Update on the speed hack...
Yesterday was my 63rd birthday. Yeah, getting old completely sucks. But I took the day off, and rode my mountain bike through a beautiful state park on our coast. Way fun. Since I was down in the area I thought I would stop at the local ebike shop and get a spoke magnet for the speed sensor, for my new wheel set. I should have another cassette and lockring tool arriving any day now. So a quick axle swap I can install road wheels and tires.
BTW, I also tested the Catyeye speedo magnet on the Giant/Yamaha sensor and it works fine. So for anyone that wants to carry one for a spare it would likely work in a pinch. I thought I read elsewhere that the magnet was not strong enough and would throw your controller into error and shut down. Seemed to work fine.
Anyway, the magnet for the hub that works with the 2020 version of the speed sensor, is bolted onto the disc mounting. Since I was taking it off anyway, I got to thinking it would mount easily to the crank arm with some industrial foam mounting tape, so I thought I would try the sensor-relo speed hack. And I already had the security torx tool to remove the mounting screw for the speed sensor. Even better, there's a tab under the chainstay making it super easy to zip-tie the sensor in a perfect position for a magnet on the end of the crank. Within just a few minutes it was ready for testing.
For a summation, I would say don't bother. Yes, it keeps pulling as fast as you can pedal. I got up to about 24mph, pedaling as fast as I could. Wow, it buzzes! I just can't see any kind of consistent riding any any speed over about 20 or 21mph. So I suppose if you REALLY needed another mile an hour or two, it might be worth it. Otherwise, I was nonplussed. I'm going to put it back to stock and forget it.
Now if you could get a larger chain ring then it might make a lot more sense.
So here's what the hack looks like, and what to expect if you make the mod:
The hub magnet holder for the new version speed sensor makes for a really easy to attach magnet for the crank arm:
And while I'm at it, a couple of pics of the new trails I got to explore for my birthday.
One of the single-track trails was SUPER steep and rocky. Not wanting to endo on my head, I walked it down the steepest parts. Sure was fun riding the trails though.
The clouds in the distance is the 'marine layer' of fog over the Pacific Ocean, near Newport Beach on the southern California coast.