Gas pedal wont go back

[Blackheart]

Sorry in advance..this is my first post here and first time working on a go kart. But I just bought a yerk dog 3020 has tecumseh 5.5hp 195cc power sport engine... So I'm having a issue when I push the the gas pedal it doesn't go back into place when letting off. Also (sorry idk what it's called) but the metal bar that moves when pushing the gas pedal doesn't fully go back into place like it should... So when I push the gas pedal down I have to move the gas pedal back into place with my hand and the same for the bar that's connected to the gas pedal and goes back that's connected to the speed control. How would I fix this? One picture shows how the pedal stays down the other shows the speed control bar after I put the pedal back in place. Sorry again if none of this makes since

 

[panchothedog]

You need a spring to pull the pedal back. Also, I think there is another one at about the middle of the kart where the solid rod connects with the throttle cable. If you search Yerf-Dog karts on line there is still a lot of info as well as exploded drawings showing parts and location. Make sure you have a working kill switch.
A stuck throttle is a good way to get hurt, real quick. And maybe real bad.

 

[Blackheart]

You need a spring to pull the pedal back. Also, I think there is another one at about the middle of the kart where the solid rod connects with the throttle cable. If you search Yerf-Dog karts on line there is still a lot of info as well as exploded drawings showing parts and location. Make sure you have a working kill switch.
A stuck throttle is a good way to get hurt, real quick. And maybe real bad.

Thank you for your reply.. Yeah thats why I haven't driven it yet. Because my kill switch isn't working. Not sure why.. But I've been looking for what it's missing and how to fix the stuck Throttle had no luck yet. I had a feeling it was missing springs. But not sure where to get those or the locations they go.

 

[Denny]

That’s ok, we don’t make sense either. But Pancho is right you need some springs. Ace Hardware and Amazon are a couple of easy places to find some. Nothing special is needed just maybe some creativity on hooking them up.

 

[Blackheart]

That’s ok, we don’t make sense either. But Pancho is right you need some springs. Ace Hardware and Amazon are a couple of easy places to find some. Nothing special is needed just maybe some creativity on hooking them up.

Haha idk seems like you guys know a lot. Do you know where they would go? I'm not seeing/understanding exactly where springs would go.. Afraid I'll mess something up putting them wherever lol.. Also to find the correct springs. I just find any spring that will fit I'm guessing on the throttle bar?

 

[panchothedog]

I have a Yerf-Dog kart. I am not very good with pictures, but I'll try to get a couple tomorrow sometime.

 

[Blackheart]

I have a Yerf-Dog kart. I am not very good with pictures, but I'll try to get a couple tomorrow sometime.

That would be amazing!

 

[gokartdave]

Hello this is a pic of my gas pedal rod with spring. Not sure if you have that solid tab on your machine.

 

[Edwin Spangler]

A stuck throttle is a good way to get hurt, real quick. And maybe real bad.

You know that lawn mower I posted a picture of.....?

If I ever get around to pulling my security footage, I have a great video showcasing this exact thing; the importance of an easy-to-reach killswitch.

The boy decided he didnt need the seat safety button. "Lets just jam it down with a screw"

Lets just say, the video starts with "WATCH THEEIS" and ends with him chasing the mower thru the neighbors yard(He cant run no 30MPH though) until it crashes and destroys their perfectly manicured garden.

Its such a comically cinematic scene with the angle in which my cameras got it.

 

[Hellion]

What everyone glossed over (because reading the text is easier and the logical conclusion is logical) is the HORRIBLE (sorry) and crude-beyond-compare gas pedal design. *And the brake pedal too assuming it is identical (but it is out of focus). Theoretically it can still work as-is but it is not ideal and is not something you'd see someone build on purpose unless they were seriously devoid of materials and money.

That being said --- The operating rod is mounted or affixed on the wrong axis. It's in a push-pull configuration when it needs to be a side pivoting mechanism exactly the same as the pedal pivot.

