Enya .049 glow engine

Hello musterpilot and welcome to the Cox Engine Forum!  

I know a little about your problem with a broken crankshaft.
I had one on one of my earlier Enya .049 that was rear induction. ( veiw the link below: )

https://www.coxengineforum.com/t14494-small-enya-engine-049-with-a-broken-crank-shaft?highlight=broken+crank+shaft

Ken  Enya (Enya Metal Products) will not have any replacement crankshafts as I have tried, even for your engine.
Ther is a Japanese company that can custom make a shaft for you, but it will be at a good cost.
The company is: Mokoken
Here is a link to their website:
Mokoken Labs

I do have some of their custom engines that I purchased from their website (when available)

As for a replacement crankshaft --- it will be a tough one to find?

I've been remanufacturing the Enya engines that I have acquired from Ken Enya and I have been finding out what available stock that he has on hand.
My last order had unsatisfactory parts that were not usable.

see the link below:
https://www.coxengineforum.com/t16899-update-received-my-enya-parts-order-not-exactly-enya-s-top-quality?highlight=enya+10+muffler

Enya is really not producing engines anymore and the availability of replacement parts are getting smaller.

As for the thread size of the crankshaft, it is M4 x .75 Thd (Japanese Industry Standard -- JIS)
JIS was used in Japan until the late 1980's then they changed to the standards used today.

And the smaller screws on your engine.
They are M2.3 and 4mm long

Below are the instructions for your engine: (Japanese and translated)







Unfortunately, Enya doesn't have a "long" nut for your .049 engine like they do for the Enya .06 /.08 and .10 engines.
Maybe, you could make one or get one made?

Here are some of the twenty-seven of my .049 I have completed:





Photos of some out of the box / plastic case:
The one with the plastic venturi and muffler I purchased from Mokoken Labs (about $203.00 with shipping)