WCM adjustable pedal carriage mounting rails

[Blindcars]

My new chassis didnt have the pedal carriage mounting rails on it sp i have been looking at ways to improve on the original design which use basicaly "drawer slides" to allow adjusent of the pedals. Lorren mentionef there has been failures of the slides and ive also been told of deflection of the slides when pushing on the pedals ( some have installed a clamp to "lock" the pedal carriage in place). I am leaning towards a round rail with a circular nylon bearing ( the "bearing" rides around the rail" and has close tolerances to elimenate slop ). It is designed for manufacturing purposes i.e. Linear actuators. http://www.igus.com/drylin

The local sales rep is great and is running by the engineers what i am trying to accomplish and to see what their recomendations on which slide might work the best for this application. Going to also be interesting to see what the cist is lol. I kinda lean towards i dont mind paying a little extra for reliabilty and safety.

 

On a secondary note, i am also going to be using stainless tubing and " Swagelock" fittings for my fuel and brake lines. Easy to fabricate and service ( they make tubing to AN fittings for the transition to flex lines. Rated to 10k psi so pressure isnt an issue. Assembling the fittings is a snap and installed corectly never leak. Same fitting can be dissambled and be reassembled in a snap and not leak. Yea, i know, not DOT approved .... You just dont want to mix fitting components from various mfg. Thats where reliability issues arise. The fittings are a little pricey but i happen to have some around from my IE days in the perrochemicsl industry. I might have to swallow a little hard when i have to buy the ones that adapt from the tubing to AN but..,

 

Thoughts?

[powderbrake]

I am one of those who clamped my adjustable pedals in a fixed position. Yes there was a "spongy" feel to the brakes when there was loading on the slides, so that was why I clamped them.

 

I am sure that your high tech solution will work, but I suggest it may be overkill. Once you find the spot that works for you, lock it in place. Others may drive my car, but it's only a short test drive/ thrill ride, and they can put up with the inconvenience of a non-optimal pedal position.

 

Fitting up the fuel and brake lines with custom sweglock tubing/fittings will make a very nice package. Don't be afraid of the fittings from variuous manufacturers, thay will work OK. I bought all my fittins for my brakes from a local Hot Rod shop which had a large variety, and a good stock of parts and tubes, and I have never had any leaks.

 

The fuel line was a nightmare of changes in size of tubing, SAE and Metric fittings, but once completed, no leaks.

[jimrankin]

There are some double rail sliding compound miter saws on the market that use the system you are looking at. Might be cheaper to see if the "repair" parts can be purchased and then modify as required. I think I posted some previous pictures of my modified slides and adjuster and now don't seem to have any unwanted movement and still adjustable without unlocking anything.

[Blindcars]

@jmrankin.. Where might the pictures be posted? Im also looking at ebay for the linear acuator rails so cost might be substantially lower.