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#21
08-08-2009, 05:11 PM
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Are you going to be putting the pistons and con-rods inside each one....
 JOKE.... i know it wouldn't be possible  you wouldn't be able to turn the gudgeon pin TOO TINY :D This is brilliant work here, and like i said before, i will be keeping a close eye on this build my friend 
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#23
08-08-2009, 06:29 PM
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Quote:
Just for the record, B-25's sported R-2600 Wright Cyclones, but I should think the wrist pin was roughly the same size as the PW 2800.... still, as you say, the pin would only be around 1mm.......naaahh, nevermind!! Mike
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#24
08-09-2009, 05:25 AM
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PS i would probably be pulling my hair out with all the repetition you are having to do... you have plenty of skill and patience to see this baby through to the end... my hats off to you my man !
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#25
08-09-2009, 07:54 AM
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Well, for me, it goes a lot easier (and faster) when I can concentrate on a single task, like "cut all pieces out" or "roll and glue pieces", etc. Then it becomes assembly line like. Making the first complete cylinder helped me understand the parts, identify problems, and determine the best sequence of assembly. Front loading the assembly line with that knowledge makes the tedious stuff less, well, tedious...almost mindless.
To illustrate my point, here's the 27 basic cylinders (plus the first prototype) finished this morning:  No too bad. I'll cherry pick 14 "good" ones to be in the front row of each engine. Seamed sides will naturally be facing to the rear so won't be seen, so I'm not as concerned with the poor fit on some of the pieces in those areas. Next is the rocker covers, 54 of 'em..... Mike
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#26
08-09-2009, 09:30 AM
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Those cylinders are a nice day's work (done while Mark and Peter discussed how to make a fully-operational 1/33-scale radial engine in paper). They inspire me to try making the simplified engine of the Peter Zorn Spirit of Saint Louis that I picked up at the Franklin Institute last week -- as the first step toward future (non-operational) paper engines.
I am studying your building philosophy and techniques. Don
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#27
08-09-2009, 10:39 AM
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That's great Don! Sounds like that would be a good kit to ease into this complicated engine making business. And I'm gratified if my ramblings have inspired you (or anyone else here) even a little bit. That's the best part of doing a build thread......
If you adopt an assembly line approach to your modeling, it helps if you have the Bugs Bunny "factory music" playing in the background (it's always rolling around in my head as I build. ):YouTube - Powerhouse Mike
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#28
08-09-2009, 01:59 PM
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Rolling along on the rocker covers. I created a tool by filing down a 3/16" brass rod to the shape of the body piece. Polished it up so glue wouldn't stick to it:
 This I'm using to help keep the side of the rolled part straight while gluing on the top piece, which actually fit's inside the rolled body:   Keeps everything square too. More assembly line work, have about two-thirds done:  Mike
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#30
08-09-2009, 06:29 PM
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Oh geez...now my productivity will drop BELOW zero.
Must. Watch. This. Thread. <S> wily WWII Fighter Plane Profiles
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