i got this old yerfdog and im looking to add another set of peddles maybe foldable? something my kids will be able to reach they are 5 and 6. they are not tall enough to reach. im looking for ideas.
I was in your position a while back. Wanted go karts (still looking for #2) for the grandkids to play with., but needed to be able to test drive it myself. So I will show you what I did and maybe you can make use of my ideas. I will do this with three posts. Throttle, brakes, and steering wheel position, so as to avoid confusion (mine) with the pictures.
As with many go karts, my Yerf Dog had a sliding seat. After a fitting session with my grand daughter I decided to make the pedals move fore and aft.
As mentioned in a previous post I drilled horizontal holes in the lower right frame tube and welded in small tubes with 5/16" id. The throttle pedal is then held in the selected position (fore or aft) by a 5/16" dia. drilled pin which is secured by a hairpin clip. I also use a mousetrap type spring as a throttle return spring.
Back toward the seat area I welded the same size tube across the top of the lower frame tube and made a rely lever with a bolt as an axle. A rod joins the throttle pedal to a pivot mounted on the relay lever. The rod has holes drilled in it at the pivot and is held in fore or aft position with hairpins. Also attached to the relay lever is a pivoting cable clamp that secures the throttle cable.
To change throttle pedal position I unclip and pull the pedal pin, pull the clips in the rod, move the throttle pedal and re-install the pin, spring and clip, then put the clips back in the rod in the appropriate holes.
In the pictures you can see the throttle pedal in both positions.





