Page 1 of 2 1 2 LastLast
Results 1 to 25 of 45
  1. #1
    mtbr member
    Reputation:
    Join Date
    May 2013
    Posts
    1

    Rockymounts Driveshaft - Problems

    Anyone find a solution to the Driveshaft so it doesn't rock? Someway to make it more secure? Thanks.

    Details:

    I recently switched to a new Fox fork with a 15mm thru axle, which I was excited about. I use a Rockymounts TieRod on top of the Suby, and since it required a thru-axle adapter, I chose the Rockymounts Driveshaft, the only one which locks.

    At first I had it set up less than idealy, and the whole bike rocked back and forth from the front of the car towards the back. I emailed Rockymounts, and they cordially suggested I run the TieRod skewer thru one of the holes up higher and it would help mitigate the problem (he did not say it would fix it.) It still rocks, but a heck of lot less. I drove to the trail the other day and it moved around a lot but did hold on.

    Has anyone come up with a way to make the whole thing more secure, tighter fits?

    Thanks, Scott

  2. #2
    mtbr member
    Reputation:
    Join Date
    Apr 2006
    Posts
    2,527
    Can you post a pic of how you have it oriented?

    And dumb question but you're using the 15mm insert, right
    '12 Transition Bandit 29
    '13 Surly Big Dummy
    '15 Specialized Fatboy
    '14 Kona Zone Two

  3. #3
    code: mtbr2011
    Reputation: cracksandracks.com's Avatar
    Join Date
    Oct 2009
    Posts
    1,043
    it's rocking front to back, or side to side?
    if it's front to back position it so that it is almost resting on the top of the head of the rack....if it's side to side, then you could have a shim issue.

  4. #4
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    I'm having an identical issue. I temporarily hucked it up there last night just to see how it sat. No matter how tight the skewer and rear wheel ratchet is, I can still move the bike forward/backward using my hands rotating on the rear wheel. I need to keep the driveshaft for its locking ability, but the rocking front-to-back is irritating. Anyone have a solution/idea yet? I don't trust putting my $5k MTB on the roof with this kind of movement.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Sep 2004
    Posts
    184

    Double rear rachet?

    Quote Originally Posted by chrisingrassia View Post
    I'm having an identical issue. I temporarily hucked it up there last night just to see how it sat. No matter how tight the skewer and rear wheel ratchet is, I can still move the bike forward/backward using my hands rotating on the rear wheel. I need to keep the driveshaft for its locking ability, but the rocking front-to-back is irritating. Anyone have a solution/idea yet? I don't trust putting my $5k MTB on the roof with this kind of movement.
    I think Rocky Mounts suggests two rear wheel ratchet straps to eliminate the fore/aft movement. I've done that and it does keep it to a negligible minimum.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by angelo View Post
    I think Rocky Mounts suggests two rear wheel ratchet straps to eliminate the fore/aft movement. I've done that and it does keep it to a negligible minimum.
    I had a long spirited discussion with rocky mounts about this adaptor and any potential solutions, to which this is the only one. So they sent me a free wheel strap so that I can use two of them now. We'll see how it works this weekend.

  7. #7
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Hey everyone again -
    So I had a very scary situation today driving to China Camp. I am using a RockyMounts Euro Pitchfork and Driveshaft ("DS") all attached to my Thule setup with Aerobars. I have the Pitchfork installed via the sliding slots. I'm having nothing but constant problems with the DriveShaft.

    About 15min into the drive, the DS managed to push itself completely back flat on top of the Pitchfork rail. I ride an XL Mojo HDR, so fortunately when the DS hit the rail I heard it and looked up and saw that it had rotated all the way down. Because of my frame size, the rear wheel ratchet is all the way pushed to the end anyway. Because of that, I can't run two rear wheel ratchets (despite Rocky Mounts sending me a 2nd for free as a "solution"). Literally, the rear wheel was hanging onto the rack by maybe 1/2". This happened THREE times on the drive; each time I had to stop, re-situate the rack, then drive a bit more. In the process of all this, the third time I accidentally left my set of rack keys up there, and lost them on the freeway somewhere.

