Tug Boat wrote:
Just picked up and installed a used SRM DA 7800, with a PCV. Wired. I get speed, but nothing from the actual SRM. I thought it was the batteries, but when I checked them with a voltmeter, I get 3.5 out of each (I have the rectangular ones). This makes me think I've got the pickup installed wrong.
I have the harness that goes on the cable guide under the BB. Mine is sandwiched between the cable guide and the frame, and the sensor is about as close to the white plastic cover as I can get it. But I'm wondering if the sensor is in the correct place. Should it go on top of the cable guide, as far from the frame as I can get it?
Here's my set up:
I'm wondering if it should be:
If not, any thoughts on what's going on. Good battery voltage but not picking up any SRM data. Thanks for the help.
I was never able to get a signal when mounting the sensor under the cable guide. I had to mount it on top of the guide and it worked well, but it's a pita. I modified a shimano cable guide so I could bolt the sensor to the guide separate from where the guide mounts to the bottom bracket. I dremeled out the bottom of the guide so it could accept a brake pad holder T nut and fastened the sensor to it with a short m4 or 5 bolt. For some reason I could never get the sensor to stay put when I mounted it using the bolt that holds the cable guide to the BB
It would work for a while but then all of a sudden at the worst time I'd loose the signal, because the sensor rotated.