The GB Deezil replica shown above has been run.

Fits are excellent. Silky piston/liner. The bottom end incredibly smooth and free, yet no oil weeps from the front of the bearing. Contra-piston fit is perfect. Gas tight, but jumps up readily when running if compression is wound back. When turned over slowly with a propeller fitted, the piston falls to BDC under its own weight. It feels extremely free but I doubt this one has a roller bearing, which some of the GB Deezil replica's were reputed to feature.
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It starts first or second flick after one choked turn; very like a good Mills 1.3. Every time. Even if under compressed. Manners are impeccable.

Props selected and shown below are a Kavan "FK" blue nylon 10 x 4; and an ancient Berkeley (?) "Air-O-Stunt" 10 x 4 'paddle prop'.

The Kavan was turned at about 6,300 RPM. A couple of hundred lower for the Air-O-Stunt.

In summary this is a first class "olde time" 2 c.c. side port. One can only wonder if the owners of GHC really knew what they had with the design.

Derek,
what is your opinion of that test stand?
I have the mount section but not the tank part and was wondering if the tank bit is worthwhile chasing.

Thanks.

P.S. Love that wooden paddle you have in pics 3 and 4!

Test stand is great. Available from a vendor who lists on the UK well known auction site.

I love the looks of the Air-O-stunt prop so much, I ran it.

https://www.youtube.com/watch?v=2xhz...ature=youtu.be

Wonderful engine. Mines in this.http://www.rcuniverse.com/forum/atta...mentid=2038114

Thanks, on the strength of that I just purchased the tank section.

Who knows what it is?http://www.rcuniverse.com/forum/atta...mentid=2038115

Comet Interceptor...?

ChrisM
'ffkiwi'

Your the winner.:)

That tiny fin and the subfins along with the semi circular wingtip combination is quite diagnostic.......and besides...I have a sub 4oz 020 replica 31" span version-which is haiirrryyy......! .what size is your one Howard?

CJM

It's a the 48in version Chris, and flies quite well. Got the plan from Pondy in 1976 that shows both 42 and 48 span wings.
Originally in 1977 I built 48 size with a sparky O&R 23 in it, that flew but when it arrived was the problem. Very heavy and it got damaged.
Fixed it up and put a Green Head 15 in it, and that was a good combination until it DTd onto a barb wire fence and demolished it.
This above one is using a couple of bits of the original and I stuck the DEEZIL into it as more or less a fun flier, and that it is. As said, it goes okay and is quite stable.

Well to be fair the type attached to the photo does say "Interceptor 48in Deezil power.":rolleyes:

Good spotting. ;)

Here is one of my Deezil engines. This one is a CS, I also have a couple of Burfords and many original ones, some of which have been rebuilt with new cylinders and pistons so they actually run. This CS engine uses a self-machined inlet and OS .10 carb. It turns out to be an excellent R/C engine, very responsive.
.http://www.rcuniverse.com/forum/atta...mentid=2099441