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-   -   Bicycle Built for a Piano. (http://www.bikeforums.net/utility-cycling/913974-bicycle-built-piano.html)

Artkansas 09-20-13 12:49 AM

Bicycle Built for a Piano.
 
Here's a monster made for hauling a grand piano and acting as a stage. No less than 14 wheels and able to carry an 800 KG load. It's a goliath of a cargo bike.

http://www.werkbox3.de/wp-content/oq...914_144943.jpg

There are more pictures with the article. Cargo Bike Stage at the Munich Street Festival

Juha 09-20-13 01:00 AM

I wouldn't want to be the guy who has to tune the grand piano after they park it for a concert.

--J

chaadster 09-20-13 12:42 PM

A more sane setup, for an upright, which Mr. B and his band used to haul their band equipment across Michigan for a tour they called "The Joybox Express." Two bikes lock their forks onto the rear for added push.

http://www.annarbor.com/assets_c/201...x311-46260.jpg

Jeff Wills 09-27-13 09:31 PM

Not bad. This setup only carried 1000 lbs:
http://hpv.tricolour.net/organ-trailer.html

(Electric Hammond organ on the trailer.)
http://tricolour.net/photos/2004/09/18/med/10-48-39.jpg

fietsbob 09-28-13 07:29 PM

But ... Bi-prefix, being 2. you don't think the wheel count , past 2 , counts ?



.. any kind of hill and they might need to add a winch to the front, ?

like taking the 2nd anchor upstream in the row boat , and dropping it

then like sailing ships trying to go up river, against the current.

pulling the whole rig with the winch.

StephenH 09-28-13 07:58 PM

Reminds me of this one:
http://www.youtube.com/watch?v=8K94GECXlvQ

ka0use 10-14-13 04:10 PM

Quote:

Originally Posted by Juha (Post 16085388)
I wouldn't want to be the guy who has to tune the grand piano after they park it for a concert.

--J


no doubt!

turbo1889 10-15-13 12:30 AM

Quote:

Originally Posted by fietsbob (Post 16113534)
But ... Bi-prefix, being 2. you don't think the wheel count , past 2 , counts ?



.. any kind of hill and they might need to add a winch to the front, ?

like taking the 2nd anchor upstream in the row boat , and dropping it

then like sailing ships trying to go up river, against the current.

pulling the whole rig with the winch.


Yes, you are correct that its a cargo pedal cycle but not a cargo bicycle. "Bi-" does indeed mean only two wheels

As to climbing hills, that all depends on the gearing, if its got standard bicycle gear range and doesn't have a mid-transmission to really drop the ratios for hill climbing then you are correct that its a flat ground only proposition. Same goes for going downhill as far as the brakes, I'd want brakes on all 14 wheels of that beast, probably hydraulic disk brakes and then use a car brake master cylinder to activate them all together (difference in piston capacity should allow a single car size master cylinder to activate 14 bicycle size calipers on the wheels). I wonder if all 7 rear wheels are powered or if its only the three of them that are lined up with the three seats. If I were building it I would put a common three step mid-transmission under the cargo bed with a 1,000% gear range with a top ratio of 2:1 (pedals go around once and drive wheels go around twice) and a bottom ratio of 1:5 (pedals go around five times and drive wheels go around once) driving all seven rear wheels with single speed freewheels with chain-ring mod-mounts to put big 40+ tooth drive sprockets on the rear wheels to keep the chain stresses down while allowing for high torque and allowing differential action on the turns by the wheels on the outer-side of the turn overrunning on their freewheels.

Do all that and it would add quite a bit of complexity and time and some expense (14@ hydraulic disk brakes and wheel hubs compatible with same would be most of that expense, the gearing components and a car master cylinder and tubing and adapters would be the minor additional expense) but it would make it a true cargo carrier that wasn't just a flat-land only rig.

fietsbob 10-15-13 08:42 AM

I'm thinking the sponsorship from Rohloff had a indication as to the gear drive scheme..
and I thought I only saw 3 saddles in back .. all the other wheels load sharing..

I expect the route is pretty flat.. at least the Pub-"bike" has the Patrons all pedaling .


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