Adjustable Stem
05-23-07, 07:46 AM
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Adjustable Stem
I recently bought a BBB adjustable stem at about 35 euros. Dont know how good this make is, but the stem seemed to be the job.
Heres some info:
BHS-22 HighSix
Bar bore: 25.4mm.
Weight: 274 grams.
Extensions: 90, 110, 130mm.
BHS-23 HighSix OS
Bar bore: 31.8mm.
Weight: 282 grams.
Extensions: 90, 110, 125mm.
Special Features
Adjustable: 0 to 60 degrees. High angle for riding comfort and steering control. Low angle for speed and less wind resistance.
Superlight 6061 T6 alloy forged.
Comes in high-polished silver and sand-blasted black.
Steering tube: 28.6mm.
Angle: Adjustable 0 to 60 degrees.
For hybrid bikes.
https://www.bbbparts.com/
Seems after trying two of the stems, no matter how much you tighten the adjustable part, the stem has movement in it. Design fault or bad batch who knows. Left me with a sore wrist, and back with my original stem....
Heres some info:
BHS-22 HighSix
Bar bore: 25.4mm.
Weight: 274 grams.
Extensions: 90, 110, 130mm.
BHS-23 HighSix OS
Bar bore: 31.8mm.
Weight: 282 grams.
Extensions: 90, 110, 125mm.
Special Features
Adjustable: 0 to 60 degrees. High angle for riding comfort and steering control. Low angle for speed and less wind resistance.
Superlight 6061 T6 alloy forged.
Comes in high-polished silver and sand-blasted black.
Steering tube: 28.6mm.
Angle: Adjustable 0 to 60 degrees.
For hybrid bikes.
https://www.bbbparts.com/
Seems after trying two of the stems, no matter how much you tighten the adjustable part, the stem has movement in it. Design fault or bad batch who knows. Left me with a sore wrist, and back with my original stem....
05-23-07, 07:57 AM
#2
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IMO, adjustable stems are useful for figuring out what stem height/angle works best for you, so you can then get the proper fixed stem.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey
05-23-07, 02:45 PM
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...Design fault or bad batch who knows....
Chipcom has a good explaination of why they even sell these things. They should market them as such.
05-23-07, 05:21 PM
#4
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Some of them do work well and hold adjustment. My neighbor has rode with one on his Giant road bike for years, and he's ~220 pounds.
But, I agree, mostly for a learning tool - always better off rigid stem.
But, I agree, mostly for a learning tool - always better off rigid stem.
05-23-07, 09:26 PM
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I got about 5 Kalloy adjustable stems that work fine. Not as stiff as a fixed stem, but holds their adjustment. Great for someone with back issues. One is on my regular commuter. Never had a problem with it. I ride this bike 6 out of 7 days a week.
05-24-07, 09:47 AM
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I have and adjustable quill stem (Radical) that has kept its adjustment for a year. My son's adjustable quill stem on his Giant kept losing its adjustment until I put loctite on the bolt - it has now stayed put for years.
05-24-07, 10:05 AM
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The look ergostem adjustable stems are rock solid but weigh a total ton
