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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 09-02-10, 08:48 AM   #26
daveF
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David, what did you end up buying? My new one is due in tomorrow?
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Old 09-02-10, 11:40 AM   #27
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Actually this is not a fair statement, some manufacturers spend years getting their bikes evenly distributed and with the right geometry, the Reach by Pacific is a good example of this, they have spent years perfecting this, but unfortunately for them very few people think of ride quality when buying/recommending a folding bike.


Its a pity, since we spend more time seating in the bike than folding it.
it's not supposed to be the same, weight distribution should be somewhere around 40:60 front to back.
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Old 09-02-10, 12:07 PM   #28
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Alex Wetmore once wrote that he didn't like the handling of Primo Comets in wet pavement. The context of the statement was that they had this reputation; but I never heard of that reputation from anyone other than him.

I think it is because your tires were under inflated. Wider tires, all things equal, will have better cornering traction. I don't think that the small wheels have much of an effect.
Have had no issues running my Comets at high speed in the rain... they sit under my P20 road / touring bike which is a very stable machine but they do need to be run at nearly max psi.

The contact patch on the 1.35 is still quite good at high psi so you probably have more contact on these than you would on a 23:622 road tyre.

Would put this down to under inflation and some unfamiliarity with the new bike and how it handles and should feel... once you get enough miles on a bike and develop some intimacy you will know when things are not as they are supposed to be.
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Old 09-02-10, 01:41 PM   #29
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OP said issue was with 451 BF and 1,125 " ,28 mm wide comet slick tire , and it washed front out on a wet curve..
so my saying I can take a hand off my Brompton's M handle bars and it is stable,
while decending a straight down hill has little significance .

rear came out from under me in the wet, not crossing rail road tracks at a steep enough angle ..
putting my foot off the pedal to be ready to catch myself was a quick reaction, didn't touch the ground
but there was some soreness, for a few days , being 62 is different than 32..
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Old 09-02-10, 02:43 PM   #30
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Also learning that it might not be the same speed and line you took with a different bike seems important.

Like I said, this is a path I ride almost every day, and the bridge itself is brand new- no oil, just pure white concrete elevated about 20-30 feet over the road...

No panic braking- no time. Just "oh crap the front tire is washing out is it gonna catch nope going down please don't break my teeth please don't WHAM ouch no teeth broken"
Yes, it does happen so quickly.
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Old 09-02-10, 08:06 PM   #31
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No pictures on this BF thread so I'll add one :)

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David, what did you end up buying? My new one is due in tomorrow?
Not hijacking your thread buck-50 but here's a pick of my soon to be BF Pocket Llama I got from ebay.
Attached Images
File Type: jpg BF_PL_01..jpg (61.0 KB, 15 views)
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Old 09-03-10, 06:55 PM   #32
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I wiped out like that recently too, and I know my tires were properly inflated. I simply was going too fast for a turn on a wet boardwalk. Bike was fine, but I needed a few stitches over my eye - my glasses were pushed into my face. Glad I had a helmet on.
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Old 09-07-10, 12:16 PM   #33
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Not hijacking your thread buck-50 but here's a pick of my soon to be BF Pocket Llama I got from ebay.
That's very nice! Congratulations. My Pocket Rocket arrived this past Friday. I really love it, so much that I gave my Litespeed Classic to my son!
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Old 09-07-10, 01:45 PM   #34
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20" wheeled bikes are less stable than larger-wheeled bikes. There might be handful of exceptions -- e.g. touring folder vs super-aggressive racing bike -- but even then I have my doubts.

On the other hand, 20" wheels have a much tighter turning circle. So, I'd imagine that you'd do better on some turns with 20" wheels, and better on other turns with 700c wheels.

I'd say though that you would've wiped out with any bike outfitted with slick tires. Wet surfaces are slippery, and I don't believe that wheel size has much of an impact on how well the tire grips the riding surface.

I seriously doubt that in the future you will crash more with the Bike Friday than you would with any other bike.
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Old 09-22-10, 02:36 PM   #35
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Just finished reading the Bicycle Quarterly review of the 15k moulton. One thing that stood out- Jan also wiped out in the wet on a corner he'd ridden dozens of times on other bikes riding primo comets.

It's interesting because 1, his wipe out sounded exactly like mine and 2, we ride similar "regular" bikes- low to medium trail randonneurs with 32mm tires...
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Old 09-22-10, 05:07 PM   #36
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Besides this, what were the major points of the article, especially opinions? Did they think the Moulton is over-priced unnecessary trash or worth the cash?
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Old 09-22-10, 07:14 PM   #37
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He wanted to be impressed. He wasn't. It was the best handling small wheel bike he'd ever ridden, but it didn't compare to a full size bike. It was slower, even in the hands of it's owner, than a full sized bike- they threw the owner on a 650b map randonneur and he beat his best time on his favorite loop by several minutes.

He also pointed out that suspension design has evolved by leaps and bounds since the moulton design and it's showing it's age.

There was a lot about moulton himself, though as I read it, he came off as one of these guys who tries something once, decides that he can engineer a better solution and comes up with something overly complex...aka a typical industrial designer.
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