the National Museum of the US Air Force = the best aviation museum in the world!

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if the weather is OK, I may jump out on this Thurs. bikes are now cleaner. I was having some creaking in the frame joint mechanism on the black Liberte. I adjusted the frame latch slightly tighter and the looser but that did not eliminate the creaking sound, so I returned it to the original setting which felt correct. I then lubed the hinge members with LPS1 and that solved it. upon visual inspection the hinge appears to be sound with no evidence of cracking. I ride these bikes hard.
these bikes have two 4-bar linkages; the frame hinge and the derailleur. the hinge geometry allows for totally different functions. the frame hinge swings 180 degrees for folding and over center locking and the derailleur shifts in and out to allow the chain to track to the pedal gear. pretty cool, if you like mechanisms. I find the gearing ratios to be good for me and I use them a lot.
https://en.wikipedia.org/wiki/Four-bar_linkage



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perfect weather for riding a bike, 6C in the morning and 12C in the afternoon, not much wind. pizza and ice cream hit the spot. Joe's Pizza is 60-70's style (my favorite) and it's been there 60 yrs, and it was very clean. I really liked it, and the pizza was good. I asked for well done. I would give it a score of 8.0. that is an excellent score, total bill for pizza and large coke, $16. the pizza alum foil was really thick. I could use it on my airplane somewhere...

https://joes-pizzadayton.com/ whenever you find a pizza place like this, go there! I called about 15 minutes out on the bike, and it was ready a minute or two after I arrived.
a couple things about the Wright Brothers: The Kitty Hawk airplane elevator was very short coupled and difficult to control; that was corrected by extending the distance in Dayton. Dayton, Huffman Prairie, is where they really learned how to fly. it was nice to see an original Wright Brothers bicycle. the brake system was inventive. some sprocket pieces they machined. the chain guard has artistic flair. a simple and elegant bike.
All of the edges of the F22 are exact and sharp, especially the trailing edges. they do not allow to see the exhaust area very well.
A new area recently added is more stuff for kids, that's good! a space shuttle exploration and catches some of the other aircraft.
the 9/11 monument is done well.
Dayton OH is the best place I have ever ridden a bike. Lots to see and do and bike paths are very well maintained and SMOOTH.
for some reason, sitting in the aircraft after the bike ride, going thru the preflight cockpit checklist was soothing and pleasant. I noticed it and enjoyed it.





















































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hey, there's a bike in there!
