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Merlin Engine Crankshaft

I have a Merlin Engine crankshaft that I am looking to sell. The questions are:

Where and how to sell it?
Is there much appetite for this sort of item in the collectors market (and possibly the restores market if its airworthy)?
I suppose also how much these things tend to go for depending on quality?

Details of crankshaft:

– pre 100 series
– HYKRO Steel
– with its spring drive coupling and propeller pinion drive coupling
– main journals of varying sizes (rear journal is standard size (3.349inch); crackpin journal all seem to be within 0.004inch)
– stamped HH3605
– some rusting

Any help or advice welcome.

Thanks all.

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By: Fournier Boy - 12th January 2017 at 08:50

Sounds like it’s certainly had some use, RR limits for Journal wear is around about 0.0015″ and same for ovality. There has certainly been some lapping going on if you have up to 0.004″ difference in journals. To determine if it’s airworthy will depend on journal condition, size, condition of webs, weights, internal condition, and a pretty rigorous and expensive NDT inspection. Recently bought a fairly rare Late Griffon crank for £600 which measured out within limits and was complete with sludge traps too. Was a fair price as will require a lot more time and money spent on seeing if it is airworthy. If yours requires a fair amout of rework, it’s probably best as a lamp stand!

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