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The person who converted my kart to a 420 used this setup. You can purchase it from one of the online sites. They are designed for the small block and it caused all of the TQ issues. Between only being 5 inches wide, drilled and slotted by a blind person and otherwise general lack of precision...

Have you seen these? I sent a msg asking if they could produce a even thicker version as a custom order. https://www.ebay.com/itm/274007323990?ul_noapp=true

New TQ did the trick. 41 mph. I need to make spacers for the jack shaft as the lock collars will not hold it in place. I will also be getting a bigger rear sprocket. It pulls the 54 just fine but will be more fun with a 64. Going to MO tomorrow to pick up a blown up GX 390. Low hr rod...

Lack of power is not a cause. It will spin doughnuts on dry pavement no issue. 18 inch tires, 5.40 gear ratio, predator 420 with header pipe and gx 620 carb. The driven clutch will not open up at all. The driver opens up ok, not the smoothest but reaches full extension. The driver is just a 7.5...

Kart is running under its own power but still only has one speed. New Comet 40 is on its way. Tired of fighting it. Maxed out at 21 mph and will spin doughnuts on dry pavement. Handles the dirt oval pretty well for a big fat pig. Let off to set the front tires and gas it to drift it around.

swapped yellow spring into it and still nothing. Kart runs 21 mph in single stage. That is 4 mph increase from when I got it. Ordering a new comet 40 driver and driven. Tired of messing with it.

Red spring installed, put back in original orientation and again I have only one speed. Now it does run pretty good. It will spin doughnuts on dry pavement no problem but the driven does not open at all. Again looking for input as I am ready to just buy a new comet driven and be done with it.

https://www.margay.com/component/content/article/35-models/166-striker-x1.html ---------- Post added at 03:06 AM ---------- Previous post was at 03:03 AM ---------- Notice the different caster degrees listed in the ad. This is very common on dirt oval karts. This is the problem I'm having with...

Margay did make offset karts. We raced them on dirt.

axle, brakes and motor running Axle got new bearings, sprocket and spacers due to 20 years of wear and tear. The new sprocket has set screws but I went ahead and kept all of the sleeves in place. 1 1/8 sleeve on a inch axle. Sprocket has 4 less teeth. After the first few rides, I will order...

Just sitting around

Couple washers really tightened up the steering. Rod end was fine, just was loose and wallowed the bolt. Washers got it back into good threads. Will be fine for awhile. Bearings spin fine but I am here, gonna replace them, since I have decided to give this rear axle a chance. 54 tooth axle and...

New red spring ordered, buttons, med weights, red driver springs, bronze bushing, 54/10 sprockets with hub assembly and a 40 chain. This will be 4 less teeth on the axle. With the added power, and higher engagement, I don't think it will be noticeable.

I did flip it and it wouldn't move an inch. I didn't try locking it down in the original orientation, but wish I had. It now has the yellow spring in it and am waiting on a coil.

predator 420 this one is governed 10 58 18 33 mph ---------- Post added at 03:10 PM ---------- Previous post was at 02:50 PM ---------- You can follow along in the photo section. It is Polaris XB1. Predator 420 with HD springs, header, 24mm carb off a gx620. Governor is still at stock speed...

I bought a street/track 420 from NR Racing. Factory based cam, billet rod and flywheel. Spins 5500 rpm. 28hp @ 4000...... 40tq @ 3250........still has 22 hp and tq @ 5500 rpm

Parts, parts and more parts Stage 1 hop up kit, header, 24mm bored carb are ordered, along with the yellow spring. This thing is gonna be great! It does sound great! Why wont it start this morning? It sounded great last night! Switching the ignition to genuine Honda parts. Coil is really...

Gps Lets do math: 3600 rpm, 18 in tire, 10/58 = 33mph if memory serves me correct. Seat of the pants says NOPE. GPS says 17 mph. It seems to be stuck in 1 gear. Kinda quick off the line. Stayed with that darn 212 for 50-60 ft then just stopped accelerating. I think I know what the problem...

I traveled 3 hrs to pick it up in central IN. Test ride showed it was slow as crap, but no slipping belt, motor smells, vibrations or smoke. Loose steering but nothing bent to bad for a 20 year old yard kart. Mechanical brake works as parking brake but needs attention as it isn't gonna stop you...

Here it is the day I bought it. As stated in my first post on the site, they seem to be very rare. My local Polaris dealer had never heard of one. He has been a dealer since the 70's. My intentions were not to change it as much as I am, but thats how it goes. If your a purest, this might be a...