Model Engine Maker
Engines => From Plans => Topic started by: geoff5269 on January 10, 2017, 02:59:53 PM
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It's finally finished, it seemed to go on forever. There were a few challenges in this build which made me put it aside for a while but once you have started there is to much work invested to cast it aside. Now I'm very pleased I carried on. It's only when you are finished that you realise which dimensions are critical and how the alignment of all the axis is necessary.
I was wondering what was the advantage of the grasshopper design, I guess it keeps the flywheel within the footprint of the engine and also with the piston at the end of the beam there is more leverage, With a crank stroke of 1" but a piston stroke of 1 1/2" I made the bore smaller than plan at 5/8" which made the engine 7.4cc.
There are lots of hard to get at screws and assembly is best done in a certain order, I have used screws where there should be studs but I like the look of these more and realised it was never going to be a replica anyway so I just coloured it to my taste.
Hope to do video soon.
Geoff
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Beautiful engine Geoff!
Very nice work.
Dave
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Looks great!
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A great build Geoff - gotta be proud of that one :)
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Nice 8)
The advantage of the grasshopper engine was its compact layout. However you will rarely find large grasshoppers as there is a disadvantage with the comparatively large mass of the column in motion.
Jo
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A lovely engine Geoff. I would be very proud of that one. :ThumbsUp:
Regards Terry
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Beautiful finish work on the parts, looks very real.
Gerrit
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Beautiful work Geoff are we going to see a video?..... :ThumbsUp:
Don