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Member postings for Harry Twist

Here is a list of all the postings Harry Twist has made in our forums. Click on a thread name to jump to the thread.

Thread: An Introduction to the PSSA 2020 Mass Build Project
25/02/2020 10:01:19

Hi All, thought I would pop this here, this magazine is currently on sale, got mine in Tesco, but I'm sure its probably in WH Smiths and other outlets. Its approx 160 pages of Sabre history and information. Its a good reference for lots of the detail needed in the build: panel lines, nose shape, tail shape and the tailplane/ fin rear fuselage shape! It covers all the marques including the Fury and Sabre dog. Plus its a good read!

( I think its availability has been mentioned in a blog - by John Tee in Tony's build blog, so apologies if this is a repeat).


Thread: sabre made in Belgium
23/02/2020 00:56:48

Hi Dirk, they look superb, very clever idea and a great scale item!

Thread: Sabre Drop Tanks
22/02/2020 18:57:38

Thanks Martin and Gordon for producing this helpful pdf, It'll be fun making up the tanks.

On the subject of tanks, have a look at this little bit of craftsmanship from three Sabre drop tanks:

Upcycling drop tanks...

Thread: Su-25 Frogfoot for slope
19/02/2020 22:39:21

Hi Robin, I would go scale anhedral ....or at least take a view... maybe somewhere midway between scale anhedral and flat? But not flat. The anhedral wing is such a characteristic of the Frogfoot it would be great to retain it.

Thread: F-86A Sabre Montana Air National Guard
19/02/2020 21:35:01

Hi All, thought I had better update my blog! Various combinations of events in Dec/Jan contributed to massively slowing down my build rate, but I'm back to moving the Sabre along, and hopefully I'm not too far behind!

So, the fuselage is now pretty much planked apart from a small topside area, which I have left to allow me some access until I'm totally happy that all is good inside. I'm reasonably happy with the planking, many tapered pieces were cut and let in, and many angled planks were needed, all great fun and rewarding when it comes off! I did'nt manage to do any substantial sheeting in the end - I think the widest planks I managed on the bottom were in the order of 10mm.

I've removed a large chunk of former F6, then cut and sanded back all overhanging planks front and back and then given the whole fuselage a first pass rough sand.

In addition I have started to make up the tail group, fin, finstrake and tailplanes. I'm going down Phil's route with the tailplanes and using three laminations ( ie 1/8th trapped between 2 x 3/16ths).

I'm also now starting to think about the cockpit area and deciding how deep I can go with a pilot figure, I suspect not to far!

Couple of shots to share...


Fuselage planking nearly done


Laminated wingtip blocks, fin, strake and tailplane pieces prepared


Edited By Harry Twist on 19/02/2020 21:35:40

Thread: Chris McG F-86 Sabre Dog build blog
19/02/2020 20:43:40

Hi Chris, that nose profile is really getting there now. Once glassed and painted it will look great. Roll on the Sabre dog!

11/02/2020 16:00:30

Hi Chris, I'm still watching also, various factors including illness have held me back a little recently but all good to go now! Great progress and great application of Andy B' sanding method.

Thread: PSSA Gliding Events
30/12/2019 20:47:50

If the forecast (XC weather) stays as is, I'll be down on the 2nd.

16/12/2019 11:29:10

Sounds like a plan... Count me in! I'll bring cake to go with Andy's offer of coffee & sandwiches!

Edited By Harry Twist on 16/12/2019 11:31:20

Thread: PSSA Mass Build weekend attenders
15/12/2019 17:18:55

Yep I'll be there!

Thread: Chris McG F-86 Sabre Dog build blog
06/12/2019 11:39:24

Hi Chris, just to back up some of the other comments, keep on posting! It's great to follow these Sabre build blogs.

Thread: F-86A Sabre Montana Air National Guard
02/12/2019 19:36:26

Thanks Phil, hope you get your Sabre on the go soon.

