[Gary Lawson]

The part to worry about is how easy the otk karts bend because they are so soft. Also, it Seems every used kart that is see in person has marks on either one or both sides where the bolt for the tie rod end hit the frame from a tie did end breaking. It’s not uncommon for a kart to bend 5mm from simply wheel hopping another kart. Unless the kart was put on a table and atraightened the odds of buying a used kart that is bent is much higher than 50% imo. On the bright side I have worked with numerous drivers that have had bent karts straightened and not noticed any drop on performance.

[Gary Lawson]

39 front and 46 rear is a good place to start based on what newer karts run.

[Gary Lawson]

Give details of the kart/engine you are using and the setup you normally use.

[Gary Lawson]

Sounds like you may be hitting a concrete patch or something high grip mid corner that pulls the engine down?

[Gary Lawson]

I respectfully disagree with any notion that a ride height changes has any effect on mechanical jacking or how the tire pushes into the track. Ride height changes actually do alter your caster setting, although it is minute and ultimately insignificant in comparison to the change in location of the center of gravity. Raising the frame on the front moves the center of gravity further back resulting in more rear grip. The arrow chassis guide explains this topic and many others very well. I tested ride height changes a while back when I was still running margays and my findings were identical to what the arrow manual states. A higher front was a little lazy on turn in but has more grip from apex to exit. The lower front turned in quicker but head less turning power on exit. I liked the front lower on the margay.

[Gary Lawson]

Hey pat give Derek at zero error a call. I knows he’s building them now and did a nice one for pcr. Not sure on price but I’m sure he could deliver to the track for you.

[Gary Lawson]

Maybe sand the pads if the seem glazed. Make sure the linkage is on the highest hole on the master cylinder and the lowest hole on the pedal. Assuming they have multiple holes this will give you the most leverage.

[Gary Lawson]

As most pointed out indirectly you can’t get the rear to 55″ because you have 180mm wheels for your 6″ tires. 53 1/2 is plenty wide for those wheels or go with the 210 and run 55

[Gary Lawson]

I will take the front hub. Have PayPal. Email me at garylawson25@yahoo.com

[Gary Lawson]

Gary Lawson and john dignan are back as The Defending Champs.

[Gary Lawson]

I personally would not trust an engine builder that tried to tell me my kpv engine made 24 hp. And if you had two carbs from this builder and neither would run worth a darn then how did it dyno so well? To pick up 400 rpm you basically picked up a full horsepower! So now I guess it makes 25.5 hp? You Could race that engine in Tag I guess :)

[Gary Lawson]

Noticing your minimum rpm are also off by about 700 it seems like you may have a different gear on it. I’m guessing you have an 11 tooth on the clutch now and last year you had a 10.

[Gary Lawson]

Are you running the same gear ratio, tires compound and size, chassis, and flex length as last year? If you are then it’s likely the engine builder didn’t do a very good job. 700 rpm is about 3 mph! That would add up to a half second pretty easily.

[Gary Lawson]

Low hp you will want closer to 45/55. Some run as much as 47/53

[Gary Lawson]

For someone that knows how to use it with the software the mychron 4 with gps is very useful to pinpoint areas that need improvement.

[Gary Lawson]

Call kartsport North America or slattery racing

[Gary Lawson]

Too much front grip can’t bind the kart for sure but not as badly as too much rear.

[Gary Lawson]

I’ve seen club racers use 35 chain all year with very little to no maintenance and not have an issue at all. 35 is very tough chain.

[Gary Lawson]

As you seem to understand, running new vs used has a few determining factors. Higher hp classes will want new tires as much as possible. Slower classes require them less, especially if the track is grippy. The other main factors are the kart itself and the chassis setup. Some karts get tight easily whereas others want more grip. My sr 206 kart likes new tires usually but I’ve been to tracks where I’ve ran the same ylc’s for three days against all new tires and won. Best thing to do is test it yourself. Midsummer I would be less likely to put on new.

[Gary Lawson]

Have you tried kartsport?

[Gary Lawson]

Ackermans main purpose is to increase to out when turning. Casters main purpose is to change wheel height when you turn.

[Gary Lawson]

Ackerman settings could change drastically if you put a spindle on that has a different tie rod location. Sounds like you already didn’t have the right stuff on it to begin with though. The correct solution is to find out what the kart is and find out what spindle it’s supposed to come with.

[Gary Lawson]

Odds are you don’t have the bearing centered well in the cassette. If they’re tight you need to align them before you tighten the axle down.

[Gary Lawson]

Coyote, razor, mgm, ionic edge, are all 4 cycle specific.

[Gary Lawson]

Where there’s a will, there’s a way.

Or just quit.

It can be done without modifications. And I don’t care what the manufacturer recommends. No disrespect to them. I’ve run with 3″ offset to gain clearance with no issue. the manufacturers give a recommendation on things to try to avoid POTENTIAL issues. Anyway if you actually want help let me know. Otherwise just quit talking about it and sell it because that’s what it sounds like you want to do. The sky isn’t falling chicken little…

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