IHC Titan 50 HP, 2 cylinder Doug Kelley, European version

[Craig DeShong]

Superb job on the crankshaft and counter weights Achim. 

Following along.

[fumopuc]

Hi Craig, thanks. Good to know you are following along.


Crankshaft seems to be nearly complete now.
The fresh etchant arrived, so it was time to try a beauty treatment.
It came out with a deep black surface.
And other spin with both flywheels, driven and accelerated by the cordless drill.
[youtube1]https://youtu.be/eJ1n7A6HlkA[/youtube1]
The only thing missing here is the drive gear for the cam gear train, I will do it later when the camshaft bearing brackets are available.
A disassembly of the entire crankshaft will not be necessary there, only one flywheel and bearing block has to be removed for pushing the gear and a little spacer on the shaft.
Next to do, the con rods.

[gbritnell]

Outstanding work on your engine!

[propforward]

Stunning! Really excellent work.

[Kim]

Achim, I love the color of your crankshaft!  What etchant did you use for your 'beauty treatment' 

And the crankshaft must be straight - it spins QUITE well! 

Kim

[Roger B]

Splendid     

[fumopuc]

George, Stuart, Kim and Roger thanks for visiting and the friendly words.

[fumopuc]

Achim, I love the color of your crankshaft!  What etchant did you use for your 'beauty treatment' 

And the crankshaft must be straight - it spins QUITE well! 

Kim

Hi Kim, I do use a product from Saemann Ätztechnik, it is a small German company, no web shop.
So for your side of the pond maybe not the ideal supplier.
Their main business is to make very small parts.

[fumopuc]

Hi everybody, I will try again to catch up this thread.




The con rod bearings I have made earlier are a little nightmare.
I haven done a failure by the converting into metric dimensions and second there was a mistake made at the set up and flip over at the mill too.
So the design and CAM had to be reworked and a new set was made.
Now it looks and fits much smarter.
Next part to do, the small eye for the con rod.
tbc......

[fumopuc]

... all jobs done by the CNC mill.
I have made one more, so maybe I can make a sample part from all scrap so far.
An old available jig could be modified easily for the soldering job.
One rod at the lathe.
And all together at the fixture, ready to heat it.
Brazing job was fine, without any issues.
tbc.....

[fumopuc]

... one angle of the rod to the plate is not as it should be, 90°, but I have to live with it now.
Some blackening and it does fit nicely into the overall picture now.
My two cents.


Next to attack, the cam drive.

[Admiral_dk]

Never funny to discover that you have made a blunder in conversion or other kind of adjustments    The new parts look fine, but the proof as you know - comes when you have the pistons installed and it all goes round without any bindings - I really hope this will be the case 

Per

[fumopuc]

- comes when you have the pistons installed and it all goes round without any bindings - I really hope this will be the case 

Per

Hi Per, I do hope this too, but I am confident now.
Some times in CAD it looks like "a big gap", or still "very much material available".
What will be nearly never a problem if it is scaled by 50 at the screen. 
The original design of Doug Kelley was tight there already or better described with on the edge, my first one was simply over the limit.

[Kim]

Great looking con rods, Achim!  You're making good progress on this engine! 

Kim

[fumopuc]

Hi Kim, thanks.
There is more progress already, but I am behindhand with the posting.


Next parts which had been made easily by the CNC mill, the camshaft brackets.
I am using metric Modul 0.7 gears for the gear train here, so a slight modification of the main bracket was necessary to compensate the changed position of the idler gear.
tbc...