Park Tool Co. TM-1 Spoke Tension Meter Tools

4/5 (1 Reviews)
MSRP : $68.95

Product Description

The TM-1 is a must-have tool for keeping spokes properly and uniformly tensioned. It accurately and reliably measures the absolute tension of each of the spokes in a wheel, as well as the relative tension between all the spokes in a wheel. The TM-1 works on nearly any bicycle spoke??_no matter what the diameter, material, or shape. Not just for the experienced mechanic, the TM-1 is for anyone building or truing wheels, diagnosing wheel problems, or assembling new bikes.

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User Reviews

Overall Rating:4
Value Rating:1
Submitted by pepelkod a Road Racer

Date Reviewed: June 6, 2012

Strengths:    Industry Standard.
Relatively accurate.
Calibration is possible.

Weaknesses:    Translation between gauge scale and actual KGF chart.
Requires some finesse to get a repeatable result.
Price as compares to other products on the market.

Bottom Line:   
Full disclosure: I am the author of the iPhone Spoke Tensioner (

For years I used this as my only tool for checking tension, and it has done an admirable job and I have built a number of wheel sets as well as true up wheels with it.

There are several shortcoming though. First is that I find it tiresome to alternate between the spoke wrench and the meter constantly. Similarly threading the tool in between the spokes and getting on the narrow part of a double butted spoke is somewhat time consuming.

Second, when comparing with two other identical TM-1 tension meters I found discrepancies of up to 20kgf. Most measurements were within an acceptable range of +- 10kgf but 20kgf could be the difference between a good build and a cracked rim.

Lastly, the repeatability is difficult until you have used the tool for a while. Even with the same tool I would get some smaller (10kgf) variations in tension for the same spoke. This depended on how quickly I let the tool clamp on the spoke, how long it sat there and in some cases the angle that it was on the spoke.

Overall, a good tool but for a serious wheel builder but very expensive compared to the competition like the iPhone based spoke tension meters.

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Price Paid:    $70.00

Purchased At:   Universal Cycles

Similar Products Used:   iPhone Spoke Tensioner

Bike Setup:   Fuji Team Pro with Powertap Hub and DT Swiss RR-585 rim.
Turner Sultan with Hope Pro II and Stans Arch.

Reviews 1 - 1 (1 Reviews Total)

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