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    Today, 06:47 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Thank you, JCHannum. That makes sense.--Brian
    232 replies | 16462 view(s)
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    Today, 04:58 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Today I discovered the first error in the 3d cad model of this engine which I downloaded from GrabCad. The hole in the end of the steamchest where...
    232 replies | 16462 view(s)
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    Today, 03:12 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    The steam chests are still "in process". One is about 80% finished and is bolted in it's final position on the cylinder. The other steam chest is...
    232 replies | 16462 view(s)
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    Yesterday, 05:35 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Here we are turning the ends of a steam chest between centers. One center is held in the 3 jaw chuck, one held in the tailstock chuck with a bit of...
    232 replies | 16462 view(s)
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    Yesterday, 09:56 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    Jon--I'm just going to run it on compressed air. I don't have anything capable of making steam, but my compressed air tank is always full out in my...
    232 replies | 16462 view(s)
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    Yesterday, 08:55 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    This will be the final "run in" of the engine, to let the pistons get well acquainted with the new cylinders. There is more information in the text...
    232 replies | 16462 view(s)
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    10-21-2017, 02:57 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Not finished yet but---You know how it is. You reach a stage where you have all these little pieces, and your just dying to see if they all fit...
    232 replies | 16462 view(s)
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    10-21-2017, 01:41 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Nah, it's just a 3/4" 2 flute endmill.
    232 replies | 16462 view(s)
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    10-21-2017, 11:56 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    And that, my friend is how we end up with this truly beautiful shape. The milling cutter is set at a fixed height. The table-stops on the front of...
    232 replies | 16462 view(s)
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    10-21-2017, 11:55 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    A simple arbor made from 3/4" cold rolled (same as bore of cylinder) and a piece of scrap aluminum cross doweled to the end of it, gives me a fixture...
    232 replies | 16462 view(s)
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    10-21-2017, 11:55 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    These are the final steps before I set the cylinders up on an arbor and finish the outside surfaces. Picture #1 shows a set-up in the milling machine...
    232 replies | 16462 view(s)
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    10-21-2017, 11:54 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    People have asked for more set-up pictures, so here we go. First picture shows drilling of holes for tapping in the end of the cylinder which was not...
    232 replies | 16462 view(s)
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    10-20-2017, 08:20 PM
    brian Rupnow replied to a thread drill bit jump in General
    I always use a center drill like the picture posted earlier in this thread, both in the lathe and the mill, before using a drill. My most commonly...
    12 replies | 820 view(s)
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    10-20-2017, 08:15 PM
    It's always a bit of a thrill to see a mantis or a walking stick. I have forest all around my place, and you get used to all of the common "bugs"...
    21 replies | 1146 view(s)
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    10-20-2017, 07:24 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Arcane--Thank you, I am aware of the Timesaver lapping compounds, but I have never used them. if something is a bad enough fit that it does require a...
    232 replies | 16462 view(s)
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    10-20-2017, 07:18 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Jerry--I wish that more of the "lurkers" would step up and make themselves known. A lot of the time I don't take pictures of set-ups, because it's...
    232 replies | 16462 view(s)
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    10-20-2017, 04:46 PM
    Another Rockerblock engine has sprung to life, in merry England. A fellow who had purchased my plans just sent me a very nice video, but it's not a...
    371 replies | 45650 view(s)
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    10-20-2017, 04:36 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    You know, I thought after I shut my computer off last night that I might have screwed up the math in that post. Ah well, bad on me. It was $12 for...
    232 replies | 16462 view(s)
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    10-19-2017, 07:19 PM
    George--I'd be proud to have an engine like that in my tractor. Beautiful work, as usual.---Brian
    18 replies | 767 view(s)
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    10-19-2017, 07:12 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Making cylinders isn't that difficult--but it's tedious. I had great plans of finishing both cylinders today, but "real work" interfered. So, after a...
    232 replies | 16462 view(s)
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    10-19-2017, 08:09 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    Dan--If you do that you can go from "run in' TO "worn out" in less time than it takes for a sparrow to fart.
    232 replies | 16462 view(s)
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    10-18-2017, 08:09 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Olf--It doesn't have a brand name on it, but I bought it at BusyBee tools here in Ontario. I have always referred to it as my "Tilt-a-Whirl" vice...
    232 replies | 16462 view(s)
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    10-18-2017, 04:46 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Today was a day for making cylinders. I made the end-caps yesterday. My back is sore and I'm going to quit for the day now. I am about half finished...
    232 replies | 16462 view(s)
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    10-18-2017, 03:07 PM
    Thank you Dan. I just ordered the set from Shars, which was in the last link you gave me.---Brian
    11 replies | 535 view(s)
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    10-18-2017, 12:07 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    3phase--you won't see that happen. The flywheel is only 2" diameter, not enough to "give it a spin and watch it go". Running in does free everything...
    232 replies | 16462 view(s)
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    10-18-2017, 10:52 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    Final "running in" with all moving parts installed. Please let me know if this link works. https://www.youtube.com/watch?v=16cjuCpjus8
    232 replies | 16462 view(s)
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    10-18-2017, 10:27 AM
    Bobw53--If you scroll down to the bottom of the link you sent me, you will see "Can not ship to Canada".
    11 replies | 535 view(s)
  • brian Rupnow's Avatar
    10-18-2017, 09:30 AM
    Gentlemen--After seven years of "making do" with brazed carbide lathe tooling, I want to move things up a notch. I want to buy a couple of "holders",...
    11 replies | 535 view(s)
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    10-15-2017, 08:37 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Sid--It looks very deceiving, because the crank webs are not parallel sided, but are triangular shaped. The crank is quartered. As far as increasing...
    232 replies | 16462 view(s)
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    10-15-2017, 03:41 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    JTiers--There is a world of sliding parts on something like this. Aside from rotational stiffness between the crankshaft and it's bearings and the...
    232 replies | 16462 view(s)
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About brian Rupnow

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Date of Birth
July 7, 1946 (71)
About brian Rupnow
Biography:
I am 69 years old, a design engineer by profession, and an amateur machinist.
Location:
Barrie, Ontario, Canada
Interests:
I build hotrods as a hobby, and have been involved in custom cars and drag racing most of my life.
Occupation:
I am a design engineer with 50 years experience designing prototype machinery and factory automation

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Brian Rupnow

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