i used a 91 ford escort's master witch is 5/8 bore and the slave cylinder witch 3/4 bore and i don't have enough movement frome the slave cylinder witch gets about 3/4 stroke so i was wondering if i can use the cnc slave cylinder witch gets 1 1/4 stroke witch is a 7/8 bore /// how much stroke will i get with a master that's 5/8 bore and a slave thats 7/8 bore with 1-1/4 stroke // and they sell a cheaper version of the cnc that gets 1 .25
Here's what I figured out while trying to do this on my 66 Mustang with a 98 V6 T5 (same spec as 94/5 V8 T5 by the way..) Most T5's require at least 1" of movement on the clutch fork. Calculating movement based on Hyd. Piston size 5/8” bore= .3066 sq” 11/16” bore= .3712 3/4” bore= .4416 13/16” bore= .5185 7/8” bore= .6013 To calculate how far a given cylinder will move another, divide the smaller cylinder area by the larger, then multiply by the distanced the small cylinder travels. i.e. .4416 (3.4”) / .6013 (7/8”) = 0.7344 then 2” (pedal stroke) x 0.7344 = 1.469” (fork movement)
Going to a larger bore on the slave cylinder gives you less stroke. The stroke listed on the slave cylinder is simply the amount of stroke it gets before the seals go past the edge and leaks. This has nothing to do with the amount of actual stroke you will get when installed. If you have a 5/8" master and a 3/4" slave and want more stroke then you need to goto a smaller slave or a bigger master. Ben
do you know of any 3/4 or 5/8 slave that will get 1'' or more stroke ? or what setup do you have / used
I used a CNC 7/8" slave on a home-made mount and a Wilwood 3/4" mc mounted below the brake mc. I works quite well so far but it's up on a frame cart right now while I make other mods....check how much movement you get at the pedal. If your pedal travel is limited my the stroke of the mc than you'll never get enough out of the slave. I believe I have 2.75+/- of travel and 1.25" at the slave.
Speedway: http://www.speedwaymotors.com/Push-Type-Slave-Cylinder,1944.html I still have an additional Wilwood mc lying around if your interested. It's a 3/4" piece that I mocked up in the car but decided on a different, smaller unit later.
i believe earl has the flowtech 12100s (the ceramic version is 32100) on his car with a t5 and a cable set up so i believe they would fit with the hydraulic also
how much movement will i get out of this setup cnc 711 3/4 master i cant find that stroke this is ? cnc 305-B 7/8 slave how much stroke will i get at the slave ? should i use a diffrent brand i probably will purchase in the next few days will i get more with this one Speedway:http://www.speedwaymotors.com/Push-T...nder,1944.html
The diameter of the cylinders can in no way tell you what stroke you will get. You can tell that with your master and slave diameters you will get 85 - 86% of the stroke on the master cylinder at the slave cylinder. If you have a 1 inch stroke on the master cylinder then your slave will have only .875" stroke. If you get 1.5 inch stroke on your master cylinder then your slave will get a 1.286 inch stroke.
