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  #271  
Old 18-03-20, 16:47
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And my attempt.
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
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  #272  
Old 18-03-20, 16:52
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I am feeling a bit crappy so I decided to follow the Governments advise and self isolate myself in the workshop.

I finished the lining panels along the inside of the hull and made the box for storing the radio operators head set, other than that there nothing to report.
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Scan0034.jpg   DSC06430.jpg   DSC06436.jpg  
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #273  
Old 18-03-20, 17:01
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Well, I finally got my arse into gear and cast the first tyre on the return roller. It went fairly well, the only problem being that it was quite hard to free from the mould. I used a silicon release agent and as I couldn't get the roller to release from the base I ran a stanely knife around it, which scuffed the face but not badly and I can tidy it up, so no problem really. I spoke to the supplier today and they suggested using Vaseline, so I have used that on the one currently in the mould.



Jon
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DSC06445.jpg   DSC06446.jpg   DSC06447.jpg  
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #274  
Old 18-03-20, 17:31
Petr Brezina Petr Brezina is offline
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Top class work, Jonathan. Keep me feeded
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  #275  
Old 19-03-20, 12:24
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Quote:
Originally Posted by Petr Brezina View Post
Top class work, Jonathan. Keep me feeded
Don't worry Petr, there's plenty more to come.

Jon
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #276  
Old 26-03-20, 20:20
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Evening All,

I hope that you are all safe and well.

I haven't done much since the last update as the sun's been out and it's time to get the garden done. I have started the polyurethane casting mould for the road wheels but I am waiting for a new cutter to arrive for the milling machine and at the moment it takes a little bit of imagination to see the finished item.

Apart from that, I now have eight track return rollers with tyres on but not finished, as the polyurethane takes about eight days to go off and I can't finish machine them until they have hardened.

Jon
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DSC06448.jpg   DSC06449.jpg   DSC06451.jpg   DSC06452.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #277  
Old 30-03-20, 20:07
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Evening All,

A week of lock down done and I heard on the radio it could last for 13 weeks, so progress will slow right down but it will continue until the materials run out.

I have finished the mould for the drive wheels, it's made on the same principle as the return roller mould but bigger. I am worried that because of the amount of polyurethane required, about 6.5 litres, it will have problems filling from a single pour and although I am loth to use a double pour, I have constructed the mould with two pouring holes.


Jon
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DSC06454.jpg   DSC06458.jpg   DSC06461.jpg   DSC06462.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #278  
Old 30-03-20, 20:10
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more pictures
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DSC06462.jpg   DSC06464.jpg  
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #279  
Old 30-03-20, 20:15
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Pictures showing how the mould assembles around the wheel hub.

Jon
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DSC06465.jpg   DSC06466.jpg   DSC06467.jpg   DSC06468.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #280  
Old 30-03-20, 20:29
Bob Carriere Bob Carriere is offline
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Default Wild suggestions......

....always enjoying your progress and reading your email......fights cabin fever.

may be hard to obtain but are there no chemicals that you can mix to slow down the setting time.......?

...or adversely since most sets by temperature....can you refrigerate the bulk mix to give you a longer time to pour all at once..........

....can you rig up a vibrator to help the mix flow into crevasses and get rid of possible air bubbles......

.... not sure of your mix but it is common for woodworkers to heat up the mold and total mix to allow air bubble to rise from the mix....

Tilting that 65 pound bucket will be an exercise in itself.......

Bob C.
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  #281  
Old 31-03-20, 00:15
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Jon, can you explain how you mold works please (all the many gaps at the bottom) Thank you in advance.
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  #282  
Old 31-03-20, 12:06
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Quote:
Originally Posted by Mike Cecil View Post
Yes, still enjoying your build and marveling at your prowess.

Lifting & tilting a 65 pound bucket - interested to see how you overcome that problem.

Maybe rig up a pouring bucket like they have in foundries - a bucket with a pouring lip, hinged within, and suspended suspended from, an inverted 'U' shaped bracket?

Mike
I am confused and if I caused the confusion then let me apologise but the weight of the polyurethane is 6.5 litres or 14.5pounds, so where did 65 pounds come from?

Lynn,

The gaps around the bottom of the mould as superfluous to requirements, the vertical pieces of steel that form them, are only there to retain the flat strip that forms the outer face of the tyre in place and at the correct angle. These vertical pieces have been machined at an angle of 5 degrees on their top face which is the correct angle for said face.

The thin metal sheet, that gets wrapped around the mould and forms the outside diameter of the tyre, is held in place by long jubilee clips. One at the bottom of the mould, that seals on the area shown on the picture below (marked with a red arrow) and one at the top the seals around the top cover.
The sealing area is pretty thin but as it has been machined I am confident that it will form a good seal.

