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Author Topic: I caught Rocker-itus too!  (Read 25474 times)

Offline Bernd

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I caught Rocker-itus too!
« on: July 24, 2009, 07:26:34 PM »
All this talk about the Rocker Engine, the fine examples shown here, and Bogs fancy flywheel got me motivated to try a Rocker engine also, as if I have the time for another project.

So I started out with the flywheel first. I did a bit of head scratching to see if I could come up with something different in flywheel design. I literally slept on it. The next day I had a design worked out. Nothing fancy mind you, just 10 parts to make up the flywheel.

So here's the first pic of what it looks like.



And now how I got to this point. First a piece of 1.5" dia. brass faced.



Then turned around, faced, center drilled and drilled to a .188" depth.



I then used an end mill to get a flat bottom.



Next the boring bar was used to bore the ID of the flywheel.



Here it is at 1.000" dia and .188" deep.



Next all the little parts that were turned earlier, of which I didn't get any pics of, were tweaked to proper size on a mandrel so they would fit inside the 1.000" dia and sit flat on the bottom.



They were then silver soldered together to form one piece.



Back to the lathe and faced off.



Next I used a chamfering tool to line up the smaller parts. I used a bigger drill to enlarge the holes of all the smaller parts. The hole 180 degrees from the tool is already done.



Then it was back into the lathe to have the back side faced off until all the holes showed through.

Here's a couple more pics of the finished flywheel.





Well now, I suppose I need to make the other parts to finish the Rocker. Guess I need to sleep on it to see if I cam come up with something different for the rest of the engine.

Regards,
Bernd
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Offline dsquire

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Re: I caught Rocker-itus too!
« Reply #1 on: July 24, 2009, 08:30:48 PM »

Bernd

I think you have caught more than Rocker-itus. I believe you have caught a severe case of Acute Impresive Rocker-itus.  :ddb: :ddb:

Sure beats laying bricks.  :offtopic:

Don ducking and running for cover :wave:

cheers  :beer:

Don


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Offline rleete

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Re: I caught Rocker-itus too!
« Reply #2 on: July 24, 2009, 08:31:09 PM »
Nice.  You never mentioned this on your visit.  Done after you left?
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Offline zeusrekning

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Re: I caught Rocker-itus too!
« Reply #3 on: July 24, 2009, 08:32:05 PM »
Man Oh Man. Now that is sweet. I love to see new flywheel ideas. And this is a very impressive one I had never thought of.  :thumbup:
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Offline Divided he ad

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Re: I caught Rocker-itus too!
« Reply #4 on: July 24, 2009, 08:46:31 PM »
Well Bernd,

From a man who don't really do bling much, you're certainly doing a stand up job  :clap:


I too love a good flywheel   :ddb:



 I like this game..... Waiting to see what you can come up with?  :nrocks:







Ralph.
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Offline sbwhart

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Re: I caught Rocker-itus too!
« Reply #5 on: July 25, 2009, 01:43:45 AM »
Coor blimey Bernd

Thats one great looking flywheel very impressed.

 :nrocks:  :clap:  :nrocks:  :clap:

Have fun

Stew
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Offline shoey51

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Re: I caught Rocker-itus too!
« Reply #6 on: July 25, 2009, 02:16:30 AM »
 :bow: :bow: :bow: :bow:  :nrocks:
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bogstandard

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Re: I caught Rocker-itus too!
« Reply #7 on: July 25, 2009, 02:21:53 AM »
Bernd,

At last, people are staring to think outside of the box when it comes to these little engines.

All it takes is a little imagination, and you are away.

Very nicely done indeed.  :clap: :ddb:

But be very aware, your flywheel will be very soft and fragile for the next few weeks, until it age hardens a bit, as I have just found out with my build. :(

Bogs
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Offline foozer

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Re: I caught Rocker-itus too!
« Reply #8 on: July 25, 2009, 03:14:29 AM »
Glad I'm fairly done with mine or I'd be  :bang: the wall trying a version of yours :)
Parts were small enough as it was

Robert
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Offline Stilldrillin

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Re: I caught Rocker-itus too!
« Reply #9 on: July 25, 2009, 04:06:09 AM »
WOW!!!!!    :bow: :bow:

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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #10 on: July 25, 2009, 08:37:32 AM »
Quote from: dsquire on July 24, 2009, 08:30:48 PM


Sure beats laying bricks.  :offtopic:

Don ducking and running for cover :wave:

cheers  :beer:

Don




I'm running and ducking with you because she's throwing bricks.  :lol:

Thanks Don. It's been raining off and on here quite a bit so bricklaying isn't moveing very fast. I've been trying to keep up with the grass mowing, though.

Bernd
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #11 on: July 25, 2009, 08:39:32 AM »
Quote from: rleete on July 24, 2009, 08:31:09 PM
Nice.  You never mentioned this on your visit.  Done after you left?

