suspension displacement sensors

[jaca]

Does anyone know of any affordable (sub $200) linear pots (or preferably lvdt) for motorsport application? I've spent a long time looking and they all seem to be ~300, which for 4 corners is out of our price range right now. I've considered using geared rotaries on the rockers/custom linkages/modified linears, but I thought I'd ask before going that route.

Has anyone built custom sensors for this application? I'd assume a good quality rotary properly set up would have acceptable transient response.. this was suggested in another thread but I don't think anyone had actually tried it.

[jaca]

Does anyone know of any affordable (sub $200) linear pots (or preferably lvdt) for motorsport application? I've spent a long time looking and they all seem to be ~300, which for 4 corners is out of our price range right now. I've considered using geared rotaries on the rockers/custom linkages/modified linears, but I thought I'd ask before going that route.

Has anyone built custom sensors for this application? I'd assume a good quality rotary properly set up would have acceptable transient response.. this was suggested in another thread but I don't think anyone had actually tried it.

[B Hise]

Use Penny and Giles resistive linear pots. They will do what you need them to and the price is right.

Eric always helped my school out:

Eric McDowell
S. Sterling Co.
Manufacturer's Representative & Distributor
457A Hwy 74 South
Peachtree City, GA 30269
770.632.8755 Phone

As far as rotaries with a geared linkage, its going to be a bigger problem than its worth. You can always calibrate linear pots in your data system if you don't get them mounted 1:1 with your dampers.

[Mikey Antonakakis]

I was going to say that we had the same problem last year, but then I realized it's Jake lol. Hey Jake!

[jrickert]

I'll second the Penny and Giles.

[Mike Macie]

http://www.jameshakewill.com/sus-pos-v1.pdf

Here's a paper from a guy who used rotary pots from radio shack on his formula ford car. Seemed to work well.