[WWI] 1/72 engine cylinders

[Ray B]

I've tried the punched plastic method for cyclinders it works as long
as you find a decent way to get them all centered. To get the
cylinder head on a rotary engine I engraved deep lines on .15 plastic
card then punched that out too. You can also with a smaller punch
partly punch to represent the valve seats. Then glue in slivers of
plastic rod or wire for the valve stem or stems depending on which
rotary, add a crosswise 2 mm piece of plastic rod you have the cam.
The pushrods are again a different size plasitc rod or wire and you
can use heat stretched plastic q-tips that have been slightly
flattened for the intakes. Sounds like a lot of work but actually
isnt. 

hth's

--- wed317 <wed317 at mchsi.com> wrote:

>  
> 
> "1. A guy in Fine Scale Modeler scratchbuilt some Japanese Z@#$
> engine a few
> years ago by using 2 sizes of discs punched out of sheets of .005
> plastic
> card.  Then glue them into stacks alternating small and larger
> circles until
> you get the correct height.  With a closed cowl Nieuport 17 you
> will not
> even have to worry about doing the cylinder heads as this will
> never be seen
> inside the cowl.  For a N. 11/16/21 you are on your own here!"
> 
> I remember the build you are talking about, it was a world war the
> second
> part Japanese a/c IIRC.  (A great build too IMHO.)  The cylinder
> heads can
> be seen on a Nie.17.  There are two very large exhaust outlet holes
> on the
> cowling, one directly beneath and one right next to it on the
> starboard
> side.  Also, the cylinder heads can be seen when looking at the a/c
> from the
> bottom and behind.
> 
> "2. Another method that I have read about is to use fine thread
> machine
> screws the proper width of the cylinder.  Cut off the end with a
> Dremel
> motor tool and trim them to the correct legnth, then cut off the
> cylinders
> molded on the kit engine and super glue these ones on.  The thread
> angle is
> so fine that it is almost impossible to see the angle on the
> finished
> model."
> 
> Yes, I have seen this too, but for this build I wanted to improve
> what came
> in the kit.  I really appreciate the suggestions.
> 
> Warren
> 
> 


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