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Joffre Pt1


KH1

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What a lovely little kit this is turning out to be - certainly no walk in the park but not a climb up Everest with no Oxygen! You have the option of building a compensated or non version and I agonised long and hard over this. Would it be best to go for simplicity and a stay alive or the works that might not work? As I was veering towards non I realised that there were no plain bearings included in the kit and I was out of spares so the decision was made - full wobbly bits! Now, I may have been rather distracted by all this decision making but I heartily recommend that you cut out the chassis frames for the hornblocks before you solder up the chassis! I managed it afterwards but with some colourful language!

 

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The hornblocks were straight forward to put together but rather time consuming with all the polishing to get them to work smoothly. Next up in the league of awkward things were the coupling rods with have to be fully articulated. Again nothing complicated but some delicate soldering was required and all took time. I found it best to solder up the three part rods with the center section still attached to the fret;

 

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Here is the chassis with the coupling rods finished and held in place by jigs with the whole balanced on some metal parallels on top of a piece of glass;

 

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Well it was all worth it as on fitting the real axles and wheels it all turned over beautifully smoothly first time!

 

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And here is one showing the compensating beam which wobbles nicely;

 

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Now on the the gearbox ........

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I seem to have expurgated one little episode from my memory but it all comes flooding back now. Having read on Mark's website that he hadn't realised that the crank pins were steel and thus harder to solder I though I would be clever and fit 14ba bras bolts instead. All was well until, after fixing, I realised that the thread on the bushes was wrong. Trying to get the pins out again involved lots of superglue debonder, a worm drive remover and eventually a drill fitted backwards in the drill press but they all came out eventually.

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