    I have decided that I am COMPLETELY DONE dealing with these thru-axle adaptors that have zero engineering built in to prevent rotating. I seriously have the Thule skewer handcranked so tight that I actually am afraid of breaking/bending the skewer when locking it out. I simply can't get the skewer any tighter, and I use a mini flathead to crank down the ratchet as well. I simply can't think of anything else I could've done to prevent the rotating of the DS.

    I can't be the only person out there that has a thru-axle using a DS. Is there really NO other options for us thru-axle guys than these damned adaptors? I've lost patience with this product, and was so terrified to put the bike back on the rack after my ride that I put it all inside the car.

    What other products out there are available with a straight thru-axle slot built directly into the rack?????

    Please help. I'm desparate.

  8. #8
    mtbr member
    Reputation:
    Join Date
    Jan 2006
    Posts
    1,737
    So why is it the adaptor manufacturers fault that the skewer cannot tighten down on the adaptor? maybe the question should be " why cant rack manufacturers design a skewer that prevents slipping"
    I have almost lost my road bike, with 9mm dropouts with no adaptor, come loose on my friends Yakima rack while driving through a strong cross wind, had to re adjust several times. So its not Hurricane or Rocky Mounts fault, its the rack manufacturers problem.

  9. #9
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Hurricane Jeff View Post
    So why is it the adaptor manufacturers fault that the skewer cannot tighten down on the adaptor? maybe the question should be " why cant rack manufacturers design a skewer that prevents slipping"
    I have almost lost my road bike, with 9mm dropouts with no adaptor, come loose on my friends Yakima rack while driving through a strong cross wind, had to re adjust several times. So its not Hurricane or Rocky Mounts fault, its the rack manufacturers problem.
    Judging by your name, I assumed you worked for Hurricane. A quick search of other "rack" posts confirmed that is the case. I'm not surprised you're here to deflect blame in this situation. Flat-out, these adaptors are lazy engineering (Hurricane included), likely by people who don't ride bikes or put their bikes on a roof rack. Would've taken mere minutes to find out they rotate when out driving (vibration) and headwind. Since Hurricane doesn't make the skewers, I can see where the defense comes from. That attitude will definitely steer me from buying Hurricane stuff now though.

    In my case, Thule only makes my car frame towers and the Aero bars. RockyMounts is responsible for the bike rack (and its corresponding bike skewer) and the DriveShaft. I run no Thule product that contains a skewer.

    Quite simply, the MTB world has thru-axle forks almost exclusively now, mostly 15mm and 20mm. There must be TONS of people having to use these thru-axle adaptors. I guess my question is, really, why can't a product like the RM Euro Pitchfork come with something like the RM Driveshaft SD or the Locking Clutch? I mean, damn, just something that doesn't rotate. I'm actually pretty surprised there's not more discussions about this found anywhere.....
    Last edited by chrisingrassia; 05-04-2015 at 03:53 PM.

  10. #10
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    I also think there has to be a better solution. My thule adapter rotates back, so that it is resting on the yakima copperhead tray. I would rather have that than rotate forward, and have touching between my fork and the adapter.

  11. #11
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Chad_M View Post
    I also think there has to be a better solution. My thule adapter rotates back, so that it is resting on the yakima copperhead tray. I would rather have that than rotate forward, and have touching between my fork and the adapter.
    Certainly a valid point. Since I have an XL frame, I can't lay the adaptor flat back and still ratchet the rear wheel down, it's hanging off the back of the rack then. Conversely, I can't push it all the way forward either because then my brake caliper 6" post mounts interfere with the adaptor. Overall, the DS product just simply doesn't work for me.

    I'm SO incredibly lucky I didn't lose my entire MTB on the freeway yesterday. I won't ever use the DS product again. About ready to sell all my Rocky Mount stuff if I can't devise a better solution.

    Honestly RockyMounts, is it really so hard to produce something like this......from your OWN products that already exist.....
    Rockymounts Driveshaft - Problems-thru-axle-prototype.png
    Last edited by chrisingrassia; 05-04-2015 at 01:49 PM.

