• brian Rupnow's Avatar
    Today, 02:37 PM
    I'm pleased!! when I released the tailstock chuck and slid it back out of the way, the very end of the new shaft had about .008 total runout as I...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 02:05 PM
    Well, so far so good. One picture shows the new shaft in the chuck. Damned thing turned out a bit blurry, but I started with 1/2" cold rolled steel,...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 12:17 PM
    BlackAdder--You are absolutely right. I hadn't thought of that. My measuring equipment is not really set up for measuring runout on the inside of a...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 10:44 AM
    I wasn't real happy with the results from reaming the crankshaft. When I put the dial indicator on it, the hole was about .008" total runout. So--I...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 10:18 AM
    I started the hole with a centering drill in the tailstock chuck, then drilled through with a 1/4" drill, then an 11/32" drill, then figured out that...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 09:44 AM
    So---Set up in the lathe, I measure .030" of total Wonk. That's .015" out of true center. The next trick will be to cut that bad end off and bore out...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 09:29 AM
    Dang--What a miserable little piggy to get the crankshaft out of. No worse than any other engine I suppose, but an hours work to get everything...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    Today, 08:39 AM
    brian Rupnow replied to a thread Toolpost grinder in General
    Plumber--don't preach to me about lazy attitude!! I may be a lot of things, but lazy is not one of them. I know I could probably design and build a...
    27 replies | 1364 view(s)
  • brian Rupnow's Avatar
    Yesterday, 09:49 AM
    brian Rupnow replied to a thread Toolpost grinder in General
    I guess maybe the second part of my question should be, does anybody sell a toolpost grinder that mounts to (wait for it----The TOOL POST!!!) That...
    27 replies | 1364 view(s)
  • brian Rupnow's Avatar
    Yesterday, 08:51 AM
    brian Rupnow started a thread Toolpost grinder in General
    I am considering buying a toolpost grinder from Little Machine shop. The site doesn't give a lot of information about them, and I have never used one...
    27 replies | 1364 view(s)
  • brian Rupnow's Avatar
    04-17-2014, 07:11 PM
    Jpfalt--That is a remarkably good idea.--If I had a toolpost grinder, I would do that.
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    04-17-2014, 07:08 PM
    Before I begin to tear everything apart, I decided it would probably be a good idea to measure just how much "Wonkiness" my crankshaft actually had....
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    04-17-2014, 06:09 PM
    I'm quite excited that so far this spring (touch wood), I haven't needed to use my new generator!!!--Brian
    28 replies | 1006 view(s)
  • brian Rupnow's Avatar
    04-16-2014, 06:38 PM
    Thanks Mark. I'm very proud of the way that engine turned out, but you know how it is---No matter how well the engine works, the first thing everyone...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    04-16-2014, 05:45 PM
    Enough time has gone by now, that I can start thinking about the wonky crankshaft on my opposed piston engine. Through trial and error I have weeded...
    21 replies | 981 view(s)
  • brian Rupnow's Avatar
    04-16-2014, 12:22 PM
    Blackforest--My granddaughters would love the sheep!!! Toolguy--The arbor has to be open at one end to hand load the rollers onto. I will design an...
    10 replies | 1047 view(s)
  • brian Rupnow's Avatar
    04-15-2014, 04:42 PM
    Okay--The game has changed. I just heard from my customer. That strange looking wheel is off a different custom machine which they buy from the U.K.,...
    10 replies | 1047 view(s)
  • brian Rupnow's Avatar
    04-15-2014, 08:29 AM
    brian Rupnow replied to a thread place for gears in General
    There is a bit of CAD magic available at that site. Use the "build your own gear" option and it will then let you download a very accurate 2D .dwg or...
    4 replies | 384 view(s)
  • brian Rupnow's Avatar
    04-15-2014, 08:11 AM
    Chipmaker--That was my "alternate" idea. However, there is a bit more going on than is apparent in the picture. Not only does the strange wheel with...
    10 replies | 1047 view(s)
  • brian Rupnow's Avatar
    04-15-2014, 08:02 AM
    Very nice!! I built one like that when I was about 14, using an old iron horse washing machine engine. It worked, but the engine made the bicycle so...
    10 replies | 854 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 06:27 PM
    Continued from here-- http://bbs.homeshopmachinist.net/threads/63109-Where-can-I-buy-this SirLes99You could be right. I will investigate.---Brian
    10 replies | 1047 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 04:01 PM
    Since the forum seems to be limiting the number of answers to any particular thread right now, this is a continuation of the original thread. Right...
    10 replies | 1047 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 03:57 PM
    brian Rupnow replied to a thread Where can I buy this? in General
    Right now I'm in "Wait and see" mode. As I say, I do have alternatives. I'm the design engineer. The people who ultimately will use and buy the...
    15 replies | 835 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 02:37 PM
    brian Rupnow replied to a thread Where can I buy this? in General
    Rustybolt and Alistair win the greased pig!! Actually that wheel is spun under power and comes up to contact a fleece paint roller. The paint roller...
    15 replies | 835 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 12:42 PM
    brian Rupnow replied to a thread New site problems in General
    I am not being notified when someone posts in threads I have started, I still get "data base error" when I post, and whatever I post in does not move...
    15 replies | 607 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 12:39 PM
    brian Rupnow replied to a thread Where can I buy this? in General
    Those wires you see are not flexible like on a wire wheel. they are quite rigid.
    15 replies | 835 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 09:15 AM
    I have a job coming up for a customer and it is going to require some of these strange porcupine like drive wheels on it. The wires look to be about...
    15 replies | 835 view(s)
  • brian Rupnow's Avatar
    04-14-2014, 08:36 AM
    brian Rupnow replied to a thread Data Base Error in General
    Have they got the forum fixed yet?
    5 replies | 332 view(s)
  • brian Rupnow's Avatar
    04-13-2014, 12:30 PM
    Here is a short video with the new gas tank on the running engine. There is a link to Photobucket, also to Youtube. ...
    13 replies | 390 view(s)
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About brian Rupnow

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About brian Rupnow
Biography:
I am 64years 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 42 years experience designing prototype machinery and factory automation

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