puddleduck engine build

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grayone:
That blue stuff is for checking things like metal bearings and is not intended to dry - have made the same mistake :D

mzt:

--- Quote ---That blue stuff is for checking things like metal bearings and is not intended to dry - have made the same mistake :D

--- End quote ---

Engineers blue? Me too!

And when I got a big 500cc bottle of the proper one, the brushes usually got dipped too much or not enough.
When I upset that bottle on the table (drawings, trousers, chair..) I decided it was time for an homecrafted solution

No more brushes with too much or not enough ink, no more cleaning of them after use.
Still easy to upset, tho.

Marcello

ParCan:
Cylinders assembled.
Still a bit sticky in places but nothing a bit of use will remove.
Pistons seal well

The washer is my tool for drilling the Cylinder caps and Packing glands.

1 10mm washer. Put in 3 jaw chuck.
With a Spirit level get 1 chuck jaw horisontal.
Scribe a mark on the washer with the lathe tool. Repeat 2 more times.
Mark a circle with dividers.

Drill 2.5 mm in 3 places

Crude but it worked for me.

Made the bearing blocks today.
Had to make em out of 3/4 square bar which is only 19mm. Close enough (I hope).

They were not hard to make.
Take bar. Mill to 15mm thick.
Put in a 4 jaw and center for the 5mm hole.
Drill 4.5 mm and ream to 5mm

Part off 2 at 10.5mm thick. Make a note of which way around they go.
Re drill / ream for the 2nd pair.
Part off the next 2 and repeat (I made 6)

Mill both sides to get to 10mm thick.

Drill the holes for the base plate and screw down as they came off the material.

Lapping was a breeze - took maybe 5 mins and the shaft spins freely.

Alex.

ParCan:
Oh Bother !

I made the beraing Blocks upside down !
I can see there is no chance with getting away with that and whilst my bits are not the best - this is a learning thing for me, I'm not even going to attemt to turn em over.

I think what I'll do is once this one is complete and I have a Mill I'll make another one - and make it nice.
I am slowly but surely working out Cutting speeds. Things have been far to slow esp. on th eMilling side.

Alex.

Brass_Machine:

--- Quote from: ParCan on May 08, 2012, 03:40:39 PM ---...

I made the beraing Blocks upside down !
I can see there is no chance with getting away with that and whilst my bits are not the best - this is a learning thing for me, I'm not even going to attemt to turn em over.
...

--- End quote ---

I have done that! In fact, I did it on a team build for an engine. I didn't realize it until I sent out 10 of them to other people :doh:

Still, you said you are learning right? Doing a pretty good job of building it.

Eric

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