  12. #12
    mtbr member
    Reputation:
    Join Date
    Jan 2006
    Posts
    1,737
    Your right, I used to own Hurricane Components,sold in 2003, I designed the Fork Up's, that are labeled under Hurricane, Thule and Yakima, I still own the patent to those.
    While im not trying to get into a"pissing match" with you or anyone else, I dont understand why someone would put the responsibility of "engineering"an adaptor that doesnt rotate up to those who make adaptors, when the responsibility clearly rests in the rack manufacturers designs. All Fork Ups are designed with lawyer tabs to prevent them from pulling out because of user error, they is really nothing else we could do or have done different to prevent them from rotating, when the clamps in the fork mount dont bite down hard enough...maybe make sure your fork is securely fastened into the adaptor, as well as the fork mount
    Btw, I use older Thule Velo Vise mounts and never had a bike rotate in the mount using a ForkUp, enen our 55 lb Ventana tandem

  13. #13
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Hurricane Jeff View Post
    Your right, I used to own Hurricane Components,sold in 2003, I designed the Fork Up's, that are labeled under Hurricane, Thule and Yakima, I still own the patent to those.
    While im not trying to get into a"pissing match" with you or anyone else, I dont understand why someone would put the responsibility of "engineering"an adaptor that doesnt rotate up to those who make adaptors, when the responsibility clearly rests in the rack manufacturers designs. All Fork Ups are designed with lawyer tabs to prevent them from pulling out because of user error, they is really nothing else we could do or have done different to prevent them from rotating, when the clamps in the fork mount dont bite down hard enough...maybe make sure your fork is securely fastened into the adaptor, as well as the fork mount
    Btw, I use older Thule Velo Vise mounts and never had a bike rotate in the mount using a ForkUp, enen our 55 lb Ventana tandem
    I also am not looking to get into a pissing match. But, as the customer of this product, I can give you some real-time feedback.

    HOWEVER, first off, you must realize I'm talking about the RockyMount DriveShaft that I'm frustrated with, not the Thule/Yak/Hurr item. I put the engineering responsibility firmly on Rocky Mounts because THEY make the bike rack I have; Thule makes the roof rack. In the picture I posted above, the green part and the black adaptor at the front are both separate RM products; I see absolutely zero reason why they couldn't engineer/design this pitchfork product to incorporate the adaptor so that it wouldn't rotate. I called RM in October, and you know what they told me? "yeah, this is a known issue. What we'll do is send you a second rear wheel ratchet strap for free." "Uh......OK, thanks." Fail.

    Like I said, my XL frame has no room to run a second strap. The lawyer tabs do nothing but ensure the adaptor doesn't come up OFF of the skewer; that's not the problem we have. Having the thru-axle securely fastened in the fork is also not the problem. I had this skewer handle so tight that it hurt my hand/wrist/arm/shoulder to get it to the lock position. These potential "problem areas" are simply nothing but band aids over the iceberg gash: prevent the adaptor from rotating forward/aft, problem solved.

    Over on PinkBike, I've had numerous messages tell me, "I don't even bother with the adaptors, they don't work. Just go with a full-bike rack and forget taking off the front wheel." As a guy that owns the patent on those adaptors, you should care about what I'm saying here and what other consumers are choosing to do.

    Since I really like the Euro Pitchfork, and the DriveShaft is the only lockable adaptor option, I'm going to think about custom fabricating a platform of some sort that attaches through the skewer hole but has virtually no gap between the platform and the bike rack. Then mount the DriveShaft to the platform using nuts and bolts. Thus, the platform cannot rotate forward/aft due to no gap, and the bike goes nowhere. Basically I'm having to create my own product that RockyMounts already understands the need for with the DriveShaft HM and DriveShaft SD.

    The engineering/design difference is blatantly obvious re: rotation when you look at their product sheet: http://www.rockymounts.com/v/install...haftFamily.pdf

  14. #14
    mtbr member
    Reputation:
    Join Date
    Jan 2006
    Posts
    1,737
    Ok, the statement you made sounded like there are problems with all adapters, I can't speak for Rocky Mounts, but haven't heard of the problems with the Hurricane/ Thule/Yakima adapters.
    As I stated, and as my name suggests, I used to own Hurricane, but I'm not associated with them anymore, other than having the patent in my name. I'm have just started another company called ExoDux, in which we are very close to finishing a truck bed rack that not only has some unique mounts for bikes, but also has mounts for kayaks, surfboards, SUP's, lumber, etc. we just filed the patent for this rack, and when it gets a validated "patent pending" I'll be showing this rack on this site, Bike Rumor, Pinkbike, as well as several event expo's out west.

