favoritos

Still have one. It does run. Got rid of 19, 20, 21, and probably one of the 22 sleds this spring. The stock 18 is the one to beat and those have not done the job. The 22 sleds were close until the clutches started pooping parts into the scrap bin.

Looks like a groove on the fixed sheave right where top of the belt sits when it stops shifting. I hope I'm wrong.

What's the story? Looks like a 2S with the heavier ring. I would have thought those would be better on harmonics vs. the ring gear.

Vespel is a good 1/8" wider and a hair taller profile. They worked better on new Procross sleds if you swapped out the smaller plastic wheels for the slightly taller older version. The rail fit seemed dang close to stock. I have a set of Tiger slides that I have not installed yet. Without exact measurements, they are close to stock profile. They come with extra holes drilled for the Alpha rails but I'd be cutting that section away for shorter rails. @joe_zrt , pretty much summed up the other details.

Odd deal with the weights. My scale isn't super fancy and I just do zero reset vs. calibration. It's a good tool to compare but I wonder. . . ? I've never seen a set over spec. I just weighed the 64g set and two were exactly the same 63.84. The last one was 63.64. 60g set ranged 59.20 - 59.74. I have a couple 66g sets with weights ranging 65.51 - 65.82. Those have a nice tight grouping. Scale calibration can obviously vary. They should still give good comparison numbers from the same scale.

Those smooth sheets are dang slippery with about two flakes of snow. I've had a couple trailers that came with a strip in the middle of the ramp doors. Seems like someone always forgot and landed on their tuchus. Best thing for that is letting one of the kids try out a brand new set of studs on the ramp. A couple of nice spin sessions roughs up that stuff in no time.

Yepper. Dealer has the clutch on hand with spring included, but they don't stock the spring?

I found a Cat spring part number 1646-005 , listed as a 85/255 rate. Had to order it non refundable. It doesn't look like a normal stock item. BTW, our little 65/255 spring is not available. I'm a little curious to see what is replacing the thing.

I wasn't too clear. I wondered about the secondary. Wasn't sure if you had swapped again? So, just to be clear this time. Are you running stock spring with the 48S or is that with the 155-220?

The ADAPT weight numbers for reference are 1 gram over the number stamped on them. It's a goofy way of doing the numbers, but that's what they use. Haven't weighed the bushings, but I've weighed quite a few with bushings and the actual weight is just under the rated number. I.E. 66 gram reference number actually weighs 65.70 grams. Here are a couple sets of 116-65, (66g) weights with bushings. I wrote the decimal point over 65 on each.

Add the weight of bushing. It's a 66 in the pic.

Dangit

Is that still running 66g with stock secondary? I found one bolt loose on the jackshaft end of the TCL. That happened after initial break in miles. I guess it's worth checking behind the primary too.

I'm in agreement with the concept. Clutching is a complicated subject. I'm terrible at just plopping words on a screen to describe. The idea you mention is relevant to the current stock setup. The 800 sleds are shipped with 85/225 rate springs against the same secondary we have in the Catalyst. The primary rate is 65/255 on these little 600 motors. The stock setup works well for low and midrange speeds. It's pretty strong out of the box unless you like clicking over 80 mph. I'm guessing it will scare a stock 800 for quite a stretch. The stock 800 will keep pulling but it isn't much of a beast past the 600 Catalyst speeds. We've kinda ruled out the secondary as the variable with both sleds using the exact same helix and spring. Who knows, it may be the limiting factor on both. The stock 600 Catalyst setup works well for typical trail riding. It's pretty close but that doesn't mean we can't find more. The 80 wall is frustrating because it just gives up. We're not running out of gearing or rpm, it just quits pulling. (Unless you hit miracle horsepower ice.)

That's great info. I did the same thing with weights. Dang glad I found the altitude kit pricing. The Cat profile isn't too bad and they have held up longer than adjustables in my experience. I'm not really a top speed guy. I do tend to ride fairly fast and I've been trying to find something that holds up for high speed long hauls. Been throwing together a few different secondary setups to try. I found promo pricing on a M secondary with the 48S helix. Already had a couple of 155/220 springs so I built one of those combos. I'm impressed the primary with big weights pulled that secondary. If we get snow I'm thinking about trying the 64g. Seems like I'd need a little heavier initial rate on the primary spring to rev up those weights. I bet the finish rate is dang close.

@Palu49, I curious to see how the primary rpms out. What spring did you decide with the weights? I wonder if we both did the same thing on the secondary? I wish I would have bought a couple more when I saw the loaded setup cheap this spring.

