Need help deciding a design question, twins or single EDF - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-23-2006, 01:43 PM   #1
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Need help deciding a design question, twins or single EDF

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Hi Guys,

I'm designing a couple of model kits that I would like to get onto the market in 2007. I'm putting the question out to you for your input to influence my design efforts.
If you had a choice in purchasing a jet, IE: FA-18 or F-15, would you prefer a model setup for two smaller EDF units or would you favour a single EDF setup, which would be larger of course to produce simular performance with less weight and overall cost.

The twin setup will obviously entail two fans, two motors, two ESC's, possibly two Lipo battery packs for duration purposes of one single high drain pack but it'll have less flight duration.

Or, a larger single EDF unit, one motor, one ESC and one Lipo pack. Overall, less weight, less complicate, less cost.

I have been contacted a few times about the F-18 and most seem to enquire about a twin 90 mm EDF setup. I was leaning towards a single 120 mm setup for the F-18, less weight and cost.

However, I'm open to suggestions, perhaps both setups are marketable, however, I would at least like to get the most popular setup designed first.

You can reply here, or e-mail me directly at

Thanks for your help.

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Old 12-29-2006, 01:30 PM   #2
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I fly out of the Humber Valley rc club. I have been flying my Alfa Mig 15 this year with the Himax 2025 5300 and a TP 3s 2100. The EDF is an Alfa gen2. Lots of fun, and she clocks in at 82mph. Another club member and myself would be very interested in your kits. My preference would be towards the single larger EDF setup. Please send me some info and photos of your kits at or contact me at (416)831-4765.

Thanks and have a great New Year
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Old 01-01-2007, 10:20 PM   #3
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Hi John ; I am not into electric [ I bought your glow f-86] ;but I would

think going with the KISS principle would be the best way to go.

If it is cheaper than that is even better.

I do not see an advantage to having two electric fans over one electric fan. That is providing they are of equal thrust ratings.

My two cents.
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