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  #1  
Old 08-03-2016, 09:35 AM
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Alex Meade Longbike

Not recent, but eye candy for a slow day. Designed and built to handle four strong adults. Double disc brake on the front, single large disc on the back, lots of custom engineering and construction. Wheels are tied and soldered. One set of couplers allows it to be transported on top of a car - with specially built racks, of course!

Alex
http://www.alexmeade.com
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Old 08-03-2016, 09:51 AM
54ny77 54ny77 is offline
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hot damn! you built that?????

that thing is bonkers! could you imagine 4 guys like sagan, voight, cancellara, cavendish, etc. on there?

tell us a little about the engineering of that rig. how on earth did you come up with spec'ing the drivetrain, sorting all of that out, etc. does it shift & brake well with that length of cabling? presume you're using 1 or two splitters on long tandem rear brake & both derail. cables? can you post some close up shots of how you sorted out the dual front disc brake cabling?

boy that sure looks like fun. thanks a lot for posting your builds.

Last edited by 54ny77; 08-03-2016 at 09:57 AM.
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Old 08-03-2016, 10:04 AM
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It's really fast. Even with four "normal but in-shape cyclists" I've done a century averaging over 25 mph. Braking: well, even with three huge discs it's still hard to stop 700 pounds going down the road. I'd not recommend a hilly ride or a big pack of cyclists. The shift cables are split. Shifting is trouble-free. The rear brake starts with a cable at the front, transitions to a rod (with a splitter), then back to a cable in the back. With only cable, there was too much stretch over whatever the length is - maybe 17 feet of cable? The drivetrain is simply the stoutest stuff I could find, with an eye toward easily replaced bearings. Some parts just didn't make it and needed to be beefed up. For example, the front three bottom brackets are standard Shimano road BBs, but the one in the back was destroyed in less than 60 miles and is now Phil.

Thanks for your interest!

Alex
http://www.alexmeade.com
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Old 08-03-2016, 10:12 AM
54ny77 54ny77 is offline
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that is just a monstrous amount of steel and welding. how long did it take to build? innovative fork design too.

so awesome. it's just fun to look at. can't imagine how fun it'd be to ride. was it fun to build as well?

got any more detailed photos?

Last edited by 54ny77; 08-03-2016 at 10:14 AM.
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Old 08-03-2016, 10:33 AM
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It hung in my shop under construction (and as a conversation piece) for close to a year. I worked on it between other frames. It was a lot of fun to design and build, but I'll admit there were times when I thought I'd never get it finished. It was a huge amount of work!

Thanks!

Alex
http://www.alexmeade.com
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Old 08-03-2016, 01:11 PM
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icepick_trotsky icepick_trotsky is offline
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Where on earth did you source that double disc front hub? Custom made?
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Old 08-03-2016, 01:15 PM
54ny77 54ny77 is offline
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yeah i was wondering that too.

soooooo many cool details on here that bike deserves its own thread (here or elsewhere), if the builder has the time to provide it.

it's an amazing piece of engineering & craftsmanship. s&s coupled sections, no less.
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  #8  
Old 08-03-2016, 01:19 PM
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Quote:
Originally Posted by alexm View Post
Braking: well, even with three huge discs it's still hard to stop 700 pounds going down the road. I'd not recommend a hilly ride or a big pack of cyclists.
this is a great bike, and a very worthy edition to the custom section here!

regarding the quote above, at some point, you have to entertain the idea of motorcycle brakes maybe?
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Old 08-03-2016, 01:59 PM
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. . .

Last edited by pdmtong; 08-07-2016 at 10:56 PM.
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Old 08-03-2016, 03:30 PM
EDS EDS is offline
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Awesome and terrifying at the same time!
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  #11  
Old 08-03-2016, 03:46 PM
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Quote:
Originally Posted by icepick_trotsky View Post
Where on earth did you source that double disc front hub? Custom made?
I got lucky on the front hub. I was all set to make my own hub and on a whim called Phil Wood. They just *happened* to have one. It's a nonstandard OLD, but since I was making the fork anyway, perfect.

Alex
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  #12  
Old 08-03-2016, 03:49 PM
54ny77 54ny77 is offline
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Could you imagine doing laps on that in the park with a few strong guys?

50 mph on the east side backstretch, easy.

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Awesome and terrifying at the same time!
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Old 08-03-2016, 03:52 PM
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So cool!!
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Old 08-03-2016, 04:02 PM
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That is amazing!


But my mother never told me that Papa Bear and Mama Bear had three Baby Bears....
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  #15  
Old 08-04-2016, 05:10 PM
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Originally Posted by pdmtong View Post
I would love to understand the tubing choices and any reinforcement approaches that enable the frame to withstand the weight and watts. same goes for wheel/tire choices.
Some of the tubing is bicycle-specific. The long tubes are aircraft tubing. Diameters and wall thicknesses were partly based on my own experience, partly based on what I was able to get, and in large part based on talking to others who've been down this road before. Experience trumps everything! As an example, the seatstays are MTB unicrown fork blades. The boom tubes and down tube are huge, and ovalized as needed. Long tubes are reinforced externally where they're pierced by the seat tubes. Wheels are 48 spoke (rear, anyway), Phil hubs, stout 700c rims, spokes tied and soldered. Tires are Continental 28mm Ultra Gatorskins at 120-140 psi. Unfortunately there are simply no bicycle components intended or rated for this sort of machine, so some parts will work and others will wear out quickly.
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