Three Cylinder Radial Engine

Gallery, Projects and General > Project Logs

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bogstandard:
Dave,

It isn't an urban myth, but a fact, you only have to read the literature supplied with the product.

Loctite has thousands of different formulae that never reach market, it is devoloped for a customers personal sticky problems. When I worked in computer peripherals manufacture, the Loctite guy almost had a permanent home in the factory, they were making up special blends for us all the time, even ones that would work in the slightly reduced pressure of a cleanroom.

I too use normal Loctite in an interferrance or press fit, but I make sure at least one of the surfaces is slightly rough, to make sure that at least a little of the adhesive is carried into the joint.

If I want a real non come apart joint, but on metals that would be liable to distort if too much pressure is applied, I actually make the parts a tight sliding fit, then put a very fine straight knurl on the male part (not mine), then put the adhesive on before assembly. At a real push they can be got apart, but only after the Loctite is destroyed by heat, otherwise it is a joint for life.

John

NickG:
Interesting stuff guys.

--- Quote ---put a very fine straight knurl on the male part (not mine)
--- End quote ---

now that would hurt! :lol:

Nick

Bluechip:
Loctite ??

No wish to wander :offtopic: gone to 'How Do I ??' for a new post

Dave BC

sbwhart:
Some more progress

Keeping the mandrell still in the chuck set it up on the mill and centred the mill quill on the mandrell zeroed the DRO.

Then just as with the crank case indexed and drilled the fixing holes for the cylinder.

With most of the key features machined in the cylinder time for a bit of bling.

Again still kepping the mandrell in the chuck it was transfered over to the lathe, then with one of Johns finning tools some fins were added to the cylinder.

I was going to use some 4mm brass tube for the air ways but the gap between the two pipes would only have been 0.75 mm so I bottled out of that and decided to use 1/8" copper tubes, did a lose assembly to see how the bling would look.

That doesn't look too bad, and I was realy pleased how the cylinders holes lined up with the crank case, this was all due to the accuracy I got out of the DRO, without out it I would have resorted to opening out the holes a fiddling arround to get things to assemble correctly.

Cheers

Stew

Darren:
That looks superb :clap:

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