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john clayton

Fiat 18bl at Stow Maries Aerodrome

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'Next I made a thick brass plate to cover everything and soft soldered and screwed it in place. I know it does not look original but I don't ever want to take this apart again.'

 

'Cut the oil groove with carbide burr in a Dremel. Question .Is to Dremel a verb? All my friends use it.'

 

Actually it does look like an original repair. One of our gearboxes has something very similar but not quite so neat!

 

Whatever you call it, the Dremel is a very useful tool for this kind of thing!

 

Keep up the good work. It is great to see how someone else does it and we are all looking forward to seeing it on the road.

 

Steve

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The inside of the diff. The oil has dried out a bit.013 (3).jpg

 

This is the diff lock which is operated by a lever on the outboard end of the RH drive shaft where it is bolted to the chassis . The dog clutch is destoyed and the splined sliding section has been hammered into the hlf shaft to stop it moving.Proper engineering! I don't need the diff lock but i might have a go .019 (3).jpg

 

 

 

 

 

 

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An easy way to make a one-off internal spline is with CNC wire spare erosion. (clearly unless you have the machine that would be a bought-in job). If you supply a machined bore the wire-eroder can align to that and cut the grooves pretty quickly.

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The bearing housings for the gear shafts are very loose. I had intended shimming them but the holes are oval by up to !.5 mm. For the input shaft I am going to try to make a bolt in fixture using my miller boring head and some plumber block bearings to bore out two or three of the seats but I can't get to the seat (140 dia) for the output shaft to the crown wheel driving pinion . This has the worst ovality .Is there such a thing as corrugated shim? I am sure that I have seen it on a tractor forum. Designed for such a problem and using lots of loctite? Or was I just imagining it? 012 (5).jpg

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Is there such a thing as corrugated shim?

 

http://www.euro-bearings.com/tol1.htm

 

My dad has a horizontal boring machine, exactly the right machine for the job. The only problem is that it is in Yorkshire. (and generally buried under other stuff)

 

https://picasaweb.google.com/lh/photo/lorjlRbUi9B2VQy0Cd0KcNMTjNZETYmyPJy0liipFm0?feat=directlink

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I was just reminded of this machine. How is it going? 

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16 hours ago, andypugh said:

I was just reminded of this machine. How is it going? 

Yes, I had forgotten about this one as well and will be very interested to know how it is going.

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