I wasn't sure if I was going that route or not or if it would even work. I was ready to write a "How not to make a flywheeel" if it hadn't. Figgured I surprise you by posting. :)

Bernd
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #12 on: July 25, 2009, 08:42:21 AM »
Quote from: bogstandard on July 25, 2009, 02:21:53 AM
Bernd,

But be very aware, your flywheel will be very soft and fragile for the next few weeks, until it age hardens a bit, as I have just found out with my build. :(

Bogs

I noticed that when I drilled the holes bigger. I noticed how easy the drill went through the material. I was afraid that it would grab the part and lift it out of the vise, but it didn't. Flywheel has been set aside for now. Need to think of how I'm going to do the rest now. Perhaps a few more nights sleeping on it might help.  :)

Bernd
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #13 on: July 25, 2009, 08:44:07 AM »
Thanks for all the nice comments from the rest of you. Just rying to get the creative jucies flowing here.

                                                              :proj:

Regards,
Bernd
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Offline Brass_Machine

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Re: I caught Rocker-itus too!
« Reply #14 on: July 27, 2009, 07:58:48 PM »
I missed this one as well... My mind is slipping.

I love the design Bernd. Care to share the details on how you designed it? I may want to have a hand at trying it.

Eric
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #15 on: July 27, 2009, 08:37:49 PM »
Quote from: Brass_Machine on July 27, 2009, 07:58:48 PM
I missed this one as well... My mind is slipping.

I love the design Bernd. Care to share the details on how you designed it? I may want to have a hand at trying it.

Eric

The wheel dia. is 1.250" so I made the inside of the flywheel 1.000". The hub I made .375". I drew this up in Autosketch. I then played with the circle drawing part until I had a round ring that would fit 4 times in the dia. between the .375" hub and the inside 1.000" dia. of the flywheel. The four smaller circles were added the same way.
I used a piece of brass rod about .250" thick and bored it to a .188" depth or there abouts. This allowed me to align the parts flat. Koso Hiraoka does something similar in his building of the three logging locos he's built. Much easier to assemble parts this way. Hope I was able to explain it good enough for you to understand.

Here's the Autosketch Drawing



Bernd
« Last Edit: July 27, 2009, 08:54:49 PM by Bernd »
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Offline foozer

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Re: I caught Rocker-itus too!
« Reply #16 on: July 27, 2009, 09:08:08 PM »
Quote from: Bernd on July 27, 2009, 08:37:49 PM

 Much easier to assemble parts this way.

Bernd

Easier? I'd go blind or nuts looking for them. Sure at least 2 would find their way to the floor

Robert
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Offline dsquire

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Re: I caught Rocker-itus too!
« Reply #17 on: July 27, 2009, 10:29:57 PM »
Quote from: foozer on July 27, 2009, 09:08:08 PM


Easier? I'd go blind or nuts looking for them. Sure at least 2 would find their way to the floor

Robert

Robert

There is a simple cure for that. Make em outa steel. When ya drop em just send that big a??ed magnet after em. That will get them every time as long as they haven't pulled an Elvis and left the building. You might be suprised at what else you might find! :bugeye:

 If you don't like steel finish then just paint or plate what ever yout heart desires. :lol: :lol:

Cheers  :beer:

Don

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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #18 on: July 28, 2009, 07:45:08 PM »
Well I was going to work on the cylinder tonight. Notice I said "was".

Well I got the stock cut. I did a quick look at the print and saw the .890" length. Ah, 1.000" aught to do just about right. Cut two pieces.

Set up the Sherline in mill mode and clamped two parts in the vise. Figure if I mess one up I'll have another.
When I finished milling one of the blocks square I figured I'd better check the over all length. So out came the print. A much longer look and I discovered that the over all length is not .890" but 1.020".  :bang:  :bang:  :bang:  :bang:

So now I have two pieces to use for two wobblers perhaps or maybe a ................

Next time I better check the print a bit closer. :doh:

So that's it for tonight. Gonna' surf the net for a while.

Bernd
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Offline NickG

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Re: I caught Rocker-itus too!
« Reply #19 on: August 11, 2009, 10:31:30 AM »
Bernd,

Love that flywheel! You've made a mistake there though as now the rest of your engine has to live up to it! :doh:  :)

Nick
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #20 on: August 11, 2009, 01:11:10 PM »
 :doh: :bang:  :bang:  :bang:  :bang:  :doh:


 :lol:                                       :lol:


Bernd  :coffee:
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Offline Bernd

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Re: I caught Rocker-itus too!
« Reply #21 on: August 11, 2009, 06:57:10 PM »
Here's a couple of pics of the engine as far as I've gotten so far.





So to complete the engine I need to drill the piston rod, make the crank wheel, the stand and finish the part in the 3" chuck and solder it to the cylinder for the air connection.

What's holding me up right now is figuring out what kind of base I want to make for it.

Oh, I still need to do a bit of polishing between the spokes to get rid of that copper look.

Who knows I might get it done in the next..............years.  :lol:

Bernd
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Offline foozer

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Re: I caught Rocker-itus too!
« Reply #22 on: August 12, 2009, 01:18:23 AM »
Fudge, now I'm getting the urge to make "ANOTHER"

Robert
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Offline Stilldrillin

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Re: I caught Rocker-itus too!
« Reply #23 on: August 12, 2009, 02:04:17 AM »
I`m just wondering when mine might be finished.........  ::)

It does run though!  :D

Just too darned busy with "important" work.......   :bang:

David D

« Last Edit: August 12, 2009, 02:06:19 AM by Stilldrillin »
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Offline raynerd

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Re: I caught Rocker-itus too!
« Reply #24 on: August 12, 2009, 03:15:11 AM »
David D - finishing your engine is important work   :poke: :lol:!
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