Yet another paddleducks engine build

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boatmadman:
So, this morning I went out to the workshop thinking to have a practise with my shiny new slitting saw, ready to do a cut on the crankwebs.

Not to be! I mounted the arbor and saw, ran it up to the test piece only to find it wasn't running true. Investigations found that the R8 arbor had been machined too long at the top, preventing the taper from engaging properly. >>:-(

So, a call to the supplier and a replacement is on its way.

Meantime, I decided to have a go at the cylinder base and crank base plate.

The picture shows the results.

Ian

boatmadman:
The replacement arbor turned up today, hows that for service? Chronos is the company involved.

So, off to the workshop tonight to finish the crankwebs. First the slit was cut in each web, then holes for the locking screw were drilled and tapped in each web, then, finally, dry assembled, and guess what ---- it rotates :-)) (still needs a little fettling yet though)

Have to admit to being somewhat chuffed, as this is the first time I have attempted anything like this.

Anyway, here are pics, sorry a bit blurred.

Ian

spuddevans:
That's coming along nicely there Ian :thumbup: :thumbup:

I'm hoping to get back into the workshop to continue working on my paddleducks build this morning, I got stalled for a while and had to put it on the shelf before I chucked it out the window!!!

But you are making great progress.

Tim

kvom:
Looking good. If you haven't done so yet, I'd suggest rounding the sharp edges off the crank webs. You'll be pushing on them a lot to rotate the crank, and it's easy to cut yourself. (Been there, done that),

boatmadman:
Well, I spent the morning fiddling, fettling and polishing, and now I have one crank complete, except for eccentrics, and it even rotates! Need a little bedding in, but it will be ok.

Kvom, yup, done the sharp edge bit! Been there got the scars to prove!

Ian

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