What's this officially called?

what sort of things and where do you want to fix them?

flanged shaft hub with setscrew and x number of screw holes in flange?

JD

There is a similar item as you describe at the link below, but without the holes in the flange. You may be able to find the exact one you want on their site somewhere, they have a lot of stuff. Won't be cheap though. It would be far easier to make a disc and make a hub and solder/glue/press/weld it together.

https://sdp-si.com/ss/PDF/79001225.pdf

JD

I got quite a lot of hits when I googled "bush wheel" (with quotes). Of course, the overwhelming majority of the hits were "noise" - which is par for the course with Google these days - but there looked like one or two actually useful hits in there.

I got some search results for "boss flange plate"

Hi Graham,

If the Meccano Bush wheel o/d is large enough for your needs you could modify the boss by filling the existing bore by silver soldering a bit of 4mm brass in there and re boring to 1/8", otherwise open the bore to say 6mm and make a suitable sleeve, Loctited in place. You could always make an adaptor with a bit of 6mm brass, blind bored to fit your motor shaft and the end turned to 4mm to fit the Meccano boss, or drill out and remove the Meccano boss and fit a home made one.

If the 'bush wheel' isn't large enough, 2" dia or larger Meccano sprockets which have holes are available for a couple of pounds, again you would need to modify the boss, you could use a circular plate and add a home made boss. the bosses on used Meccano parts are often loose and collectors fix them by spreading the end of the boss with a steel ball using a vice as a press (fit a grub screw to prevent the thread collapsing), or with Loctite.

PM me if you would like to try some of these solutions, I could find a few bits for you to experiment with.

Best regards

Terry

Hello Grayham!

Have you considered the small auxiliary wheels for the children bikes?
The ones applied either at one or at both sides of the bicycle?

Best regards
Dias Costa

Graham,

Given the size of motor shaft ... I think you would would do best to look at spares for Radio Control Servos.

Many of the Servos now come with a Disc/Flange instead of the traditional "Horn", and it should be easy enough to ream the hole a little with simple tools.

ServoShop seems to stock almost everything! ... and they sell spares.

[I have no experience of dealing with them, but they look the business]

MichaelG.

Graham, Where do you live? I am sure one of us could quickly make what is required.

Graham,

If you are working with limited tooling

This little drilling template might be useful.

MichaelG.

Not much help, but I have problems at times with pullies for my hot air engines, so most of them are bored to 3/8", then if required a bush is made, and split lengthwise, the pullies have two set screws, one is placed either side of the slit. As the pullies get changed frequently, i use brass set screws so that the shaft does not get damaged, if it slips, good the motor is producing too much power, that does'nt happen too often. One thing you might be able to do is find a little tube that fits the shaft, and fits inside the flange,cut a slit down the side of it. Maybe a meccano one with a bush could be used. One place to find small tube is telescopic radio aerials, also there is often a rack of tubes etc at hobby shops.

Ian S C

You are going to need a very good fit or adjust ment capability to avoid wobble. A normal Meccano fit is very loose by engineering standards. You also need the bush part to be as long as possible.

You can check your drill by holding a stiff L shaped 'thing' in the chuck wih the arm say 7 in long set just a fraction above the wooden flywheel on the table and rotate it by hand. Smear of paint (lipstick is good) on the end of the arm. Adjust what ever is possible eg bits of paper under the flywheel to get an even touching circle. Better is to measure the gap using feeler gauges.

If you can get a good fitting bush and a brass disc already attached to your wooden flywheel using the trued up drill above use that to hold the bush while soldering it to the disc. This takes out much of the variables or alignment leaving only the looseness of the axle.

Another thougth - how are the motor bearings going to handle the load?