General question to Sabre builders out there, has anyone tried any fuselage sheeting or part sheeting? or is everyone planking all round? I think there may be some part sheeting opportunities in a couple of places such as the rear underside or forward of the canopy. I'm not there yet but may look at it. Any comments appreciated!

Thread: Sabre build "Gotchas"
30/11/2019 19:15:33

Hi Martin, this is a very minor one, not really a "gotcha" but thought it may be worth adding.

The parts come with an occasional minor triangular shaped "pip" on their edges (presumably where they are released from the parent sheet). It's no problem at all to sand them off prior to use. A surface that perhaps may get missed from this sanding is the inside square section of F2 and F4 where the battery box sits on the internal flat portions of those formers. Easy job to do before the fus is jointed. Its no great shakes if it gets missed - just helps with a flush/ tight joint between battery box and formers.

Edited By Harry Twist on 30/11/2019 19:16:10

Thread: F-86A Sabre Montana Air National Guard
30/11/2019 19:03:14

Hi Chris & Mark, thanks for your comments.

Ref the planking - I added 10 planks on the first half before adding the second half in sections. Each plank is 7mm wide, they were all butted together, but distributed above and below the fuselage centreline. ( I started on the centreline and worked down by 5 planks, then back to the centreline and worked up 5 planks).

I reckoned that the combination of planking and stringers, plus adding the top spine (which doubles the spine thickness) would minimise any warp risk. I think its further helped by adding the substructures of the second half, one by one, allowing drying in between. Anyway - I don't think its warped yet!

I'll carefully plank the non planked side, then do alternate side planking until I'm done.

Edited By Harry Twist on 30/11/2019 19:17:43

29/11/2019 23:22:00

Hi All, I've moved the fuselage on a little more. I have been worried about the major "glue up" required to join two part planked fuselage halves in one go. This involves, applying glue along all the major joint lines of the top and bottom spines, and along all the former joint lines, gluing and fitting the wing bolt plate, then aligning and clamping, all  in one gluing "event". I did'nt trust myself to get this all square and had visions of glue everywhere and an out of line fuselage!

So I tried an alternative. I part finished one fuselage half to the point of adding 10 planks (7mm wide). I then built the second half, section by section, onto the part planked first half. I starting by adding the straight top keel, then worked front to back, adding each sub structure in turn and allowing drying between each stage. At the end I added the stringers and the small part bulkheads of F3 and F5.

Photos hopefully show all!

Nose and battery box added, after top keel


Central crutch and wing bolt plate, I adjusted the plate to move it back approx 5mm to sit against F7



Tail unit, clamps and more clamps



Last addition- lower curved spine



End product


Edited By Harry Twist on 29/11/2019 23:23:23

Thread: Chris McG F-86 Sabre Dog build blog
29/11/2019 22:51:05

Hi Chris, Great progress with the wing there. Regarding the waffles... you've not just chopped up your wing jig and grilled it have you? smiley

Edited By Harry Twist on 29/11/2019 22:51:27

Thread: Andy Edmead Build Blog Sabre
27/11/2019 10:16:57

Good tips there Chris, here's another that may help for trimming false leading edges (and false trailing edges).

Take a steel ruler and sit it immediately behind the false le and sat on top of the ribs, with a scalpel cut through the part of the false le that sits above the ruler, then cut along the ruler with the blade flush and flat on the ruler surface. This leaves you with only the thickness of the ruler to plane down flush. Cut from in front of the wing. Staged photo shows what I mean ( wing in photo already trimmed).

Hope it is of some help!



Edited By Harry Twist on 27/11/2019 10:23:48

Thread: Canadair F4 Sabre XB812
27/11/2019 00:15:41

Looks like an absolutely 100% perfect launch to me....😁... The wind gods were very much on our side that day!

Edited By Harry Twist on 27/11/2019 00:17:04

Thread: DaveO Sabre build
24/11/2019 23:24:44

Hi David, looking very tidy.

Thread: Canadair F4 Sabre XB812
23/11/2019 23:45:45

Hi Chris, that's very very tidy, nicely done!

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