[vhgmcbuddy]

Voilà!

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[vhgmcbuddy]

Not sure where this is going but it should be accepted that back lapping is to keep the edge on cylinders that have been properly ground. Not the process to use to recover really blunt blades.

[vhgmcbuddy]

I note the “you can always buy a donor machine quite cheaply”. I assume the value of this one is about 300Kg of scrap metal. It might be better to use this as a donor machine, looking at it, I don’t know, if there’s anything usable there, I find the prospect somewhat depressing. Anyway, questions:

I live about 350yds from this machine. If I (literally) dig it out, is there any way I could move it that distance, on its own wheels, with no running engine. I have a Howard 350 that it might be possible to use as help pull.

As I say, I know nothing whatsoever about these. Can any drive mechanism be disconnected, and are wheels/axle likely to be able to rotate?

[vhgmcbuddy]

I see. Thank you, this one seems to have standard strake wheels, although not splittable (maybe an old mod? Could be made splittable). Don’t know what the engine is, do the pics give a clue?

Perhaps it’s compost, though.

• This reply was modified 2 years, 5 months ago by vhgmcbuddy. Reason: Toomuchbiglypictures

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[vhgmcbuddy]

Tyres should be pointing forward same as a tractor, if you hit a big stone the rotor will jump up but it won’t push the machine forward – it’s too heavy.
Even if it does that is far better than breaking something and why are you rotavating big stones.
Get an ultrasonic cleaner, you can get cheap ones on ebay for £30 or £80 – 120 for a good quality one, they are magic things and way better than messing with concoctions.

[vhgmcbuddy]

Thank you. It looks, from the brief glance I had, like this machine this machine (Trusty tractor with JAP 6 engine and 3-speed transmission, BUT with all-metal wheels (what are these called?). The bumper is the same at any rate.

Whether it turns over or not is anyone’s guess. A good sign is that there’s still a sparking plug vertically in the cylinder head, but whether it’s tight of not…

I will have to have another look, and try to get a few photos.

• This reply was modified 2 years, 5 months ago by vhgmcbuddy.
• This reply was modified 2 years, 5 months ago by vhgmcbuddy.
• This reply was modified 2 years, 5 months ago by vhgmcbuddy.

[vhgmcbuddy]

hi i’m ordering the paste and could someone tell me how much paste i’m going to need to sharpen all 3 cylinders?

[vhgmcbuddy]

Perfect Geoff, thanks again 🙂

[vhgmcbuddy]

Thanks! That’s probably it. The problem Is It’s almost impossible to get these new in normal price at least in my country. This would cost more than I paid for the whole tractor!

[vhgmcbuddy]

Definitely suggests an issue with the distributor. Either the cap or the rotor arm, probably the cap.

[vhgmcbuddy]

Could you tell me how to reduce the forward speed? Is it just riding slower or will this require to adjust the belts?

[vhgmcbuddy]

To back lap properly use a water based paste , not oil based as in valve grinding paste. Water based so that when done you can hose it off and get rid of every trace before rotating the cylinders in the cutting direction. Leaving a trace of paste “ undoes” some of the sharpening effect gained by the back lap. In an ideal world neglected cylinders should be relief ground to create some space to retain the paste during back lapping. Applying paste to well worn cylinders results in much of the paste being thrown off before it can get to work.
A Motor Triple with four bladed units will deal with quite heavy cutting but to get a good finish reduce the forward speed to increase the clip rate aka cuts per yard. There is an art to obtain a good finish with commercial powered cylinder equipment and even more skill required in using wheel driven gang mowers.

[vhgmcbuddy]

I can aquire some paste from internet but it’s pretty expensive and that’s why I asked can you do lapping without paste.

[vhgmcbuddy]

Thanks Geoff, if I did that would I be able to compete at ploughing matches? I only ask the question as I thought I had read somewhere that – essentially – everything on the plough had to be original, or from the correct time period or something.
Thanks!
Will

[vhgmcbuddy]

I can’t increase the cutting speed but i can’t cut any paper with that even after adjusting. This happens on all cylinders. And can you do backlapping without paste?

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