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| raynerd:
...actually it has 4 tips so it must be the 2 1/4" but I`ll confirm when I get back to the workshop tonight. |
| kwackers:
My tuppence. Machining the standard is crucial to the engine working properly and not binding. What you should do (IMO) is chuck a piece of bar that's as good a fit to the standard bore as is possible (given it's not machined). Turn down the end and cut a thread then bolt the standard to it, face off the feet so they're flat (oversize) Bolt the standard to a faceplate by it's feet and centre up the bore. Bore it out to correct size and without removing it, face off the cylinder mount - this ensures the bore is absolutely at right angles to the cylinder face (crucial). Next remove the standard and chuck a piece of bar turning it down until the standard bore is a good fit on it (a very slight taper - using a bit of emery will assist here) push the standard onto the bar cylinder end first and machine the feet to size. This ensures the feet are square to the bore. You must get those steps right, otherwise your engine *will* bind. |
| Bernd:
Chris, kwackers has the procedure right. He was able to put into less words than I could. Bernd |
| sbwhart:
--- Quote from: Bernd on October 01, 2010, 12:51:41 PM ---Chris, kwackers has the procedure right. He was able to put into less words than I could. Bernd --- End quote --- I agree. You realy must get things square with these engines and the only reliable way to do this is by using the correct set ups. You have to think of a way to transfer the accuracy of your machine into the job once you understand this and learn some of the techniques the quality of your work improves greatly. One tip with castings:- before you start cutting metal go over it with your digi vernier and try and work out what it will be like and what size it will be after you've machines it, the'rs bin many a job scrapped because the last operation has run out of metal. Stew |
| John Rudd:
--- Quote from: sbwhart on October 01, 2010, 01:29:43 PM --- --- Quote from: Bernd on October 01, 2010, 12:51:41 PM ---Chris, kwackers has the procedure right. He was able to put into less words than I could. Bernd --- End quote --- the'rs bin many a job scrapped because the last operation has run out of metal. Stew --- End quote --- Yayyyyy!!!!........Hands up those of us that have done that... :( Great advice Stew...Definitely some to be be considered.. |
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