, 2001, 01:25 AM
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Joined Aug 1999
5,110 Posts
Pepsi Mike
Senior Member
Posts: 53
From:Reno Nev.
Registered: Jan 2001
posted 03-13-2001 12:54
Yes twin colbalts would be insanely fast in the twin jet. I put 450 turbo's in the TJ and it really moved but the extra wieght on the back of the wing was to much. But it was great for those 2 flights.
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