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700c / 29" wheel Adult tricycle UNICORN??!!

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700c / 29" wheel Adult tricycle UNICORN??!!

Old 05-29-17, 04:25 PM
  #1  
mandudoguyo
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700c / 29" wheel Adult tricycle UNICORN??!!

Is there such a thing as a 700c / 29" wheel three wheeled (non recumbent) bike for adults?
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Old 05-29-17, 04:33 PM
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That would make no sense. Trikes that aren't recumbents are generally made for transporting things, so they're made with stronger 26" wheels. I highly doubt you'll find an upright, non recumbent trike with 700c wheels.
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Old 05-29-17, 04:38 PM
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Originally Posted by mandudoguyo View Post
Is there such a thing as a 700c / 29" wheel three wheeled (non recumbent) bike for adults?
Sort of. There's at least one company making conversion kits for road bikes.
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Old 05-29-17, 07:44 PM
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Google "British Racing Tricycles"
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Old 05-29-17, 09:23 PM
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No such thing as a three wheeled bike. Or a two wheeled trike.

Not aware of 700c wheeled traditional trikes. Other than previously mentioned British racing trikes. Which are not traditional in US.
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Old 05-30-17, 05:41 AM
  #6  
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Originally Posted by JanMM View Post
No such thing as a three wheeled bike. Or a two wheeled trike.
Well - maybe there is.

Just for fun I googled the legal definition of a bicycle in Missouri law. Turns out my Catrike is a bike.
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Old 05-30-17, 06:02 AM
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Originally Posted by Retro Grouch View Post
Well - maybe there is.

Just for fun I googled the legal definition of a bicycle in Missouri law. Turns out my Catrike is a bike.
True:

Section: 307.0180 Bicycle and motorized bicycle, defined. RSMO 307.180
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Old 05-30-17, 09:01 AM
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Having actually ridden a motorized trike at one point in my life, there is no way in hell I'd ever want to ride a trike that's as high up as 700c wheels would put it. A recumbent? Sure... sitting on top of 3 700c wheels? No way.

Recipe for disaster as soon as you hit just about any turn.
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Old 05-30-17, 09:10 AM
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Fixed gear too.

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Old 05-30-17, 11:33 AM
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Originally Posted by BobbyG View Post
Google "British Racing Tricycles"
The only way I can see to meet the OP's specs. Even in England, I suspect they're custom-made.

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Old 05-30-17, 11:42 AM
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Originally Posted by Retro Grouch View Post
Well - maybe there is.

Just for fun I googled the legal definition of a bicycle in Missouri law. Turns out my Catrike is a bike.
Should have added 'except in make-believe world of traffic laws'. And I understand why the laws are written like that.
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Old 05-30-17, 12:33 PM
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Well Get a Regular old folks trike, change the fork & all 3 wheels from say 26 to 29 , and "bobs your uncle"..
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Old 05-30-17, 12:43 PM
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It wouldn't be impossible to make a 29er Trike.

Replace fork and front wheel with 29er fork and front wheel of your choice.
Get a pair of 29er rims with same spoke count of the rears, get spokes of proper length (if ERD is different).
Rebuild rear wheels.
Remove rear fenders if needed (pretty likely if you're running knobby 29er tires)
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Old 05-30-17, 12:45 PM
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Ooops, fiets beat me too it. I shoulda refreshed after reading thread and before posting

If running road or CX tires it would be even easier. No new fork needed, just get long reach caliper brake on the fork, and a brake lever with matching pull for the caliper. You could probably leave the rear fenders on too. New front wheel and rebuild of the rears still necessary, of course.

This is the kinda thing I was thinking about starting with:

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Old 05-30-17, 01:25 PM
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Originally Posted by TimothyH View Post
Fixed gear too.



Why do I have a desire to try that thing?
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Old 05-30-17, 01:32 PM
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Originally Posted by TimothyH View Post
Fixed gear too.

