My old skool zeph 54, covered in rite weave ( took almost 2 cans of 90) does about 100 MPH on 1400 watts, they ain't designed to go fast - I think most of the power goes into noise

Originally Posted by matwelli

My old skool zeph 54, covered in rite weave ( took almost 2 cans of 90) does about 100 MPH on 1400 watts, they ain't designed to go fast - I think most of the power goes into noise

My demon makes LOTS of that wonderful noise. I am still hoping CK comes out with a Demon V2 based on the new foam. If the new one lost some weight and I used my same 2400 watt power system it should be screaming fast.

looking a t the wreckage today i think i needed more thought put into the main spar. more gorilla with less water and sandpaper the spar first.

and riteweave would have been good too, but you can't use 90 on this foam. would have to just be gorilla

could you get away with 3M77 or ados F2 ?

my zephy has twin 6mm main spars, and each wing has a 6mm tube as well

yep my ZII has 2x 6mm spars , i just needed to use more gorilla. and ritweave...... or just be nicer to the poor airframe not trying to huck it about with 2000w at the same time

The new foam can't take 90?!
uh oh.

One possibility if you did want to weave it would be water-based contact cement. Same type of stuff used on counter top laminate and flooring, but without the nasty dissolvy stuff.
You could just brush it on instead of spraying, then use the spreader card to smash the weave and smooth it.

Or tack it down with Elmer's water-based spray adhesive. Then give it CK's "extra love" treatment with PU glue that's continuously wiped and smoothed till it cures.

i think i am more suited to a demon

but life just got real busy i wont have time to fly for a fair while

and just this morning my big heatsink and sport props arrived...... grrrrr

It always takes twice as long as you think it should doing those last few jobs!

Ready to maiden this week with Mega 16/40/1.5SC on 6 cell 5000's gives a RTF weight of 2.03kg including the 3 oz of lead I installed to give me a conservative CG.

I was pretty pleased with myself as my first Demon with the same motor weighed 2.17kg and that was with smaller 4000 batteries!

With a 6.5x5 APC Pylon prop this will draw, straight and level, just over 100amps or about 2160 watt so I will only be able to do short WOT bursts.

I can always subsitute a 4 cell 4000 for one of the 3 cell 5000's to run it on 7 cells and a 6x4 on a slightly higher kV motor for laughs too but the intention is to run 8 cell 4000's most of the time with another lower kV motor.

great job peter, it looks awesome.

make sure we get some video!

Thanks Ambrose!

Have you ordered your Demon yet?

Video? Lets see how we go first!

Peter,
I think that ESC will be just fine, its the motor I am worried about.
That nice MEGA sticker insulates the can from dissipating heat.
Do you have room for a heatsink between the 2 motor clamps ?

Is it just laminated ?
Did you use Riteweave ?
How many and what size spars ?

Hi Mopar,

The intention is not to push this motor and just to get it flying so I haven't worried about a heatsink at this stage. There is room for a heatsink between the mounts - I just have to cut one to lenght. 'Spose I could alway fit one tonight (and pull the sticker off as well!). Thanks Mopar, better safe than sorry I guess!

It is a traditional build consisting of main spar, surface spars, riteweave, 90 and laminate. I have also installed a top surface cf spar to compensate for the loss of the use of corflute for the hatch covers: http://www.rcgroups.com/forums/showp...ostcount=11297

The weight loss over my last one has been mainly the minisation of the need to add lead and very thin paint!

Regards
Peter

Clique,

How many runs did you get with the Mega 16/40/1.5rc on 6S with the 6.5x6.5 prop? Did you get any numbers from the flight(s) watts, amps...


I saw this on a video for m SEFF. I believe it was strapped onto a Demon.


Trying to get some max figure for the motor. I currently fly it on 4S with a
7x6 gas prop.

Originally Posted by johnnyrocco123

Clique,

How many runs did you get with the Mega 16/40/1.5rc on 6S with the 6.5x6.5 prop?

Where did you get 6.5X6.5 on 6S?

Put up a link!



Gryphon

Johnny,
What plane is it for this time?

Hotliner?
Pylon racer?
3D with a gearbox?
Helicopter?
Drag race car?

You might have better luck getting advice in the threads for the plane you're looking to run.

Try 8x8 on 6S.