Discussion in 'Classics' started by HIGHRIDEZ, Feb 9, 2017.
anything pietenpol paste here. Im starting my very own pietenpol build
I love the wire wheels that some builders are putting on their Piets. I build bicycle wheels from time to time, so those wheels look like a fun side project.
Poetry in motion... every time I look at this one I want to drop everything else I'm doing... I have two model A engines and this plane just makes me happy to look at it!!! (I would build the Scout however)
Wire wheels are nice. Also nice, IMHO, are wheels with star patterns on them, which could be on covers over the wire wheels:
I think I've seen some that are prettier than these. Maybe they left out the part in the middle. I think they looked a bit like these on a Sky Pup:
For wire wheels, if you want you can try exotic patterns:
Here's another weird style, though I'm guessing it's a bit harder to true. Notice how the spokes wrap around each other:
If you're not using a hub mounted brake, you can just use radially spoked wheels, straight out from the center. These can all go on the outside of the hub, which is like making the hub wider. But a hub brake might cause enough tension to damage something.
The Piet isn't my pick, or at least not consciously, but there's something fascinating about it.
Details? Which plans? Wooden fuselage or steel tube? Powerplant?
Wood is good. I bet you'd love the MiniMax line of airplanes as well, free plans online if you want to check it out.
The Pietenpol is great! Lots of them built and the owners are passionate.
If I were you I'd spend a few months making the small metal fittings or wing ribs. Start out simple and just have fun. Enjoy the process.
Welcome to the forum.
My daughter Emily at the EAA museum next to a Pietenpol.
I've never seen a twisted spoke pattern used on anything heavier than a bicycle. It would be quite a challenge getting uniform twist patterns in larger dia spokes. I would pass on the opportunity to be the first to do it on an airplane. Too much work at risk.
You could always anneal the spokes. ;-) Or use kevlar. Just the thing for a 90 year old design.
It would definitely increase the amount of homework required. Not something I would ever do. On the other hand, you could make a cart to test the engine, and redrive if present, and use those wheels. Run around the airport for 20 hours making turns and going over bumps.
I think I would like spoke wheels on an antique airplane design but I try to be cognizant of reality. The fact is spoked wheels are not tolerant of side loading, somethat that happens quite frequently with airplanes. I can't imagine flying something like a Piet in a challenging crosswind situation but still have to reconcile my mediocre skills.
The thing with an airplane like the Piet is that the only real purpose they serve nowadays is to have fun. The crosswind you describe doesn't sound fun at all to me so I'd probably be doing something other than flying that day. Of course, if I were going to just fly the wings off an Air Camper I would probably put Cub wheels and tires on it just in case I got caught out in un-fun weather.
I would be tempted to try some spindle mount wheels like you see on the front of sand rails and dragsters.
Most of them wouldn't look right, but there are some that wouldn't look out of place.
It's true that skinny bicycle wheels don't tolerate much side force. But many automobiles have had spoked wheels. In fact, you can still get them:
A bit much for a Pietenpol, I admit. But if you use a wider hub, your wheels can take more side force. Hubs can be quite simple, and you could get 4 half hubs to simplify things and reduce the cost. Make them a light press fit on some kind of metal tubing to keep them aligned. You don't need a heavy press fit because the tension of the spokes will take care of it. There are some other dodges to help, though I don't know if you can actually get them retail. For instance, if the rim is moderately wide, and flat on the inside, you could make the spoke holes alternate. Some would be closer to the left side of the rim, others to the right side. Then run spokes from the left side of the rim to the right side of the hub, and vice versa, alternating.
Again, if you use a hub brake (disc, drum etc.) make sure the spokes cross so that they can transmit the torque to the rim without huge increases in tension. (Sorry, but I felt it worth mentioning.)
Both look very nice!
these remind me of the old Bendix wheels:
but not these:
Any further info regarding the set referred to as "perhaps these" ?
That's the only Piet I've flown and can confirm it's a lovely flying airplane.
OK, those are ATV 10x2 wheels by Direct Drive and with the smooth tires they're 14.5" dia. I don't know if they are big enough (or strong enough) for a Piet. The closest I can find in the 15x4 VW spindle mount is five spoke CMS brand, kind of expensive I guess because they're cut out (I don't work for these people...), you'd have to paint them black to be more like the others:
im using a kit from http://www.aircraftspruce.com/catalog/kitspages/pientenpolaircamper.php hope fully using chevy corvair
most wheels iv`e seen for piets have been modified motorbike wheels
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