Calibration
01-14-10, 04:06 PM
#27
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No, it's not.
Here's what i'm talking about. For a DT champion straight gauage 2.0 spoke (vast majority of bikes <$1k wheels), the difference between 24 and 25 is 107 to 121kgf. There is no in between. The TM-1 is not marked as such. That's the difference between a front wheel spoke tension and rear drive assuming 3x 32hole "standard" 700c wheel. The same range on a DT swiss can be subdivided into 10-12 more distinct kgf inside that range.
Here's what i'm talking about. For a DT champion straight gauage 2.0 spoke (vast majority of bikes <$1k wheels), the difference between 24 and 25 is 107 to 121kgf. There is no in between. The TM-1 is not marked as such. That's the difference between a front wheel spoke tension and rear drive assuming 3x 32hole "standard" 700c wheel. The same range on a DT swiss can be subdivided into 10-12 more distinct kgf inside that range.
And as for repeatability screw that. I've taken multiple readings of the same spot on the same spoke which varies within that same range +/- 1 "unit" or worse depending on exactly how you release it. How are you supposed to build wheels with low spoke count/bladed spokes where the proper tension reads 0.3 on a DT swiss? You can't. Not with the park TM-1 anyways.
The Park does have faults but as far as I'm concerned it works well on a range of spokes and wheel sizes, is easy to use, accurate and precise. The fact that it's not super expensive is a bonus and puts the tool in reach for a lot of home mechanics.
I've used quite a few other tension meters and if I felt there was an advantage to using another model I'd buy one in an instant regardless of price.
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