I'd hoped that the chassis construction for Caledonia would be quick and simple. It's got 6 wheels and I wasn't planning on any of that fiddly compensation stuff, so how hard could it be ? Better still, if I stuck the thing on the Hobby Holidays jig, assembly ought to be a matter of a few minutes work ?
First up I laminated the rods. These are very thing in places as per the prototype. No complaints there although I suppose the tags holding them to the etch could have been a bit thinner.
Then I used these to set the axle positions on the jig. The holes were too small for the ends of the jig axles but I reckoned I'd got them set properly anyhow. Despite this I had to move one axle bearing over 1mm inboard by filing the ole out a bit. At least the jig kept things flat I hoped.
Then with the wheels fitted, I tried the rods. They bound. OK, so try one pair of wheels at a time. After lots of hole opening I managed to get these to rotate. Then the third axle. More hole opening. At the ends of the rods, the holes are oval slots rather than round.
The chassis now runs when pushed along the bench but I have a nasty feeling that a new set of rods will be required to get it moving under power. What I can't work out is where the problems come from. Did I set the jig up wrong ? Is there a problem with the kit ? Was I just having a bad day ?