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Old Feb 28, 2015, 12:10 AM
Balsadustus Producerus
Escondido, CA USA
Joined Jan 2001
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Wish I had the $200...

http://www.rcgroups.com/forums/showthread.php?t=2357855

Are these practical runners? Difficult to run? So tiny...
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Old Feb 28, 2015, 02:27 AM
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Reginald's Avatar
Belgium
Joined Aug 2004
4,224 Posts
The cooling case looks like beeing soldered on. It has an early number W 723 and I have his engine since 1978. Screw on heads ? how did that work ? Here is another one for sale on ebay England a redhead but alas a W again...thanks for the info all, I guess I will leave this one as is do not like fiddling un-soldering only to find out there's no fins at all and I vaguely seem to remember that image, it was a long time ago when I stripped that Taplin that I later cut apart to see the inside of the crank
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Old Feb 28, 2015, 02:32 AM
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Belgium
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Quote:
Originally Posted by Balsabird View Post
Wish I had the $200...

http://www.rcgroups.com/forums/showthread.php?t=2357855

Are these practical runners? Difficult to run? So tiny...
I do have quite a few Valentine engines and ran one or two but remember that they are not easy to start due to the tiny propellor that gives no inertia
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Old Feb 28, 2015, 02:35 AM
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Belgium
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Quote:
Originally Posted by sabre250 View Post
Reginald,

I spoke to Peter a few moments ago and confirmed that he does have pb33 engines available ex stock. His website is undergoing review, but he is easily contacted by email at:

info@peterburford.com.au

regards
David
Got no reply yet
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Old Feb 28, 2015, 07:01 AM
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Australia, NSW, Wollongong
Joined Sep 2013
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Originally Posted by Reginald View Post
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Reginald,

Peter is usually very prompt. However, it is the weekend and he may be racing his R/C yachts or at a race meeting in his car. Maybe give him another day or so.

regards
David
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Old Feb 28, 2015, 05:47 PM
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Joined Oct 2013
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Quote:
Originally Posted by Balsabird View Post
Wish I had the $200...

http://www.rcgroups.com/forums/showthread.php?t=2357855

Are these practical runners? Difficult to run? So tiny...
Hi Balsabird,
It is possible to run all the Valentine engines , but the real tiddlers do need a special fuel mix and viscosity, also usually a metal propeller (to have sufficient flywheel effect) and extreme care given the minute sizes.
I have run most of mine and actually flown quite a few, (whilst wearing cycle clips) just to see them in the air.
You have probably seen it before but there are some brief details on running these tiny motors on page 437 post 6542. There are some more images on posts 6535, 6541, 6647 & 6655.
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Old Mar 01, 2015, 10:28 PM
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Joined Nov 2013
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Bought a McCoy 09 with a broken crank - fixed that some time ago but it didn't run well. Tried it again couple of days ago, symptoms, great compression seal, easy as to move contra, piston hit contra when trying to wind up compression.

Thought about it overnight, checked the contra and sure enough upside-down !!

Runs beautifully now, maybe that is why someone broke the crank as that was the way I bought it !
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Old Mar 01, 2015, 10:42 PM
Sticks, Tissue & old Diesels
brokenenglish's Avatar
France, Centre, Amboise
Joined Nov 2011
1,819 Posts
Ed my McCoy 09 has always been a great runner.
Traditionally, there were "doubts" about them, because the contra-piston has an O-ring seal (I think...), but mine is perfect.
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Old Mar 01, 2015, 10:56 PM
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Both of mine are damn shockers ,neither will run and both leak like a sieve past the "oh my god ring " . Why do people who should know better do these things ?
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Old Yesterday, 03:54 AM
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fiery's Avatar
Hervey Bay, Queensland, Australia
Joined Mar 2008
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I had a FROG .80 Mk I that leaked past the "O" ring equipped contra.

A new "O" ring would have sorted it.

However, making a proper lapped contra piston effected a permanent solution
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Old Yesterday, 06:03 AM
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Mt Evelyn, Melbourne, OZ
Joined Dec 2008
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I had a Frog 80 MkI which was a very bitey little thing and needed a real knack to start.
By contrast my two MkIII's are very well behaved and run very strongly.
I definitely prefer a cast iron contra over the o ring version.
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Old Yesterday, 02:50 PM
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USA, TX, Grapevine
Joined Dec 2008
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Quote:
Originally Posted by Balsabird View Post
Wish I had the $200...

http://www.rcgroups.com/forums/showthread.php?t=2357855

Are these practical runners? Difficult to run? So tiny...
I was going to add that since the tolerances have to be so precise and miniscule inside these extra tiny engines, that they will wear out really fast. In some cases you get a few engine runs and then it doesn't have enough compression to run anymore.
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