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what does a KW master vibrator do?
Posted: Mon Oct 14, 2019 5:24 pm
by TBones12
I noticed a KW master vibrator for sale and I have seen them before but it has one coil, what does it do?
Thank you in advanced!
Re: what does a KW master vibrator do?
Posted: Mon Oct 14, 2019 5:40 pm
by Rich Eagle
Re: what does a KW master vibrator do?
Posted: Mon Oct 14, 2019 7:42 pm
by JohnH
Early coils did not have a cushion spring which made it very difficult to adjust the coils for consistent firing, particularly when operating on magneto.
By using a master vibrator, the contacts in each of the four coils is bypassed, and the single contact in the master vibrator takes over the function. All coils fire the same as each other. Once the cushion spring was introduced, the master vibrator became unnecessary.
Re: what does a KW master vibrator do?
Posted: Sat Oct 19, 2019 5:10 pm
by Ron Patterson
Se attached diagrams contrasting a Model T engine with and without a Master Vibrator.