Whats the best way to stiffen up a QR fork?

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  • Whats the best way to stiffen up a QR fork?
  • MoseyMTB
    Member

    I know the answer is probably buy the maxle

    Can the hub (hope pro 2) be converted to run one of the DT Swiss or Superstar axles?

    Cheers

    Sam
    Member

    Yes, You can just drill them out or I think they may even make end caps for 9mm QR’s.

    Premier Icon fathomer
    Subscriber

    I think this is what you need? I came across them when looking if I could do XC hubs.

    http://www.jejamescycles.co.uk/hope-pro-2-item170909.html#info

    MoseyMTB
    Member

    Ah cheers and then just a 9mm thru axle from superstar right?

    Is that all? Seems too simple.

    Premier Icon fathomer
    Subscriber

    If you look on this page, pretty sure it’s the HUB443 you need:
    http://www.hopetech.com/page.aspx?itemID=SPG280

    Which according to the description on this site is the conversion to take DT Swiss RWS 9mm skewer (or superstar jobbie), so the first link maybe wrong.
    http://www.ukbikestore.co.uk/product/176/hub443/hope-pro-2-front-9mm-thru-bolt-conversion-kit.html

    Premier Icon porter_jamie
    Subscriber

    yes, did it to my rebas, makes a noticeable difference. adds a little bit of weight too though.

    i used the superstar one as is it a load cheaper than a dt one

    MoseyMTB
    Member

    Cheers guys I’ll go order both.

    Thanks alot

    Can someone explain this upgrade works to improve (torsional) stiffness. (I’m really dumb at mechanical things sorry)?

    I can see that you can squeeze the nut tighter against the fork jaws with a screw/track-nut rather than a QR lever and skewer which seems helpful. But the interface between the axle and fork jaws is unchanged. Is it something to do with a solid axle bending a tiny bit less bendy than a hollow axle – does solid really make much difference given that a hollow tube is very stiff anyway?

    Premier Icon glenh
    Subscriber

    Lose some weight 😉

    Sam
    Member

    buzz-lightyear – Member
    Can someone explain this upgrade works to improve (torsional) stiffness. (I’m really dumb at mechanical things sorry)?

    I can see that you can squeeze the nut tighter against the fork jaws with a screw/track-nut rather than a QR lever and skewer which seems helpful. But the interface between the axle and fork jaws is unchanged. Is it something to do with a solid axle bending a tiny bit less bendy than a hollow axle – does solid really make much difference given that a hollow tube is very stiff anyway?

    The clamping force is higher and the elasticity of the skewer is lower.

    toys19
    Member

    The clamping force is higher and the elasticity of the skewer is lower.

    Que?

    Premier Icon iainc
    Subscriber

    I have a DT swiss and the superstar one. The DT one is noticeably ‘stiffer’ when riding

    steve_b77
    Member

    Instead of buying the 9mm adapters, I have a set of 15mm ones, coudl I just not get some 15mm tube with an ID of 9mm and slip that in place over the axle?

    Or am I just over complicating things?

    Premier Icon Matt24k
    Subscriber

    How’s that going interesting 15mm conversion going to fit into your QR fork lowers?

    Premier Icon Paceman
    Subscriber

    What’s the weight difference between the DT Swiss and Superstar versions?

    steve_b77
    Member

    Matt – good point, never thought of that 😳

    scruff
    Member

    Paceman, the difference is quality.

    steve_b77
    Member

    Aren’t the DT ones renowned for snapping?

    Premier Icon Paceman
    Subscriber

    I’m going to go with a DT 9mm RWS Axle I think.

    Premier Icon MSP
    Subscriber

    Aren’t the DT ones renowned for snapping?

