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Recumbent What IS that thing?! Recumbents may be odd looking, but they have many advantages over a "wedgie" bicycle. Discuss the in's and out's recumbent lifestyle in the recumbent forum.

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Old 08-29-09, 09:30 AM   #1
donob08
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Did anyone ever consider a SEMI Tadpole?

I have this, perhaps crazy, idea to provide a little more stability (less twitchy steering) when a recumbent is expecting to have to ride slowly in a congested area.

Replace the front wheel with an extended axle, perhaps 1 foot long. Put a wheel on each end of this axle. This would probably work best with 20" front, 26" rear SWB designs.

Yes, in a small radius turn you would be putting a BIG load on the forks as one wheel did all the lifting. This is not meant for small radius turns.

Ever see such a thing? Is it totally crazy?
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Old 08-29-09, 10:37 AM   #2
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like training wheels?
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Old 08-29-09, 11:24 AM   #3
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Interesting concept.

It would add stability when taking off or at a stop, and I'd think definitely reduce the twitchy steering on a USS. However, the closeness of the wheels I think would defeat the two wheels when running down the road.

It just seems they'd be to close together to do any good and possibly be a hinderance. Also.... talk about heel knock - it'd be brutal unless you moved the fork positioning too.
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Old 08-30-09, 07:11 AM   #4
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Head tube angle would make your steering sorta crazy with a footlong axle in place of a front wheel, I think you'd really hafta lean to turn, or ride up on 2 wheels, kinda hard to visualize...
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Old 08-30-09, 05:37 PM   #5
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I think someone has done it before. Maybe you could figure out how these guys did it?

http://www.piaggiousa.com/innovation.php
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Old 08-31-09, 11:35 PM   #6
donob08
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ya know, Chief, I heard the Italian version of the USPS, would that be the IPS, was going to use these as delivery vehicles to swabies that were listing.

thanks, Don
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