An experimental V-4 wobbler

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DaveH:
Tim,

Opens for me as well in Adobe,

Tim are you using Alibre?

DaveH

spuddevans:

--- Quote from: arnoldb on May 09, 2011, 01:46:13 PM ---I'm really curious how your porting will work and how you want to keep the cylinders on the port faces :D; Guess I will have to wait and see :thumbup:

--- End quote ---

Me too :lol: :lol: :lol:

It's not a big secret, just an unknown quantity. The cylinders will ( hopefully ) be held on by recessed rare-earth magnets in both the frame and cylinders, with just a little gap between the two sets of magnets.

The porting is the standard wobbler type, but the air/steam passages are deep drilled through the frame, then the holes are covered brass tips on the ends of the frame.

I'm glad that others are able to open the pdf's, I thought I was the only one who could see them.

--- Quote from: DaveH on May 09, 2011, 02:03:49 PM ---Tim are you using Alibre?

DaveH

--- End quote ---

Sure do Dave :thumbup:, I've found it really useful. Well worth the $99, or £64 when it showed up on the ccard bill :thumbup:

Tim

Bogstandard:
Very nice design Tim.

I was a bit worried where all the piping was, but as you said, hiding it in the standards is perfectly OK.

Not only am I a ball bearing addict, I also have a fetish for magnets, they are stuck all over my shop if you care to search them out. I even think I have some 1mm diameter neo magnets somewhere, so if you need any, don't be afraid to ask, and if I haven't got the right size, I can send you where they will have, very reasonably priced as well.

John

saw:
This project looks very intressting, I will be follow... :thumbup:

spuddevans:
Thanks John :thumbup: hopefully it'll turn out something like the 3d design :coffee:

--- Quote from: Bogstandard on May 09, 2011, 02:29:05 PM ---Not only am I a ball bearing addict, I also have a fetish for magnets, they are stuck all over my shop if you care to search them out. I even think I have some 1mm diameter neo magnets somewhere, so if you need any, don't be afraid to ask, and if I haven't got the right size, I can send you where they will have, very reasonably priced as well.

--- End quote ---

Funny you say that, I too am fascinated with the neo magnets. And I am also including ball bearings on this build, should be 4 of them on the crankshafts.

Thanks for the offer of magnets, I have got some 8mm x 2mm thick neo magnets on their way off flea-bay.

I had been anticipating using much smaller diameter magnets, but I'm not sure if they would have enough pull to hold the cylinders in place, I too got some 1mm magnets, and some 2 and 3mm ones too. So I redesigned the pivot area to use the wider magnets.

Time will tell if they work or not.

I have been temped to make it a V8 by adding a 2nd frame and 4 more cylinders, but for the time being I am resisting that temptation until I have got the V4 running. Potentially you could add as many of the main frames as you want to make V8, V12, V16, up to a V-whatever.

It is quite a small engine, as a V4 it should be able to fit onto a footprint of just 75mm wide by 85mm deep by 60mm high including the reversing/speed control.

Tim

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