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Jul 06, 2009, 03:30 PM
Slope or Winch who cares!
johnny "skorp"'s Avatar
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Discussion

Can you identify this engine ?


I have been clearing out my fathers garage after he passed away and I found this little gem of an engine.

My father used it in a racing boat in the 60's here in the uk, I remember it being very torquy and fast !

I think that its a Miles 0.75ci special.

My late father thought that the engine was rather hot.

Can anyone confirm what it is if I am right or wrong.

Thanks for looking.
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Jul 07, 2009, 12:49 AM
RC boat Rock Star
Nice find. The motor does appear to be a little ahead of its time with the intake.
It may be 7.5cc (.45 cu.in.) instead of .75 cu. in. from looking at the photo.
You probably aren't looking to sell it and I wouldn't blame you. There may be some sites that could give you some more info on it but I wouldn't know where to look off-hand. The MECOA site does have some collectables on their site and may be of some help.
Somewhere very close to me is an antique engine club/company or something that also specializes in rare and antique RC engines. By close, I mean within 5 miles of my house but I don't have their site either.
Jul 07, 2009, 01:41 AM
Slope or Winch who cares!
johnny "skorp"'s Avatar
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Cheers Ron,
Its not a 46 size engine for sure, I have plenty of 46 size aero engines and its way bigger then those !
The picture doesn't do it justice !
The top of the head is 2" across !
Its more like a 15cc, so it could even be a 0.65ci
But thanks for responding anyhoo.
Jul 07, 2009, 10:40 AM
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wparsons's Avatar
15cc = 0.90ci which is a really big engine.

Other than the diameter of the head, how is the size compared to a 0.46 plane engine? The water cooling jacket on the cylinder/head is adding quite a lot to the diameter.
Jul 07, 2009, 01:08 PM
Slope or Winch who cares!
johnny "skorp"'s Avatar
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Quote:
Originally Posted by wparsons
15cc = 0.90ci which is a really big engine.

Other than the diameter of the head, how is the size compared to a 0.46 plane engine? The water cooling jacket on the cylinder/head is adding quite a lot to the diameter.
Well here is the engine up against a brand new OS 46 AX.
As you can see the marine engine is way bigger.
Jul 07, 2009, 10:14 PM
Registered User
I just posted a link to this thread at the "MECOA" forum.

Good Luck,
USMC & Viking...! & Little Jack...!
Jul 08, 2009, 09:11 AM
Registered User
Posted a link to this thread on the UK Mayhem site, maybe they can help.
Cool engine
Jul 18, 2009, 06:54 PM
Two left thumbs
As I recall, Octura Models here in the USA produced engine castings in the 1950s for people to finish themselves. One model looked a good bit like that one.

Geoff


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