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Post by romanowski on Jan 15, 2009 11:55:52 GMT -6
Josh, I realize it was a last second thing with this sled, and I'm very happy for you guys. I'm sure you will find more in that 250. I will also point out the obvious, 12 sleds in the 250 class, and close to 40 sleds in the 440 fan, hence making the finals in 440 fan is much more of an accomplishment, 3 out of 4 sleds watched the rest of the field run the final on Sunday in that class. As you know I eat, sleep and breathe kohler/hex clutch combos, I dont waiste money on porting and that related stuff, my trail twister has a $75.00 boneyard engine in it and I'm still running the same pistons and rings for 5 seasons now. I would love to make your nitro II come to life, it wont take much, that sled has in my opinion lots of potential. I cant believe you guys don't jump all over that offer. Not many guys will go to the extent I will to offer help, I want you guys to be running up front right with me. As for the the xenoah, I'll be right up front, I no little about them, and dont really care to but I did offer some good advise to you's so please use it.
You know I love to stir it up on this site. At least I called the kohler a toilet.
Good Luck, Paul
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Post by Ruppsforever on Jan 15, 2009 18:48:23 GMT -6
Paul I think your offer is great !! Its not my sled and its not up to me. Its what Luke decides. The 250 I have taken a liking to. Probably cecause it has the components that I'm more accustomed to. We're going to get it on the timer this weekend. Also the 440 were going to be doing some backtracking to see if we can get the bugs worked out. The sled was the fastest with the original rupp clutch on it. Thats Scary !!!! I'm so happy with my 440 Magnum that I'm concentrating my efforts into Lukes oval stuff right now. Its fun to watch him run.
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Post by Ruppsforever on Jan 17, 2009 22:55:52 GMT -6
Luke the F/A and 76 magnum use the same bulkhead. I am giving you this idea because you bent a ski spreader and lost some places because of it. There gets to be a lot of pressure on the spindle when you use ski spreaders on a Rupp. Next time you might break a spindle wipe out and get hurt with the ski spreaders on. Rick, thanks for the great advise. That makes so much sense. I think were just going to reinforce the bulkhead now and skip the ski spreaders. |
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Post by onlyhere4themoney on Jan 18, 2009 7:20:54 GMT -6
Luke the F/A and 76 magnum use the same bulkhead. I am giving you this idea because you bent a ski spreader and lost some places because of it. There gets to be a lot of pressure on the spindle when you use ski spreaders on a Rupp. Next time you might break a spindle wipe out and get hurt with the ski spreaders on. Rick, thanks for the great advise. That makes so much sense. I think were just going to reinforce the bulkhead now and skip the ski spreaders. Paul doesn't think so but then it is pretty obvious he can't tell my why. |
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Post by kronnikracing on Jan 18, 2009 11:47:52 GMT -6
Well we had the two sleds on the timing system yesterday for a couple hours, some good news some bad, the 250 wasnt really running that great, made a couple quick carb changes and started making some runs, seemed like the track was skipping horribly so we tightened the track, and tightened the track and so on, still it would skip really bad so we quit with that thing because we were thinking something got bent also up at eagle river, come to find out when we were loading them up josh thought, shit sounds kinda like that chain case skipping, so when we got it to the shop we tore it apart and sure as shit chain was way to long, need larger chain tensioners or a shorter chain. but the 440 actually ran really well, just made a few clutching changes and bam we were down like 6 tenths of a second in 450', still has alot of possible changes but at least now its almost shifting all the way out, and gaining some serious ground on the competetive 440 fan times ive read about on here. No testing will get done today, time for some motor work and shop time till next weekend.
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Post by wigman25 on Jan 18, 2009 12:37:12 GMT -6
You can get big chain tensioners right from Cat - they are about 1/2" bigger than the stock ones used in the Nitros and they work great - perfect for loose chains. Wig
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Post by romanowski on Jan 18, 2009 12:48:17 GMT -6
Luke toss out the ski spreaders get 75 F/A bulkhead convert it to a jackshaft and put your 76 nitro tunnel on it. Josh will know what to do from there. Rick, My interpetation of what you were suggesting was to make the nitro II into a liquid rupp, this is why I thought that would be a bad idea. As for the 250 that luke runs, Yea, ditch the spreaders, make it into a stocker magnum with the wide bulkhead, whack off the tunnel, 100 inch enticer track, liquid twister rear skid, cut the skis down to 20" and use the shorter springs, and while you are at it try my 250 twister pipes on it and run it on your dyno to see if makes some more hp. then a hex clutch with engagement about 6500rpm and watch out........ Speeking of........ WATCH OUT ......... the 72 nitro is coming back to waconia. This old S.O.B. simply amazes me. The TOHATSU TORQUE MONSTER, is getting quicker. |
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Post by onlyhere4themoney on Jan 18, 2009 13:03:56 GMT -6
Paul..... Jake and I are not going to race this year. at Waconia or Waceca.
