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Author Topic: VA Sopwith Pup 1:16 scale ~ BUILD  (Read 6137 times)
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Russ Lister
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« Reply #50 on: October 16, 2015, 04:44:22 PM »

Last post directly about the 'Palmer Cord' lettering .... honest!

Mk2 mask did work better .... they are now as good as I hoped I could manage to get them.
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Pete Fardell
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« Reply #51 on: October 16, 2015, 05:03:16 PM »

I thought the previous effort was impressive Russ, but that's truly spectacular!
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Russ Lister
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« Reply #52 on: October 16, 2015, 05:12:44 PM »

Thanks Pete ... nearly accidentally punned myself, so now I will do it deliberately!
I still can tweak it a little I feel ... but posting about it is becoming 'tyresome'
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« Reply #53 on: October 16, 2015, 05:26:32 PM »

Excellent Russ! So the tyres are painted foam?
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« Reply #54 on: October 16, 2015, 05:48:59 PM »

Jon,
I've already made a load of these tyres for my smaller wheels, so I am hoping that this stuff will work!

Until I can check that I won't get egg on my face, it is an undisclosed brand of 'rigid foamed resin'! More like a 'lightweight resin MDF' than foam to be honest.
About ten times the weight of the equivalent blue foam tyre that I was originally using, so it seemed a bit impractical, but the overall impact of the extra weight on the entirety of my smaller wheels is not too significant I feel ... they go from about 0.5g to 0.6g.
My worry is that they could shatter under an impulsive force .... I don't know why I'm so worried because they hold up in every test I have given them so far .... except crashing them in model aeroplanes!
I've tested them with a tension meter .. not recorded any results yet. They will take a force of about 300 grams without significant deflection as I remember.
The other very scientific test I have done is to flick them 'Subbuteo' style at a brick wall! .... with just the weight of the tyre itself, no real damage occurs whereas it did with the blue foam tyres.
I've been using the stuff for years for moulds and some details eg. the Lewis gun on my SE5a


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Russ Lister
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« Reply #55 on: October 16, 2015, 05:53:39 PM »

By the way ... I'm looking at about 1.5 to 2g each for the 43mm dia. Pup wheels. Not the lightest, but an easier material to work with than most.
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« Reply #56 on: October 16, 2015, 07:20:29 PM »

Glad I was able to contribute.

a.
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My arms are so weak, it's like that pushup I did last year was a total waste.
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« Reply #57 on: October 17, 2015, 04:08:48 AM »

Thanks Art. (just retrieved your email btw .. It had got 'spammed' automatically)
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« Reply #58 on: October 25, 2015, 04:49:54 PM »

At 9.30 this morning I discovered looking on Google Maps that the Indoor RC Scale Nats was closer to 90 miles rather than 60 miles away as I thought  Sad I just lost heart ... and went to 'work'.
I decided to spend some time on the wheels and reverted to my previous preferred method of ply 'fins' for the spokes. I just wasn't happy with the smallest hub I could make for the radial spokes as per the previous wheels.
Not the lightest, but they should be quite tough little beasts.

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« Reply #59 on: October 26, 2015, 03:24:39 PM »

I decided to set up the home made vacuum former today and try forming the wheel covers over the wheel hubs themselves.
Quite pleased with the first attempt .... the pulling in over the spokes is perhaps a little exaggerated, but at least I will not have to add any paint to give the effect of shadows.
I might just shadow in the rim at a more scale width and a couple of other bits ... but they are fairly well sorted now I feel, so I will be moving on to the next parts!

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« Reply #60 on: October 26, 2015, 07:18:46 PM »

That is very cool and could possibly even be used for a scale control liner!  I like it!
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« Reply #61 on: October 26, 2015, 07:29:15 PM »

Russ,
   That is some very fine work there. Well done to say the least and
that tire lettering is just outstanding. Following with great interest and
looking forward to seeing the completed Pup.

Skyraider
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« Reply #62 on: October 26, 2015, 09:49:00 PM »

I am friends with a Piotr Zawada from Poland.  He is a scale control line guy and years ago did a model of the A-20 Havoc. He sent me some samples of stencil painted markings that were like your tire markings.  They were stunning in the execution just like yours.  I have no idea how he made the stencils as that was about 20 years ago.  He won the CL scale world champs last year with a different model a chipmunk as I recall.  Absolutely stunning work on the tire!
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I used to like painting with dope but now I can't remember why!    Steve Fauble
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« Reply #63 on: October 27, 2015, 04:27:25 AM »

Thanks all  Smiley
Vinyl cutters have been around for a long while, so the masks could have been created in the same way that long ago
... it's took me this long to realise that they will cut so fine a mask!
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« Reply #64 on: October 29, 2015, 04:14:06 PM »

