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The MightyBoy - is it restoration or Hotrodding?

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6 months 1 week ago #252961 by Mrsmackpaul
No good about the ankle, hopefully it is all okay

Hopefully the mighty boy doesn't have to come to far apart to sort the issue
I guess a lot of these things get easier with each time they are worked on

Paul

Your better to die trying than live on your knees begging
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6 months 1 week ago #252966 by Morris
Zuffen,
I feel your pain from the ankle. It would be better to leave the moon boot on if you can drive with it but I understand that you might have to take it off.

That is a Mighty Big project you have taken on with the Mighty Boy!

Many Happies to your Mum for her 99th.
 

I have my shoulder to the wheel,
my nose to the grindstone,
I've put my best foot forward,
I've put my back into it,
I'm gritting my teeth,

Now I find I can't do any work in this position!
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5 months 3 weeks ago #253171 by Zuffen
Quick update.
After faffing around trying to sort the clutch I'm biting the bullet and taking the engine out and splitting it from the transmission as clearly something has gone astray with it.
I can probably do it whilst sleeping, I've done it so many times.
Good thing is each time it comes out the install becomes better looking as little issues are sorted.
Lucky I'm a masochist.
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5 months 3 weeks ago #253233 by Zuffen
4 hours work this morning had the engine out, split form the transmission and the clutch out. The clutch came out as a set of linings, 4 springs and a centre plate and two drive plates. All separate to one and other.

Absolute catastrophic failure. No idea why as it was being driven quite gingerly as it's only just on the road.

Had the flywheel machined today and a new clutch should arrive this week.

Hopefully by Sunday week it will be operative again.
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4 months 2 weeks ago #253661 by Zuffen
I haven't been idle on the MightyBoy.

I put the engine back in with a new clutch and tidied up a few things so it looks better under the bonnet.

Whilst at it I installed the new stainless fuel tank I had made (2.5mm stainless) I can hardly lift it! One issue with the tank is you can't get the swarf out of it from drilling and tapping inlets and outlets in it. It did 100K before the fuel filter blocked and it stopped. Fortunately it was in my Street so I walked home, without incident, and retrieved the little car and cleaned the filter, which confirmed that was the issue. Purchased 2 see through filters, one to use now and the second for when the first looks blocked up. I had a minor incident making a bracket for the tank and spent two days in my local Hospital getting my finger stitched back together. They said I'm now a frequent flyer as I go there so often. No brain, no pain.

No sooner had I fixed the fuel issue than I took it for a test and it got 50 metres from my front gate, made a bang and stopped driving. It had broken an axle. The axles were shortened by an Engineering company and I question their ability. Both axles have now failed.

I originally requested they cut and mitre the shaft ends so they butted up against each other, then plug weld a sleeve on. The idea is the sleeve and plug welds stop the shaft moving apart and it can't rotate one end without the other as it can't move apart. What they did was step the shafts so they only had 50% of their surface area where the cut was made. This failed soon enough when the welds had no penetration. I think I could get more penetration with a banana than these guys got.

I rebuilt he shaft yesterday and gave it a 60klm run today and it seems good.

Now I know the shafts are the right length I'll get two new shafts made up from new material.

It brings a smile to my face when driving it as it is silly fast.
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4 months 2 weeks ago #253665 by wee-allis
Love the "silly fast". Can I use it if I ever get top drive something fast again?
Steve.

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4 months 2 weeks ago #253667 by Mrsmackpaul
I wonder what axles are made of, as in what grade off steel

Would it be best to use some axles that are to big and machine down to suit

Im sure you'll have this well in hand


Paul

Your better to die trying than live on your knees begging
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4 months 2 weeks ago #253668 by 77louie400
Make the axles (machine and cut) and then harden them, my grandfather use to do that in a forge when I was a kid, there would still be plough points and Tines laying around at the old place that he made. These days we cannot do things that were everyday 150 years ago, hardening the steel would be one of the easiest things to do on your rebuild
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4 months 2 weeks ago #253669 by grumpy gumpy
Metallurgy has changed in the last 150 years, steels have become more precise in their formula and as a consequence hardening of them is a scientific art form now. Unfortunately it means it’s easier for cackhanded individuals to stuff up complex steels. Some stuff can still be done by eye by competent individuals, but not the complex formulas
gumpy
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4 months 2 weeks ago - 4 months 2 weeks ago #253670 by 77louie400
You are correct, grumpy grumpy, for a start you would not use Grandfathers old forge and you would use complex immersion techniques but there is enough machine shops around still doing it that it's no big thing to find someone to do it, a few years ago, I was doing a pump station upgrade for Glen Innis shire and needed a pretty good shaft made and harden and a machine shop at Uralla done a great job, I am sure the blokes name was Peter Mayeski, he also did all the flange and coupling modifications for me for that job. There is a machine shop here in town that can do it so I would think it would be pretty common around the country. We had a 48 hour window to complete the changeover before the town ran out of water and it went as smooth silk with a couple hours up our sleeve for testing 
Last edit: 4 months 2 weeks ago by 77louie400.
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