1/12 scale scratchbuilt sopwith pup - Page 2 - RC Groups
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Oct 08, 2012, 09:55 AM
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portablevcb's Avatar
Rob, our patience is not at issue here We will just sit and enjoy.

The contrast between the flying version and museum will be an education in itself.

Charlie
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Oct 08, 2012, 03:36 PM
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turbonut's Avatar
HI Rob,
Still big fan of your work even if every time I take a look I feel sic about how I build.. cant wait to see the progress
Oct 09, 2012, 08:31 PM
I eat glue
Know what you mean. I'm on my way out to buy a big hammer.
Oct 10, 2012, 03:58 AM
Registered User
Hi Rob, Great build, I love the old warbirds! I was just wondering if you could post a pic (whenever you get the chance) of the antique solartex and the linen solartex side by side or on top of one another. I am trying to get an idea for the difference between the two. Thank you so much, and if it is too much trouble don't worry about it.

-Greg
Oct 10, 2012, 11:34 AM
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bmutlugil's Avatar
Good to see you back at work on a wonderful model, and to see you in better health..

Bulent
Oct 26, 2012, 10:44 AM
Registered User
Quote:
Originally Posted by gjap
Hi Rob, Great build, I love the old warbirds! I was just wondering if you could post a pic (whenever you get the chance) of the antique solartex and the linen solartex side by side or on top of one another. I am trying to get an idea for the difference between the two. Thank you so much, and if it is too much trouble don't worry about it.

-Greg
heres a quick photo, the linen on the left is opauqe and leans to a red/yellow where as the antique is tranlucent and lacks the red pigment of linen. hope this helps.
Oct 26, 2012, 10:55 AM
Registered User

1/12 scale sopwith pup


believe it or not i'm almost finished with the first version, let's call it a animated model and will be starting the flying version in a week or two matt. i did this first build differently in that i did the build and saved the pics as i went along so i will be posting them all within the next day or two in some kind of chronilogical order. the first set of pics is of the fuse frame and tail skid. everything is built as close to the real plane as possible with the exceptions of the framework which will be covered.the smallest elastic cord i could find seemed to large and to stiff to get the action on the skid more scale so i found a way to retrieve the inner strands in nice long lengths and used four of them bound and twisted and works awesome.
Last edited by spikkkkkkkk; Oct 26, 2012 at 11:06 AM.
Oct 26, 2012, 11:10 AM
Power Upward
GeorgeG97322's Avatar
Rob, your craftsmanship is just fantastic. I wish I had your patience and skill.

George
Oct 26, 2012, 11:19 AM
Registered User

pup tail sections


the next pics are of the stab, elev. and tail sections. i used 1/32"x3/32" bass strips as lamina to make the outer sections around a template of waxed lite ply. aside from some rigging hardware which will be brass all the metal work will be made or etched from aluminum. such as the control horns. the horns are 0.024 thick alloyed alum.BTW that is carbon fiber.
Oct 27, 2012, 02:32 AM
Registered User

pup instrument panel


this group of pics is of the instrument panel. still a few things to add.there is also a large group of pics of the fuse and interior of the cockpit, throttle etc.some of the servo locations will be different on the pup flyer. i know that some pups had a wicker seat but this particular design from a plane in a museum in england had the bullet proof seat.
Oct 27, 2012, 02:37 AM
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mick reeves pup plans


here are a couple of pics of the mick reeves pup plans i'm useing for a basis for the build.
Oct 27, 2012, 04:29 AM
Registered User

landing gear and cowl


the landing gear was made from streamlined aluminum with a alloyed aluminum rod core through out. the axels are brass tube hinged in the center. the cowl, well that's another story. i wanted to make a spun alum. cowl but only had enough stock for 8 attempts. spinning alum. is not as easy as they make it look and i have kind of a makeshift set-up attached to the lathe to do this. i ended up for now on this proto type making a glass cowl which isn't bad but i want a spun alum. cowl so on the pup flyer i'll attempt this again. i know that if i have the right kind of stock and i refine my set-up i can produce one and in time like etching i can master it. again charlie thanks so much for the lathe, i will make good use of it.
Oct 27, 2012, 04:32 AM
Registered User

pup


Quote:
Originally Posted by GeorgeG97322
Rob, your craftsmanship is just fantastic. I wish I had your patience and skill.

George
thanks george.
Oct 27, 2012, 05:57 AM
Matt Haugh
hoffboy's Avatar
Quote:
Originally Posted by spikkkkkkkk
...will be starting the flying version in a week or two matt...
Incredible progress!

I look forward to committing your work to the skies.

-Matt
Oct 27, 2012, 11:51 AM
Registered User

side stitching


a few pics on how i aproached the stitching on the sides of fuselage. i etched the panels in 3 sections and cold welded them together. i ended up useing the full panel opposed to a thin border. this particular stock is 0.004 thick and bends very easily. i ironed down the fabric onto the aluminum and then stitched with kevlar thread glueing from the rear every tenth hole. after that was done i anchored the alum. section with the fabric ironed on into position with contact cement and then just pulled taught and ironed to frame as if were just a piece of fabric,and shrunk with a heat gun.


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