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Hi Philip - I dont have an exact answer to your specific govenor but possibly these couple of pics of the linkage on the Waller engine may help you.... There is certainly a similarity so if it is the sort of thing that you are requiring then I can easily scan the drawing of it for...

Hi Chris, I don't think it will matter either way you decide. I usually drill mine as they are turned using a cross slide drilling attachment, the inside having been previously bored out. I just go through with a drill but touch on the opposite face very gently to allow the drill to centre...

Hi Chris, looks like you've done a fine job there, they look very good. Now comes the testy bit - getting a good fit on the piston ;). It's difficult if nigh on impossible to measure the bore to get the size you need and you don't have much piston material to play with but if you turn up a...

Hi Chris, glad that was of use. Yes they are a good little 'get me by' and hold the work extremely well particularly if you want to face something off quite thin. Their limitation is the lack of repeatablity (of concentricity) once taken out of the chuck. Marking where the no1 jaw is can help...

Hi Chris, just remembered I had this pic which should give you an idea of what I mean.... In this case the ring chuck is actually held in soft jaws but thats not essential - ordinary jaws are just fine. By turning the first step as described it helps when locating the short length in the...

Hi Chris, there are a number of options open however the usual expanding mandrel won't be viable as you won't be able to expand it as the screw will be hidden by the backplate. You could do as you say and screw it to a block and hold in the mill or indeed the chuck on the lathe or.. If you...

Hi Chris - glad they worked out okay in the end - doesn't matter how you get there ;) I use a different method than the fixture you and RK are using - more 'universal' but I like RKs idea of the bolt right through and I guess, RK, if the shaft has a threaded end you could use a hollow threaded...

Hi Chris - I haven't used one but I would have thought your tangential tool holder would be okay though it might be a bit large for such a small item. The problem I would say definitely lies in the gripping power of your fixture. You could help matters considerably if you put a very small centre...

That really is a lovely piece of hand finishing Dave - bet your fingers are sore ;) It's a truly super build so far and a cracking subject - looking forward to more progress. Regards - Ramon

Thanks for that info Bill. The spring material I have is the clock spring as recommended but only just enough so had wondered if you had any tips as there's little excess for experiment. Since buying the ceramic tube (quite some time ago) the use of Corian has surfaced and I do now have...

Hi Bill thanks for the response. I began with the ME articles and very soon realised the need for everything to be checked - even the errors and ammendments that Prof Chaddock did at a later date! I bought the book soon after and mainly have used that in conjunction with the articles but...

Aaah Bill - I really didn't need to see this ;D I began one in 1992 and it still has a way to go. I never seem to be able to find the time to put some more work in. Current stage is that would I be able to get the pistons finished and the rings made I could at least assemble it :rolleyes...

Hi Chris - I missed your post and just had a late reminder on email :rolleyes:. Good to see them coming together, they are looking good so far. Re the use of small taps - I agree it is always a bit heart in mouth with small taps but something you might like to see - it's a bit late now of...

oops - just realised I misinterpreted Lucs reply :rolleyes: - call it an age thing Ramon

Hi Luc - Given the very small amount of material that Chris has to play with it's going to be difficult for him to achieve that given the areas quoted are correct - and I assume they are. Perhaps thats why Ron widened the slot on his layout. The only way would be to decrease the area of the port...

Chris, As I'm sure you are aware it's the very top of the transfer port that matters not the centre of where it's drilled. Looking at these two drawings then Ron's version has the hole centre the same relevant to the flange but with a .22 larger hole places the opening point .11mm further up the...

Hi Chris - from what you are stating I'm assuming the wall thickness of the liner is 1mm - I've just spent a while trying to find the drawings on MEN both on the web and on the MEN members disc to no prevail - .5mm wall thickness should be okay and should not cause any problems but if you are...

Vince - my apologies but I have only just become aware of your super engine build. Some lovely machining there and a nicely finished engine you have every right to feel justifiably proud of. What's next - can I tempt you with a diesel ;) - on second thoughts fuel could be a problem where you...

Having lapped the odd hole or two over the years I'd like to say Don what a nice job you have made of your two examples. Being a very shallow taper though it will have to move quite a bit as lapping progresses and the lap wears. The other reservation I have of this type of lap - I have only...

Hi Chris, I'm sure RK won't be put out by that -this is a big step you're taking with little material to play with. M2 screws eh? Well that goes to show how small the engines are you're making ;) - Yes stainless will be fine Have a good weekends machining :) Regards Ramon