By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

F86 "Gamma" Build

All Topics | Latest Posts

Search for:  in Thread Title in  

Martin Gay29/07/2019 14:38:56
avatar
130 forum posts
51 photos

The second wing has been completed to the same stage, so onto the fuselage construction.

Checking the fit of F15 at the rear end. This is one of the "Gotchas" on this model. It is very difficult to retro fit F15 after the rear formers are glued up!All looking good.

img_2936.jpg

Martin Gay29/07/2019 14:42:07
avatar
130 forum posts
51 photos

At the front end all the other formers are checked for fit and fettled with a sanding block, if required.

F14 is fitted through three of the formers - again another "Gotcha" if it is forgotten.

img_2942.jpg

Martin Gay29/07/2019 14:46:13
avatar
130 forum posts
51 photos

img_2934.jpgThe plan calls for balsa keels 1/8" x 1/4" for the rear half of the fuselage. These can be a bit tricky to bend properly so two pieces of 1/8" square can be used as they will follow the curve easier.

I chose to cut some slotted keel pieces from 1/8" sheet instead. It takes a bit longer but locks all the formers in tight!

img_2940.jpg

Edited By Martin Gay on 29/07/2019 14:49:10

Martin Gay29/07/2019 14:48:41
avatar
130 forum posts
51 photos

3/16" balsa stringers added to tie all the formers together. These are not structural items, so a softer grade of balsa could be used.

Then the fun (planking) starts.

img_2944.jpgimg_2943.jpg

Edited By Martin Gay on 29/07/2019 14:49:42

Martin Gay30/07/2019 11:55:46
avatar
130 forum posts
51 photos

Here is a messy photo from the prototype build that shows the fuselage stringers and the original F1.

img-20190224-wa0008.jpeg

Martin Gay30/07/2019 11:58:05
avatar
130 forum posts
51 photos

Another messy bench photo of the prototype fuselage being planked. I used 36 inch long strips to do this one and had to have multiple joins in the planks. Each joint was placed over a bulkhead former for strength, however there is nothing to stop you from using 48 inch long balsa planks.

img-20190224-wa0010.jpeg

Martin Gay30/07/2019 11:59:08
avatar
130 forum posts
51 photos

Compare this image of the prototype 36 inch planking with that of the next post.

img-20190226-wa0000.jpeg

Martin Gay30/07/2019 12:01:34
avatar
130 forum posts
51 photos

This is the latest, "Gamma" build using 48 inch long planks. The finish is much better this time around, probably because I am not rushing it and I have had a bit of practice recently!

img_2947.jpg

img_2945.jpg

Martin Gay30/07/2019 12:02:05
avatar
130 forum posts
51 photos

img_2949.jpg

Bob Jennings 130/07/2019 12:09:06
avatar
140 forum posts
221 photos

Nice planking. You have substantially more pins than I do! Great work.

Phil Beard18/08/2019 20:21:35
avatar
35 forum posts
54 photos

Martin,

Have been looking at the plans today so that I can order things up and was wondering what Servo's you've used in the prototype?

I've always used Futaba Radio Gear and would like to know which Servo would be most suited as I've always used S148's or S3001's which have always worked out ok but I can see that I will need smaller Servo's for the Sabre build. Any advice would be greatly received.

All the Best

Phil Beard

Phil Beard18/08/2019 20:33:49
avatar
35 forum posts
54 photos

Martin,

Have been looking at the plans today so that I can order things up and was wondering what Servo's you've used in the prototype?

I've always used Futaba Radio Gear and would like to know which Servo would be most suited as I've always used S148's or S3001's which have always worked out ok but I can see that I will need smaller Servo's for the Sabre build. Any advice would be greatly received.

All the Best

Phil Beard

Martin Gay18/08/2019 21:25:52
avatar
130 forum posts
51 photos

Hi Phil,

I used cheap Turnigy 9018MG servos in the prototype model. Any micro size servos will fit in the wing.

Futaba 3150 servos (or similar) will work. They cost more though!

Phil Beard21/08/2019 15:24:22
avatar
35 forum posts
54 photos

Martin,

Hopefully this will be my last question.

What size of Piano Wire and tube did you use for the Tail using the SLEC SL834-R Obtuse Angle Tail Horn.

Just going to check with what I've got in stock or purchase along with my wood order and the tail horn.

Thanks for your help as I'm hoping to have everything ready and waiting on the 1st Nov to start the build.

All the Best

Phil Beard

Martin Gay21/08/2019 22:22:29
avatar
130 forum posts
51 photos

Hi Phil,

You can drill out the tail horn to suit the wire you have. However it must still fit inside the tailplames.

For info the prototype used 1/8" (8g or 3.2mm) for the front joiner and 3/32" (10g or 2.4mm) for the rear joiner. The rear needs to be thinner as it is closer to the tail trailing edge.

Edited By Martin Gay on 21/08/2019 22:23:23

John H. Rood19/09/2019 17:31:14
avatar
187 forum posts
250 photos

Martin, may I ask what types of glue have you been using thus far? I'm especially curious as to what works well with the planking process, as in, "sandability". Cheers on a great build.

Martin Gay21/09/2019 17:05:15
avatar
130 forum posts
51 photos

Hi John,

I use Titebond Original. It grabs in about 20 minutes and is easy to sand.

Martin.

20190921_170038.jpg

John H. Rood21/09/2019 18:40:10
avatar
187 forum posts
250 photos

Martin, thanks! yes

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E! 

Support Our Partners
Addlestone Models
Wings & Wheels 2019
electricwingman 2017
Slec
CML
Cambridge Gliding Club
Pepe Aircraft
Gliders Distribution
Advertise With Us
Sarik
Latest "For Sale" Ads
New Poll - Sticky situations...
Q: How often - when using superglue - do you end up with it on your fingers?

 Every time
 Occasionally
 Sometimes
 Rarely
 Never
 Wear rubber gloves

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us