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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 03-20-07, 02:57 PM   #1
EriktheFish
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Downtube Full Suspension vs No Suspension

I'm ready to buy one of the Downtube bikes and do the Cruzbike conversion to make it a recumbent like SesameCrunch did. I'm having trouble deciding between the FS or NS. I'm mainly going to use this bike for air travel and then biking. NS seems lighter and smaller, but FS is attractive to have on a short wheelbase bike. Apprehension toward FS from extra weight/size and fear of "pogo-ing" especially when climbing steep grades. Is this much of an issue? Can a higher quality spring/shock be added to rear? Is the FS a dog performance-wise compared to NS? (I'll get 2 more of same for wife and son for trips)
Reports from folks that have ridden both appreciated.
Thanks

Last edited by EriktheFish; 03-20-07 at 06:44 PM.
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Old 03-20-07, 03:07 PM   #2
Pine Cone
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I have the DT VIIIH so I can't speak to either frame directly, but I do have a full suspension Vision recumbent.

I would hate to ride the recumbent without full suspension. No problem with pogo-ing since you can't stand up, and because you can't stand every pothole and bump jars your rear. The rear suspension really helps make for a comfortable ride.

I think the suspension makes your wheels and rims last longer since the shocks absorb a lot of energy which otherwise would be transmitted to your tires and rims.
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Old 03-20-07, 08:37 PM   #3
SesameCrunch
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I think the Full Suspension is more desirable in every respect except for portability. If you do want to do air travel, it's going to be challenging. First, the FS by itself is difficult (not impossible) to fit into a suitcase. It'll take some disassembly of the rear end. With the Cruzbike kit, you'll need 2 suitcases for sure. Secondly, the combined weight of the Cruzbike and FS will result in a bike in the high 30's weight-wise.

And be aware that the Non-Suspension is 3 inches shorter that the FS. It'll impact the ride quality.

Would you consider the Front Suspension model, which is in-between the two, spec-wise? It's got the same longer wheelbase as the FS. It has a front suspension (weight distribution on the Cruzbike will be close to 50/50). That's the base bike that my conversion is built on (before I took off the suspension fork).

Finally, I must say that I have not missed the suspension on my bike. I ride paved roads only. I have my tires at around 60psi, and it rides just fine.

All in all, it's a tough trade-off between portability and comfort. Unfortunately, there's no objective way to resolve this dilemma. Good luck with your choice!
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Old 01-27-08, 06:05 PM   #4
makeinu
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Quote:
Originally Posted by EriktheFish View Post
I'm ready to buy one of the Downtube bikes and do the Cruzbike conversion to make it a recumbent like SesameCrunch did. I'm having trouble deciding between the FS or NS. I'm mainly going to use this bike for air travel and then biking. NS seems lighter and smaller, but FS is attractive to have on a short wheelbase bike. Apprehension toward FS from extra weight/size and fear of "pogo-ing" especially when climbing steep grades. Is this much of an issue? Can a higher quality spring/shock be added to rear? Is the FS a dog performance-wise compared to NS? (I'll get 2 more of same for wife and son for trips)
Reports from folks that have ridden both appreciated.
Thanks
Erik,

Did you end up doing the Cruzbike conversion? I'm curious how it would work out with the FS.

The FS has a level monotube compared to the sloping monotube on the other 20" Downtubes. I wonder if this would make it possible to leave the seat on the Cruzbike conversion when folding. See here:




With a nice double legged kickstand it might make a good convertible chair-bike. Cover up the Cruzbike drivetrain and you might even be able to tell belligerent security guards it's a wheelchair. Who needs (folding) bike parking? Throw the extra chair out in the hallway for someone else to deal with and roll your chair-bike to your spot.

Last edited by makeinu; 01-27-08 at 06:58 PM.
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Old 01-28-08, 09:42 AM   #5
defjack
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I did a Cruzbike Downtube NS and it was a fun bike.I think the longer wheel base would be even better.If the roads you ride are bad go with suspension. You can see a few folder conversions on the Yahoo Cruzbike forum. Jack
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Old 01-30-08, 03:58 PM   #6
makeinu
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Here's another doner that might be able to fold with the Cruzbike seat on:

It's a Yeah bike. Frame is hi-tensile steel and probably extremely heavy. The Cruzbike kit is really designed for Y-frames anyway. There are some other cheap Y-frame folders on ebay that fold similar to this one, but none that scream quality (there's one brand called Bazooka and another called SRS...both have big wheels which the Cruzbike kit is also designed for).
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