Two plank dumb buffered wagon

[Bigjohn]

Never mind the number of spokes…………..how many leafs to the springs are there?.?.?.?.?.

John

 

[Brian McKenzie]

The sketch at post #11 gives the appearance of the wheel spokes being formed from some sort of T shaped section (drawn below as 1" x 1/4" based on 36" wheel diameter). Any cross section info would help.

 

[Dog Star]

The sketch at post #11 gives the appearance of the wheel spokes being formed from some sort of T shaped section....

I agree with your suggestion.

 

[Jon Nazareth]

Brian
That’s pretty good, well done. I’m interested to see the drawing that Overseer has.

Jon

 

[simond]

I like the T section, but I feel that the outer diameter of the segments would have to be somehow “trapped” within the wheel, so I feel that the tyre should overlap them, both on the front face (probably part of the tyre) and the rear (probably a pig-ring staked in?)

 

[Jon Nazareth]

I’ve seen drawings that show the Spokes riveted to the rim.

 

[simond]

I was thinking something like this


from the post at the bottom of page 1 - but with T Section spokes.

but that would mean that at least some of the crossbar of the T would be hidden by the rebate of the rim.

when you say rivetted, I assume axial rivets like a Mansell wheel?

 

[Jon Nazareth]

Simon
No, a couple of rivets through the spoke and into the tyre. Apparently, they were banned due to failure of the tyre. Having said that, my wagon wheel doesn't show any rivets.
Looking at your drawing, I do see what you mean.

Jon

 

[simond]

Simon
No, a couple of rivets through the spoke and into the tyre. Apparently, they were banned due to failure of the tyre. Having said that, my wagon wheel doesn't show any rivets.
Looking at your drawing, I do see what you mean.

Jon

Yep, I can see why radial rivets might not be a super idea…

 

[Jon Nazareth]

There’s been a lot of head scratching on my part over this one. The HMRS drawing scales at 24mm : 12” and so I’m measuring off and then calculating what I’ve actually measured. I’m getting there though thanks to Ian Turner who supplied the calc.
This my normal way of building up the styrene frame. Two wooden uprights glued at right angles to a wooden base. The block on the right with the spot mark is there as a spacer for the buffer beam.
The other photo shows two pieces of styrene glued to each other to form one of the curb rails. Evergreen are very good with the various sizes that they produce but they’ve slipped up in this case.
So, a start but not an awful to show just yet. I’ll mark out and drill the holes for the axlebox guides before glueing up.

Jon

 

[Jon Nazareth]

I’ve had to scrap the idea of the two part curb rail as it didn’t really work. If my mill vice had much wider jaws, I could have machined down a curb rail of the correct size from a piece of larger section styrene. They aren’t and so I have had to order up a stock size albeit slightly smaller.
The springs are fixed to the solebar with 12BA screws and I’ve also drilled the holes for mounting the W irons although, they aren’t W shaped.
Yesterday afternoon was spent making up the two hangers for the single handbrake. The pictures show them completed in-between some filing buttons.
Until the new curb rail material arrives, I’m really at a standstill.

Jon

 

[Jon Nazareth]

I spent the best part of today machining wheel rims out of this 2” lump of steel. When I took it out of the chuck they appeared a bit small in the diameter and when I measured them, they WERE! Oh well, I have another lot of steel and as Scarlet O’Hara once said, ‘Tomorrow’s Another Day’. ‍♂️

Jon

 

[JimG]

Wow. Measure twice, cut once.

I have done the same but only for one wheel.

Jim.

 

[mswjr]

Been there too, We have all done that John, It is the waist of a day that is more annoying.

 

[Mike W]

So we need to find three wagons for you to make that use undersized wheels?
Mike

 

[Jon Nazareth]

So we need to find three wagons for you to make that use undersized wheels?
Mike

Four with undersized wheels and four with 3’ nine spoke/spoked wheels.

Jon

 

[Mikemill]

Jon

Nick had the idea of having steel rings laser cut for tyers, saves a lot of macheing.

Mike

 

[NickB]

If you have to buy a billet, it is worth making the comparison. I found that for what I wanted, laser cutting was about the same price. If you have a billet to hand, it is more a question of how you feel about the turning job. It is also worth mentioning that the laser cutting process left a thin hard layer on the cut surfaces and a carbide tool was much better for getting through it.

Nick

 

[Jon Nazareth]

Nick
I acquired the billets some 35 years ago, as freebies, and they’ve sat in the rack until now. Luckily for me, I still have enough to machine the sixteen tyres, even after my hiccup, plus a little left over just in case of mishaps. It’s free cutting mild steel and machines nicely. I use a carbide tipped tool and I’m not worried about surface finish at this stage as they are only blanks. Mmm, the turning job is a pain but it has to be done. I’m taking a day off it today as the styrene for the curb rail has arrived and I’m working on that. I’ll go back to the tyres tomorrow and hope that I don’t have another aberration.

Jon

 

[Bigjohn]

Jon…….
Whilst sympathetic I have always regarded lathe ownership as a means of making bigger mistakes more quickly. I have a scrap bin to confirm this thought………the next wrong thought is to THINK it might be useful one day!!!!!!!!!!!!!!!!
John