420 predator governor linkage question

[Grimace]

Oh it tries to flood, but I get off the gas until it settles down. Is there a carb that would be better than the stock unit or should I try to tighten the slack out of the big governor spring. It has a lot of play in it before the throttle catches it to pull toward wot. Could be that the spring isn't tight enough to keep the governor rod pulled tight?

 

[jamyers]

Yup, best to make sure it's adjusted correctly. Not sure how exactly on that engine, but the Briggs website has a decent write up on doing it, and I'd think the procedure would be the same.

 

[Doc Sprocket]

Sounds to me like (amongst other things) your suspension is not dialled it right. If you're bouncing that badly, it's not doing it's job. You might just as well have a rigid frame.

 

[Grimace]

Not sure how to adjust my suspension, the coil overs have no adjustment, and my frame/swing arm mounts are fixed with no adjustments.

I will read the B&S website for the adjustments, thanks you guys.

 

[jamyers]

Does it have Mechanical shocks? They don't really absorb much, for that speed I'd get some decent actual hydraulic shock absorbers.

 

[Grimace]

They are gas/hydraulic coil overs. The springs are pretty stiff. I am 6'3" and 285 lbs it takes a lot to compress the springs. I can drop the tires to 14 psi or so and see if that helps.

 

[jamyers]

Might look into ways to soften the effect of the springs, like my latest entries in my Yerf-Dog build thread (relocated the upper mounts to get more of an angle for the shocks). It lowered the kart height, but really softened the ride - before it was hitting the extension limit of the shocks, now it doesn't as much.

 

[spyder1968]

i ran into the same prob with my stock carb cutting out on rough terrain! for me it took swapping to a tillotson carb to fix it. the added bonus was it made the engine much more responsive ( snappier) had heard that they were tricky to tune...but oddly enough, i got it tuned in a couple runs! good luck with it!
all goodies on my kart (and part numbers and websites) can be found on my blog.

 

[Grimace]

I looked at your blog, but didn't see the part number for your carb. You have a 420 predator? If you don't mind, could you post a link or where I can buy one? I went to the tillotson website, but don't know what carb to buy. Thanks.

 

[Grimace]

Here is a pic of my rear suspension angle. Is this about what you did jamyers?
http://img.photobucket.com/albums/v...41-A5F9-44A81ED70702-187-000000084CF6166E.jpg

 

[jamyers]

Looks about the same - check my yetf dog build thread in my sig for pics.

 

[spyder1968]

here is the link to the page with the carb info.............scroll down to
"frankenstein carb and accessories"
you will find the website and carb and intake part numbers. i am running a 420 cc clone, but it is not a predator. ( mine came from carrollstream.com) also note.....fuel pump isn't necessary if you have a good gravity feed.
http://charliesgokartstuff.wordpress.com/parts-info-for-frankenstein/