Hi again other / lewis
Well spotted on the 653, but I think the guy will have bigger issues than the type of tubing he's using my friend. At speeds of 100mph, the bike will vibrate, put excessive forces on the axles, bearings, rims, tyres, headset area, infact just about every area you can imagine. Until someone rides a bike at 100mph+ no-one is really going to know for sure where engineering & technology will meet reality.
1 of the first rules of unexplored engineering is always expect the unexpected, then over-engineer for it
I for 1 have spent yet another day poring over the details of "what to expect & how to meet those undefined X factors". I find the concept of what he has said truly remarkable, and his finding/discovery is genuine genius born of a persistance to find words for what he knows he feels when riding HIS bike. I absolutely wish the guy well in his quest, but not if he needlessly wastes his life trying to "knock up a machine in his kitchen to attempt it", that is suicide. A crash on a motorcycle at 100mph hurts bigtime (ask anyone who's been there), but a crash on a bicycle at that speed is like watching Campbell trying to walk away from his 600mph boat crash. He won't be able to get booted & suited like motorbike riders thats for sure.
The guy has got traction issues, surface issues, heat issues both ambient & generated, absorbtion of stresses & strains within the bike inself, it really is a long list to compile & then check off before even trying. Like I was saying in my earlier post, "I see a man with health issues pursuing a perfectly good & grounded theory BUT without the backup or tools to get there in 1 piece. I'd love to hear from anyone reading this what they think about the "theory itself & the engineering needed to get there". I also agree that a man in his 40's is pushing it somewhat in terms of physical ability.
Here is what I've been working on for a few years (some things in theory only).
electromagnetic hubs (no bearings)
electromagnetic headsets with built in shock absorber
NON parralelogram sliding rear mech
inverse brake levers for elctromagnetic brakes (non destructive to the rims)
aerodynamic perfection of the frame (no tubes as currently used)
I guess what I'm saying is that, "even with what I've been researching & developing, his theory opens a pandoras box of new ideas needed to meet the challenge, new ideas I had until that post hitherto not given consideration to because I was confining my own ideas to "modification of adaptable parts used in the here and now". It's just not possible to design a mass market bike that can do 100mph+. My goals lay in "the ability for the novice to rack up 100mile + rides without undue training, ie: take the sting out of distance rides. I'd love your thread to pick up a head of steam because the "Obree Teardrop Theory" is very worthy of discussion amongst all types of cyclists, or maybe that's just me
His dream has certainly caught my imagination, so thanks again for the great post, I had no idea that the world land speed record for a pushbike was just 82mph, well under the 100mph mark. In real terms 100mph is not high, but the technology to get there will now have to be pushed to meet that mark, and that can only be a good thing.
All the best to you both, yours Laz.
PS: electromagnetic propulsion via the hub is not as crazy as it seems, quite the opposite infact, as is equally the notion that a 60tooth top ring can be used for the same energy output as a 42. Magnets are very special