Throttle controlls Hydraulic or Cable?

I am looking for some insight on Hydraulic vs cable controlled throttles. I do not find the stock vw cable to be that reliable. Is a Hydraulic system very responsive compared to cable? The cable system in question would be used with a morse cable similar to a marine throttle cable. Any input would be appreciated.
Joe

Joe, sorry I can

It's a pan right now though by the next few weeks it will be converted to a frame. I am installing a complete CNC brake clutch system in the car. My Flare is used and I just pulled the body off the pan a second time and did not like the fit up. The pan is tapered where the body frame is not. I have drawn up a square tube frame to be retro fitted into the pan that will match the body frame. I will also eliminate the poor pan to body bolting design which will allow an easy body removal in the future. The front area will also get a bit of a design make over. Next few years the plan is to make an entirely new frame. For now I just wants to get it on the road for fun. Safe fun.

Joe....

Did you have any luck converting to a hydraulic cable for your throttle? Mine snapped yesterday in the midst of a really good beach run. Thank god I had a pair of vice grips in the car. I clamped the vise grips on the end of the cable where it snapped and used the cable between my toes to drive it back home.

I did a search and it seems as though everyone has their own success story on what to use to repair/heal/fix, but all of the posts that I read were dated back to 2004/3... has there been anything new to replace the cable so it doesn't happen again? These are the other posts that I found.

https://www.speedsterowners.com/forum/readmsg.asp?t=2848
https://www.speedsterowners.com/forum/readmsg.asp?t=5305
https://www.speedsterowners.com/forum/readmsg.asp?t=2327

I have used cables for years,had very few failures.I think most failures occur because the linkage is not set up properly and people have to use a big return spring to keep it from idling too high.I use a cable on my Speedster and my drag car. I don't care for the marine type cable unless you can keep it straight w/no bends,otherwise it binds up.I used Teflon tubing put a cable inside. Mike

I have installed a morse (marine style)throttle cable. It works very smooth. The problem with a lot of the VW replacement throttle cables is they wear out ,stretch or snap. When you have metal to metal contact you are going to get wear and failures. To eliminated the friction issue with the standard cable install some teflon tubing into the guide tube near the transaxle. It's the same design concept as the morse cable with the exception of the cable quality. I did go with a hydraullic clutch system.
Joe

I located a morse cable at west marine, how long of a cable should I get... and will fit through the cable housing? I assume that I will have to cut off one end to feed it through, but what should I use to connect it to the pedal?

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/10308/0/0/morse/All_2/mode+matchallpartial/0/0

I found these cables too... it does not say that it is a morse cable, but it looks similar and it does not have the ends attached. Is it just the housing that is the special protective objective?

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/10085/0/0/cable/All_2/mode%20matchallpartial/90/0
or
http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/16828/0/0/cable/All_2/mode%20matchallpartial/105/0

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/10127/0/0/cable/All_2/mode%20matchallpartial/105/0

Go to this site
http://www.chassisshop.com
They have cables at various lengths. You'll have to take some measurements for fitment. The best mock up is small diameter brake line or copper tubing from the hardware store. They are easy to bend. Remember no sharp bends.

Here's my take of hydraulic throttles. DON'T USE IT!!!!

I've tried unsuccessfully to use a hydraulic throttle, not on a Spyder or Speedster but on a dune buggy. I'm not the only one to try this method and in all cases, everyone that has tried, including myself has changed to either cable or morse.

The problem is that the fluid heats up and expands. When this happens, the throttle opens and your engine speeds up at idle. The only solution is to open the reservoir and allow some pressure to escape.

In my opinion, a Morse type cable is your best bet.

Another comment on hydraulic throttles:

I also had problems with the fluid heating and expanding. Putting a big spring on the linkage helped but started to wear the bushings. Using silicone brake fluid instead of the ATF helped a lot, but eventually I also went back to a cable.

Bob

Once I get my EFI up and running I plan to experiment with an electronic throttle.

I'll use a BMW pedal (with two independent electrical circuits for safety) for input, a servo for output, and a TPS to double check the servo is doing what is commanded (again for safety - I can kill the engine if the TPS returns an unexpected value due to servo failure/sticking)

Simon