We were up there last week. Rode Wakefield, Bergland, and Bruce early in the week and did Copper Harbor later in week. I would bring plenty of carbides and hyfax if they want to think about riding. Trail 3 was already done south of Twin Lakes. I think the biggest bummer is the fact we could ride early in the week if we stayed north. That was already fading by late week and I'd be shocked if it's rideable now. Without the extended meltdown, it would have been easier to save the trails. One oddball thing with the snow this season was the depth right next to the lake. It often drops anytime you are close enough to see the water. Those stretches actually had snow this year. It was a real bummer to see some of our favorite places with empty parking lots. We even went to an old place (Fishtales) with new owners on Gogebic. The new owners changed the name to Finn and Feather? I'm honestly not positive, but the food was damn good. I sure hope they make it through this season.

I've seen loose tracks slow us down when they rub in the tunnel. It can be pretty significant. How tight is too tight, I don't know on that side. For the record. The Cobra and Rip II tracks have both stretched a lot this year. Two rounds of retightening so far on both with only 550 miles. I usually need at least one round this early and they settle down.

I bet you can find stainless rivets that are already coated black. I've used those on repairs and keep a pile on hand. Not sure about the wrap idea if you're talking about putting it between tunnel and repair. I like structural sections riveted together tight. If talking about covering the final, go for it if you want.

I just pop the cover off without pulling the clutch most of the time. I've changed weights along the trail with that method. I looked at the Catalyst before changing weights and didn't even bother trying to pull the clutch. After all, I was only changing weights. No need to tear the side belly pan apart. I did pull the two T25 screws to allow a little more flex on the panel. Also worth noting. The spring pressure is super light. Compressing the cover is a two finger jobber when putting the thing back on.

Mine came with a .090 and .060 which was a surprise. I've had quite a few previous sleds with the BOSS and they all had one .090 shim. My motor on the RXC sits further left than the other one. I haven't looked at the motor mounts, but the two sleds are definitely set up different. The RXC creeps the track on the stand no matter where I align the secondary and the primary is rubbing on the gray flip down doo hickey. The other sled does neither.

Dang. I didn't see that kind of mileage. The gas stop planning was modified with the smaller tank. It wasn't a deal breaker but it was needed.

The compartment sure does well to warm and dry stuff that fits. I ended up modifying the mounts on a NS1 gauge and using the Cat gps bag for compartment cover. The dang thing fits really good. The modified mounts also tilt it back a bit so I'm looking straight on vs. stock gauge tilted forward. I also found out that the gauge location is pretty sweet if you get an ice storm overnight. I went out to clean off the sleds and the gauges were clear.

Funny that you mention the first line. We put about 550 miles of pure junk miles on this week. The consensus on describing the ride is that it's easier to ride. Bud is one of those that never moves around on the sled. The easy ride thing is a huge deal for his riding. He can ride one heck of a lot better on these without moving around. I had a hard time at first with the higher seat. I typically move to the inside of the sled and it took a little time getting used to the chassis and seat. I used to basically hug the tank before. I've found that these work with me riding further back with my feet and body. The side to side transitions are still a bit more work, but the stand-sit transition is gravy. Overall it is easier to ride in junk. I'm really becoming a fan of the way it handles the Oh shit! potholes. The chassis setup and rider position make those big hits easier. I wouldn't call the RXC a big transfer feeling skid. I swapped between two 137 sleds this week. The RXC moves to a point and then it basically stops at coupling. Drag racing was tough in deep hardpack. It transfered good at first and then locked up on launch. The bugger was a hole digger if you hit the transfer stop point. The other sled was an ATAC version and running it on soft had better transfer in holeshots and riding bigger stutters. Also notable for me. The seating position and bodywork makes the sleds seem faster. You feel more out in the open. There were times it seemed like we were flying through tree lined sections and the speedo was saying numbers smaller than expected. The whole feeling is a little surprising because the wind protection works pretty good except wind stream over the top. I myself would like to see a slightly taller windshield option. The current tall version puts a lot of air right at face level. That forces me to use bulkier helmet combos to stay warm.

This was mine on delivery. Seems like there is a fair amount of room to move that front shock and tunnel cross shaft around as mentioned. I figured the extra holes were for the ice racing guys. Each adjustment from stock lowers the sled in that section. I expected to have corresponding holes for the rear scissor mounts too. That would actually make more sense for the extra coupler holes.