  15. #15
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    All the rack mfgs should redesign their roof mount tray style fork mount racks to have a single interchangeable axle from QR up thru 15 and 20mm. Seems like they are slow to convert.

  16. #16
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    Quote Originally Posted by Hurricane Jeff View Post
    Your right, I used to own Hurricane Components,sold in 2003, I designed the Fork Up's, that are labeled under Hurricane, Thule and Yakima, I still own the patent to those.
    While im not trying to get into a"pissing match" with you or anyone else, I dont understand why someone would put the responsibility of "engineering"an adaptor that doesnt rotate up to those who make adaptors, when the responsibility clearly rests in the rack manufacturers designs. All Fork Ups are designed with lawyer tabs to prevent them from pulling out because of user error, they is really nothing else we could do or have done different to prevent them from rotating, when the clamps in the fork mount dont bite down hard enough...maybe make sure your fork is securely fastened into the adaptor, as well as the fork mount
    Btw, I use older Thule Velo Vise mounts and never had a bike rotate in the mount using a ForkUp, enen our 55 lb Ventana tandem
    Cool. I am an inventor with several patents too.

    I think the adapter is more to blame than the racks for rotation, since yakima and thule didn't envision the adapter from the beginning. Now they could design something in to key the adapter to the rack as a model update, and that would work.

    But I can envision an adapter version that would have a brace that hugs one or both fork legs.

  17. #17
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    Quote Originally Posted by chrisingrassia View Post
    Certainly a valid point. Since I have an XL frame, I can't lay the adaptor flat back and still ratchet the rear wheel down, it's hanging off the back of the rack then. Conversely, I can't push it all the way forward either because then my brake caliper 6" post mounts interfere with the adaptor. Overall, the DS product just simply doesn't work for me.

    I'm SO incredibly lucky I didn't lose my entire MTB on the freeway yesterday. I won't ever use the DS product again. About ready to sell all my Rocky Mount stuff if I can't devise a better solution.

    Honestly RockyMounts, is it really so hard to produce something like this......from your OWN products that already exist.....
    Click image for larger version. 

Name:	Thru-Axle prototype.png 
Views:	125 
Size:	228.2 KB 
ID:	985992
    That is too bad an XL frame will drop the rear wheel off the tray... I'm luck with my medium, I can still strap it to the tray.

  18. #18
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Chad_M View Post
    That is too bad an XL frame will drop the rear wheel off the tray... I'm luck with my medium, I can still strap it to the tray.
    Yep. I used to actually be able to lay the adaptor all the way forward until it rested on that black nose piece. But that was with a 180mm fork with 8" post mounts. I've since gone to 160mm with 6" post mounts which cause my brake caliper to interfere if I lay it forward. Overall, the adaptors just won't work with my setup any longer.

    Hurricane - I'm very interested to hear why your idea doesn't rotate at all, while the Rocky Mount one I can't get to stop rotating forward *or* aft. ....

    Chad's idea may work, keying the adaptor and skewer. But I'm trying to visualize it in my head and still don't see how it would prevent rotation. Unless the rack, adaptor, and skewer ALL were keyed....

  19. #19
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    I would key the adapter to the rack, not the skewer. But if the companies are redesigning the racks, they might as well make the axles universal and get ride of the adapters all together.

  20. #20
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Chad_M View Post
    I would key the adapter to the rack, not the skewer. But if the companies are redesigning the racks, they might as well make the axles universal and get ride of the adapters all together.
    OK, yes, I see your point. Keying those two would make sense. I still think that two products that are supposed to hold a $4000+ bike (or bikes) which rely merely on pressure contact that has to survive intense headwind and constant vibration and bouncing is bad engineering. IMO. It's gotta be designed somehow to not rotate.

