Author Topic: My Easton and Anderson Grasshopper finished  (Read 519 times)

Offline geoff5269

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My Easton and Anderson Grasshopper finished
« on: January 10, 2017, 02:59:53 PM »
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

Offline Dave Otto

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Re: My Easton and Anderson Grasshopper finished
« Reply #1 on: January 10, 2017, 05:28:51 PM »
Beautiful engine Geoff!
Very nice work.

Dave

Offline steamer

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Re: My Easton and Anderson Grasshopper finished
« Reply #2 on: January 10, 2017, 05:35:54 PM »
Looks great!
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Gas_mantle

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Re: My Easton and Anderson Grasshopper finished
« Reply #3 on: January 10, 2017, 05:48:25 PM »
A great build Geoff - gotta be proud of that one  :)

Offline Jo

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Re: My Easton and Anderson Grasshopper finished
« Reply #4 on: January 10, 2017, 05:52:09 PM »
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
Usus est optimum magister

Offline scc

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Re: My Easton and Anderson Grasshopper finished
« Reply #5 on: January 10, 2017, 03:58:02 PM »
A lovely engine Geoff. I would be very proud of that one. :ThumbsUp:

Regards             Terry

Offline gerritv

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Re: My Easton and Anderson Grasshopper finished
« Reply #6 on: January 10, 2017, 06:49:43 PM »
Beautiful finish work on the parts, looks very real.
Gerrit
Programming is like a Hit-n-Miss engine

Offline Don1966

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Re: My Easton and Anderson Grasshopper finished
« Reply #7 on: January 10, 2017, 05:23:37 PM »
Beautiful work Geoff are we going to see a video?..... :ThumbsUp:


Don

Online b.lindsey

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Re: My Easton and Anderson Grasshopper finished
« Reply #8 on: January 10, 2017, 08:15:19 PM »
Excellent Geoff!!  I hope we get to see a video too when you can get around to it.

Bill

Offline kvom

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Re: My Easton and Anderson Grasshopper finished
« Reply #9 on: January 10, 2017, 08:47:42 PM »
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

I noticed that the crank throw is small compared to the cylinder stroke, something that would seem to lose mechanical efficiency.

Offline geoff5269

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Re: My Easton and Anderson Grasshopper finished
« Reply #10 on: January 12, 2017, 09:54:50 AM »
Thanks for the encouragement, I've tidied the workshop and might think about the next project.
Here's the video 
Geoff

Offline J.L.

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Re: My Easton and Anderson Grasshopper finished
« Reply #11 on: January 12, 2017, 12:26:36 PM »
Beautifully done Geoff!
You must be very proud of your engine.
I'm sure family and friends have had a look.  :)
Clean video.
John

Offline Gas_mantle

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Re: My Easton and Anderson Grasshopper finished
« Reply #12 on: January 12, 2017, 10:25:10 AM »
Looks and sounds great  :)

Offline ImIndoors

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Re: My Easton and Anderson Grasshopper finished
« Reply #13 on: January 12, 2017, 02:08:31 PM »
A great looking engine and a very atmospheric sounding runner.  Well done Geoff.
Jim
The person who never made a mistake never made anything.

Offline vcutajar

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Re: My Easton and Anderson Grasshopper finished
« Reply #14 on: January 12, 2017, 02:16:58 PM »
Nicely done Geoff.  Great runner.

Vince