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Chatterbox / Re: Not a model engine
« Last post by Jo on Today at 06:21:40 PM »
 :thinking: That might work

Jo
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Tooling & Machines / Re: MACHINING TIMING BELT PULLEYS
« Last post by Brian Rupnow on Today at 06:10:03 PM »
Here we have the cad model of the same pulley. and we see that a 0.118" (3mm) rod fits exactly into one of the spaces between the teeth.
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I was thinking a person could cut segments out of 1/4" sheet and then laminate two thicknesses together, staggering the joints and pinning them with brass rod. Much like a wooden wheel would be built.  Pockets for the spokes could even be milled into the segments before assembly. In fact the hub and spokes could be assembled and then the rim assembled over the spokes.  :thinking:

Jim
Sounds like that would work well. Good use for the rotary table.
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I was thinking a person could cut segments out of 1/4" sheet and then laminate two thicknesses together, staggering the joints and pinning them with brass rod. Much like a wooden wheel would be built.  Pockets for the spokes could even be milled into the segments before assembly. In fact the hub and spokes could be assembled and then the rim assembled over the spokes.  :thinking:

Jim
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Chatterbox / Re: Not a model engine
« Last post by bent on Today at 06:05:37 PM »
Would it be any better to have a toggle clamp for the handle?  Just thinking out loud.  Still love the idea.  :wine1:
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Tooling & Machines / Re: MACHINING TIMING BELT PULLEYS
« Last post by Brian Rupnow on Today at 06:00:22 PM »
This is the engine. Not a great picture of the engine, but a good picture of the timing belt pulley.
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Tooling & Machines / MACHINING TIMING BELT PULLEYS
« Last post by Brian Rupnow on Today at 05:57:55 PM »
Okay, people, today we're going to take a look at making timing belt pulleys. Small timing belt pulleys are absolutely the cat's meow for the things I run with my model engines. The images seen in this post are downloaded cad models of the pulley I used on my overhead cam engine two years ago.

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Your Own Design / Re: Chris's Marion Valve Winding Engine
« Last post by crueby on Today at 05:46:00 PM »
Got out to LeRoy to the Marion shovel this morning and got the Christmas lights put up - battery powered LED strings along the roof/floor/beam lines, around the tracks, and around the bucket. My ladder would not reach up the boom, so we skipped that for now till we can see how it looks after dark. If it goes well, next year we can arrange for the highway dept to bring out the bucket truck to do the lights all the way up the booms.

Now, just have to wait till it gets dark to see how it all looks - they should show up well since there are no street lights or houses nearby.

Is it dark yet?    Nope, still lunch time.... 


Now?  Nope....

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Wondering if you could bend a brass U-channel to form the rim.  Would need a set of rollers that would hold the sides true, unless you were okay with splayed legs.
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Chatterbox / Re: An announcement from my driver
« Last post by Flyboy Jim on Today at 04:53:15 PM »
Well put Marv....an observation I had as well.   The environment is not as cut throat as racing...or at least no worse.   

Additionally....the heart is fickle.    Its making him happy...and he taught himself Solidworks...and is designing.....hes a young man now....I can only coach....and that ability reduces every day.   My job is to make myself obsolete.....and it appears im doing a good job.   Hes a young man im very proud to know...hes kind, empathetic, and intelligent.     And on a good trajectory.

A young man, such as william, that can apply himself to get to the pinnacle, as he did with his racing, is going to do well at whatever he sets his mind to do. It's great that he's moving on to new challenges.

Jim
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