[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]
On 16 Jun 2004 at 21:21, Keith Park wrote: > Hmmm... they had a ball bearing in side of a plastic holder (which stuck the > ball) and when working the ball pressed against the switch contacts. What > activates the contacts in the ones you took apart:? In both cases it was a diaphram which pushed on a plunger. The German ones had a metal plunger made in 3 parts, including a spring, so that it would contact and maintain force on the contact while letting the diaphram go all the way to the end of it's travel. The Brazilian one had a solid nylon plunger which melted on the end when the contacts got hot. I think both of mine failed when silicone managed to seep around the diaphram and contaminate the contacts until they would no longer conduct. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org