Yesterday I managed to make a start on the flywheel, and got one side shaped (to a fashion
), and today I bored and reamed the 5mm hole for the crankshaft, then remounted to machine the other side, centred it using the 5mm hole as a reference and then shaped the 2nd side. ( I was so excited about getting so close to completion I forgot to take any pics of these parts
)
I then turned a some 6mm brass rod to a close fit for the flywheel, and threaded the end M5, and mounted the flywheel to it to clean up the rim and make sure (hopefully) that I dont have a wobbly flywheel.
After that I drilled and tapped the flywheel for the setscrew
I then turned to the air-intake-to-aquarium-type-tubing-adaptor-thingy. I used the same 6mm brass rod and turned some down to 4mm and then threaded it M4 and then bored it through with a 2.2mm bit
Then after some jiggery-pokey with a parting tool,
it was over to the spin-indexer to make a nut-shaped bit.
At this point I did a quick mock-up of all the parts and positioned the crank for transferring the hole position from the exhaust of the frame to the cylinder. Then after removing the indexer from the mill and clamping down the vice, I drilled the cylinder with a 1.6mm bit.
I then found a spring that was about the right size and assembled all the bits together, and here's the result.
( notice the immaculate chatter on the flywheel )
The other side
Imagine my joy, now to get it running. But how? I have a little air compressor, but no way to attach the length of 3mm (id) tubing to it
So I decided to build an adaptor. I just copied the connector off one of my air-nailer, and bored a 4mm hole up the centre.
I then made another air-intake-to-aquarium-type-tubing-adaptor-thingy as above, except I haven't milled the nut-shaped-bit on it yet as I had to come in to make me grub, and that's all I got done.
So that's all I've got for you today, hopefully I'll get it running in the next couple of days and then I can post up a video for you all to
laugh look at
Tim