• brian Rupnow's Avatar
    Yesterday, 04:44 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Yes, and if you have a cnc mill and the knowledge to program it, then that would have been a fine way to go about it. My machines are manual.
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    Yesterday, 01:18 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    I'm sure that if 100 engineers/machinists were asked "How do you turn that round bit on either side of the rectangular bearings?" you would probably...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-22-2017, 08:07 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    I was cutting with a 3/8" four flute carbide. I machined one side of the bronze with successive plunge cuts of 0.010", and that made the mill work...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-22-2017, 07:12 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    There is no coolant system on my mill nor my lathe. Both are strictly "squirt cutting oil on with an oilcan" machines. I got done what I needed to...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-22-2017, 05:03 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Here I am carving the outboard crankshaft bearings out of some aluminum bronze. Either my endmills are all duller than a hoe, or else this stuff is...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-22-2017, 02:48 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Way back at the beginning of this thread, I said that it appeared as if some of the engines dimensions looked like they might be straight conversions...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-22-2017, 12:10 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    YOWZAHH!!! We have the two built up brass cross-head guides mounted to a base. There is a lot of work in that base, but I like the way it turned out....
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-21-2017, 11:27 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    Ordinarily, I don't use transfer punches, instead depending on my DRO's to match all the holes in different parts that have to bolt together....
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-20-2017, 09:12 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    I have split the center bushing on the crankshaft for ease of assembly.
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-18-2017, 07:17 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    This is an "overview" of the engine with fabricated cross head guides and simplified base and bearings.
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-18-2017, 07:09 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    This afternoon I have been well enough to dick around with 3D cad, but too sick to machine anything or go to my real job across town. The base for...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-18-2017, 03:04 PM
    danlb--the weld suits the application. Good on you. When it's on your own stuff, functionality trumps pretty.
    634 replies | 233070 view(s)
  • brian Rupnow's Avatar
    09-18-2017, 01:58 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    bob-s I can choose however many decimals I want to show up on the right of a number as a "default" and it will always go to "default" when I'm...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-18-2017, 11:25 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    The base for this engine is going to be Ahhhh---Interesting. Nothing horribly complex, just a lot of milling and drilling. I am going to make a...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-16-2017, 07:14 PM
    6 years ago, when I first started to post pictures on forums, I used Photobucket because it worked very well, and was free to use. After I had posted...
    184 replies | 7660 view(s)
  • brian Rupnow's Avatar
    09-16-2017, 02:02 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    And now we have two!! The second stand turned out a bit nicer than the first one, mainly due to using a larger torch tip when soldering the joints....
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-14-2017, 08:42 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    No work on this project for a couple of days. I have a severe case of Sciatica and the pain in my lower back keeps me from standing at my machines....
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-14-2017, 08:34 AM
    Mr Fixit- I sell the complete set of plans as pdf files so that people don't require a special software to open the drawings. The rockerblock engine...
    370 replies | 43679 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 08:12 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Thank you for the suggestion Mcgyver. I find that soft solder gives me the opposite problem from silver solder. The darn stuff runs all over the...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 06:53 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    I didn't show this set-up for slotting the stand when I posted about the first one, so I'm showing it here. The 1.5" diameter is held in the 3 jaw...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 06:43 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    I use an oxy acetylene torch, because the only other torch I have is a Propane torch which simply doesn't get hot enough. I'm always a bit shy of...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 05:11 PM
    Gee Whiz--I'm going international in a big way. The second Rockerblock engine ever built was just finished by DavidLloyd2 in New Zealand. Cogsy in...
    370 replies | 43679 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 05:01 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    BCRider--A lot of this design stuff is very easy for me, and I'm good at what I do. But Jeez, I've been doing it for 52 years now---I should be good...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-12-2017, 08:21 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    I was warned that the citric acid pickling would leave a very definite mark on any part of the steel which was not completely submerged in the acid...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-11-2017, 08:22 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Hi Sasquatch--Glad to have you along. I am part way through the second assembly tonight. My soldered joints are still lumpy, but I did get a lot...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-11-2017, 05:01 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    I am really impressed with how well this citric acid works as a pickling solution for cleaning up parts that have been silver soldered together. I...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-11-2017, 10:57 AM
    Photobucket has said that anyone with a paid subscription at the $40 a year rate will have their pictures hosted on Photobucket until December 2018....
    184 replies | 7660 view(s)
  • brian Rupnow's Avatar
    09-11-2017, 08:24 AM
    brian Rupnow replied to a thread Back to Steam-- in General
    Having made one of the soldered "stands", I now have to make a second one. What did I learn from making the first one. First of all, use a bigger...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-10-2017, 08:17 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    Well Sir--I didn't even have to leave my house. I went upstairs and begged an emery board from my good wife (for filing fingernails). I hunted around...
    119 replies | 8373 view(s)
  • brian Rupnow's Avatar
    09-10-2017, 03:45 PM
    brian Rupnow replied to a thread Back to Steam-- in General
    HaH--Found flat sticks in Kitchener and round ones at Princess Auto. We have a Princess Auto right here in Barrie....
    119 replies | 8373 view(s)
More Activity
About brian Rupnow

Basic Information

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

Signature


Brian Rupnow

Statistics


Total Posts
Total Posts
7,607
Posts Per Day
2.18
Albums
Total Albums
3
Total Photos
0
General Information
Last Activity
Today 09:10 AM
Join Date
03-09-2008
Referrals
0