Thread Tools
Sep 07, 2011, 10:21 AM
Thread OP
Anything that can generate around 5 lbs static thrust on a 10" prop should do although I do fly mine at half throttle except for verticals.
Sign up now
to remove ads between posts
Sep 07, 2011, 10:23 AM
Thread OP
What is the most popular prop slot foamie? I still have a half sheet of R-Tech and 5mm plywood looking for a project.
Sep 07, 2011, 12:44 PM
Registered User
F-22 seems like another popular design or a Mig-29. I am currently resizing and tweaking some F-18 super hornet plans. Thanks for sharing your plane. Hopefully we will see some other planes inspired by yours.

Just hoping my 3026-710kv will work. I know you used a slightly higher KV motor.
Sep 07, 2011, 01:11 PM
Retired CAD guy
birdofplay's Avatar
I hate advertising FOR the Chinese but ...

http://www.hobbyking.com/hobbyking/s...ter_Motor.html

I also have a couple of Big motor that fly my GP Cherokee
and another on an Electric powered Aero Tow Tug, which should work.

I have recently had a loss of my original old old old Tomhe F22.
Wear, tear, lots of extra glue hear and there and a bit too much of ... "Watch This !"

I am going to take a look at doing it in 9mm depron with a BOTTOM Treatment
like Otto has done to the F-15.

Is anyone still waiting for better plans ?

Or, have all the true scratch builders already headed for the Bench ?

L8r

bob
Last edited by birdofplay; Sep 10, 2011 at 10:17 AM.
Sep 07, 2011, 03:50 PM
low tech high tech
vtdiy's Avatar
deleted
Last edited by vtdiy; Sep 07, 2011 at 08:35 PM. Reason: error in kV -- thought it was 1600 -- it is 990
Sep 07, 2011, 06:12 PM
Retired CAD guy
birdofplay's Avatar
IN post #5 Otto said "Power system is a Scorpion 3026-990"

I assumed that the 990 was 990 KV and I think that motor is ~ 1000watts
But I cant find the 990 ver. only an 890 version.

Those motors are over 1025W so, what am I missing ?

3 blade might be a consideration too.
I use 3 blade props on my GP Cherokee and Tug, mentioned in the other post.

I have an SK 3542-1000 that has never been used.
Specs then say 600 watts.

I might try something a bit smaller to put this on but STILL a Slide On Ground thang !

At 4 lbs that is 150 watts per lb which should be enough for good performance.

Maybe I can build it even lighter.
Last edited by birdofplay; Sep 07, 2011 at 06:25 PM.
Sep 07, 2011, 06:52 PM
low tech high tech
vtdiy's Avatar
My mistake, I did a Google search for HK-3026-990 and it brought up the HK-3026-1600 as the first entry. I didn't double check against the original search.

That's a 1600kV version I see now.
Sep 07, 2011, 07:44 PM
low tech high tech
vtdiy's Avatar
Otto said a 60 amp ESC and 4S and 990 kV, so maybe this one is close?

http://www.hobbyking.com/hobbyking/s...dproduct=17921
Sep 07, 2011, 08:00 PM
Registered User
Windrider53's Avatar
I found this one: http://www.hobbyking.com/hobbyking/s...dProduct=14729
Sep 07, 2011, 08:37 PM
low tech high tech
vtdiy's Avatar
Windrider, sorry to cause confusion --- we are not looking for a 1600 kV motor.

990 kV is correct.
Sep 07, 2011, 11:47 PM
Thread OP
I just looked at Scorpion Calc and a APC E 10x10 should give you 71 oz of static thrust and a pitch speed of 91 mph, peak draw 48 amps. Vertically I got you but you'd have me in level flt. If you can find a 10x8 3 blade you can up the thrust to 85 oz, pitch speed 73 mph wiith little change in amps.
Sep 07, 2011, 11:49 PM
Thread OP
Quote:
Originally Posted by Otto Dieffenbach
I just looked at Scorpion Calc and a APC E 10x10 should give you 71 oz of static thrust and a pitch speed of 91 mph, peak draw 48 amps. Vertically I got you but you'd have me in level flt. If you can find a 10x8 3 blade you can up the thrust to 85 oz, pitch speed 73 mph wiith little change in amps.
Above was for pylot2b, assumes 4s battery
Sep 08, 2011, 03:57 AM
Registered User
Quote:
Originally Posted by Otto Dieffenbach
Above was for pylot2b, assumes 4s battery
Thanks for the info. I was playing around with scorpion calc myself the other day. Looks like a 3-blade 10x8 would be the ticket. Gonna be running a 4s 4000 mah pack either way.

Gonna start construction this weekend.
Sep 08, 2011, 10:43 AM
Registered User
Quote:
Originally Posted by birdofplay
IN post #5 Otto said "Power system is a Scorpion 3026-990"

I assumed that the 990 was 990 KV and I think that motor is ~ 1000watts
But I cant find the 990 ver. only an 890 version.

Those motors are over 1025W so, what am I missing ?

3 blade might be a consideration too.
I use 3 blade props on my GP Cherokee and Tug, mentioned in the other post.

I have an SK 3542-1000 that has never been used.
Specs then say 600 watts.

I might try something a bit smaller to put this on but STILL a Slide On Ground thang !

At 4 lbs that is 150 watts per lb which should be enough for good performance.

Maybe I can build it even lighter.
speaking as a total scratchbuilt newb, I would like them, but I am only one person. I am still trying to finish up my SR-71. LOVE this plane though. especially how big it is and materials used!
Sep 09, 2011, 01:26 PM
Registered User
Anyone found any foam alternatives? Home depot is out of the foam in my area that the origional was built from. My choices are Dow 1/2" blue foam from lowes and Owens Corning 1/2" pink foam from home depot. They are both denser and probably a little heavier the the other stuff.


Quick Reply
Message:

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold $250 in Home Depot Gift Cards...$220 Shipped! bighank13 Non R/C Items (FS/W) 1 Aug 17, 2011 08:17 PM
Discussion Aerial GoPro HD over Campbell River Home Depot clipper99 Aerial Photography 18 Apr 29, 2011 01:12 AM
Question 1/2" pink "Foamular" @ home depot 9XTremist Foamies (Scratchbuilt) 0 Apr 27, 2011 04:10 AM
Discussion i want to go out and build a foamie plane tomorrow. can i goto home depot, an art sup captaingeek Foamies (Scratchbuilt) 11 Jul 09, 2009 04:48 PM
Giant Pink Plane courtesy of Home Depot HIGHFLYER99 Foamies (Kits) 3 Apr 14, 2004 10:11 AM