    The early ones had a plastic ratchet that just wasn’t up to the job, that’s meant to have been sorted on later ones. The DT ones are lighter than the superstar ones, but you would have to be pretty weight obsessed to justify the cost differential between them.

    pickle
    Member

    is it really that much of a problem? never felt the need myself, normal QR has worked well enough for me over the last *cough* years 😀

    Premier Icon Paceman
    Subscriber

    It’s definitely not a problem for me, I just fancy trying some out to see if it makes a difference.

    rwc03
    Member

    If you get the dt rws skewer make sure it looks likes this:

    http://www.dtswiss.com/Products/Components/RWS/RWS-thru-bolt.aspx

    The others have plastic handles which in my experience last for 5 minutes. I’m using the superstar ones for now, as I didn’t get on with the plastic levers. The superstar ones are noticeably heavier (the dt swiss ones are very light) but they feel absolutely solid in the hand, they come with an OE QR lever which is why they’re much cheaper in comparison. To be honest I can’t tell much difference between the dt swiss ones and the superstar but maybe that’s because I only got to use the dt ones for a couple of rides before the plastic burred.

    EDIT: Don’t buy this version from crc:

    http://www.chainreactioncycles.com/Models.aspx?ModelID=21670&utm_source=Google&utm_medium=Shopping&utm_name=UnitedKingdom

    Premier Icon Paceman
    Subscriber

    Got an unused DT RWS 9mm Skewer for next to nothing off a riding buddy, it’s the older version but worth a punt I think, just need some Hope Pro 3 9mm convertors now.

    Premier Icon kimbers
    Subscriber

    i have a superstar one on the front and it works well with my floats, i found a big improvementover regular qr on rock gardens and awkward landings

    rob jackson
    Member

    what did you notice before and after – intrigued. Or is it down to perception – i have bought ergo its better?

    I am not sure on an awkward landing that you are thing “ooooh the torsional stiffness is a real improvement here”, more like “**** me this is gonna hurt!”

    Premier Icon kimbers
    Subscriber

    maybe its all in my head they just feel stiffer when im riding hard, or if i land at an angle

    Premier Icon Paceman
    Subscriber

    If it feels better in your head then you’ll ride better that’s for sure. Sometimes a percieved improvement in your bike is enough to give you the confidence you need.

    Premier Icon iainc
    Subscriber

    It’s the older DT Swiss one I have – as long as you keep it greased and clean the plastic covering on the lever is fine (I think it’s metal underneath ?). Can you tell the difference ? yes – on slow rocky descents I can, so it was a worthwhile upgrade to 140mm QR forks. Have not bothered changing on my 100mm Reba’s on the hardtail as I don’t think I would notice on that

    Sam
    Member

    toys19 – Member
    The clamping force is higher and the elasticity of the skewer is lower.
    Que?

    The force exerted on the dropout is higher because the skewer is tightened on a thread than the cam of a normal QR. Because the skewer is less elastic when there are forces acting on the fork which make the dropouts want to move independently of one another the skewer stretches less and allows them to move less.

    cruzheckler – Member
    what did you notice before and after – intrigued. Or is it down to perception – i have bought ergo its better?

    I am not sure on an awkward landing that you are thing “ooooh the torsional stiffness is a real improvement here”, more like “**** me this is gonna hurt!”

    IMO the advantage is rather in general steering precision rather than reaction to an awkward landing.

    Premier Icon FOG
    Subscriber

    Can you do this with XT QR hubs which I have on both my bikes?

    Premier Icon Paceman
    Subscriber

    Can you do this with XT QR hubs which I have on both my bikes?

    If the hubs can be converted to 9mm bolt thru.

    sugdenr
    Member

    Can you do this with XT QR hubs which I have on both my bikes?

    No. Because of the cup and cone bearing design they are axle size specific.

    Premier Icon Andy
    Subscriber

    I have some 9mm ProII adaptors if anyone needs them 😀

    Premier Icon Paceman
    Subscriber

    Andy, how much do you want for them?

    Premier Icon Andy
    Subscriber

    Nath yhm

    EDIT: These are Pro2s, Paceman needs Pro3s so if anyone else needs them please pm me

    neninja
    Member

    Front adapters are the same for Pro2 and Pro3

    I think the best way is to swap your lowers for 15 or 20mm thru axle versions 😉

    Premier Icon Paceman
    Subscriber

    Front adapters are the same for Pro2 and Pro3

    Are you certain, they’re different part numbers on the Hope website?

    Premier Icon gamo
    Subscriber

    My brother did the Hope/Superstar conversion and feels its improved
    the steering/stiffness of his Float 140’s.

Viewing 40 posts - 1 through 40 (of 44 total)

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