Can't help you with the bolt sizes but I'm interested in some pictures of your little ransomes if you don't mind showing us?
I also inherited one about 13 years ago but it was way to far gone for the tracks and running gear, still sitting in the shed waiting for some rubber tracks to make a toy out of it one day along with the other million projects
I had a couple of Ransomes about 25 years ago. Mainly for the kids. There was a bloke in Newcastle I think making the rubbers. I got a set and it was obvious how long the required bolts were, from memory 3/8 or 1/2. I just got Bunnings bolts and nyloc nuts. One had a blade which I used for a short time (quicker with a hand shovel) and they did not look like giving up.
I have seen several people cutting their own track rubbers out of old truck tyres. I am sure there is plenty of info out there. I think almost any sort of rubber or nowadays poly of the right dimensions would work fine. The little things can carry on remarkably with missing rubbers just flopping around on the sprocket and loose bolts but I am sure you would be buggering teeth and track sections doing it too much.
Surely we have Ransome owners on the forum with workshop manuals and practical ideas.
I know nothing about almost everything, but I am jealous, what a great toy. I almost scored a fiat dozer years ago, and it had track issues, I was since told, ordinary mild steel pins, bolts etc were all that is required and a good welder to fix the worn track. Needless to say Mrs Sarge was very pleased it never came home....... and put the knife away.
A guy over here in Western Australia named Dave, has a collection of most models including a diesel MG40. He has the engine out of my MG6 for parting or merge rebuild of an MG6 he has. He also has a punch for making track rubbers from conveyor belt. For each joint you need four, two between the track plates and one each under the caps. I think he also has .jpg files of artwork for MG5 and MG6.
They appear to be UNC with a 5/8 head and 11/16 nut and the head is half as thick as the nut. Dad thinks he used higher grade than normal but couldn't remember what he ordered. Also said it was important to make up a gauge, according to the figures in the manual, to make sure the spacing between the plates was not too loose or too tight.
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