Optimizing Performance of the Rupes BIGFOOT LHR15ES and LHR21ES...

fossil said:
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Anybody have any input on this?



Thanks.
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I don't know the answer to your question but on a flat panel with the pad flat on the paint you are not stopping the rotation with any reasonable amount of pressure...even on speed 4.
 
Kevin Brown said:
I think the speed dial is used in various machines and it seems like at some point, it's delivering max speed before the maximum setting. I'll get a final answer on this because it's bugging several of us. Thanks.
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Verified through e-mail correspondence with Marco D'Inca, the engineer that designed the BigFoot:



Kevin:

"Could you please explain the speed setting dial?

It is not linear, and although there may be an increase in RPM above 4.5 to 5.0, it is seemingly imperceptible."



Marco:

"The speed setting is not linear. What is linear is the RMS voltage output.

This makes the wheel more sensitive on lower speed settings, and more accurate near the maximum speed settings."



And there you have it!
 
Kevin Brown said:
Verified through e-mail correspondence with Marco D'Inca, the engineer that designed the BigFoot:



Kevin:

"Could you please explain the speed setting dial?

It is not linear, and although there may be an increase in RPM above 4.5 to 5.0, it is seemingly imperceptible."



Marco:

"The speed setting is not linear. What is linear is the RMS voltage output.

This makes the wheel more sensitive on lower speed settings, and more accurate near the maximum speed settings."



And there you have it!
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I'm not following :confused:
 
PMFJI here but perhaps I could relate it differently. (Although RMS voltage I get from my years as an audio/ hi-fi nut.)



Take variable assist power steering. When you're going slow it has tons of assist so you don't have to crank on the steering wheel to get the front wheels to turn. Yet when you're traveling at expressway speeds the boost is cut way down, yet the 'feel' of the wheel is more precise.



IOW's.... if the wheel was as easy to turn at 70 miles an hour, and the front wheels moved as easily as they do at 5 miles an hour you'd end up driving into a bridge with very little steering input. As it is, very slight input gives very PRECISE output at greater speeds. ;)
 
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