If you use metal motor mounts one of the backplate mounts would work.Maybe Henry still has some.

Brad

Henry Nelson himself is the source of Nelson parts - installed !!

I guess I could be proven wrong (again) but I've never heard of anybody stockpiling them.  

My advice and personal practice is to send the engine to Henry and let him properly fit the necessary parts.  

speeddad

Parts for our old toys are getting hard to find.

As a last chance you might try welding it. Have done similar type repairs with good success.
Not easy but if you gota save it you gota save it!

This is how I would try it with welding.

Need to make a snug push fit aluminum round bar mandrel to insert into back plate opening and up into rear bearing seat so that distortion and shrinkage are minimized.

If possible place cylinder section in water while welding.
Mandrel will help control temps also.

Find someone good with tedious heliarc work. Someone that will let it cool if needed and who's welds have zero porosity. They are out there just have to find them.These guys can usually do good magnesium repairs as well.
Big Industrial Fab shops is a good place.

The lugs need not be welded back on as it can be built up with the weld.
A milling machine will be needed to re make the lugs. Can be done by hand with a lot of measuring and time.
Remove all stress risers possible with dremel or round files.

Should be able to relocate bolt holes from airplane as a pattern.

Leave the mandrel in until all work is finished.

If mandrel is stuck heat case with propane torch evenly to about 200deg and it should fall out.
spit boils off at 180 or so.

If all went well Bearing bore should be ok and not to tight on bearing.
If it will drop in when heated as above it should be just fine. Light press by hand when cold is almost to loose.
Can loosen fit by careful scraping and then polish

With any repairs on stressed parts keep an eye out for cracks or other signs of failure.

Hope this helps you man!

David

Hey Howard
This is time consuming tedious work.
Make sure you are THAT welder. At worst $50 for That welder.

I Tig and gas weld when building formula car frames and roll cages and non structural aluminum.
I am not THAT welder.

All structural aluminum, magnesium repair or construction = big fab shop where they usually have at least one guy welding these materials all day every day. This is key to making it work.

I use Hayes MFG about 30 miles from here.

With the equipment you have you can fix this thing. Make super light cuts---forever until you get there, this will help avoid pulling it out of fixture and doing damage.
Keep checking often to be sure it is tight in fixture, and very very often when the High/Low of the weld is making chatter and bumps and such.

David

That might be that welder!

If you have some real junk cases might warm the torch and setting up on that just before actual welding of part.

Was thinking about this the other night.
If you do not already have an airplane built to fit the original mount holes might want to make wider lugs with the holes moved out so that a bigger radius can be left where new lugs meet the case.

Might also want to make the lugs thicker on the "top", The side that is not in line with the crankshaft center line.

Keep us posted on progress!

Take your time, triple check twice! you only get one shot at this.(you knew this!)

David

       I can testify for Scott's work as he recently repaired a speed pan for me. The repair was practically undetectable. I'm currently using it now and I was very happy with his work . Ken

Looks like we have found "that Welder"
Er Ah....He found us!

Thanks Scott, Will save your info.

Can you handle larger mag casting? Wheels, Bell housing/gearbox and uprights?

David