Giles' misc. Work bench.

Discussion in 'Workbenches, including workshop techniques.' started by Giles, 2 June 2019.

  1. Giles

    Giles Western Thunderer

    It works, at any rate!

    PhilH, TimC, Podartist79 and 12 others like this.
  2. BrushType4

    BrushType4 Western Thunderer

    Awesome Giles.
  3. Giles

    Giles Western Thunderer

    Thank you Phil!

    It's now about finished bar a larger battery on its way from China, a driver, a much more practice!

    PhilH, markjj, 3 LINK and 13 others like this.
  4. Giles

    Giles Western Thunderer

  5. Scale7JB

    Scale7JB Western Thunderer

    Fantastic stuff Giles.

    Do you need a few blue pallets in there or are they a modern thing?

  6. Giles

    Giles Western Thunderer

    Good question......
  7. Big Train James

    Big Train James Western Thunderer

    According to Wikipedia here, Chep pallets have been around since WWII. I would have thought it a more modern development.
  8. Osgood

    Osgood Western Thunderer

    Blue pallets? No officer, I don't have any blue pallets. smiley sweat.gif
    3 LINK and eastsidepilot like this.
  9. BrushType4

    BrushType4 Western Thunderer

    Did someone say blue pallets? 887760EE-3A2A-4E58-A5D6-7C215FE29810.jpeg
  10. eastsidepilot

    eastsidepilot Western Thunderer

    Boyblunder and Osgood like this.
  11. Giles

    Giles Western Thunderer

    You learn something new every day!

    I've made up about 15, which will do for the moment!

    The diff works well in this application, and was worth going to the extra trouble over - all in all, quite a successful exercise (just looking for the layout to play on now...)
    Last edited: 26 September 2020
  12. Podartist79

    Podartist79 Active Member

    The forklift - absolutely mind blowingly great Giles... as ever!
  13. Giles

    Giles Western Thunderer

    Thank you Neil! Hope we run into each other when this chaos is over....
  14. Giles

    Giles Western Thunderer

    Gearmotors have always been at the heart of the radio control stuff (and other bits and pieces) in the earlier days, the motors were of fairly good quality with good starting characteristics. However, we are now swamped with cheaper versions which run fine, but are off like a scalded cat! A couple of years ago we had the incredible little K20 5v gearmotors, which were superb - but the supply has now completely dried up. I thought I found a cache a couple of months ago, and bought four, but when they arrived, they were a different type, size and ratio - and no use to me. Likewise, i have five 100rpm N20 gearmotors, whose motors are too poor quality to use. So I'm going to try mating the 8mm motor from the unworthy gearmotors that were supplied to the N20 gearboxes. It will create something reasonably short, but with a large gearbox, but hopefully might perform reasonably well......
    We will see!

    Top is the 'donor's 8mm gearmotor - output speed about 40rpm
    Middle N20 gearmotor - useless motor, output 100rpm
    Bottom cut'n'shut 8mm motor mated to N20 gearbox. Looks to give around 100rpm.

    The test will be when it's hooked up to a receiver and started at slow speed.
    [​IMG]2020-10-06_05-06-23 by giles favell, on Flickr
    Rob Pulham, BrushType4 and 3 LINK like this.
  15. Peter Insole

    Peter Insole Western Thunderer

    Ahah Giles, you have just answered my question before I got round to asking!

    Richard (son and new member on here) and me have been pondering how to power a scratchbuild, 4mm scale Tube train! I pointed out the tiny motors that you use and suggested to him that they might fit the bill better than the usual type of motor bogies available.

    Speed of the train is not such an issue as the incredibly low clearance under the floors on all contemporary Underground stock.

    I was about to seek your advice about it, but it looks as if the supply problem will require a major rethink anyway now?!

  16. Mudhen

    Mudhen Western Thunderer

  17. Osgood

    Osgood Western Thunderer

    And what about direct-acting dampened long-stroke solenoids for operating all those doors......
    Peter Insole likes this.
  18. simond

    simond Western Thunderer

    There was an article years ago about using memory wire for MU doors.

    can’t remember where or when...

  19. Giles

    Giles Western Thunderer

    I can see two possible/hypothetical ways of how one might scratchbuilt a very low-profile bogie.

    Much depends on axle spacing etc!

    One is using Nigel Lawton type motors and drive belts slung transversely between the axles, probably with idler axle to reduce the speed. These could be configured for 12v operation.

    If you could hide an under-floor motor centrally, then driving the bogies via cardan shafts is no massive deal - either home made, or using components bought abroad. You can then drive the second axle using bevel gears on an in-line shaft.

    [​IMG]2020-06-11_06-40-59 by giles favell, on Flickr

    I'm planning on doing something similar with another steam crane with a gearmotor along side between the axles - but I doubt you'll have room for that.
    Rob Pulham, adrian and 3 LINK like this.
  20. Giles

    Giles Western Thunderer

    This cut'n'shut on first power up isn't as smooth as it should be - so ive had the motor off and have just refixed it to see if the mesh was slightly off - or whether the gearbox itself is a bit dodgy.

    However, meanwhile, I've taken another of the 40rpm gearmotors, taken the planetary gearbox off, removed one stage of gears, shortened the case and refitted it. I'm now getting something like 130rpm out of it, and it is lovely and smooth all the way up!! So that's a real win. It now becomes an extremely useful gearmotor. It's a little larger than the K20s, and not 'off the shelf', and £10 instead of £3, but still.....
    I also remembered to fully dismantle the gearbox and lubricate it, as this does improve its performance (I have forgotten to do this over the past couple of years....)

    The centre gearmotor with the brass sleeve is the shortened 130rpm version

    [​IMG]2020-10-07_03-14-55 by giles favell, on Flickr