Author Topic: 634% 18 speed 'hub' gear  (Read 2144 times)

onmybike

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634% 18 speed 'hub' gear
« on: September 04, 2010, 01:54:01 PM »
Now here's something...
http://www.pinion.eu/

Any good translators out there? My German's stuffed.

Paulson

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Re: 634% 18 speed 'hub' gear
« Reply #1 on: September 04, 2010, 03:07:26 PM »
http://www.pinion.eu/en/produkt.html

Just click the 'en' link and it's all in English!!!

PINION P-1 Gearchange


18 fully usable gears with no overlap.

Constant gear ratio steps with an optimum 11.5% increment from gear to gear.

Overall gear ratio: 634%. This is unique and outclasses all other bicycle gearing systems.

Maintenance-free design insusceptible to environmental conditions, such as dirt, water, mud, sand, branches, etc.

No protruding gear components. No more rear derailleurs becoming detached, chainwheels and sprockets getting bent or chains jumping off.

The gear unit is extremely compact. Paired with a small chainwheel, the system offers terrific ground clearance.

Positioning at the centre of the bike + lightweight rear wheel with just a single pinion = maximum riding dynamics. For full-suspension bikes, this means more spontaneous response from the suspension and better grip.
_____________________________________________________

blair

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Re: 634% 18 speed 'hub' gear
« Reply #2 on: September 05, 2010, 10:31:23 AM »
Looks good, but "Made in Germany"+"Non-standard frame"=>Expensive!
Also, note the last sentence of the Background section:
"It won't take us much longer to progress from the prototype stage to series production but it'll be worth the short wait."
Many a good product disappears between prototype and production.

sloe

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Re: 634% 18 speed 'hub' gear
« Reply #3 on: October 24, 2010, 08:24:45 PM »
It would need to be pretty chunky to cope with the torque. Someone correct me if I've got this wrong but the best place for a gearbox is at the back wheel because the torque is already reduced by the ratio of chainwheel to sprocket so the gearbox can be built lighter.