TQ magnet issue ....or not?

Marcelfacd

Member
May 30, 2019
76
42
Leersum
I recently bought a Lumen 910 and switched over some parts from my hardtail. One of the parts I switched over is the wheelset. The original set had CL discs so I could not put the original magnet on the wheel set I have. Nevertheless I had a magnet lying around from my old turbo levo which I used. You would think a magnet is a magnet....?
What happened is that now it reads my speed about 150% of what it really is! So now it shuts off at 17-18kmh !

I already ordered the original magnet but I wonder what could be the cause and if there is some kind of reset necessary? Anybody experienced something similar?
 

Andrew08

New Member
May 26, 2024
5
1
Medan, Indonesia
so when you change wheelset, I am not sure if it is the same size, like your newer emtb is 29x2.3(2326mm tire circumference) but your old tire is 26x1-1/8(1970mm tire circumference), in this exteme case your speed will lock up much faster.
 

Marcelfacd

Member
May 30, 2019
76
42
Leersum
Issue was solved by putting the TQ magnet on. Weird thing though that a different magnet gives a different result, its al about the pulse it gives as far as I know.
 

Emailsucks98

Active member
Nov 12, 2020
317
371
Bellingham Wa
I've been using cateye computer magnets, installed in CL discs on several different wheelsets, no problems...I keep a spare in my pack.

Weird that you were getting 150% reading- makes me wonder if the magnet was getting picked up twice per revolution
 

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