Ultimate Biplane: RCM&E Magazine Free Plan in Dec 2009

15 04 2011

December 2009 free plan feature in RCM&E magazine (www.modelflying.co.uk ). Constructed from 9mm EPP foam and powered by a 600w brushless motor. Specs are 39″ span , 47″ long and 1.4kgs weight Details at http://www.modelflying.co.uk/albu/member_album.asp?a=8081
Video Rating: 5 / 5

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16 responses

15 04 2011
vanepico

Uh-oh i don’t thin ki will be able to resist! help me!!!

15 04 2011
Aerovids

It should be great on 6s. You’ll be drawing around 40amps WOT so your 2500’s will be fine as if theyre rated around 20c or over.

I tend to limit flights to around 7 or 8 minutes
3700mah’s, 5 or 6 mins 2500’s. Just monitor your batts after landing

If you have the carbon joined in the middle of the wing make sure you add a long section overlapping the join . Mine uses 6mm x 3mm D section leading and trailing edge running full span (no join) and seems to work fine (so far !!)

15 04 2011
bstarr119065

Oh yes I already have my power system, good thing I wen’t big. I bought the Welgard 4120-07 brushless which puts out a continuos wattage of 800 watts and a maximum of 1kw. I also bought two 2500 mah 3 cells that i am going to hook up in a series for a 6 cell battery.

Do you know your flying time? Any approx. on my flight time?

I have already carbon reinforced the two wings with one 40″ (5mm diameter) rod each. Do you think that is enough or should a add more before closing up to wings?

15 04 2011
Aerovids

Sounds like it should be great .

Only tips I can think of is use good quality carbon for the strengthening, especially for the wings. At 60in span you might have to use carbon x bracing (flying wires) to reduce wing flex as you’ll probably end up weighing over 3kg if not more.

A bigger Ultimate will have lots of drag so you’ll need around 1kw so I guess you’ll be using 4 cells or above ??. Any idea on your setup yet ??

15 04 2011
bstarr119065

I am building an Ultimate with the same foam with a 60 in wingspan and 66 in fuse length. Great build! Any tips or tricks?

15 04 2011
Aerovids

Many Thanks,

If you mean still pics Ive just added a link in the info box

15 04 2011
nistrum23

its a fantastic model 🙂 do you have any stills?

15 04 2011
Aerovids

Depends on the make of the equipment but roughly
Motor £20-60
Esc £30-£60
RX £10-50
Servos (x4) £10-£30 each)
Battery £20-£70
Prop, spinner , u/c ,foam , carbon, canopy , horns, pushrods etc around £30-£80

Hope this helps

15 04 2011
nistrum23

how much will the whole thing cost roughly.. servos and all?

15 04 2011
Aerovids

Cheers mate !!

15 04 2011
Smokinfiddler

Dave
Cant wait for those plans to hit the news stands
this Bipe is a beaut!
CYA At RCG

15 04 2011
Aerovids

PM Sent 🙂

15 04 2011
350paul

Nice model 🙂 Any suggestions as to where to get 9mm EPP from in the UK? Having trouble finding the stuff…

15 04 2011
Aerovids

Hi, I havnt got an exact publiction date yet I’m afraid but ill update as soon as I get any details. Dont worry youve not missed it so just buy lots of 9mm EPP foam and get saving for those servos !!

15 04 2011
rckidcam1994

great plane
what issue is it in ??

15 04 2011
tallguysd

Great Looking plane Cant wait!




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