[TheForge] Re: But how fast does the Alldays & Onions go?

[Jerry Frost]

From: "Mike Spencer" <mspencer at tallships.ca>


>
> Frosty> My only question is why use two magnets?
>
> Two magnets doubles the the number of counted pulses 
> per revolution
> and so doubles the computed MPH.  So I get more 
> accuracy.
>
> Assume (to make easy numbers) 100 RPM = 10 MPH.  RPM 
> has to drop 10%
> to ca. 90 before I see a change to 9 MPH.  With two 
> magnets, 100 RPM =
> 20 MPH, and if RPM drops 5% to 95, I see a change to 
> 19 MPH.
> Actually, I'm using the kilometers/hr setting because 
> kilometers are
> smaller than miles so I get more accuracy that way, 
> too.
>

That sure makes sense if I'd thought about it. Double 
the sampling rate, double the accurace.


> Frosty> What color are you going to paint it?
>
> Dark green with fire engine red trim.  Almost done, 
> just a couple of
> bits that have to be degreased before painting and 
> one bit  that needs
> a ladder to reach.
>

I've been using Hunter green and gold as shop colors 
for years. So has Deb, for many years before we met in 
fact.

> Frosty> Okay, that was two questions.
>
> That's alright, they were small ones.
>
>
> - Mike
>

I tried to keep them small and easy, then I lost count.

Frosty
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.