Author Topic: Mia's Engine.......  (Read 15086 times)

Offline Stilldrillin

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Re: Mia's Engine.......
« Reply #15 on: January 23, 2014, 11:02:58 PM »
Frazer.
I have plans for detachable flywheels. And, if you'd seen her recent drawing of Grandad, you'd realize, I'm safe, for a while.  ;)

Dave.
Plans for a slot cover of some sort, are in hand.

Alan.
You set me thinking. Flywheels held on with magnets! Maybe.......


Time to make the two cranks.

This is the first time I've made anything from "mild steel"! En1a?
I have always used heat treating steel, when at work, and since retiring. En24/ 36/ 39/ aisi4140 etc. But, stocks are now getting low. I've had to buy some.
Got to admit, it's sweet cutting material.......

Drilled/ reamed 1/4" through, from either end. Part off.......




4mm dia, drill/ ream, the 6mm throw.......




Drill/ tap, the grubscrew holes........




Finished.......




Spun in the lathe chuck. One end is within 2 thou of the other.......




Crank assembly finished.......




Finger clearance, under the lever. Now need to make a knob, or dish to mount on top ........




Flywheels, next. Wooden ones!

David D



« Last Edit: April 17, 2018, 09:40:09 PM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline b.lindsey

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Re: Mia's Engine.......
« Reply #16 on: January 24, 2014, 01:26:51 AM »
David, its a great project and I know you want it simple enough for Mia to help with the assembly. I would be a bit concerned about the wooden flywheels though in terms of operating the engine with finger power. Generally the more mass that is in the flywheel(s), the easier it will be to keep running. Just something you may want to explore for when she wants to make it "run" after the assembly phase.

Bill

Offline Stilldrillin

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Re: Mia's Engine.......
« Reply #17 on: January 24, 2014, 08:15:15 AM »
Thanks for your thoughts Bill.
I have already tried the "original", with just a single flywheelwheel. No problem!

The mass of the internal crank discs is as large as possible, for the space available.
Twin 4" x 5/8" hardwood discs should be ok....... I hope!

The reason for wooden wheels is, camouflage....... Hoping Mia doesn't recognize her engine. Also, protecting Grandma's furniture.

The discs are roughed out. First test run, later today......

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Offline sbwhart

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Re: Mia's Engine.......
« Reply #18 on: January 24, 2014, 09:15:39 AM »
Great project Dave good idea making it into a finger engine I made a finger engine a few years ago and it is a favourite with my grandchildren.

Stew
A little bit of clearance never got in the way

Offline ths

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Re: Mia's Engine.......
« Reply #19 on: January 24, 2014, 11:01:09 AM »
She's a lucky girl Dave. Great project!

Cheers, Hugh.

Offline b.lindsey

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Re: Mia's Engine.......
« Reply #20 on: January 24, 2014, 12:25:46 PM »
Ah....I can see the logic now...especially as to protecting grandma's furniture :)  Somehow I think Mia will still recognize it though :thinking:

Bill

fcheslop

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Re: Mia's Engine.......
« Reply #21 on: January 24, 2014, 12:59:06 PM »
Hi David, nice project
Dont worry Mias drawing skills will soon improve :facepalm:and then you can join the club :Jester:
We are now onto a high speed Four masted/paddle wheeled boat :insane:and Im sure Iv got shares in pop pop boat engines .I need to make some press tooling as its costing me a fortune in replacement engines.
cheers

Offline Stilldrillin

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Re: Mia's Engine.......
« Reply #22 on: January 24, 2014, 07:41:26 PM »
Hi Stew, thanks.
You sowed the seeds. When you made your column engine. It's a pity it took me so long.

Thanks Hugh, Bill.
I just hope she appreciates the effort.

Thanks Frazer.
That boat sounds a cracker! Replacements? Warranty claims? Oh dear!
Have you managed a reliable runner, yet?


Flywheel time!

Two blanks, chopped out of a 16mm chopping board. 1/4" hole through centre........




Mount onto 1/4" bar held in chuck. Friction turn against chuck jaws.......




Cleaned up at 4.3" o/d. That will do, for now........




Test video........

<a href="http://www.youtube.com/watch?v=nhFxNNzj2c0" target="_blank">http://www.youtube.com/watch?v=nhFxNNzj2c0</a>


Need now, to design some detachable hubs. For when Mia Mechanic wants to play.

David D
« Last Edit: April 17, 2018, 09:43:27 PM by Stilldrillin »
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

fcheslop

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Re: Mia's Engine.......
« Reply #23 on: January 24, 2014, 10:47:06 PM »
Cheers  David, reliable runner? about ten candles per engine  :lolb:

Offline Nicolas

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Re: Mia's Engine.......
« Reply #24 on: January 25, 2014, 01:15:32 AM »
This is great David :)  :ThumbsUp:

Just a thought, maybe you could put a pattern similar to the Wilesco M69 on the flywheels :thinking: (just don't look at it for too long :Lol: )

Thanks,

Nicolas

Offline Stilldrillin

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Re: Mia's Engine.......
« Reply #25 on: January 25, 2014, 09:06:15 AM »
Wow! That's a crackin' idea Nicolas!  :whoohoo:

I guess I could find a spiral pattern on Google. Print off, and stick on........  :thinking:

Thanks!  :ThumbsUp:

David D
David.
Still modifying bits of metal... Occasionally, making an improvement!
Still drilling holes... Sometimes, in the right place!

Online steamer

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Re: Mia's Engine.......
« Reply #26 on: January 25, 2014, 12:05:42 PM »
That looks awesome Dave!

Mia's going to love it!


Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline arnoldb

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Re: Mia's Engine.......
« Reply #27 on: January 28, 2014, 06:09:20 PM »
Good going David  :ThumbsUp:

Hmmm...  Now who's going to play with it the most - you or Mia  :LittleDevil:

Kind regards, Arnold
Building an engine takes Patience, Planning, Preparation and Machining.
Procrastination is nearly the same, but it precludes machining.
Thus, an engine will only be built once the procrastination stops and the machining begins!

Offline b.lindsey

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Re: Mia's Engine.......
« Reply #28 on: January 28, 2014, 06:21:52 PM »
Mia will love it Dave...I do too for that matter :)

Bill

Offline metalmudler

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Re: Mia's Engine.......
« Reply #29 on: January 28, 2014, 06:43:02 PM »
Dave,

Good to see you involving your Grand daughter like that.. Too cute for words mate..  (No, not you).. :facepalm2:  Thats nice of you to make that for her.Im sure it will be still running when your dust.

Paul
It's not done, until it's DONE... Even then there is something else to do to it !..