Nick Welburn | 16/05/2021 18:13:32 |
136 forum posts | I’ve made my crankshaft and piston for the 10v today. I’ve got a couple of questions. I guess it needs a hone. But how? Secondly in a moments stupidity I started on the block that the piston rod goes into. I decided to start by milling the top and bottom flat. To do this I cut the casting bar off. I now realise I needed that to use that to turn the outside diameter down. Any cunning ideas for this?
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Former Member | 16/05/2021 18:45:19 |
1085 forum posts | [This posting has been removed] |
JasonB | 16/05/2021 19:48:25 |
![]() 25215 forum posts 3105 photos 1 articles | The cheap "brake cylinder hones" on e-bay will do, probably have to be the two stone one on that 3/4" bore. You could tap the crosshead for the piston rod and screw it in then use the rod to hold it by in a collet, split bush or 4-jaw so the rod runs true while you turn the OD to fit the trunk guide. Bore and finish the trunk guide first then make the crosshead guide to fit |
Nick Welburn | 16/05/2021 21:11:58 |
136 forum posts | Will a 5ba thread hold the part while I turn it? Maybe if I drill and tap deeper into the block and super glue it? |
JasonB | 17/05/2021 06:59:28 |
![]() 25215 forum posts 3105 photos 1 articles | With light cuts and a sharp tool it will, you can always bring up the tailstock ctr for added support, superglue won't make much difference. |
mechman48 | 17/05/2021 09:59:58 |
![]() 2947 forum posts 468 photos | 'The cheap "brake cylinder hones" on e-bay will do, probably have to be the two stone one on that 3/4" bore.' +1, Exactly what I have, & used on my !0V, works a treat & not expensive. George. |
Nick Welburn | 17/05/2021 20:32:41 |
136 forum posts | Ok - sorted that bit and learned not to start cutting without a plan for all operations! Will get a hone on order quick zip with the dremel and a polishing pad has helped considerably. May try the dremel with some valve grinding paste and see what does. |
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