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Post by kronnikracing on Jan 18, 2009 18:04:40 GMT -6
Paul i would definatly be interested in trying a set of the 250 pipes on the dyno, that would be kind of fun, only bad thing would be, cant run them in the super stock class, we have a set of twister pipes out in the shed, dont know what size they are for, but i think they are for the 440 fa motor, by looking at some sleds in the pits this year, josh and i need to find a transfer pump for our dyno, cant run a garden hose all the way out to the shop with good enough water pressure, but hopefully later this winter or spring we will get that thing out a little more and start messing around with other pipes. One other question for ya paul how the hell do you get a sled with like a foot and a half of track on the ground to hook up with a 6500 rpm engagment, seems kinda high, only once in a race do you need that high engagment.
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Post by onlyhere4themoney on Jan 18, 2009 18:50:57 GMT -6
Luke toss out the ski spreaders get 75 F/A bulkhead convert it to a jackshaft and put your 76 nitro tunnel on it. Josh will know what to do from there. Rick, My interpetation of what you were suggesting was to make the nitro II into a liquid rupp, this is why I thought that would be a bad idea. As for the 250 that luke runs, Yea, ditch the spreaders, make it into a stocker magnum with the wide bulkhead, whack off the tunnel, 100 inch enticer track, liquid twister rear skid, cut the skis down to 20" and use the shorter springs, and while you are at it try my 250 twister pipes on it and run it on your dyno to see if makes some more hp. then a hex clutch with engagement about 6500rpm and watch out........ Speeking of........ WATCH OUT ......... the 72 nitro is coming back to waconia. This old S.O.B. simply amazes me. The TOHATSU TORQUE MONSTER, is getting quicker. Paul this just shows you..... you need to get your head out of the toilet once and a while.  |
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Post by Ruppsforever on Jan 18, 2009 22:17:49 GMT -6
Hey Keith !! Any idea what the Cat part numbers are for the bigger tensioners ?? I know I had some but they must be in use already. If worse comes to worse we'll go with a external tensioner. ALSO keep reminding me about them hoses your looking for !! I probably have them. Just very BUSY right now.
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Post by wigman25 on Jan 19, 2009 9:52:47 GMT -6
JOSH: If I am not mistaken, they are the 0107-228, which is the pad used on the '81 El Tigre. The standard one is the 0107-411 used on the older models, including the Rupp. They are only about $5.00 each at the Arctic Cat dealer, the dealer here carries them in stock. You can look the OEM drivetrain parts up right online at www.arcticcatpartshouse.com They have a great site and their parts are discounted nicely. Wig |
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Post by romanowski on Jan 19, 2009 17:35:55 GMT -6
Rick, now that was a low blow..... I tell you what, if the 72 wins the waconia cup again, I'll bet Westaby will have on the hood, THE SUPER KOHLER FLUSHER, AND A MURAL OF SOME TRAIL TWISTERS SWIRLING AROUND IN THE TOILET BOWL
Josh, 100 inch track with 220 studs = monster launch. The pipe deal, well I would say this I know there are some illegal pipes running in superstock now, and how can you tech for instance the 340 vs 440 merc pipes with out having 2 sets side by side, most people dont even know they would have the wrong pipes on the sled. Anyhow it would be neat to see if the merc pipes wake up the xenoah.
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Post by romanowski on Jan 19, 2009 17:44:04 GMT -6
Even in oval racing, you want to be the first one off the line, it's a lot easier to race your own race when you're out front this is why you want hard engagement.
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Post by bankRUPPt on Jan 19, 2009 19:53:16 GMT -6
Josh, there's a chart for what chain and tensioner blocks to use with what gears. I have one (somewhere! I think it's in a Z mod manual), but I would still go with an external adjuster from a newer cat case. And I would still try to keep the chain length in check...
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Post by romanowski on Jan 20, 2009 10:40:34 GMT -6
luke, what is the bore and stroke of the 250 xenoah? The 250 s/t is 51.5 bore 60 stroke. Just curious, if the strokes are close I think the merc pipes might work.
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Post by Ruppsforever on Jan 20, 2009 20:00:41 GMT -6
54.8 mm bore x 52.6 mm stroke.
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Post by romanowski on Jan 20, 2009 21:23:19 GMT -6
Wow, those engines are way different in dimmensions, I doubt the pipes will work with the stroke that much different, I would like to see though.
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