Engines > From Kits/Castings
My A J Reeves Bolton Triple Expansion Engine
simplyloco:
--- Quote from: Jasonb on November 02, 2022, 07:12:17 AM ---Surely the "belly" is just the result of the draft angle needed to get the casting out of the sand. Also visible in the machining of the first surface.
--- End quote ---
Agreed.
Vixen:
So how did you stop the raw casing from rocking, due to the draft angle 'belly', when you faced off the first side? Or did you not notice the 'belly' till later? :thinking:
Mike
simplyloco:
--- Quote from: Vixen on November 02, 2022, 09:43:57 AM ---So how did you stop the raw casing from rocking, due to the draft angle 'belly', when you faced off the first side? Or did you not notice the 'belly' till later? :thinking:
Mike
--- End quote ---
It was bellied on both sides. After cleaning up both sides with rough emery on the big surface plate I mounted it at the edges on two pieces of 1/2" HSS: there was no rocking. In my post I should have said there was a 30 thou belly instead of 'I found a 30 thou one'..
It is all very even and predictable.
Vixen:
--- Quote from: simplyloco on November 02, 2022, 10:52:08 AM ---
It was bellied on both sides. After cleaning up both sides with rough emery on the big surface plate I mounted it at the edges on two pieces of 1/2" HSS: there was no rocking. In my post I should have said there was a 30 thou belly instead of 'I found a 30 thou one'..
It is all very even and predictable.
--- End quote ---
Ah! I can now see the two pieces of 1/2"HSS; a good way to prevent rocking.
Looks to be some good quality gunmetal to machine.
Enjoy
Mike
AVTUR:
John
I have recently placed a number of orders on Reeves for castings. Two of these were delivered in stages. In both cases the "missing" castings arrived within a month without any reminders being sent.
I think, in general, the quality of the casting are good except for a few chilled spots in iron castings. I believe these are to be expected (however they are annoying).
AVTUR
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