Reminds me of when I had to drive my uncle's late 60's Chrysler hardtop convertible with power brakes - had to put one foot under the brake pedal to keep from tossing myself through the windshield. Back then, power brake pedals were very soft and cushy, and I was used to non-power. Thankfully, it had an auto transmission, so I didn't need the third foot.

The Mini gas pedal has a lever ratio to match the throttle lever of a SU carb (yes, there are variants of this lever), so that the pedal's full travel corresponds to the full travel of the carb lever.  The proper thing to do would be to fit the right length lveer to the Mikuni carb setup. This way you'd get full pedal travel and better speed modulation at your foot. It would be easier I think to make a suitable carb lever (or extend the one you have) than having to mess around under the dash trying to get it right. You'd just need to measure a SU carb lever to get the right length. Who knows, maybe somebody already makes the right sized lever.

Perhaps it's that the original posters carbs/throttle have a very short range of travel.
By the sounds of it, his pedal is far from "floored" and he's already at full throttle.

Could you not ( with an extra foot ), have the throttle cable at the carb loose, have the extra foot hold the pedal to the floor ( making sure your cable is long enough ), then tighten cable at carb throttle linkage....

The mentioned bracket.

I couldn't find a suitable piece of tubing so I just used a hunk of sheet rubber folded over and riveted.

The cap at the top of the pedal rod is just something I had laying around.

And, yes, I should've done a better job prepping/painting the bracket. [rolleyes]

Your accelerator pedal should have a limited range so that you can push it all the way to the floor without putting any undo stress on the carb or the cable. It is likely that you are missing the accelerator pedal stop that keeps the pedal from coming up (toward the driver) too far. From my parts list this is part number 21A840 but I haven't been able to find an online picture. It's basically a small 'L' shaped piece of metal with a rubber cover on one end.  The stop also keeps the cable attachment point on the pedal from hitting the firewall.

Kelley

Mike yes you can adjust the pedal height somewhat by loosening the cable just make sure you can still get full throttle. You can also tweak the pedal assembly (off the car preferably) to do the same thing.

I have all of part 31 which has the throttle pedal on this web site.  I don't see any additional pieces of metal.  But I will try adjusting the cable to see if the gas pedal closer to the floor is ok for driving.  

Jerry 

My "gas pedal" feels (to my ankle) to be way too close to me, making it ache after even a short drive.

Are you guys saying I can adjust my throttle cable at the carb, and install some kind of nut/bolt/bracket stop affair so my pedal will be farther away from me (closer to the floor) ??

If so, do tell !!!  Long drives are a real ankle killer. (and I am not a tall guy)

Take a close look at the pedal where the throttle cable is attached. The pedal arm should rest on an L-shaped stop attached to one of the bolts holding the pedal box in place.  The stop keeps the pedal end from resting against the firewall. Is that piece in place?

True,  but I have always set up pedals to all be even to the floor.  What do you guys do with the gas pedal

No the pedal should sit lower.

If I adjust the cable longer, I will have dead pedel and lack of throttle for awhile , won't I??

Jerry

Return stop - yes , on my moke.

Effectively lowers the height of the pedal - by having a spacer above the pivot point.

 Carpet in the way also lessens pedal travel,

and you can adjust your cable longer to let the pedal lowerself and crash out on the floor sooner.

I have seen an return stop, attached to the pedal box to limit the travel. 

Do any of the models have a pedal stop?  I have 3 inches of pedal till wide open throttle is reached.  1275 engine with Mikuni carbs.  And since my foot is not on the floor yet and it is a size 13, I will break something without a stop.  If there is one being used, I would like to see what it looks like.  I could not find one on the sponsors web site.  

On other British cars , I have used a bolt with nuts to adjust the height under the pedal bar.   

Jerry