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  1. #1
    Join Date
    May 2011
    Location
    Cheshire.
    Posts
    11,361

    Default General tinkering thread ..

    Couldn't think where else to put it..

    Thought maybe a general thread for any tinkering or farting about we might be doing could be worthwhile. Please feel free to post your own, I'm always interested to what projects and fettling people are on with.

    This is what I have been on with, it's a power feed for my mill bed. It's an embellishment, but time saving, and will produce a better finish. The mill bed has a hand wheel at each end, but each revolution is only 2mm of travel, and there's 500mm of travel, so one end to the other is a ballache.

    This is the bones of it, a 270rpm gear motor fixed to a plate. From the plate are delrin bushings, these slide along 2 x 10mm stainless rods fixed to the mill. The 20mm rods replace the two machine screws that hold the yellow end plate on to the mill bed.
    To connect the motor to the mill I had to replace the original handwheel with a hex drive key ( I had to make this ), and mount a 22mm deep socket to the drive motor spindle. This is shown disengaged.




    And slid along to engage below. The main reason I need to be able to engage/disengage is the gearmotor is a worm drive, and you can only operate a worm drive one way, i.e. motor to output shaft, but this gear motor is bevel cut, so I can just still crank it for final position even when engaged.




    Picture of the modified spindle of the output side of the motor - 1/2" brass square to suit the 1/2" drive 22mm socket.




    Guts of the drive now mounted to the top cover plate, and 24v DC speed control mounted and connected.




    View from underside, the toggle switch on the left controls the bed direction left/off/right, and the dial is for speed control.




    The whole assembly had a tendency to flex when under load, I think the motor torque was flexing the 2 stainless rods slightly. It was only a touch, but I added another set of guide holes up front made from a tufnol plate. It's sorted it, its rock solid.




    Finally, a quick vid of it working. Next job is to motorise the vertical coloumn.

    [I][ Insert philosophical waffle about fly fishing here ][/I]

  2. #2
    Join Date
    May 2016
    Location
    Sheffield
    Posts
    5,374

    Default Re: General tinkering thread ..

    Sheesh Luke, that's one hell of a neat job, beautiful. You really take a great deal of pride in your work. Craftsman.

  3. #3
    Join Date
    Jun 2008
    Location
    Stamford
    Posts
    5,776

    Default Re: General tinkering thread ..

    Looking good.
    http://www.rutlandwaterflyfishers.co.uk/

  4. #4
    Join Date
    May 2013
    Location
    Salisbury.
    Posts
    466

    Default Re: General tinkering thread ..

    Here's my latest work in progress, made myself a furling engine. Not quite up to your airospace standard, mines more steampunk! But it furls a good leader. I'd like to replace the steel gears with nylon, but not sure where i can get that done, any contacts?


    Sent from my iPhone using Tapatalk

  5. #5
    Join Date
    May 2011
    Location
    Cheshire.
    Posts
    11,361

    Default Re: General tinkering thread ..

    A furling engine ! A more eco friendly version of the Stirling engine

    That looks plenty robust as it is, there's no load when twisting thread, would you need metal gearing? It's available though in various shapes and sizes, you'll find it on eBay china.

    E.g.

    https://www.ebay.co.uk/itm/262690131054
    [I][ Insert philosophical waffle about fly fishing here ][/I]

  6. #6
    Join Date
    May 2016
    Location
    Sheffield
    Posts
    5,374

    Default Re: General tinkering thread ..

    Quote Originally Posted by volksfish View Post
    I'd like to replace the steel gears with nylon, but not sure where i can get that done, any contacts?


    Sent from my iPhone using Tapatalk
    Just setting off fishing but I'm sure I've seen nylon gears in one of the catalogues in the pile in the corner, I'll have a look when I get back.
    I know for sure I've got some in the workshop, somewhere, but where

  7. #7
    Join Date
    May 2011
    Location
    Cheshire.
    Posts
    11,361

    Default Re: General tinkering thread ..

    Doh!

    Steel to nylon ...
    [I][ Insert philosophical waffle about fly fishing here ][/I]

  8. #8
    Join Date
    May 2013
    Location
    Salisbury.
    Posts
    466

    Default Re: General tinkering thread ..

    Steel gears are all i had laying about, donated from a VW Beetle oil pump. Nylon gears just would just be more pleasant on the ears!

  9. #9
    Join Date
    Mar 2008
    Location
    Living a life.
    Posts
    16,949

    Default Re: General tinkering thread ..

    Wow Volkes that's some set up for twisting thread, I use two thin cup hooks and a Dremmel.
    You might find the thickness of those hooks a bit much for the shorb loops?
    Good luck with it though.
    S.
    Sit still and watch the river, it's all a part of fishing.

  10. #10
    Join Date
    May 2013
    Location
    Salisbury.
    Posts
    466

    Default Re: General tinkering thread ..

    Yea I actually attach paper clips to those hooks, like I said work in progress. Don't think it'll ever break!


    Sent from my iPhone using Tapatalk

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