I hope that it explains it or at least my theory.

Jon
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DSC06464 (2)_LI.jpg   DSC06468.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #283  
Old 31-03-20, 16:26
Mike Cecil Mike Cecil is offline
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From Bob's post ....

"Tilting that 65 pound bucket will be an exercise in itself......."

Apparently I misunderstood. I'll delete the misleading entry.

Mike
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  #284  
Old 31-03-20, 19:03
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Jonathan Moore Jonathan Moore is offline
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Quote:
Originally Posted by Mike Cecil View Post
From Bob's post ....

"Tilting that 65 pound bucket will be an exercise in itself......."

Apparently I misunderstood. I'll delete the misleading entry.

Mike
Evening Mike,

It's no problem, I thought it was my fault.

Hopefully these two pictures show the angle of the face formed by the vertical pillars.

Jon
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DSC06469.jpg   DSC06470.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #285  
Old 01-04-20, 21:11
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Jonathan Moore Jonathan Moore is offline
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Thanks Bob, I think that I am going to need all the advice that I can get on this one.

Evening All,

I thought that as I was making moulds, I might as well make the mould for the suspension arm radius bump stops.
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DSC06513.jpg   DSC06512.jpg   DSC06516.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #286  
Old 01-04-20, 21:16
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The 7 larger holes are there to allow the polyurethane to coat both sides of the steel retention bracket and bond through the holes. Hopefully it will work, tomorrow morning I shall find out if it has.

Jon
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DSC06517.jpg   DSC06518.jpg   DSC06522.jpg   DSC06524.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #287  
Old 01-04-20, 21:29
David Dunlop David Dunlop is offline
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Is there much off gassing from those items as they cure, Jon? Will your shop end up being mouse free for a while?

David
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  #288  
Old 01-04-20, 21:59
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Evening David,

The two items that I have done so far are degassed with a pump next door in the vehicle area, which is much bigger and not heated, then I get out and return in the morning. The road wheels will be slightly different as I can't degas once the polyurethane has been poured into the mould. As for noxious gases, I don't stick around to find out but judging by the number of mice that I have caught where the vehicles are stored, it doesn't appear to be a problem.


Jon
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #289  
Old 02-04-20, 19:31
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Evening,

And the results are in......It looks pretty good to my eye, a bit of fettling when it's cured but on the whole I am pleased with it. There was a bit of leakage due to a small gap between the base of the upright and the base in one area but now that the resin has filled the gap it won't happen again.
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DSC06526.jpg   DSC06527.jpg   DSC06528.jpg   DSC06529.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #290  
Old 02-04-20, 19:33
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You can see in this picture the line of the retaining bracket and that the resin has coated both sides.

Thank goodness, success.

Jon.
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DSC06530.jpg  
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #291  
Old Yesterday, 00:42
David Dunlop David Dunlop is offline
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Jon.

I can hardly wait to see how much the external look of the hull is going to change once the rubber clad items start to go on.

Something that has never occurred to me until now, is whether or not balancing of the larger road wheels on armour is necessary. My uninformed thought is these wheels, although large and heavy, probably never reach a high enough RPM for any that might be out of balance, to cause a problem.

Hope your supply lines stay open and you and the family stay safe.

David
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  #292  
Old Yesterday, 10:16
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Morning David,

It's strange that you should mention that as it crossed my mind yesterday as I was trial fitting the jubilee clips and I have no idea. I really don't think that it will matter on my recreation but I wonder how they balance modern tank road wheels or maybe it doesn't matter.

Any thoughts,Anyone?

Jon
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1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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  #293  
Old Yesterday, 12:44
Grant Bowker Grant Bowker is offline
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This isn't strictly relevant, but I know of a fleet of school busses that didn't have a balanced wheel/tire in the entire lot. My experience was as a replacement driver so I ended up driving most of them. They had other issues but none hopped down the road speeds 0-98 km/hr.
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  #294  
Old Yesterday, 19:04
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Evening,

I thought that before I get too excited and cast all ten, I had better see if they fitted first. They still need fettling but I am pleased with them.

Jon
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DSC06531.jpg   DSC06532.jpg  
__________________
1950 Land Rover series 1
1967 Land Rover series 2A LWB
1986 Land Rover series 3 SWB
1938 DKW SB200
1944 DKW NZ350-1
1967 Ural K750 sidecar outfit
1944 VW Kubelwagen KDF82
1942 Steyr 1500A
1944 Morris C8A
1943 Chevrolet CMP8A HUP?
194? Bedford QL
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