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Old Oct 28, 2012, 12:33 AM
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Today's "Mystery Engine" (no, I don't know what it is either)
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Old Oct 28, 2012, 12:37 AM
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And from the same German seller, "Mystery Engine" # 2
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Old Oct 28, 2012, 03:05 AM
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Today's "Mystery Engine" (no, I don't know what it is either)
One of the last "selbstbau" Kratmo versions. Typical shape of bypass and intake tube.
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Old Oct 28, 2012, 03:28 AM
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This OS Max CZ 11-PS a snap at $779.95.....
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Old Oct 28, 2012, 03:33 AM
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....or perhaps Sir would prefer this OS Max 40 PS for $1279.95 ?
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Old Oct 28, 2012, 03:48 AM
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....or perhaps Sir would prefer this OS Max 40 PS for $1279.95 ?
When the engine came out I had to pay 930$ in a well known modelshop. OS also specifically stated that there was NO guarantee for this one. I believe a max of 36000 rpm was stated by OS.
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Old Oct 28, 2012, 07:12 AM
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This OS Max CZ 11-PS a snap at $779.95.....

My God! I have one of those put away, NIB!

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Old Oct 28, 2012, 08:14 AM
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When the engine came out I had to pay 930$ in a well known modelshop. OS also specifically stated that there was NO guarantee for this one. I believe a max of 36000 rpm was stated by OS.
Mistake. Max rpm was 30000
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Old Oct 28, 2012, 08:26 AM
Bill Mohrbacher, MECA Fox Guy
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International Model Aero-Engine Collectors Society

Dear friends over there,

Does this Society still exist? When was it formed? When did it end?
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Old Oct 28, 2012, 08:27 AM
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My God! I have one of those put away, NIB!

There was also the CZ-11P that was cheaper to buy. Statement by OS was 'substantially less costly alternative to the CZ-11PS' in their 1992 catalog. Both are of 1,79cc. Difference between 11PS and 11P was the use of sharing many parts with the CZ-11 buggy engine in the 11P. The 11PS has 0,6 Hp. Wished I had one. Do'nt think they were for sale in Belgium. That price may well be paid by some collector. Wonder how many were made ?
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Old Oct 28, 2012, 08:31 AM
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Dear friends over there,

Does this Society still exist? When was it formed? When did it end?
If I do'nt mix up the name with something else I believe I used to be a member of that society. In any case it was run by Peter Scott when he lived in Switserland. Alive and well now in his native Britain. He's quite often on ebay. Forgot his call name. He's a very knowledgable collector. That society started in the early 80'ies. If it is the one ....
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Old Oct 28, 2012, 11:50 AM
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Mistake. Max rpm was 30000
Back in page 127 there's a test report on the 40PS where it was run up to 32,000 revs on the OS pipe with max HP at 28,430 revs. A Bolly pipe gave more HP at lower revs but wasn't as forgiving as the OS pipe.
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Old Oct 28, 2012, 12:05 PM
Bill Mohrbacher, MECA Fox Guy
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If I do'nt mix up the name with something else I believe I used to be a member of that society. In any case it was run by Peter Scott when he lived in Switserland. Alive and well now in his native Britain. He's quite often on ebay. Forgot his call name. He's a very knowledgable collector. That society started in the early 80'ies. If it is the one ....
That sounds like the correct society. Peter had a nice article regarding collectors in the Aug. 1980 MAN.
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Old Oct 28, 2012, 11:11 PM
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Hot little MVVS 21 for R/C AirCombat
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Old Oct 28, 2012, 11:17 PM
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Kyosho Topaz 46
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