T.K. Klapton Commando 4 cilinder (2 x 850 Siamese)

MichaelB said:
I'm all for thinking outside the box.
How are the engines tied together?
What am I missing?
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Look at the pics (poor quality tho sadly, posted below)… it looks like he made his own V4 crank cases FFS :oops:. Pretty impressive!

Bikes like this are often really interesting in that some awesome engineering is hidden underneath sloppy aesthetics and finishing off. It’s like the builder kinda ran out of enthusiasm or patience towards the end. Millyard is the exception to this rule of course !

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I saw this way back in 2019 at the International rally in the Netherlands. It looks different compared to what i remember. Now it looks a far better finished item.
I bet its still very heavy
 
Fast Eddie said:
Look at the pics (poor quality tho sadly, posted below)… it looks like he made his own V4 crank cases FFS :oops:. Pretty impressive!


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Without being too presumptuous, I think @MichaelB is asking how the cranks' rotation are tied. The terrible pics of the internals don't answer many questions. Maybe gear teeth are cut into the flywheels? The crank ends certainly don't seem tied. That would open a dozen #10 cans of worms though...

No matter how it's done, it's a wild way to get only 80 horse power.
 
Fast Eddie said:
Look at the pics (poor quality tho sadly, posted below)… it looks like he made his own V4 crank cases FFS :oops:. Pretty impressive!

Bikes like this are often really interesting in that some awesome engineering is hidden underneath sloppy aesthetics and finishing off. It’s like the builder kinda ran out of enthusiasm or patience towards the end. Millyard is the exception to this rule of course !

View attachment 124551View attachment 124552
Click to expand...
I saw that and was impressed. Wasn't sure if he cast them or welded them together. Regardless, a tip of the hat to him.
Doesn't appear they tie together on either side. Don't see any gear or chain drive.
One of the engines would have to be reverse rotation which would mean a custom cam.
Again, I give big Kudos for effort, but makes me wonder if it operates in 4 cyl or a very HEAVY Twin, if it runs at all.
Be great if someone has more info on this..
 
Fast Eddie said:
The pictures are baaad… but if you zoom in, I believe you can just about make out gear teeth on the outside of the flywheels…
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OK, fuzzy picture with fuzzy eyes. It does look like gear teeth. That would explain the reversed engine.
So we have full circle flywheels with teeth, Custom case with precision line boring, Norton cranks whipping around on Superblends?
What could go wrong?
Not trying to pick it apart, just abservations.
I give him credit and would love to see it run.
 
Given that one engine will always make more torque than the other, one crank (flywheel) will be trying to "climb over" the other one.
This will add to the "whippiness" woes, contributing further to one of the weak points of these engines.
I wonder if it will prove disastrously so?
Cheers
 
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