Yup, I'll back up that analysis. We have had extensive experience over the last 25 years with all manner of small wheel bikes (bit of a passion with me ;-) ...
Mr Richard Horrocks
rkhorrocks@...
May 1, 2005 7:57 am
5359
Hello, Regarding your data below this is what I was referring to when I first posted the shimmy issue on this forum. I have only experienced this on the...
Hi, You say " only experienced this on the earlier Birdy Reds." 1. How many "Reds" did you test and find a shimmy? 2. When you speak of "Reds", which year,...
Hi Bob, It was with 2 x Birdy Reds 7 speed approx 2001. Never had this problem with a 2000 Birdy Blue all UK spec. A few people have experienced shimmy on...
Patrick What was the tire spec on the Birdy Red"s" in question? What was the tire pressure when you rode them? Do I understand that these comments are from...
... Richard, I suspect there may be more than two. I had no experience of shimmy until I got a Birdy, so I don't have a reference for correct use of the word...
... Hi J.Kim, I think that would work. Have you tried a yellow elastomer? it gives more travel for a given bump. The Birdy elastomers are probably the cheapest...
Thanks Martin, I have been using a yellow one for 3 years. On the way I lost one while I was in S.Korea and got the replacement from the Birdy Australia. They...
... Sorry Bob, maybe I worded my message a bit too strongly. I'm not sure I would call it a design fault, in the sense that RM should do a recall or anything...
I don't know if anyone subscribes to Kevin Kelly's Cool Tools Web site, but I recommend it. Today's addition put a whole new spin on the old Fix A Flat...
Hello All, I test rode a birdy blue today with a sram shifter and 5 speed hub and I thought the bike rode great. The only problem for me was the handlebar...
Hello Mike You can put an adjustable comfort stem on the most any Birdy that will give you more choces of changing to the postion you prefer. It is stock item...
David, I probably got in wrong, I rode alot of folders yesterday and could have easily mixed them up that combined with the fact that I am very new to folding...
Hi Mike, I have several other bikes but they are collecting dust these days....I am less a cyclist and much more a rider both in style and need and the Birdy ...
One of the things mentioned in the past was fitting the rear elastomer with an automotive "Hose Clamp", or perhaps more than one (say, top and bottom of the...
How about a different stem that has an adjuster to the rise? Like this: http://www.lickbike.com/productpage.asp?PART_NUM_SUB='1069-20' Bob ... From: "mmlaing"...
I'm all for design "improvements", John, and I'm sure R-M are too. They have certainly pursued this ideal since the Birdy was first released, and I'm sure...
To clarify, this USA one is a "post extension" which allows adjustment in the height of the bar. I presumed you knew about this and tried one and were...
I'm not sure you could use this: http://www.gemplers.com/a/shop/product.asp?T1=G65511&UID=2005050311041337565 87453 I don't see bikes mentioned in the...
... Hello Mike, apart from your primary concern of more height, do you wish less reach or more reach? With the fixed height "allround" stem, the handlebar...
And here's some more info on it... http://www.adventure-motorcycling.co.uk/products/?product=100...
Beat Ludin
bludin@...
May 3, 2005 8:34 pm
5381
Carsten, When you investigated your centre-of-gravity movement from pedalling, did you measure the backwards-and-forwards movement? If yes, can you remember ...
... pedalling, did ... remember ... rougly 7 mm horizontal, 5 mm vertical CG movement in recumbent position (1715 mm Body height, 78 kg, 162.5 mm crank...
I just reviewed my newest calculations on this topic, done for an upright riding position, with very different results from those I gave in the previous post: ...
Carsten, Thanks. The quality of my data (reading graphs with pixel accuracy) doesn't justify asking you to calulate my CofG shift. I'm a bit taller than you...
Folks, Apologies if this is not the way to do things however just wanted to let everyone know that my Birdy Silver and Dahon Helios are for sale on eBay...
... It's true, you would be hard pressed to get a Birdy significantly below 8 kg, and with the new sturdier frame you'd end up at probably several hundred...
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