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| Potty Over Crank Wall Engine |
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| raynerd:
lol, I can see it all ending up a sitcky mess of solder with a permenantly closed valve :lol:! Anyway, thanks both of you for the reply. Keep up the good work with the engine. Chris |
| NickG:
Chris, Not sure whether it'd be easy at this scale - but on my clio the spindle had a slot in it that the butterfly went through - if you did that you can sort of get it to self align by opening and shutting it with the butterfly in the slot then you could drill through to get the right location, take to bits and tap for a screw. Bit fiddly though. Stew, why is the butterfly an oval shape? I must have missed something obvious! Nick |
| Divided he ad:
Nick, does the one in the clio not have a slight oval shape to it? Many of the ones I've seen have a slight oval shape, allowing return springs to pull the valve shut tightly when the throttle is released. if it were round it would just open in the other direction when the spring pulled it. Just mu 2 p's Sorry we didn't get to talk more at the show too... Well, not at all really ::) I turned around to see if you were still there and you'd gone. So had loads of the others! Could have talked RS's :) Ralph. |
| sbwhart:
--- Quote from: NickG on May 15, 2011, 08:49:03 AM --- Stew, why is the butterfly an oval shape? I must have missed something obvious! Nick --- End quote --- It doesn't sit square across the bore it sits at a 30 deg angle so that it shuts tight. Stew |
| sbwhart:
Completed the bracket for the governor. Turned up a length of bar and stuck a roughing drill down it to reduce the mass, then mill a couple of slots to take the bracket. Then silver soldered the two bit together then set up in the mill found the centre with the coaxial indicator, and drilled it out 9.5 mm followed by a 10mm reamer. Then cut away the unwanted bit in the middle and fixed the ball bearings in place with loctite bearing retainer, made a couple of brass spacers to take up the clearance in the bore. Drilled and pegged the flyball fixed end to the shaft so you get this. This is how it looks on the engine. I think it would be better closer to the fly wheel but there is too much gubbins around the front of the cylinder to mount it. Stew |
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