Worried about lack of Cush Drive... any advice?

Discussion in 'Thumpers' started by cap'n Jack, Jan 15, 2008.

  1. cap'n Jack

    cap'n Jack YAAARRR... or something

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    So, I'm heading up north for the weekend, Los angeles to San Luis Obispo. Not a long trip, most if it was supposed to be off-road but all the good routs out of Los Angeles are closed for the season. So I am forced to slab it all the way up to Soda Lake area. That and the direct route back will put a few hundred miles on my NON cush drive rear wheel...

    I ride a 625 SXC. Am I asking for trouble or is this nothing to worry about?

    thanks for the advice,
    Cooper
    #1
  2. Yossarian™

    Yossarian™ Deputy Cultural Attaché

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    It'll be fine.
    #2
  3. cap'n Jack

    cap'n Jack YAAARRR... or something

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    Thanks Yossarian, that's kinda what I thought...

    However I think I'll get a second wheel with Cush sometime in the future just to lower the risk of blowing out my transmission.

    coop
    #3
  4. crazybrit

    crazybrit Long timer

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    I have a cush rear and a regular on my SXC. If you're running knobbies I wouldn't worry about it. See the FleaMarket for a guy looking for a new rear for his SXC where he trashed the hub. It happens. Probably not in 300 miles even if you were running Saharas (or some non knobbie).

    Also OC is the wrong forum for this, it should be posted in thumpers.
    #4
  5. roc104

    roc104 Been here awhile

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    I dont remember seeing any transmission issues on an SXC due to a non cushioned hubs on the street...Actually, I dont remember hearing about any transmission issues period. But as Crazybrit said, i have seen a few cracked hubs.

    That being said, I installed one on mine for piece of mind :D
    #5
  6. crazybrit

    crazybrit Long timer

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    The tranny is already dampened. It's the hub thats the issue.
    If you're doing a lot of street miles on dual-sport tires it's worth adding
    as a hub failure at speed could be unpleasant.
    #6
  7. cap'n Jack

    cap'n Jack YAAARRR... or something

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    I got ya, so the knobbies help dampen the torque of the wheel, taking the pressure off of the hub. less knobbies more torque on the hub.

    Glad to hear that the repair would be on the hub and not the transmission. This definitely gives me piece of mind.

    thanks again,
    Coop
    #7
  8. Beemer Pat

    Beemer Pat ...

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    #8
  9. Ned1

    Ned1 Lend Me Yu Choppa

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    +1 on cracked hubs and the odd broken spoke.
    #9
  10. GodSilla

    GodSilla I did that.

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    Different bike I know, but I have done thousands of kilometres on my XR600 on highway and I've subscribed to the theory that sacrificing knobbies is an effective, if crude, form of damping. Seems to have worked for me so far.....
    #10
  11. team ftb

    team ftb Befuddled Adventurer

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    The cush drive helps absorb shock loads delivered to the hub through the tranny. Strong shock loads would be strongest during low speed, high traction throttle inputs. for example, tight canyon pavement corners and super motard tracks. Droning along the interstate and cruising on the pavement I believe will transmit minimal loads to your hub.

    You should have no problems. Good luck.
    #11
  12. Noreaster

    Noreaster Fat and Cuddly again

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    You know, every one loves to pimp that site but I haven't found that there is a lot of information on there. (Admittedly I am a total NooB over there and might not have the place figured out yet). There are a LOT of words typed though. It is my opinion that of all the "other" sites out there you get a more mature and knowledgable demografic on ADVrider and along wiht that the best answers to you questions. YMMV.
    #12
  13. Hair

    Hair Outside the boxer

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    Be sure that you have the sprocket bolts torqued down. Use blue locktight to hold them in place. If there is any give in the bolts you will have a problem.
    #13
  14. Hair

    Hair Outside the boxer

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    Hi Pat, From the looks of things you will be test riding a berg before the summer is out. Saturday I'm headed over to Prescott to pick one up.
    Wish me luck.
    #14
  15. Loadedagain

    Loadedagain making chips

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    i have broken hubs of rigid wheels riding on the street. for 300mils you'll probably be ok though. problem is if you crack it you wont know for some time... if it were my only bike i would do it. if i had the extra cash i would spring for a used cush wheel off fleabay.
    #15
  16. mo' tarded

    mo' tarded Turnip Truck Driver

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    This has been debated for some time. I have seen some attest to this as fact, I have seen some dispute it hotly. I don't profess to know the answer, but no one I know of has been able to come up with part numbers for this device.

    Over on the "informationless full of typed words" :lol3 KTMtalk, this has been discussed numerous times with parts diagrams and parts lists.

    Maybe someone on this site can prove the point.

    :turkish

    AFA KTMtalk it is FULL of knowledge. The search feature is your friend. But you have to set the search criteria correctly each time you use it.
    #16
  17. Tifosi

    Tifosi Been here awhile

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    I think the consensus is that no you don't have to have it but it won't hurt you if you do get one. Just keep an eye out for a 640a rear wheel or hub for sale and slap it on a spare wheel. you will have a second wheel and the different hubs to back to back compare. Rally pan am and a lot of the rally guys use the cush rear hub to keep some of the shock out of the drive line so it has a basis for use. I am just looking for a good deal on a wheel then I will send to woodys to get the rear drive installed and the rim freshened which also seems like the standard plan of attack.
    #17
  18. Ned1

    Ned1 Lend Me Yu Choppa

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    The clutch basket has rubber damping. Not much else to say.
    #18
  19. wrk2surf

    wrk2surf on the gas or brakes

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    All the work of relacing rims to hubs seem like too much time and work when you can get one for 404.00 on ktmtalk from munn and its brand new w/new rubbers etc. Or you can just ride it. It took me 30,000 hard miles on my 03 625 to crack a hub and the standard 625 wheel cost 368.00 now also the 02 640a wheel cush hub set up comes with a wider rim 2.50 as opposed to 2.15 but then again tire changes on a cush drive is longer and harder!
    so......... whatever I said........just ride the thing!
    #19
  20. crazybrit

    crazybrit Long timer

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    Is this including the brake disc and/or sprocket? If it's just the wheel, last time I checked, CycleZone KTM was $370-ish.

    I got a used one w/ brake disc off FleaBay. Not sure it was the best idea, lot of miles on it and the brake disc was warped like a dinner plate. Me and the seller had to have a few words. The double sprocket support bearing costs $$$ too though it's less aftermarket. They're actually fairly hard to find on eBay. If you go that route, you've also got to worry about it not being true and the condition of the hub/spokes. I did ok but I've bought my share of horribly out of true wheels on eBay.
    #20