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Old Jan 12, 2002, 01:06 PM
wad
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Joined Jan 2002
18 Posts
1/8 scale Sopwith Pup

Has any one tried the 1/8 scale Sopwith Pup from D & B Sports scale ?

Here's the link

http://www.dbsportandscale.com/sopwith%20pup%20E.htm
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Old Jan 12, 2002, 01:13 PM
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Mike Smart's Avatar
Aylesbury, Buckinghamshire, Great Britain (UK)
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I've built it as an I.C version and I would say its a bit on the heavy side. Those moulded wheels are heavy.

Mike Smart
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Old Jan 12, 2002, 08:41 PM
D.G.B.
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Southington, Connecticut, United States
Joined Jun 2000
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wad, do a search for Mr.Peter Rake i thing he has a plan for this plane.You can blow them up to your required size.He plans are easy and are usuallysp400 powered.i'll check also i thought i just seen it floating around in my collection. enjoy stefanP

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Old Jan 14, 2002, 12:46 PM
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I seriously looked at this kit about 18 months ago. There was a pretty good thread on it, but I can't find it using the search engine. Dereck had recalled either seeing it built or had some knowledge of the designer or kitting company. He thought it would be on the heavy side for an electric conversion. This obviously matches up with Mike's comments.

Mike - how much could a good builder save in overall weight by judicious building?

If I was to again consider a 1/8 scale (or slightly larger version) of this plane, I'd probably go with Peter Rake's design, as suggested by Komet44, and scale it up a bit.

One thing I was warned about in relation to the Pup is that the short nose moment make getting the CG difficult for an electrified version. May mean building special battery packs on or close to the firewall.

MMGM
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Last edited by MMGM; Jan 14, 2002 at 12:49 PM.
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Old Jan 14, 2002, 06:13 PM
D.G.B.
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Southington, Connecticut, United States
Joined Jun 2000
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Wad i have the peter rake plan.36"w.s.&26" fusalog length.the c/g is about 106mm from the front of the cowel.if your interested in the plans let me know.stefanP

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Old Jan 15, 2002, 03:49 PM
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MMGM,

Based on my knowledge of the I.C version, I believe that a pound (16oz) or possibly more could be saved on overall weight.
The moulded wheels are heavy, the spun cowl is relatively heavy, there was a lot of 3mm ply in the IC version and the general construction was 'beefy'. There's no doubt that most of the strip wood could have been taken down one stock size at least.

The problem is, by the time you have discarded the wheels, cowl and replaced the wood, you might as well build from a plan. I'd go with the Peter Rake plan.

Mike

PS, the original David Boddington design is probably around 30 years old and to be fair, at that time I believe it was intended for simple 2 channel R/C (no throttle). No doubt the construction was reflected in it's original purpose.
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Old Jan 16, 2002, 04:22 AM
wad
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StefanP,

I would be very interested in the Peter Rake plan,
What motor is it for ?
What are the controls ?
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Old Jan 16, 2002, 10:47 AM
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Lynnwood, WA USA
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wad,

IIRC, like most of Peter's published plans it is a geared s400 model, with rudder/elevator/throttle controls.

MMGM
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Old Jan 16, 2002, 10:38 PM
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Singapore
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Hi wad,

Although I don not have any experience with the 'Pup', thought you might be interested to see my version of its offspring. I might even build a 'Pup' if I have the plan and time.
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