Anderson Timer question

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Bill Robinson
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Anderson Timer question

Post by Bill Robinson » Sat Feb 22, 2020 8:26 am

Which part of the flat contact gets touched by the flapper first? The butt end or the ramp?
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Anderson Timer
Anderson Timer
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Re: Anderson Timer question

Post by Ron Patterson » Sat Feb 22, 2020 8:35 am

Ramp
The camshaft turns counterclockwise.


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Re: Anderson Timer question

Post by Adam » Sat Feb 22, 2020 9:17 am

The flapper contacts the end of the segment first and then rides down the ramp.

(The cam turns counter-clockwise if you are standing in front of the car. The cam turns clockwise if you are sitting in the car.)
Last edited by Adam on Sat Feb 22, 2020 9:23 am, edited 1 time in total.

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Bill Robinson
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Re: Anderson Timer question

Post by Bill Robinson » Sat Feb 22, 2020 9:18 am

I agree. But that doesn't answer my question.
I am assuming that you are looking at the camshaft and flapper from the front of the engine to get the counter clockwise turn?

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Bill Robinson
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Re: Anderson Timer question

Post by Bill Robinson » Sat Feb 22, 2020 9:26 am

Like this? Keep in mind that this view is reversed from what we normally see.
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timer and flapper
timer and flapper


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Re: Anderson Timer question

Post by Adam » Sat Feb 22, 2020 9:28 am

Yes, that is correct.

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Re: Anderson Timer question

Post by Bill Robinson » Sat Feb 22, 2020 9:36 am

All of my Model T life I have assumed that the flapper touches the ramp first, then "flaps" off the butt end to get ready for the next strike. That just seems more logical to me. Now, a project that I'm working on has me looking closely at the mechanics of the timer, and I thought "no way". After talking to several others their answer was - ramp first. So that is what brought up my question.

Thanks- Adam & Ron for your help.

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Re: Anderson Timer question

Post by aDave » Sat Feb 22, 2020 9:53 am

Boy, thoser 1st two answers make this old mind really, terribly confused.....two different answers from extremely knowledgeable people...

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Re: Anderson Timer question

Post by DanTreace » Sat Feb 22, 2020 9:59 am

Bill

Correct.

This is the 'normal' view of the Anderson flapper.

The flapper is a sliding, gliding contact rotor, unlike the roller type that have to spin at speed.
IMG_7108 (640x480).jpg

The flapper is a wipe contact, spring loaded.
IMG_7115 (500x375).jpg
IMG_7115 (500x375).jpg (89.06 KiB) Viewed 4224 times







248289 (2).jpg
248289 (2).jpg (87.56 KiB) Viewed 4224 times
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Re: Anderson Timer question

Post by Norman Kling » Sat Feb 22, 2020 11:10 am

It makes good sense. The abrupt end of the ramp is timed so that the flapper hits each segment at the proper time for the spark.
Norm


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Re: Anderson Timer question

Post by Ron Patterson » Sat Feb 22, 2020 12:14 pm

Adam
Your right and I am wrong.
Thanks
Ron Patterson

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Re: Anderson Timer question

Post by Bill Robinson » Sat Feb 22, 2020 1:29 pm

Ron- the camshaft does turn counter clockwise, as you stated, if viewed from the front.


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Re: Anderson Timer question

Post by cessna53195 » Sat Feb 22, 2020 2:14 pm

You can fill the cup with axle grease, that will keep it lubed, and you won't need to check it for years...That is what I learned from those who service the T's at the Henry Ford. They service them once a year after about 5,000 miles, I am not sure what they do at that point , they could just put new ones in but I don't know for sure...I serviced mine 5 years ago and only drive about 200 miles a year, the grease does not drip out with heat...

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