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1972 OTM Sokol 2.5cc diesels Cox_ba12




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1972 OTM Sokol 2.5cc diesels Empty

1972 OTM Sokol 2.5cc diesels

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1972 OTM Sokol 2.5cc diesels Empty 1972 OTM Sokol 2.5cc diesels

Post  ian1954 Sun Mar 27, 2016 12:13 pm

Here we have two more Russian engines. One is "pristine and un run" the other (with the replacement unadonised spinner) is used.

1972 OTM Sokol 2.5cc diesels 1972_o10

Although these are both tight and look well made - there is an odd finish applied to the crankcase. It is flaking away on both engines.

The finish reminds me of a new galvanised bucket!
ian1954
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1972 OTM Sokol 2.5cc diesels Empty Re: 1972 OTM Sokol 2.5cc diesels

Post  Ken Cook Sun Mar 27, 2016 1:14 pm

These look like Yin Yan Silver Swallow diesels.
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Post  gcb Sun Mar 27, 2016 6:39 pm

@Ken Cook wrote:             These look like Yin Yan Silver Swallow diesels.


Here is a Silver Swallow to compare:

1972 OTM Sokol 2.5cc diesels Ss247a10  

1972 OTM Sokol 2.5cc diesels Ss247a11

George
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Post  ian1954 Mon Mar 28, 2016 4:27 am

Very similar but the Silver Swallow has a much better crankcase and is better finished.
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