Another Paddleducks build log

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raynerd:
Nice job Tim.

With all these build logs and Bogs notes, I`m seriously considering this for my next project.

spuddevans:
Thanks Chris :thumbup: even though I have had a few self-caused difficulties on this build, I can still whole-heartedly recommend the Paddleducks build. I have really learnt a lot doing this build.

Go for it Chris, you know you want to :poke: :D

Tim

spuddevans:
Just a little update on this.

I finally got some liquid gasket stuff, so I disassembled everything, thoroughly cleaned each part, and then re-assembled using the gasketing stuff.

Amazingly when I re-assembled it all and re-timed the valves the engine turned over by hand just as smoothly as it did before I broke it all down. I had been expecting to have to jiggle about and make fine adjustments in order to get the sweet spot on all the parts that have some adjustment.

Anyway, the engine is much quieter in running ( much less hiss ), and so I set about running it in some more. I hooked up my (slightly) larger air compressor (12L reciever, doesnt sound larger, but my other compressor is an airbrush compressor with a 3L tank!! ) and let it run on about 30psi. Due to the small size of tank, and the fairly thirsty nature of my build of this engine at this time, the compressor was kicking in a little too often for my liking, so I would run it for about 5 mins and then let the compressor rest for 15-20 mins while I did something else, and then ran the engine in the opposite direction.

I kept this up until I reckon I had about 30-35 mins running time on the engine ( all the while feeding it with a little oil each time I rested the compressor )

It was then running a lot free-er freeer freer ummm :scratch: , looser. Even to the point that I can turn the engine over just by gripping the crankshaft ( an oily 5mm steel rod ) with my fingers. Compare that to when I could hardly turn it over gripping the flywheel!!

Now I can run it off my little compressor which has a more accurate pressure gauge, and it will quite happily turn over on 7-8 psi in it's favored direction, and 12-13psi in the opposite direction.

After a little more running I'll take another video of it and post it up.

Then the blinging will have to wait for a little while as I have started on my CNC conversion of my mill. ( yea yea, I know. I will be starting another project log about it soon, with some pics too cos :worthless: )

Tim

Brass_Machine:
Tim,

Haven't looked in awhile, but looks like you have it running now. Would like to see another video of it now that you have the liquid gasket.

Nice job!

Eric

NickG:
Tim, you've cracked it there then - sounds great will look out for the video! :bow: :beer:

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