Espritmodel.com Telemetry Radio
Reply
Thread Tools
Old Sep 07, 2010, 12:55 AM
Addicted to building...
Freddie B's Avatar
Omaha Nebraska
Joined Feb 2006
5,992 Posts
Looks like it flys well enough, pretty fast too!

Fred
Freddie B is offline Find More Posts by Freddie B
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 07, 2010, 07:39 PM
Registered User
Joined Aug 2008
567 Posts
Thanks! How would I go around slowing it down? I want it teach some of my friends to fly using it in our gym, but it is too fast for that. Do I need to put on a different prop or add some airfoil? Thanks.
helidude22 is offline Find More Posts by helidude22
Reply With Quote
Old Sep 07, 2010, 08:08 PM
2^p - 1
signflyer's Avatar
United States, MO, Springfield
Joined Feb 2003
1,326 Posts
Nice looking build! To get slower speeds, some undercamber will help (to the detriment of flying in a breeze). Other than that, more wing area and / or less weight would also slow it down.
signflyer is offline Find More Posts by signflyer
Reply With Quote
Old Sep 08, 2010, 03:32 AM
No, I dont work for HH ;)
Bowerz's Avatar
Southampton, Hampshire, UK
Joined Sep 2009
3,707 Posts
throttle control?
Bowerz is offline Find More Posts by Bowerz
Reply With Quote
Old Sep 08, 2010, 05:43 PM
Addicted to building...
Freddie B's Avatar
Omaha Nebraska
Joined Feb 2006
5,992 Posts
Agree with signflyer, undercamber will help a lot. By the looks of the video, I think it could handle larger surface areas as well, no problem climbing now!

Good luck

Fred
Freddie B is offline Find More Posts by Freddie B
Reply With Quote
Old Sep 09, 2010, 11:30 AM
Registered User
Joined Aug 2008
567 Posts
So the under-camber is the airfoil? Sorry for being a newb.
helidude22 is offline Find More Posts by helidude22
Reply With Quote
Old Sep 09, 2010, 11:38 AM
Addicted to building...
Freddie B's Avatar
Omaha Nebraska
Joined Feb 2006
5,992 Posts
Quote:
Originally Posted by helidude22 View Post
So the under-camber is the airfoil? Sorry for being a newb.
Yes. Search for something like the GWS Slow Stick, or some early WWI Biplanes, or somethig prior to the war, and look at the wings. It creates much drag, but tons of lift. Limits high speed too, but it has everything you are looking for on this design. It also makes the wing much stiffer, and stronger.

An undercamber wing needs a little more incidence, which means about 2-3 degrees more up on the leading edge. On this size plane, maybe that would equate to another 1/8" raised at the leading edge.

Fred
Freddie B is offline Find More Posts by Freddie B
Reply With Quote
Old Sep 09, 2010, 11:44 AM
Registered User
hauntfreaks's Avatar
Cherry Hill, NJ
Joined May 2005
631 Posts
this is a wing I built for one of mine Embers... 3mm depron and to create the under camber I used a 1" dowel and rolled it out...

hauntfreaks is offline Find More Posts by hauntfreaks
Reply With Quote
Old Sep 09, 2010, 06:45 PM
Registered User
wrcsti's Avatar
Joined Jan 2008
721 Posts
double kf huh?
wrcsti is offline Find More Posts by wrcsti
Reply With Quote
Old Sep 09, 2010, 07:27 PM
Registered User
hauntfreaks's Avatar
Cherry Hill, NJ
Joined May 2005
631 Posts
Quote:
Originally Posted by wrcsti View Post
double kf huh?
yep... and seems to work really well....

here is the Link to more photos
hauntfreaks is offline Find More Posts by hauntfreaks
Reply With Quote
Old Sep 09, 2010, 08:42 PM
Registered User
ckreef's Avatar
Danville, GA
Joined Aug 2010
824 Posts
Here is a ember style wing (with ailerons added). I rolled the foam over a round surface to get the airfoil and then used 4 ribs so it maintains the shape over the long run. I scored the bottom of the wing in the middle and then bent it for a little dihedral.

The rolled foam makes a fairly rigid wing without having to add any carbon fiber.



ckreef is offline Find More Posts by ckreef
Last edited by ckreef; Sep 09, 2010 at 08:48 PM.
Reply With Quote
Old Sep 14, 2010, 02:55 PM
Registered User
Joined Jul 2008
12 Posts
Pitts Special - 35 cm

Im working on it.
aeroesteban is offline Find More Posts by aeroesteban
Reply With Quote
Old Sep 14, 2010, 04:42 PM
Nothing flies like a Pitts
Meshuggah's Avatar
Stockholm, Sweden
Joined Aug 2006
317 Posts
Nice Pitts! What is the WS and weight?
Meshuggah is offline Find More Posts by Meshuggah
Reply With Quote
Old Sep 15, 2010, 01:07 AM
Registered User
kylewoody's Avatar
United States, FL, Crestview
Joined Oct 2008
558 Posts
Scratchbuilt F4F Wildcat from 3MM Depron. Very light, flies awesome, neutral stability. All the guts (brick, motor, etc.) are from a Parkzone Sukhoi.



Kyle
kylewoody is offline Find More Posts by kylewoody
Reply With Quote
Old Sep 15, 2010, 08:08 AM
Registered User
ACT, Australia
Joined Jul 2008
34 Posts
Dumas 17" Tiger Moth - RET

Ready for maiden flight on Saturday evening - Tuggeranong, Canberra. Once we see how that goes, I may add the stickers/roundels on for a bit more colour.

17" Dumas kit built "stock" (no wood substitutions), covered in Esaki tissue. Wheels from the PZ UM-P51. A true tail-dragger (no tail wheel or skid), but can turn "on a wingtip" once there is a bit of air moving over the rudder.
Vapor green dot brick, rudder-elevator-throttle. BSDMicro 7mm blue motor with 4:1 gearbox. plenty of thrust on a GWS 5x3.
Flying weight 30-32 grams (haven't gotten my good scales out yet)

Whilst admiring the wonderfully light and flexible control horns on the UM P51 and T28 and wondering if you could buy them separately, I stumbled across a sheet of cyano hinge material. light, flexible, easy to cut. Used on the rudder and is much better than the 1/64" ply horn on the elevator.
DarrylB is online now Find More Posts by DarrylB
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Pictures: When planes were able to show off, at air shows Patrick Plawner Life, The Universe, and Politics 126 Mar 26, 2013 06:30 AM
Cool Show off your Parkzone Micro P-51!!! P-51C Scratchbuilt Indoor and Micro Models 938 Nov 20, 2012 06:49 PM
Discussion Show us those planes you really need to replace! JimTMich Parkflyers 8 Apr 26, 2012 11:05 AM
Discussion Show off those home made camera gimbals! ben1101 Aerial Photography 2 Jul 22, 2009 07:11 PM
Gallery Show off your planes texan Wimberley Valley Flyers 4 Apr 13, 2006 02:10 AM