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ullypug

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Those boffins at CERN have just confirmed the smallest known element. No it's not the Boson-Higgs particle, it's the distance between the jackshaft and the rear of the step assembly on the High Level Kit if you're building in P4...

 

The important bit is however small, it is enough.

 

Wheels quartered up and trial assembly photos attached. All well so far and it doesn't bind when I push it up and down the workbench! Have gone past the point of no return and loctited the final gear wheel onto the axle whilst waiting for the epoxy for the copperclad pick up points to set.

 

Will concentrate on detailing the body now until the powered test (always a nervous time) but all is well (apart from me that is - snot does not make an effective flux in case you were wondering).

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Blimey, Ullypug

 

That IS thin! Nice work on the build: looks very clean compared to anything I can concoct. And a nice bit of photography too - especially for someone in thrall to the lurgee!

 

Cheers

 

Jan

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I like the way the gearbox drives both the rear axle and the jackshaft axle. Good work UP, btw, sorry to hear about your snotty state...

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I like the way the gearbox drives both the rear axle and the jackshaft axle. Good work UP, btw, sorry to hear about your snotty state...

The really clever bit is that the jackshaft and the flycrank aren't connected. They just run adjacent. As the rear and flycrank axles are driven off the same gear train, they keep perfect respective positions.

 

It turns an 0-8-0 into an 0-6-0 which makes quartering a lot easier.

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That really does look good :icon_thumbsup2: As I said before, I do like these High Level chassis. The 6-wheel ones that I've built all have a rocking front axle and twin compensation beams between the middle and rear axles, acting on the hornblocks. This one looks different. It appears to have a central compensation beam between the middle and front axles, and something different from the usual High Level hornblocks on the rear axle. Can you explain how it works, please?

 

The really clever bit is that the jackshaft and the flycrank aren't connected. They just run adjacent.

So the rear pair of rods to the flycranks are soldered to the rear section of the main rods at the rear wheel crankpin boss, but just float over the actual flycrank? Cunning :excl:

 

Nick

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Can you explain how it works, please?

 

Nick

 

I'd be happy to. The rear axle is fixed and the front and middle are compensated on a single central beam. The rods have a forked joint ahead of the central crank pin and as you say, are a single piece from there to the rear two axles and jackshaft. The gear box is a 108:1 2 stage affair with the previously mentioned extension to keep the jackshaft syncronised with the rear axle.

The step assemblies are separate to the chassis and fix to the underside of the body. The etched overlays for footplate and valances just glue in place.

I did some work to the body yesterday evening and I'll post some pics later.

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Nice work, I do like the solution high level have used for the fly cranks, the wobbly mainline split axle doesn't really convince me.

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I'd be happy to. The rear axle is fixed...

 

Thanks. That explains all. I'd not interpreted some of the earlier photos correctly as it looked to me like the rear hornblocks could move.

 

Nick

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