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Re: 3D printers [Re: kevin roberts] #754221 10/27/18 5:34 am
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DMadigan Online Content
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Rough finish causes more turbulence so a thicker boundary layer buildup. If you are trying to re-energize the boundary layer to keep flow from separating then turbulence is good. Here it is just a transition from the plenum into the engine.
KR - that is standard PLA. I am using it for the flow bench so gasoline solubility is not a problem.

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Re: 3D printers [Re: kevin roberts] #781533 08/15/19 2:12 pm
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Mark Parker Online Content
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DM what sort of flow do you get from T150-T160 modified heads? I can get around 200cfm @ 28"W from the A65 head. I have a 32mm small port A65 head giving 160cfm, but fitting a 32mm round slide AMAL or Mikuni restricts it, the Mikuni is worse because it has a long bell on it, I was wondering why it was worse than the AMAL, just taking off the air hole casting on the entry of the AMAL and blending it made it flow better, I think about 4-5cfm.

I'll try a short bell on the Mikuni and see what I get through it. Lectron carbs flow really well, they increase flow, but I don't have a small one, only old 38mm ones. I think my son in law is getting a flash new 3D printer smile


mark
Re: 3D printers [Re: kevin roberts] #781620 08/16/19 4:00 am
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Jerry Roy Online Content
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In the interest of less time and plastic, (although, from what you say, the cost of the plastic is not a deal beaker) could you make a short stub collar that bolted on, and the various lengths of plastic horn could be hose clamped to the stub. It would save time with the nuts when you changed lengths.
Just a thought.

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