May 15, 2011, 07:22 PM
Life begins at transition
As far as replacing the spars, if you're using WPBU, I wouldn't count on it being any stronger than plain foam. I kept my carbon rods. WPBU/glass isn't particularly strong.
The weight saving over epoxy isn't that great once you know how to work with resin. Strength/weight is certainly better with epoxy.

Don't bother watering the WPBU down, after all, most of it is water as it is. It flows out very nicely.

When shaping the fuse, use blue masking tape to protect the parts that are already glassed. 3/4oz glass doesn't protect very well, and when the tape starts to fray, you can just pull it off and put a new strip down.
Sign up now
to remove ads between posts
May 15, 2011, 07:41 PM
(TechDad) Bob Templeton
T3chDad's Avatar
As Odysis says, keep the spars. It's not going to add enough weight to make it worth the sacrifice in strength.
Latest blog entry: I've been flying!
May 15, 2011, 07:44 PM
Registered User
JMSR's Avatar
Thanks guys, I'm dedicated to the WBPU because I'd already got it in preperation for the build. Still yet to start (kit should be here this week), so I'll continue to keep the ear to the ground before the final decisions are made. I'm not sure if the 'additional' spars will be included in the kit, but keeping/adding them would be fine, they would help it balance too. Will certainly be taping to protect when shaping. This is good stuff, keep it coming.
Last edited by JMSR; May 15, 2011 at 07:49 PM.
May 15, 2011, 10:42 PM
Life begins at transition
Stock up on microbaloons. Makes a very nice slurry for filling rather than talc.
May 16, 2011, 07:18 AM
(TechDad) Bob Templeton
T3chDad's Avatar
Quote:
Originally Posted by Odysis View Post
Stock up on microbaloons. Makes a very nice slurry for filling rather than talc.
I discovered this late in the construction of mine. If they are available to you, microballoons are WAY better than talc/baby powder for mixing with WBPU. It is SO much lighter. Arguably, it's more dangerous for inhaling than talc, so if you go that route be sure to do your sanding outside with a mask.
Latest blog entry: I've been flying!
May 16, 2011, 01:26 PM
North weald Wing
thaltis's Avatar
A video of me catapulting my Su-37. It's my first time using a catapult, and it was å sucsess. I have a error in the text, I use two GH micro parkjets. Not two parkjets. It have the speed,and lands like a trainer. I simply love this plane.

Enjoy

http://m.youtube.com/?client=mv-goog...?v=wvlPjq4zY7U
Last edited by thaltis; May 16, 2011 at 01:31 PM.
May 16, 2011, 01:41 PM
(TechDad) Bob Templeton
T3chDad's Avatar
That's great! She does get nice and slow for landing.
Latest blog entry: I've been flying!
May 16, 2011, 04:19 PM
Registered User
simonslim's Avatar
Mine is nearly ready for fitting out with electrics. Looks rather menacing.
May 16, 2011, 06:08 PM
(TechDad) Bob Templeton
T3chDad's Avatar
Looking good slim! Of course, almost anything would look menacing next to an F-22.
Latest blog entry: I've been flying!
May 17, 2011, 03:17 AM
Registered User
simonslim's Avatar
Quote:
Originally Posted by T3chDad View Post
Looking good slim! Of course, almost anything would look menacing next to an F-22.
Cheers bud, the sanding is a chore but with this one being a bit bigger than standard, I can get in with a orbital sander.
May 17, 2011, 02:14 PM
Registered User
I am looking at building one of these and I was wondering how much of the mixing I could do with a dx7 for the thrust ventoring? And would I be able to switch it on and off with the mix switch?
May 17, 2011, 03:54 PM
Registered User
simonslim's Avatar
Don't know much about the DX7, this one's just having tailerons with perhaps ailerons retro fitted if I think it needs them.
Comin on slowly but surely.
May 17, 2011, 04:33 PM
customstandoffs
cmala's Avatar
Quote:
Originally Posted by 5jays View Post
I am looking at building one of these and I was wondering how much of the mixing I could do with a dx7 for the thrust ventoring? And would I be able to switch it on and off with the mix switch?
I think you can do everything but yaw thrust vector control if I remember correctly. I didn't set that up in my DX7 and it was probably a limitation of the radio.....just didn't have enough mixes available.
May 17, 2011, 07:49 PM
(TechDad) Bob Templeton
T3chDad's Avatar
Quote:
Originally Posted by simonslim View Post
Don't know much about the DX7, this one's just having tailerons with perhaps ailerons retro fitted if I think it needs them.
Comin on slowly but surely.
It's looking great simon. You work fast!

Quote:
Originally Posted by 5jays View Post
I am looking at building one of these and I was wondering how much of the mixing I could do with a dx7 for the thrust ventoring? And would I be able to switch it on and off with the mix switch?
Quote:
Originally Posted by cmala View Post
I think you can do everything but yaw thrust vector control if I remember correctly. I didn't set that up in my DX7 and it was probably a limitation of the radio.....just didn't have enough mixes available.
According to Steve's original controls post WAY back in the thread, you need seven mixes. I think the Dx7 only has six...
Latest blog entry: I've been flying!
May 18, 2011, 04:57 PM
Registered User
simonslim's Avatar
Not much done today, fitted the elevators and sanded some more Not to worry, it'll be worth it in the end.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Super Bandit Park Jet jetset44 Pusher Prop Jet Models 1094 May 04, 2016 08:36 PM
Discussion SU-38 super Flanker... pps/ going e-power Insanety Pusher Prop Jet Models 2 May 02, 2008 09:47 AM
Video Sukhoi Su-37 Maiden Flight Nadim Electric Plane Talk 2 Jul 12, 2007 04:41 AM
For Sale Walkera SU-27m/SU-35 Super Flanker $100 skotbro Aircraft - Electric - Jets (FS/W) 3 Dec 06, 2006 08:42 AM
Power set up for Great Planes Sukhoi SU-31 3D Profile Park Flyer Airplane? ChrisK7 Beginner Training Area (Aircraft-Electric) 0 May 14, 2005 06:15 PM