Is that what you'd call a penny farthing farthing?
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Old 05-30-17, 02:02 PM
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Originally Posted by Milton Keynes View Post
Is that what you'd call a penny farthing farthing?
Or an extraordinary?
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Old 05-30-17, 02:21 PM
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Aren't most trikes 24 front with 20 rear?
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Old 05-30-17, 04:29 PM
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Wheel size - Granny trike or recumbent trike? Most recumbent trikes came with 20" front and rear until a few years ago when manufacturers started introducing larger rear wheels to increase the upper end on the gear range. The one I currently ride has a 700C rear and 20" front wheels. Has the gear range of a regular road bike.

I'd agree with the caution that having three 700C wheels and a high seating trike like most granny trikes makes for horrible handling unless the wheels are set far apart.
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Old 05-30-17, 07:09 PM
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We have no idea why mandudoguyo wants to know if large wheeled traditional trikes exist.
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Old 01-23-18, 05:26 PM
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Originally Posted by corrado33 View Post
Having actually ridden a motorized trike at one point in my life, there is no way in hell I'd ever want to ride a trike that's as high up as 700c wheels would put it. A recumbent? Sure... sitting on top of 3 700c wheels? No way.

Recipe for disaster as soon as you hit just about any turn.
I know this is an old thread but I came across it looking for something else. I thought the record should be set straight for anyone else tripping over it as I did.

I have to tell you, you are very, very wrong.

700c trikes are alive and kicking at Longstaff Cycles in Chesterton, Staffs in the UK and have been built for racing, touring, load carrying and any number of other uses, for both able bodied and disabled riders.
They have been built and ridden for many years all over the world, although they are probably widely felt to be a slight eccentricity on the part of the (predominantly) British builders.

If you try and ride a trike like a bike, regardless of wheel size, it's all going to go very wrong. If you ride a trike like a trike, you'll be fine. Different skill set.

Actually, a trike on bigger wheels is more stable not less so, as the CoG of the rider / bike system is not significantly different to a small-wheeled trike (although it is higher, of course, than a recumbent trike) but it is lower, relative to the wheel centres, which is what matters in terms of the stability.

Correct geometry and materials use make a trike perfectly rideable on pretty much any size of wheel, so long as the rider knows how to ride a trike - and pretty much unrideable, if they insist on treating it like a bicycle ...
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Old 01-24-18, 05:38 AM
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but good luck finding one...

They look like fun but never seen one IRL.
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Old 01-24-18, 07:09 AM
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Originally Posted by TimothyH View Post
Fixed gear too.

Hmmm. Try riding that down a steep hill with switch backs.
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Old 01-25-18, 05:20 AM
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The one I am getting has 24" wheels. I'd love bigger wheels, but when I used to do a bike instead of a trike I had to get a specialized frame to make it work due to my short stature, not as easy with a trike.. I'll be at the lowest seat setting of the 24" trike as it's manufactured (I rode a rental for a week).
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Old 01-29-18, 04:51 AM
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Originally Posted by khyricat View Post
The one I am getting has 24" wheels. I'd love bigger wheels, but when I used to do a bike instead of a trike I had to get a specialized frame to make it work due to my short stature, not as easy with a trike.. I'll be at the lowest seat setting of the 24" trike as it's manufactured (I rode a rental for a week).
It depends on what you are prepared to spend.

Because BB height in a trike can be whatever you need it to be, and front wheel / foot overlap is not a massive problem, almost any length of seat tube / reach to the handlebars can be accommodated. It's better if front wheel overlap can be avoided, of course ... but not the close-to-necessity it is on a bicycle.

At Longstaff, we / they have built trikes with full-sized wheels with incredibly low BB step-over heights / saddle heights for riders with specific disability - it's not a low-cost thing to do - but nor is it the close-to impossibility it is on a bicycle.

As mentioned above, you kind of have to forget bicycles in trike-world. It's a bit of an adjustment to make!
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