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Old 09-02-2011, 06:43 PM   #31
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Default Re: anyone interested in a radial team buid

Pats observations are good. The potty 3 cyl. does look nice and the drawings are well done. With 9 people showing interest, it should break up the work nicely.


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Old 09-02-2011, 06:51 PM   #32
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Default Re: anyone interested in a radial team build

"Re: anyone interested in a radial team build"

Not until I get rid of the day job

I'd be interested to know how the logistics work though...

I did start the design of a three cylinder radial 4 stroke glo motor, that's something else on the to do list! Mind you it is pretty ugly compared to some of the engines here...



Steve



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Old 09-02-2011, 07:03 PM   #33
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Default Re: anyone interested in a radial team buid

An interesting bit of information about the potty 3 cyl. According to the builders notes on the drawing,
most of the metric dimensions given convert to imperial fraction sizes. This should simplify things a bit.

Mike
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Old 09-02-2011, 07:40 PM   #34
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Default Re: anyone interested in a radial team buid

I think the best way to do this is to have someone convert all the parts and make new drawings. Alot of work but it could be done.

Is there something else out there already in imperial.

Elmers #11 is in imperial but would need some creative liberty to the cylinder builder to spiff the up some.
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Old 09-02-2011, 09:59 PM   #35
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Default Re: anyone interested in a radial team buid

I know this was mentioned before but one way of transposing (not converting) is make 1mm equal to 1/16 which effectively scales up a bit or equal 1/32 witch makes a smaller engine. the nice thing about this method is stock size comes out even.
Just a thought. Someone would have to transpose hardware to get everyone on the same page.
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Old 09-02-2011, 10:10 PM   #36
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Default Re: anyone interested in a radial team buid

I just looked at the roster and noticed that some are from Canada and possibly other parts of the world. The dimensions on the print may be native to some builders. The way I see it is the US builders can just suck it up and work in mm's for this one. Should'nt be a big deal because my measuring devices have a little button that changes to metric. I'm all in on the Potty.

Can I make the master and slave rods? How many units are we making?
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Old 09-02-2011, 11:01 PM   #37
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Default Re: anyone interested in a radial team buid

Steve it looks like there would be 10 but that is not comfirmed so we need a show of NAMES (Im not sure of the format of team builds but do we build an extra one to donate for shows)

I dont have any problem of you doing the rods.
As I would like to do the bearing housing with bearings (I can source them out pretty cheap) If that is ok with everyone.

Also who are we appointing team captain on this one??

chris

Oh one more thing,, with the digital world now I myself can work in both metric and standard.
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Old 09-02-2011, 11:04 PM   #38
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Default Re: anyone interested in a radial team buid

Although we use metric in Brazil, I have no problem converting inches to mm and making parts as close as possible to inches dimmensions!
What I think it is important is to decide one plan and stick with it, no matter if imperial or metric. Also I vote for Potty too! A very nice engine!
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Old 09-02-2011, 11:18 PM   #39
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Default Re: anyone interested in a radial team buid

Well Chris . . . . this was your idea so you should drive the bus here. PM Tin Falcon as he has done a few of these builds. He could tell you the best way to do this thing.

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Old 09-03-2011, 12:34 AM   #40
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Default Re: anyone interested in a radial team buid

Chris....

Looks like you have been chosen.

I would like to make the drawings ... in Solidworks with dual dimensions.
Metric would the primary units with imperial second. That would gives the best of both worlds.
If okay I will start today with the Item 18 - Crank Case (I see there is already a small issue with it! )


I'm thinking about doing the #4-Cylinders with #7-Liners and #9-Pistons (since close mating issues).


Pat H.





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