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Warning: Dimension Stem-Converter

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Warning: Dimension Stem-Converter

Old 04-03-09, 07:09 PM
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Panthers007
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Warning: Dimension Stem-Converter

I had occasion to try one of these, and found that their length - which they don't publish in their ads - makes it impossible to install properly in most 1-inch threaded head-tubes. This beast is 135mm (5.25-inch), not counting the length of the anchoring wedge. Most bicycles have a head-tube shorter than this - making it so the only way to use this is with several inches of the shaft jutting out of your headset. You'd look like a giraffe!

Problem #2: It is too fat to fit down the head-tube without violent twisting and pushing and, possibly, pounding into the tube. Bad idea!

Suggestion: If you are looking for a good stem-converter, get anything other than a Dimension. I use a Profile Design and it works flawlessly.

(This is not a thread to preach the merits or problems of using a stem-converter. Thank you.)
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Old 04-04-09, 05:42 AM
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Originally Posted by Panthers007 View Post
I had occasion to try one of these, and found that their length - which they don't publish in their ads - makes it impossible to install properly in most 1-inch threaded head-tubes. This beast is 135mm (5.25-inch), not counting the length of the anchoring wedge. Most bicycles have a head-tube shorter than this - making it so the only way to use this is with several inches of the shaft jutting out of your headset. You'd look like a giraffe!

Problem #2: It is too fat to fit down the head-tube without violent twisting and pushing and, possibly, pounding into the tube. Bad idea!

Suggestion: If you are looking for a good stem-converter, get anything other than a Dimension. I use a Profile Design and it works flawlessly.

(This is not a thread to preach the merits or problems of using a stem-converter. Thank you.)
Out of curiosity, how many bikes did you try this on? I'm under the impression that threaded head tube lengths are dictated by frame size, the bigger the frame, the longer the tube and hence the distance to bottoming out.
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Old 04-04-09, 05:58 AM
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the important part is the minimum insertion line.
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Old 04-04-09, 11:54 AM
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The bike has a standard 1-inch threaded headset. All the gear marked 22.2mm - stems, other stem-converters - have fit just fine. This Dimension measures 22.27mm in diameter. This equals: You'd need a rubber-mallet to pound it down the head-tube.

If you choose not to believe this, please feel free to buy one. Or - I'll sell you mine for $10/+shp.
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Old 04-04-09, 12:08 PM
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Originally Posted by Panthers007 View Post
The bike has a standard 1-inch threaded headset. All the gear marked 22.2mm - stems, other stem-converters - have fit just fine. This Dimension measures 22.27mm in diameter. This equals: You'd need a rubber-mallet to pound it down the head-tube.

If you choose not to believe this, please feel free to buy one. Or - I'll sell you mine for $10/+shp.

Easy there spike, I asked a question. How many frames did you try this out on? 0.07 mm is equal to 0.003", well within the margin of tolerance for a typical bike part.

Then again, maybe your just a piss poor mechanic.
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Old 04-04-09, 12:12 PM
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$10 is what it'll cost you to prove it!
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Old 04-04-09, 12:46 PM
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If it was defective or didn't work...why not take it back for a refund?
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Old 04-04-09, 02:45 PM
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you know the steering tube tapers out at the bottom and isn't a straight tube from top to bottom, right?
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Old 04-04-09, 06:43 PM
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Originally Posted by AEO View Post
you know the steering tube tapers out at the bottom and isn't a straight tube from top to bottom, right?
By the time it gets to a more open part of the tube, you'd have to have pounded it down there with a 2-pound rubber mallet. After about an inch it will be thoroughly stuck. I tried. Result: A scratched-up stem-converter (not what I was calling it by this point), and I did have to use a plastic-headed ball pean-hammer to get the thing back out. It was REALLY jammed in there. As well as being WAY to long. You'd have about 3 inches protruding from the head-tube.

The utterly scratched nature of the beast as it emerged made returning it rather problematic. But after I have smeared it's rancid name everywhere, I just might. I've never encountered this with Profile Design, or Zoom, or Nitto.
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