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Member postings for Quentin Reidford

Here is a list of all the postings Quentin Reidford has made in our forums. Click on a thread name to jump to the thread.

Thread: Eccentric Question
29/09/2013 18:45:20

Thanks for your help - I discovered that when I shortened the grub screws I hadn't put back the point! _ so that certainly didn't help the situation.

Stew, yes the sheaves are tight when it's all bolted together - I'm not sure how to resolve the situation however, I do not want to remove the eccentrics so pehaps I need to skim the inside of the sheaves - so much for trying to make things a good fit - perhaps I should have gone sloppy fit.

Richard, it's a Stirling Single in 5"

Consensus of opinion seems to be just edging towards grub screws - possibly with a drill tip hole in the shaft when all is set.

Edited By Quentin Reidford on 29/09/2013 18:45:56

29/09/2013 10:56:27

I am currently engaged in the frustrating exercise of setting valve gear and I have the problem with the eccentrics which keep moving from their set positions on the crank shaft.

I have followed the drawings in that I have used two 4BA grub screws per eccentric but I think because the socket head is very small I cannot get the business end of the screw to bite into the MS shaft with any lasting effect.

My question is - do I position the eccentrics and pin through the shaft using roll pins? I have only seen reference to using grub screws but surely once the eccentrics have been located on the shaft - are you really likely to want to move them?

Thread: Model Engineer Survey
26/04/2011 14:41:52
Is an electronic version of the survey available?
I would rather not scan the survey but will do that if it the only electronic means available.
Thread: Riveting
28/10/2009 21:02:12
I'm just going to source a suitable strip of metal, in my case 3/32" , drill a 1/16" hole in a corner and poke a rivet through the joint and the plate and snip off the excess! 
28/10/2009 20:47:14
Jason,
 
Thanks for that information, does it apply to all diameters ?
I'm using 1/8" and 1/16" rivets?
 
 
28/10/2009 20:32:55
Can some-one please tell me how much a rivet should project from the face of the metal in order to form a correct round headed head - if you see what I mean.
Using two snaps there must be a formula such as one or one and a half diameters projecting from the face of the steel plate to hammer down into a snap to form a perfect head - I have searched and searched but cannot find this critical dimension anywhere. Any advice would be most grateful before I make a further mess  of my current project.
 
Thanks in anticipation 
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