1979 Puch Magnum Project Part 16 - Trail Tech

Installing a Trail Tech on my Puch Magnum, It's a bit modern for a 35 year old bike but I liked that better than having the original speedometer plus several different gauges mounted to the bike. Treatland sell the Trail Tech - https://www.treatland.tv/trail-tech-v... and I got the protector from Amazon http://www.amazon.com/gp/product/B000... The diagram of the part for the mount will only work with the aluminum protector, hole spacing is different if you just use the display without it. The speed sensor needs changing, I have about 2mm of chain adjustment before the sensor would hit the rear suspension mount. I will have to remake something that attaches directly to the axle. Will be a better solution as it doesn't require drilling and tapping of the drum brake and the wheel can be removed with the sensor still attached. The bolt that I attach to the wheel is just a stock bolt that had a magnet epoxied to it (roughed up both surfaces), and then some heat shrink put around the outside. My camera decided to stop recording after 3 seconds of that bit so it isn't shown.