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Old 12-20-2006, 08:25 AM   #61
meat popsicle
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I would trust the statements of dirtrider on the necessity of a cush hub - it is more than a damn good idea. You may get along without it, but you run a significant chance of causing damage to your non-cush hub (see dirtrider's post in the link below), excessive wear to your drivetrain (like changing chain and sprockets more often eh?), or transferring additional shock to the countershaft and everything inside the cases...

He is a reliable poster here, rides the LC4s, and has worked in the business for a long time. See: http://www.advrider.com/forums/showthread.php?t=81340
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Old 12-20-2006, 09:41 AM   #62
KTMSER
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Quote:
Originally Posted by snaggleXR650
I would have to agree that loosing the CS bearing had more to do with radial stress (tight chain when swingarm is horizontal) than any possible shock from lack of using a cush hub. The shock that the cush hub helps prevent is in the tranny gear teeth slapping together...
This happened at about 2800 miles. The chain to tight was not the issue if anything I kept it a little on the loose side!!! Lets see riding and wrenching for thirty two years tight chain I dont think so!!!!!

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Old 12-20-2006, 09:58 AM   #63
CatBus
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Quote:
Originally Posted by meat popsicle
I would trust the statements of dirtrider on the necessity of a cush hub - it is more than a damn good idea. You may get along without it, but you run a significant chance of causing damage to your non-cush hub (see dirtrider's post in the link below), excessive wear to your drivetrain (like changing chain and sprockets more often eh?), or transferring additional shock to the countershaft and everything inside the cases...

He is a reliable poster here, rides the LC4s, and has worked in the business for a long time. See: http://www.advrider.com/forums/showthread.php?t=81340
No one seems to be mentioning that it is only those non-cush hubs on LC4 bikes breaking. I would be tend to blame poorly cast hubs or a bad design, or this would be a problem with all dual sport bikes. So maybe the cush is a band-aid for a design or manufacturing problem? We all know other QC problems such as the wheels have slipped through KTM's eyes.

It is also pointed out in that thread that no damage to transmissions has been seen (although it is speculated), and having cushless problems in dirt is unlikely, and probably due to other factors. Again, it points to a hub problem if the transmissions are not suffering ill effects.

So in regard to what I said previously, you should not need a cush hub on knobs. If the hub has design or manufacturing problems that are less likely to happen due to a cush setup, that is a totally different scenario.
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Old 12-20-2006, 11:52 AM   #64
meat popsicle
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Quote:
Originally Posted by CatBus
No one seems to be mentioning that it is only those non-cush hubs on LC4 bikes breaking. I would be tend to blame poorly cast hubs or a bad design, or this would be a problem with all dual sport bikes. So maybe the cush is a band-aid for a design or manufacturing problem? We all know other QC problems such as the wheels have slipped through KTM's eyes.

It is also pointed out in that thread that no damage to transmissions has been seen (although it is speculated), and having cushless problems in dirt is unlikely, and probably due to other factors. Again, it points to a hub problem if the transmissions are not suffering ill effects.

So in regard to what I said previously, you should not need a cush hub on knobs. If the hub has design or manufacturing problems that are less likely to happen due to a cush setup, that is a totally different scenario.
Did you read dirtrider's post? He mentions several different bikes that have come thru his shop that had problems on tarmac without cush hubs. Perhaps the KTM hubs are poor hubs, but we are talkin' about a SXC in this thread eh?

I could take a guess, and say maybe there is little damage transferred thru the drivetrain into the cases because the chain and sprockets take the abuse - via increased chain stretch and sprocket wear. Better than inside the cases, but not a good thing to overlook.

So I will say this again, that is bad advice. Y'all may get lucky running no cush hub on the street - even with knobs - or you might not care about the additional maintenance and parts replacement due to increased wear and tear. BUT you should not tell others "hey, no problem dude!"
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Old 04-25-2007, 11:56 PM   #65
losiu
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Hey guys, I thought I had all the differences between an SXC and a 640 figured out and I just heard the SXC has no fan on the radiator.
Is that true? Any other tricks that I don't know about ?

Does it really matter there's no fan if there isn't?

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Old 04-26-2007, 04:41 AM   #66
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Yep, no fan from the factory. You can add the Adventure fan pieces but for less money I understand you can add the RFS fan kit and just do a little trimming to the fan shroud to get it to fit.

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Old 04-26-2007, 09:53 PM   #67
txrider
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SXC rider here, got right at 5000 miles on it so far, most in dirt, some in moto trim. long days over a lot of mountains and backroads.

Great bike. It vibes a lot but I've never been one that cares about that.

No fan, I got fan parts from an LC4. Not a lot of oil, but hasn't been an issue so far, just change it when it starts getting dirty.

It does have cush hub on the clutch, but any LC4 cush hub will go on it too, even the one on my '96 will fit it just haven't bothered. I just don't shock the drivetrain too hard on the street.

I also went the factory euro parts way for dual sporting it out, euro spec oem blinkers, dash etc.

Put some seal savers on the forks to keep em clean, a fin to kep the rear disk in one piece, got a set of motard wheels for fun on the twisties and put a scott's underbar mount damper on it, and a touratech tail bag.

Went to an 18L tank as well for more range.

Trying to decide whether to try to add an oil cooler to add more oil capacity.

Here's how it came out after I went to black plastics, it's not anywhere near that clean looking and scuff free anymore. :)... SXC pics

It's a lot quicker than my old '96 RXC, but I think the Ohlins/marzochi setup that came on the RXC is bit more plush offroad.
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