Beyond The Sprues

Current and Finished Projects => Physical Models => Aero-space => Topic started by: Robomog on November 21, 2020, 03:04:39 AM

Title: XP-51V Vertistang
Post by: Robomog on November 21, 2020, 03:04:39 AM
Hi All

This ones going to be a challenge for me as its going to need a vast amount of accurate cutting, not like my cut and shut style of modelling.

Here's the inspiration courtesy of Tophe, I had a word with him on WhatIf and he is happy for me to plagiarise his creation.

(https://live.staticflickr.com/65535/50622706272_749489180c.jpg) (https://flic.kr/p/2k8mAUy) (https://flic.kr/p/2k8mAUy) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr

I'm going to build it slightly different with no rocket engines but with two piston  engines driving contra-rotating props, the placement of the oil cooler and tail planes may also be different but you get some idea of the project.

I'm using a pair of these

(https://live.staticflickr.com/65535/50622697547_b1d6c20f69_z.jpg) (https://flic.kr/p/2k8myj8) (https://flic.kr/p/2k8myj8) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr


and here is progress so far,  just trying to work out the cuts as to add another engine I will need to extend the fuselage both front and back so as to balance out the weight and maintain the centre of gravity
(sortof  :D)

(https://live.staticflickr.com/65535/50622693752_21e1c29243_z.jpg) (https://flic.kr/p/2k8mxbG)20200728_220713 (https://flic.kr/p/2k8mxbG) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr

Gonna be a slow project.......

more when it happens

Mog
>^-.-^<
Title: Re: XP-51V Vertistang
Post by: ericr on November 21, 2020, 03:34:38 AM

good direction !

Title: Re: XP-51V Vertistang
Post by: finsrin on November 21, 2020, 12:08:04 PM
Best wishes on "accurate" cutting !
Title: Re: XP-51V Vertistang
Post by: Frank3k on November 21, 2020, 01:14:54 PM
Measure once, cut twice! Or is it measure twice, cut once?

Interesting project! What are you going to use for the two remaining tail fins?

Title: Re: XP-51V Vertistang
Post by: kitnut617 on November 22, 2020, 12:24:56 AM
Shades of this Supermarine project. It'll be interesting to see where you go with this ---
Title: Re: XP-51V Vertistang
Post by: Robomog on November 22, 2020, 09:44:31 AM
Thanks for the comments guys

Eric: Thanks

Finsrin:  gonna try and be accurate but I can see it degenerating into  bodge and filler

Frank: I've taken both tail fins off so that I can centre the tail, I will probably use the four tailplanes with a plastic fillet

Kitnut: wow never knew that one existed !

Mog
>^-.-^<
Title: Re: XP-51V Vertistang
Post by: jcf on November 22, 2020, 10:05:15 AM
Measure once, cut twice! Or is it measure twice, cut once?

Interesting project! What are you going to use for the two remaining tail fins?

Cut three times, measure once.
Title: Re: XP-51V Vertistang
Post by: Robomog on November 29, 2020, 07:34:48 PM
Hi all


Finally committed to cutting plastic, but it hasn't gone to well partly my fault, partly equipment.

The vertical cuts with the razor saw went swimmingly but the horizontal cuts went awry due to an out of kilter cutting disk resulting in a very rough and wide cut on  one side, I finished the other cuts with a sharp knife but the results weren't pretty.

Here's the first cuts

(https://live.staticflickr.com/65535/50655099542_80fbdf2629_z.jpg) (https://flic.kr/p/2kbdCid) (https://flic.kr/p/2kbdCid) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr

I originally intended to invert the rear engine but this would have put the exhaust stacks virtually on top of the wing so it was redesigned to be back to back, unfortunately I then realised the engines were too close together so I had to part them and add a spacer between the two which became a bit of a bodge to make them line up.

Here's a the story so far, and a quick mockup to make sure everything is going in the right direction.

(https://live.staticflickr.com/65535/50655010116_21ef62800a_z.jpg) (https://flic.kr/p/2kbdaHo) (https://flic.kr/p/2kbdaHo) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr

(https://live.staticflickr.com/65535/50654269578_bfdfbddc34_z.jpg) (https://flic.kr/p/2kb9nzu) (https://flic.kr/p/2kb9nzu) by Robomog (https://www.flickr.com/photos/54032744@N08/), on Flickr

I used both engines so that I could line up the exhaust stacks, the rear engine will be faired into the body with filler. I will need to add a bigger air intake and will relocate the oil coolers probably under the wings.

This is a case of "yea I measured it carefully, but still managed to screw it up" you can always hide a lot of mistakes under a layer of filler tho  ::)

Thanks for looking

Mog
>^-.-^<