Holt 75 from Germany

[gbritnell]

I make my electrodes from music wire. I make the threaded bushing for the end and soft solder it together.  When the electrode wears I unscrew it from the insulator,  heat it up and pull it out a little then refit by grinding the gap back to size.

[michelko]

Hi guys,
made some progress on the exhaust. Same procedure as on the intake.
Still have to do some cosmetic to the header an soldering the pipe.

That fresh cut brass looks awesome

Regards Michael

[Admiral_dk]

Amazing result (again) - but how are they mounted onto the Engine ?

Per           

[michelko]

Hi Per,
i hope the pics give you an idea. between the ports are 3mm Studs located. There will be a clamp that presses the manifolds onto the heads.

Michael

[Vixen]

Hello Michael,

Those two manifolds look so good, a work of art.

Do you plan to bead blast them and then nickle plate them? That would really put the icing on the cake.   

If you want, you could post them to me in the UK and I could do the bead blasting and nickle plating for you.

Cheers

Mike

[Admiral_dk]

Thank you for eplaining and showing 

I feld suspicious about the 'curves for the Studs' and thought about bolts - but I didn't guess right after all ....

Per     

[michelko]

Hello Michael,

Those two manifolds look so good, a work of art.

Do you plan to bead blast them and then nickle plate them? That would really put the icing on the cake.   

If you want, you could post them to me in the UK and I could do the bead blasting and nickle plating for you.

Cheers

Mike

Hi Mike ,
many thanks for this generous offer.
This community is realy awesome
But i think i will blacken those manifolds.
Think i will try this Pprodukt: https://www.bengs-modellbau.de/magazin/tutorial/schwarzbeize-bruenirbeize-schwefelleber-messing/
Also some other parts like the heads and the cylinders.

Regards Michael

[Vixen]

Hello Michael

Yes, Black manifolds will look very good as well. 

Mike

[michelko]

so the exhaust manifold is ready. After some hours of filing and sanding it came out great.

I will buy some brass blackening stuff to hide the brass colour.

Michael

[gbritnell]

Looks absolutely beautiful!

[Admiral_dk]

A result to be proud of 

Per     

[michelko]

Hi guys,
another part ready.
I made the starter clutch for use with an cordless drill.
It has an one way bearing in it for easy release after the engine is started.

Michael

[michelko]

and here is a short video
<a href="https://www.youtube.com/watch?v=gAlIUoWENRU" target="_blank">http://www.youtube.com/watch?v=gAlIUoWENRU</a>

[Roger B]

Great to see it assembled and turning     

[michelko]

Hi guys,
today was a very productive day.
I did the flanges for the cooling system, made an adapter for the carburator, did the distributor cap and the distributor finger.
Unfortunatly i forgot to make some pics.

After i finished the parts i Could not resist todo a quick and dirty test run.

Its unbelievable , it started immediatly.

<a href="https://www.youtube.com/watch?v=HixujVBwZCA" target="_blank">http://www.youtube.com/watch?v=HixujVBwZCA</a>

I am proud like hell

While turn it over by hand i noticed its willing to start so tested the hand start.

<a href="https://www.youtube.com/watch?v=PBzknTpvS9M" target="_blank">http://www.youtube.com/watch?v=PBzknTpvS9M</a>

Because of the missing cooling system this little bastard has only a couple of seconds run time.

RegardsMichael