I formed a couple of more 'true to scale' wheel covers today ... I think I still like the exaggerated ones more though.
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« Reply #65 on: November 07, 2015, 04:26:15 PM »

I formed a trial wing tip today .... I'll find out tomorrow how successful it has been!
I thought I would be fiddling about with the carbon tow, but a bunch of suitable size and length seemed to just present itself to me .... I hope that this is a good omen!
The section will hopefully be about 1.2 x 1.2mm
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« Reply #66 on: November 08, 2015, 03:00:47 PM »

Well, it seemed to worked OK .... literally a bit rough around the edges, but that was more due to lack of preparation of the mould.

I was surprised at just how well the resin that I used soaked into the ply mould, even though I had given this a quick waxing.
I use polypropylene sheet for wrapping up my art work ... I used this between the mould and the base. This gave a mirror finish to the resin ... especially on the ply!
Some of the edges broke of when releasing the part from the ply .... I think that with a bit more preparation, this will not be as much of a problem.

What did surprise me was the weight. The chord is about 100mm and I was hoping for the part to be about 1g
Popped it on the scales straight out of the mould (ie. before trimming etc.) and it was 0.3g

I probably put less effort into this trial than if I had formed the tip with wood ... and the strength is obviously higher upon first handling.
I have reservations about handling the carbon, but otherwise I am looking forward to trying it again.
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« Reply #67 on: December 13, 2015, 06:01:42 PM »

Busy at work, so not much progress with the Pup.
I did get the chance to cut the mould grooves for the wingtips today though ... I'm going to take my time a bit more with the laying up, hoping that I can improve on the first trial piece.
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« Reply #68 on: February 25, 2016, 03:10:42 PM »

Not directly for this build, but part of the 'catalog' of details that I am building up.
I set up some 1/8th 'near scale' Lewis gun magazines ... partly for testing before attempting 1/16th versions and partly for a demo that I am due to give.
These are a bit shallow, but the 1mm diameter bit that I am using only has a cut length of less than 6mm.
Just the basic drum has been made.

If anyone is making a 1/8th gun and would like one, please let me know! .... hopefully I can pass it on at a meeting if possible.
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« Reply #69 on: September 30, 2018, 03:15:33 PM »

Once again, the years are spinning by and my projects lay largely static  Undecided

I was looking at my Aerographics Sopwith Camel kit the other day and was moved to create a few of the details drawn by Dave Causer.
The plans are far better than the overall kit .... in my case anyway. I thought that some of the bits would be common with the pup, so I set to work.

I was supposed to be working .... I'm too easily distracted! It's why a lot of my modelling gear is moving back home.
However, as you will see .... I even got distracted from my distraction!

I started with a 1/64" ply prop boss.
I also did the fuselage step and the inspection frames in 1/64", but these will be sanded thinner.

Dan .... I know you have the kit, so I did a spare set or ten if anyone needs them!
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« Reply #70 on: September 30, 2018, 03:22:21 PM »

Then my little distraction turned in the direction of prop blanks.
I laminated up some walnut and maple for a German Axial prop (distraction) but had to try it with the Sopwith outline.
This was too thin really as the laminated pressed down thinner than expected (just over a 1/4" instead of the 5/16" required).

The second blank is from a piece of ash I had at the right thickness


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« Reply #71 on: September 30, 2018, 03:26:46 PM »

I made two of the ash blanks ... then accidentally set these at 90 deg to each other.
Mmmm ... looks like an RE8 prop I thought (distraction) ... I wonder how easy to cross-half these would be (distraction).
Here's the result:
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« Reply #72 on: September 30, 2018, 03:30:16 PM »

"So when do I draw up the Axial prop?" my little mind kept asking.
I downloaded a blueprint drawing of an Axial prop.
Result:
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Re: VA Sopwith Pup 1:16 scale ~ BUILD
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« Reply #73 on: September 30, 2018, 03:33:25 PM »

The initial blank is a bit of an ugly thing, but with a bit of shaping it looks a whole lot better.
Suggestions for further distractions welcome .... I must admit I quite enjoyed it.
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« Reply #74 on: September 30, 2018, 06:08:11 PM »

I am enjoying this thread. Particularly since I am very slowly constructing an Aerographics Camel. I am procrastinating and building test pieces instead of getting on with the model. I tried mouding tyres using 2 part expanding foam in a plaster of paris mold, taken from an o ring. They came out with lots of surface bubbles looking more like the Onion Rings corn snack rather than rubber. So, I wonder what material you are using for your tyres?
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