Author Topic: Fabricating a flywheel  (Read 3796 times)

Offline gary hart

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Fabricating a flywheel
« on: April 07, 2014, 03:41:54 AM »
Hope these pictures explain.   Had the bronze ring on hand and thought would try making a flywheel from it.
Drilled ID of rim.
A ball end mill was used to groove the two hubs halves.
Spokes given about 2 degree taper.
Hub halves and spokes at hub silver soldered (brazed)
Trued up on faceplate and hub bored and reamed.
Some sanding and buffing.







 

Offline smfr

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Re: Fabricating a flywheel
« Reply #1 on: April 07, 2014, 03:51:27 AM »
It took me a while to figure out what was going on in the first photo, then I saw that you're using a right-angle doohickey to drill from the inside. That's a neat way to keep the outer rim flawless  :ThumbsUp:

Simon

Offline Dave Otto

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Re: Fabricating a flywheel
« Reply #2 on: April 07, 2014, 03:59:58 AM »
Gary you are always thinking out side of the box.

That is beautiful; do you have a project to use it on?

Dave

Offline zeeprogrammer

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Re: Fabricating a flywheel
« Reply #3 on: April 07, 2014, 04:00:36 AM »
Wow!

I could've used that.

Beautiful flywheel.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline gary hart

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Re: Fabricating a flywheel
« Reply #4 on: April 07, 2014, 05:05:52 AM »
Simon
Had that right angle drive and thought it would be good idea to make a tool holder for it.  Not as good as it seems, believe this was made for thin aircraft work (Boeing surplus).  The bearing behind bit holder has some wobble which I think was meant for self aligning when drilling thin stuff and save on bending drills.   Next time will drill from outside and plug the holes.

Dave & Zee thanks for the kind words.   Dave just recently seen (maybe here) a Ericsson Solar engine with YouTube.   Looking at the video and have just finished a Rider-Ericsson engine realized it is the same engine and linkage.  So built the flywheel.   Darn, don't look right so have to save this flywheel for another project but will use the same method for the new flywheel.
Gary

Offline Jim Nic

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Re: Fabricating a flywheel
« Reply #5 on: April 07, 2014, 11:28:21 AM »
That's a beautiful piece of work and a clever method, well done.  :ThumbsUp: 

Am I right in thinking that the spokes are held in the rim by virtue of the taper on them being "wedged" in the parallel holes?

Jim
The person who never made a mistake never made anything.

Offline Heffalump

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Re: Fabricating a flywheel
« Reply #6 on: April 07, 2014, 11:41:14 AM »
wow... shiney! Great work.

Offline Bearcar1

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Re: Fabricating a flywheel
« Reply #7 on: April 07, 2014, 02:44:37 PM »
It's definitely a keeper Gary, well done.


BC1
Jim

Offline gary hart

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Re: Fabricating a flywheel
« Reply #8 on: April 07, 2014, 03:32:03 PM »

Am I right in thinking that the spokes are held in the rim by virtue of the taper on them being "wedged" in the parallel holes?


Jim the spoke is straight and slip fit in the rim.  There is a small ridge where the taper stopped just before meeting the straight portion.
The spoke has adjustment in and out so pushing into meet the taper would work also.   Think the straight portion is needed to make the hub self centering.

Gary
« Last Edit: April 07, 2014, 03:55:09 PM by gary hart »

Offline Deko

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Re: Fabricating a flywheel
« Reply #9 on: April 07, 2014, 03:56:15 PM »
Grand job that Gary. :ThumbsUp: :ThumbsUp: :ThumbsUp: I hope you enjoy polishing more than I do, it could not have been too easy polishing around those spokes. I love the end results of polishing but hate seeing all my small parts flung up the workshop when I loose my grip on them.

Cheers Dek. :old:

Offline Brian Rupnow

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Re: Fabricating a flywheel
« Reply #10 on: April 07, 2014, 05:55:01 PM »
Beautiful job!!! What did you use to get rid of all the discoloration before you started to polish it. Did you immerse it in some kind of pickling agent, if so what was it and how long was it submerged?--Or did you just polish all the discoloration away?---Brian

Offline Don1966

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Re: Fabricating a flywheel
« Reply #11 on: April 07, 2014, 07:20:21 PM »
That's awesome Gary, I have a flywheel that I need to make for my up coming project and that is a great idea. Thanks for posting it. I like.......... :praise2:

Don

Offline sshire

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Re: Fabricating a flywheel
« Reply #12 on: April 07, 2014, 11:05:36 PM »
I've posted this on a few of my build logs. To remove the "pink" color, 2 parts hydrogen peroxide to 3 parts vinegar. A 10-15 minute soak removes the pink color from soldered brass
Best,
Stan

Offline Brian Rupnow

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Re: Fabricating a flywheel
« Reply #13 on: April 07, 2014, 11:18:06 PM »
Thanks Stan--I will try that the next time I silver solder some brass.---Brian