  21. #21
    mtbr member
    Reputation:
    Join Date
    Jan 2006
    Posts
    1,737
    With the current evolution of axle standards, now 15mm x 110mm, 15mm x 150mm and possibly a road 12 mm x 100mm, fork adaptors will be around for awhile.
    When I first designed the Fork Ups back in 1996, there was pretty much 2 choices, 9mm x100 or 20mm x 110, in which did not fit onto any rack.Back in the day, we had Fork Up models to fit everything from the Cannondale Lefty to a Foes 30mm x 110mm forks.
    Its funny now how rack manufacturers are starting to catch up, but the beauty of using a Fork Up is, you can use any 9mm rack, but use a Fork Up to accomadate most forks.
    My truck rack, that will soon be introduced, will have a very unique mount that has never been used, as well as fork mounts with interchangeable axle mounts that are basically future proof, meaning regardless of what axle standard may come along we'll have a mount to fit that fork.

  22. #22
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Folks!!! Over on PB, a member showed me a setup of exactly what I'm looking for. It's called the Inno INA392. It's certainly not the cleanest or sleekest style, but is precisely what those of us could use for a roof rack with thru-axle. The price point looks good, I may give it a shot. I'll try to call them first to see if my XL frame wheelbase will fit it.

    Hurricane Jeff - this thread has nothing to do with truck racks.

  23. #23
    mtbr member
    Reputation: Chad_M's Avatar
    Join Date
    Jul 2013
    Posts
    196
    Inno makes some nice stuff. In my opinion, they are coming out with some better stuff than Yak or Thule lately.

    The multiple fittings for QR, 15 and 20mm TA are exactly like I was thinking all the makers would do soon.

    Watching the video, I don't like the strap system to go from the tray to to the crossbars, but maybe it works well in person.

  24. #24
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Quote Originally Posted by Chad_M View Post
    Inno makes some nice stuff. In my opinion, they are coming out with some better stuff than Yak or Thule lately.

    The multiple fittings for QR, 15 and 20mm TA are exactly like I was thinking all the makers would do soon.

    Watching the video, I don't like the strap system to go from the tray to to the crossbars, but maybe it works well in person.
    I had to re-watch that part as well. It actually works the same way as the RockyMount TieRod (which I had before the Euro Pitchfork). It's basically a rubber strap with a T-flap that tucks into a metal holder. Tightening the knob tightens the strap.

    I just get worried about the longevity/durability of those straps over time.....will they get weathered or brittle and snap during a drive?

    I also called INNO, and they told me the rack, from fork mount to rear wheel cradle , is 53 inches. Thus, it should fit an XL frame easily.

  25. #25
    mtbr member
    Reputation:
    Join Date
    Aug 2012
    Posts
    327
    Then again, I just had a Live Chat with AutoAnything (who sells the INNO rack) and they said it ONLY works with round or square bars. So sounds like it won't work with my Thule Aerobars....

    Ugh, back to square one of custom-fab bracket.

    *edit*: and then I just called INNO right now direct and they said "absolutely it will fit the Aero bars no problem...we have a guy here that runs that exact setup."

    Getting factual answers to questions is so hard nowadays......I wish all companies would just go consumer direct and cut out these incompetent middlemen....

Page 1 of 2 1 2 LastLast

Similar Threads

  1. Rockymounts
    By laherna in forum Where are the Best Deals?
    Replies: 1
    Last Post: 08-27-2012, 08:39 PM
  2. yakima frontloader or rockymounts pitchfork? ('08 WRX)
    By bignick73 in forum Car & Biker
    Replies: 15
    Last Post: 07-02-2012, 11:33 AM
  3. Rockymounts Pitchfork vs. Sprocket Rocket
    By igere in forum Car & Biker
    Replies: 2
    Last Post: 05-15-2012, 08:26 AM
  4. Fat RockyMounts Tray
    By bdundee in forum Fat bikes
    Replies: 5
    Last Post: 10-22-2011, 08:57 PM
  5. Rocky Mounts Driveshaft thoughts/reviews?
    By ktaylor15 in forum Car & Biker
    Replies: 3
    Last Post: 07-24-2011, 10:32 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •