Hi John,
For reference I'm using these pictured from ebay:
1992 automatic transmission brake pedal assembly:
https://i.ebayimg.com/images/g/U8oAAOSwqaJaYWUY/s-l1600.jpg
1992 manual transmission combined brake clutch pedal assembly:
https://i.ebayimg.com/images/g/o14AAOSw8-FaVSQR/s-l1600.jpg
Yes. It does appear that the pedal assemblies for automatic and manual
transmissions are quite different and it would be very difficult to add
a clutch pedal to the brake assembly for the automatic. What I am
suggesting is replacing the (single pedal) brake pedal assembly with the
(two pedal) combined clutch brake pedal assembly from a manual
transmission F-150. It appears that the single pedal assembly is bolted
to the firewall/vacuum booster/master cylinder with 4 bolts through the
firewall plus 2 bolts to a cross member above the assembly (probably the
dash support). Removing these 6 bolts and the linkage to the brake
master cylinder would allow the removal of this assembly. It appears
that 5 of the 6 bolt holes can be reused to attach the combined two
pedal assembly. If the cross member does not a have hole properly
aligned for the attachment of the dual pedal assembly a new hole would
need to be drilled. Reconnect brake master cylinder the linkage and you
would now have the brake setup as original but with a clutch pedal
flopping on the outboard side of the brake pedal.
Two additional holes may need to be drilled for attaching the clutch
master cylinder to the firewall and a hole cut for the linkage to the
clutch master cylinder. Then attach the clutch master cylinder to the
firewall and the clutch pedal. Install the slave cylinder on the
transmission/bell housing. Install the hydraulic tubing between master
cylinder and the slave cylinder.
That being said, this does not answer your original question but is
rather a follow on to another another suggestion.
To address though not actually answer your original question:
I have been looking for linear actuators to replace the shift and
selector cables. he cables take up too much space in the engine
compartment of my Fiero - space where would rather put batteries. So I
have been looking to this a little. In general what I've found is that
it is difficult to fine speed force and travel that would meet my
requirements. I can have to of the three, almost any two but not all
three. But this site might be worth a look for your problem.
https://www.progressiveautomations.com/linear-actuators/stroke/1-inch/force/150-lbs
<https://www.progressiveautomations.com/linear-actuators/stroke/1-inch/force/150-lbs>
Click on the shopping cart to configure what you want. I chose 1" - 150
lbs and the only speed option was 0.59 inches per second. which means
it would take 1.7 seconds to move the full 1". This may be a little
slower that what your looking for. There may be other configuration
options that would work for you.
Hope this helps
Cliff
On 02/25/2018 07:03 PM, John Lussmyer via EV wrote:
On Sun Feb 25 13:15:12 PST 2018 [email protected] said:
https://www.ebay.com/itm/87-91-Ford-Hydraulic-Clutch-Brake-Pedal-Assembly-F150-F250-F350-Bronco-Manual/323080675802?hash=item4b391be1da:g:ri8AAOSwuA1ah8XC&vxp=mtr
Perhaps F-150s had a hydraulic clutch for some years. More research is
required but you may be able to pick up a used one at a salvage yard.
Yes, ford trucks have had hydraulic clutches for years.
As I have said, the problem is MOUTING the clutch pedal.
This truck was originally an automatic, the pedal mounting system is completely
different from the manual transmission version of the truck.
--
Tigers prowl and Dragons soar in my dreams...
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