SoTxButler - your pedals...

750hp · #1 (**permalink**) 10-04-2010, 10:32 AM

Russ,
I was just looking at your photos and I'm interested in your pedal placement. It seems your floor mounted pedals must be as far forward as possible without them fouling on the frame rail. Have you moved the pedals forward, or is this the standard position for them?

Thanks,

SoTxButler · #2 (**permalink**) 10-04-2010, 12:28 PM

Craig,

The pedals are as far forward as they can be. Every Butler I have seen has them in this position.

Thanks for the nice photo comment.

lal Naja · #3 (**permalink**) 10-04-2010, 10:49 PM

The other nice feature is that the pedal box is adjustable from front to back. If you examine the photo you will see extra holes for this purpose.

I've got mine in the full front position like Russ. I've drilled extra holes on mine to make small incremental adjustments should I need to.

Arthur

750hp · #4 (**permalink**) 10-05-2010, 03:24 AM

Thanks for clarifying Russ.

Arthur - do you mean the two bolts near where the hydraulic lines are exiting the master cylinders? Wow - that's WAY back!

For those with long legs, I wonder if some owners might drill extra holes to move the pedals even further forward, and fit shorter throw master cylinders (or change the pivot ratios).

lal Naja · #5 (**permalink**) 10-05-2010, 05:43 PM

Quote:

Originally Posted by 750hp

Thanks for clarifying Russ.

Arthur - do you mean the two bolts near where the hydraulic lines are exiting the master cylinders? Wow - that's WAY back!
THESE BOLTS ARE HOLDING THE BODY TO THE FRAME. NOTHING TO DO WITH THE PEDAL BOX.

For those with long legs, I wonder if some owners might drill extra holes to move the pedals even further forward, and fit shorter throw master cylinders (or change the pivot ratios).

No. The four bolts/nuts that can be seen hanging below the pedal box. Remove them, slide the box backward with pedals and masters to a rearward hole position and re-bolt. You've just changed the pedals for a shorter person. I'm 5' 10" without shoes and I've set mine at the most forward position. I've drilled extra holes so I can make 1" incremental adjustments rearwards. Stock adjustment is 2" increments.

As shown in Russ's car the pedal box is in the most forward position and that is max. You cannot change that to get more leg room. It can only be moved
rearward as I have explained in the previous paragraph.

Take a look at my cobra build photos by clicking on Lal Naja along side my avitar above. In my Profile/Albums you will see the pedal box. perhaps you will help.

Arthur

750hp · #6 (**permalink**) 10-06-2010, 05:56 AM

Thanks for the information Arthur. I can see the adjustment bolts that you mentioned.

If you're 5'10" and Russ is 5'9" and you're both using the forward pedal position, 6'4" could require some thinking outside the box...!

lal Naja · #7 (**permalink**) 10-06-2010, 03:59 PM

Quote:

Originally Posted by 750hp

Thanks for the information Arthur. I can see the adjustment bolts that you mentioned.

If you're 5'10" and Russ is 5'9" and you're both using the forward pedal position, 6'4" could require some thinking outside the box...!

Also remember that there is more adjustability available by lenghtening or shortening the pushrods between the pedals & master cylinders. Lengthening will push the pedals forward and shortening will push them back. You have until the pedals bind against the firewall/bulkhead. Worst case is that you may have to notch the firewall for the pedals. And remember to put a positive stop for the clutch pedal. Notching will not be possible if you have Ron Butlers heaters.

Another area of adjustment would be to extend the distance between the heim joint and the brake pedal on the bias mechanism. This will reduce the stroke length and of course increase the reqired pedal force for breaking. There are limits to all of this, but it's a pretty good system. I would have liked remote brake bias on the system and I tried to create it for my car but it would involve a lot of changes. I will drive it first and then decide.

Gas pedal is easily adjustabel too. I reshaped mine for easy heel-toe braking/down shifting.

I also have a little space behind my seat if ever my legs grow

Arthur

Butlers24rth · #8 (**permalink**) 10-09-2010, 02:47 PM

Quote:

Originally Posted by 750hp

Thanks for the information Arthur. I can see the adjustment bolts that you mentioned.

If you're 5'10" and Russ is 5'9" and you're both using the forward pedal position, 6'4" could require some thinking outside the box...!

Craig,
One problem that I have had at 6'-2" is that the gas pedal is the limiting factor as it hits the fire wall. I was going to swith to a cable system as the linkage type does not get the travel I need. I have also put the seat on the fllor with its back against the read of the seating area. This gave me a lot more room.
Scott

lal Naja · #9 (**permalink**) 10-09-2010, 10:13 PM

Quote:

Originally Posted by Butlers24rth

Craig,
One problem that I have had at 6'-2" is that the gas pedal is the limiting factor as it hits the fire wall. I was going to swith to a cable system as the linkage type does not get the travel I need. I have also put the seat on the fllor with its back against the read of the seating area. This gave me a lot more room.
Scott

Scott, I do not know how much modification it will take to install a cable system and will it offer you ratio modification to achieve the travel.

If you still have the Butler system, I do and I believe it to be a simple & well engineered piece. Easy alterations can be made to the crank ratios to increase or decrease pedal travel.

I've modified my ratios to reduce the amount of pedal travel. You can also install cranks that have sliding pivots to change the ratio indefinately.

Arthur

750hp · #10 (**permalink**) 10-09-2010, 11:03 PM

Quote:

Originally Posted by Butlers24rth

Craig,
One problem that I have had at 6'-2" is that the gas pedal is the limiting factor as it hits the fire wall. I was going to swith to a cable system as the linkage type does not get the travel I need. I have also put the seat on the fllor with its back against the read of the seating area. This gave me a lot more room.
Scott

Hi Scott - thanks for adding your thoughts. Have you moved any pedals forward, or are they all hard up against the firewall at full travel? Well, hopefully your brake pedal doesn't have that much travel, but you know what I mean...!

Did you modify the dash for more knee room?

Not that I want to get too personal, but are you on the high or low side of 220lb? Size 12 shoe?

Can you drive the car with shoes on, or do they span across two pedals?

Did you modify the seat or the rear panel at all, or just mount the factory seat on the floor?

How close are your headers to your footbox (ie: could you notch the footbox slightly for extra pedal travel as Arthur suggested?)

OK - I'll leave you alone now

You might notice that I'm interested in understanding what you've done, and what challenges you faced in getting the car to the point that you could drive it.

Thanks for your time,

Craig