Here's a photo of a rod operated gas pedal but it's the same concept for a cable operated gas pedal (if you wanted to switch to a cable). Not sure what the middle screw is for but the bottom has a lock nut on it and the return spring encircles it (torsion style spring). The top is drilled for the throttle rod and the rod itself has a flattened end (or a tab welded onto it) to create the pivot point for the rod. Of course it is assembled loosely (but not too loosely) so that it can operate without binding: : :



You do not need to have a torsion spring exactly like in the first photo; you could easily adapt a more common extension spring to the pedals like this setup:



Of course whatever spring you select needs to be fairly strong to ensure that the gas pedal snaps back to neutral or idle speed on the engine, just like an automobile.

Agreed on the kill switch.

 

[Blackheart]

Hello this is a pic of my gas pedal rod with spring. Not sure if you have that solid tab on your machine.

This is how mine looks on that end

 

[gokartdave]

This is how mine at the other end

Kinda has me confused. So I'm guessing throttle hook up stays where it's at with collar, then get a spring an collar as show in my pic an put it at the end of the rod behind that plate. Gas pedal should be straight up. That should work.

 

[panchothedog]

So I sleep late ( I'm old ) and others have already sent in some good pictures. The spring on mine is how it came from the factory. There is a tab that the spring butts against, and a few inches away the end of the rod is threaded with a lock nut on it to apply compression. It's under the middle of the kart, so lighting is bad. Also picture of another very simple method. Just drill a hole in the pedal and attach a stretch spring from the pedal to a nearby point.

 

[panchothedog]

Looking at your picture, it is totally doable. The collar on the 1/4" shaft probably has a allen set screw and is adjustable ( put the spring between the tab and collar). Or if it isn't adjustable, then purchase a " die " at the hardware store
( about $12 ) and thread the end of the rod and configure it like mine is. Either way, once you get it sorted out, DON'T FORGET to fix the kill switch.

 

[Whitetrashrocker]

Don't over think it.




Best spot for a kill switch. And yes I have had to use it at few times.

 

[Hellion]

Thanks, Blackheart, for the photos. To do it like Gokartdave and Pancho's karts, I have scribbled an illustration on one of your photos:



In yellow, I just drew the amount of rod that you may have already, if you pull the gas pedal all the way back. You need a keeper to keep the spring on there. Could be a knob welded on the end, a locking collar with a set screw, or thread the rod with a die and add a nut like Gokartdave's. Another way is maybe drill the rod through the center, add a washer and then stick a nail or split pin through the hole you drilled to retain the washer and spring.

Don't over think it.

Yeah-but, you didn't put enough (or any?) thought into rider comfort when you mounted your Manco pedals back-asswards.
I mean they may be functional and the hook-ups are solid with a full range of motion but......

 

[Whitetrashrocker]

Man you guys are hard on my pedals.
They fit me and that's all that matters

 

[Blackheart]

Thanks, Blackheart, for the photos. To do it like Gokartdave and Pancho's karts, I have scribbled an illustration on one of your photos:

View attachment 151639

In yellow, I just drew the amount of rod that you may have already, if you pull the gas pedal all the way back. You need a keeper to keep the spring on there. Could be a knob welded on the end, a locking collar with a set screw, or thread the rod with a die and add a nut like Gokartdave's. Another way is maybe drill the rod through the center, add a washer and then stick a nail or split pin through the hole you drilled to retain the washer and spring.




Yeah-but, you didn't put enough (or any?) thought into rider comfort when you mounted your Manco pedals back-asswards.
I mean they may be functional and the hook-ups are solid with a full range of motion but......

Love the illustration. Makes it dummy proof. Which I need haha. That helps a lot seeing it on my own kart. Really appreciate the help. Now I know what to do lol

 

[Hellion]

Love the illustration. Makes it dummy proof. Which I need haha. That helps a lot seeing it on my own kart. Really appreciate the help. Now I know what to do lol

Your odd pedal set-up may in fact be factory-designed. It looked homemade to me. It will still work and work well enough as long as there is a return spring as we've discussed here.

Here's another maybe easier option: just drill a transverse hole through the rod and use some coat hanger wire or similar to attach an extension spring to it. An extension spring is like what you may have seen on your grandmother's screen door. Attach the other end somewhere at the rear of the kart frame. Maybe use an eyelet screw attached to the frame or through it and add a nut on the end. The sky is the limit on possible solutions...

 

[Master Hack]

Can't zipties get a little credit here? Bad illustration, zip tip and spring.
zipties are the unsung heros of backyard fixit. The MTL and hacks everywhere endorse zipties.