Larry - What I think you want is a cruise control. Search eBay and you will
find thousands of OEM cruise control parts off cars. I'd rather be inclined
to buy a complete kit like:
http://www.summitracing.com/parts/rpc-250-1731?seid=srese1&gclid=CIPdndT_nrsCFY9gfgodYlUAmQ
Rostra is the big name in cruise controls. The link is for one that is
designed for race engines and no vacuum interface.
Make sure it can't hear any signal that has to do with your control of the
loading of the dyno or you might get surging or worse.
If I were doing something like that I'd spend an evening or two on the
internet learning how regular cruise controls work.
If you are looking at a digital device that will talk to your computer I
suspect you will have lot of learning to go through.
Cruise control technology has been around for a long time. There is one in
my 78 GMC pickup. I don't use it because it is way too loose (like +/- 2
mph) for my taste. When I got my 2000 Toyota Tacoma I had a local shop
install an aftermarket no name unit that has worked fine to my liking until
last month when the Bonneville salt finally got to the single bolt holding
the box to the fender well. I think that piece is analog; but not sure.
The factory cruise control in my wife's 99 Lexus is a lot tighter than the
one in my Taco. It's probably integrated into the car's computer and
functions off a fairly sophisticated servo software.
Ed
----- Original Message -----
From: "Neil Albaugh" <neil@dbelltech.com>
To: <drmayf@mayfco.com>; "LSR" <land-speed@autox.team.net>;
<tigers@autox.team.net>
Sent: Saturday, December 07, 2013 10:19 AM
Subject: Re: [Land-speed] While I am between parts and weather...
>I can't provide any specifics, Mayf, but whatever you do use, I'd provide
>for a manual override in case things go awry.
> Regards, Neil Tucson, AZ -----Original Message-----
> From: Larry Mayfield
> Sent: Saturday, December 07, 2013 9:23 AM
> To: LSR ; tigers@autox.team.net
> Subject: [Land-speed] While I am between parts and weather... I have been
> dangerously thinking again. run for the hills, now, before
> it is too late!
>
> Well, ok, I am building a dyno set up for my own personal fun and use on
> motors I put together. I have been looking at electronic throttle
> controllers but admittedly, I am pretty ignorant on the technology. I
> now use a long Morse cable to twiddle the throttle but I'd like
> something that might be more amenable to using software for control.
(snip)
.> Listening for thoughts and ideas for my dyno application... like I said
> would be nice it it was a simple pot type control voltage to a module
> that converts to a drive output for the servo. I have software that can
> generate an automatic input for a dyno ramp up and down pretty easily...
>
> hanging around in the cold, in the wind, without the next parts for the
> Tiger refurb, waiting on football...
>
> larry
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