Thread: Discussion Some Pics
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Old Nov 05, 2012, 07:02 AM
rockhound1218 is offline
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United States, CT, Meriden
Joined Feb 2010
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Yes you are correct,
Without using an accurate means to hold the central hub, a concentric wheel will not happen.
The "pins and shims" method did not produce acceptable results....a more stable jig was required.
The more stable the tighter the spokes can be laced.

I spun the jig using MDF board on my lathe. and was able to spoke both sides of the wheel without removing it from the fixture. Even using the "better jig" keeping even tension on the spokes was critical. Plucking each spoke evens out the tension before locking in position with CA or Epoxy.

A few years back I stress tested up to 30lbs on a pair of 3" wheels. I used guitar strings for the spokes. I guess it's the "side load" that causes most failures. I haven't figured a way to accurately measure side force loads. But that style of wheel worked well on a 2lb. Plane.

Luckily most WW1 Planes had the shrouds covering the wheels so the spoked effect can be faked.
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