July 16, 2013
Are you tired of the old style wet cell batteries that came standard in classic Harleys? Me too. Enough with checking fluid levels and topping off. Enough with the corrosion on the battery terminals and wires. Me too. I figured it was time to try a little bit of higher tech ans try out this sealed battery in my classic Harley. I first heard of this particular deal on the www.caimag.com forum.
I still have a little over two months to get this bike back on the road in time to lead the American Iron Magazine Honor Ride, sponsored by GEICO, to Milwaukee for Harley’s 110th anniversary. As I continue to make progress on my 1948 Harley Panhead I have updated the old wet cell battery with this high tech version. The design mounts a sealed 6-volt battery inside a plastic case made to look exactly, from the outside, like a genuine Harley battery. It comes internally pre-wired and even has an in-line fuse tucked away inside. Nice!
This is a well designed and manufactured item that I look forward to testing in the next year. Once it is installed, which takes literally a minute or two, it would be very difficult to recognize it as anything other than an original and correct classic Harley battery.
All I have to do now it drop on the battery box cover, line up the battery box posts and tighten down the two wing nuts. Even attaching a battery charger is easy thanks to the easy access terminal posts.
If this set up works as well as I am told it does I expect I will be replacing the batteries in each of my 6-volt classic Harley Big Twin motorcycles as the old wet cell ones die.
I purchased this complete set-up ready to drop in and go, for Erdos on the www.caimag.com forum.
August 29, 2012
Part 6 of a series on rebuilding an old Bosch motorcycle magneto. This is reposted here with the permission of the author, who has asked me to keep anonymous.
The story of what the professional restorer did to this magneto just keeps getting better…
Although the end cap came off without difficulty, often they are a very tight fit. Because of this, I designed a set of separators consisting of four pieces held in place with hose clamps that lets me gently press armatures apart by turning two screws. The next photograph uses one of my spare ZEV armatures to show how it works.
The next photograph shows the end containing the condenser of the actual armature I am rebuilding, with the four screws holding this end cap in More on Classic Motorcycle Tech – Magneto Rebuild, Part 6
August 24, 2012
This is installment #5 of a multi-part series by an anonymous friend (not me) who gave us permission to repost here.
7) In the next photograph the protrusion at 7:00 in the taper locates the points block with respect to the armature to ensure the magnetic flux reversal coincides with the opening of the points. The missing chunk at 11:00 in the taper appears to be damage caused by some heavy-handed restorer. The black cylinder at 4:00 is a carbon brush that completes the primary circuit back to earth when the points close. To do this, the carbon brush has to make good contact with the surface it rubs against.
Unfortunately, as can be seen in the next photograph, the surface the earth brush rides against is in pretty poor condition. Although the brush can make a good electrical connection to such a surface, its roughness will wear away the More on Classic Motorcycle Tech – Rebuild Magneto Part 5