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Old 08-20-2012, 02:49 PM   #31
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I'll stick my hand up for the cyl head and valve gear, if that works for the group, but I'm
flexible on this.
Materials list would be useful too, or do we as a group
decide what materials to use.
Is there any written detail on this engine available anywhere?

Dave


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Old 08-22-2012, 11:59 PM   #32
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Have'nt done a group build before. Maybe ease my way in with the base & frames etc. if OK

Leonard in Gippsland


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Old 08-23-2012, 08:41 AM   #33
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A little update - I can do the gears in 38/19 x 40 dp easily enough after all. And now I've got my personal stack out of the way I might do a couple of trial pairs while everything is still set up.

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Old 08-23-2012, 09:04 AM   #34
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Thats an impressive stack Tel!
enough for a five speed box

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Old 08-23-2012, 09:44 PM   #35
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So, here are my suggested part assignments for each of us:

Tel- Gears and maybe carbies
warranator- Crankshafts, cams, conrods, cylinder, crankshaft, and timing gear supports, maybe the brackets for the fuel tank
hi speed scrap- Cylinder heads and valve gear components
Herbiev- Bases, bearing bushes and pushrod supports
Myself- Flywheels, fuel tank support columns, maybe the cylinders and pistons

As far as materials go, I would suggest making components requiring a lot of milling to be made from aluminium, cast iron for the cylinders and piston rings and steel or brass for the flywheels and gears, but I'm open to suggestions.
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Old 08-23-2012, 10:48 PM   #36
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Yeah, I should be OK for the carbies, once I get my head around 'em.

So, we are looking at 6 engines total, or more?
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Old 08-24-2012, 04:27 AM   #37
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No worries. I'm on to it. No "honey do's "this weekend.
Unless she bribes me.
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Old 08-24-2012, 07:35 AM   #38
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As I read the plans, they call for a spark plug with an M5 thread? Anyone addressed this yet. Easy enough to do in M6 but M5 is getting way down there!

Also, the timing gear supports - I'll need to establish the correct centre to centre distance (by making and trying some gears) before they can go too far forward.
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Old 08-24-2012, 09:17 AM   #39
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Could we possibly re-design to use an M6 or 1/4x32 plug? Also, what does everyone think of my recommendations for materials? 6 engines sounds about right to me. So, do we need to work out anything else before we can start making our parts?
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Old 08-24-2012, 10:47 AM   #40
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I think either would work in OK. I'd be good for doing plugs in either M6 or 1/4 x 40 tpi as I don't have any 1/4 x 32 gear. Can I suggest that the M6 might be the better option.


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