Yes, it is time to call a halt. The Peco model looks pleasant and unassuming; few observers will notice the mistakes; and I will gain little by adding fresh detail.
All modelling needs compromises, and the Peco LK-735 yard crane seems to have more than its fair share. I have altered the model to improve on some, but I left it too late to improve on others.
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Here is a list of details I know about this kit, to try to wrap up the last 35 posts in a coherent sort of way:
1. The use of a rolled steel joist (H beam I think) for the jib is unusual on this sort of crane, and I have used a length of maple instead.
2. The crane seems very large for a hand-operated machine and I have shortened the jib to a scale 24 feet.
3. The model takes its two jib stays onto spigots below the top pulley leaving the top part of the jib looking vulnerable to bending under load, and I have fitted longer stays reaching to the spindle of the pulley.
4. The supplied hook resembles something cut out of flat sheet material not a forging, and I have put a modified Meccano hook in its place.
and . . .
5. The model includes a peculiar “flanged area with a hole” near the foot of the jib stays and I haven’t found out what this represents.
6. The kit omits intermediate rollers to support a cable or chain between drum and top pulley, though these are straightforward to add.
7. The teeth on the gears are very coarse.
8. The mechanism seems unlikely to represent any prototype: the large gear wheel provides no mechanical advantage; the reduction ratio for the cranking handle is too small; and the effect of the brake (on the spindle of the winding drum) will be minimal.
Item 8 is of course the killer.
The model would look better and gain some mechanical credibility if the winding drum was on the spindle with the large gear. This would need alterations to other parts and I would want to prepare for this at the very beginning of the build. This arrangement needs some rollers hung between the jib stays (like the Ruthin crane), which I made and fitted but subsequently removed.
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This should sit very happily on a layout until I decide I want something better, perhaps the Skytrex model.