Hyperpro Fork Springs

Discussion in 'Parallel Universe' started by LaPorte, Jun 2, 2010.

  1. LaPorte

    LaPorte Been here awhile

    Joined:
    Jul 3, 2006
    Oddometer:
    566
    Location:
    Northern Ca.
    I have ordered a set of Hyperpro fork springs for my F800 GS. So today I was looking to see what tools I need to change the springs. Looks like the front brake calipers have Torx bolts which will require female Torx sockets to remove them. Anyone know what size the female socket is, E-what ?

    Thanks

    LaPorte
    #1
  2. Pomo

    Pomo gonzo

    Joined:
    Apr 14, 2009
    Oddometer:
    612
    Location:
    El Desierto, NM
    There are only 3 sizes used on the bike IIRC. E8 (shift lever bolt), E10 (handlebar clamps), and E12 (brake calipers). I may be wrong but if that's the case I'm sure I'll be corrected. :D

    The ghetto fabulous way (which I have used a few times) is to just use an adjustable wrench on them. If you're careful you won't do too much damage to the bolts, but obviously that's not an ideal solution.
    #2
  3. gr8ridn

    gr8ridn Been here awhile

    Joined:
    Jun 13, 2009
    Oddometer:
    477
    Location:
    Kern River Valley, CA
    Get the proper socket. The re-tightening torque for the calipers is CRITICAL. Too loose the bolts will loosen and fall off. Too tight will damage the mount threads and fastener. The Torque for the front caliper bolts is 38 NM (28 Ft/lb) dry and clean. You won't be able to do this with an adjustable wrench.

    For something this important I suggest using the correct tools or have someone do this for you. You really don't want to cause problems with the brakes:eek1
    #3
  4. Nictrolis

    Nictrolis Been here awhile

    Joined:
    May 26, 2010
    Oddometer:
    209
    Location:
    Dedham, MA
    #4
  5. zaner32

    zaner32 In over my head

    Joined:
    Jan 28, 2007
    Oddometer:
    683
    Location:
    Moncton
    Proper size torx is E-12.

    Axle torque 30Nm
    Axle pinch bolts torque 19Nm
    #5
  6. The Griz

    The Griz Long timer

    Joined:
    Nov 26, 2008
    Oddometer:
    3,851
    Location:
    Minnesota
    Yup.

    Front Axle Bolt: 30Nm
    Front Brake Caliper Bolts: 38Nm
    Plastic Fork Guards/Fender Bolts: 4Nm
    Top & Bottom Triple Tree Clamp Bolts: 19Nm
    Fork Tube Covers: 20Nm
    Damping Rod Locknut to Fork Tube Cover: 20Nm

    No thread locker anywhere. Only clean and dry threads.:deal
    #6
  7. The Griz

    The Griz Long timer

    Joined:
    Nov 26, 2008
    Oddometer:
    3,851
    Location:
    Minnesota
    #7
  8. LaPorte

    LaPorte Been here awhile

    Joined:
    Jul 3, 2006
    Oddometer:
    566
    Location:
    Northern Ca.
    Thank you all for the information. I got the answer to my question ++++++++++++++++.

    LaPorte
    #8
  9. The Griz

    The Griz Long timer

    Joined:
    Nov 26, 2008
    Oddometer:
    3,851
    Location:
    Minnesota
    #9
  10. HMarc

    HMarc Hoseur

    Joined:
    Oct 18, 2003
    Oddometer:
    264
    Location:
    Spokane, WA, USA
    An 8mm socket works well on the E10 handlebar bolts.

    But my solution (which I also did on my R12GS) was to replace the E-Torx bolts with Allen-head bolts. Well, the shifter and handlebar bolts anyway, for the brake calipers I used conventional bolts (17mm heads, in my case). That makes my tool roll smaller as I already need the Allen head sockets and the 17mm wrench.
    #10
  11. tmex

    tmex Long timer

    Joined:
    Apr 20, 2006
    Oddometer:
    2,039
    Location:
    NorCal
    While it is true that the front caliper bolts require a female torx socket to remove, you do not need to remove the calipers to change the fork springs.

    BTW, you should stop being a cheap bastard and buy a whole set of torx sockets.
    #11
  12. LaPorte

    LaPorte Been here awhile

    Joined:
    Jul 3, 2006
    Oddometer:
    566
    Location:
    Northern Ca.
    tmex
    Cheap bastard, cheap bastard how can you say that, I just wanted to borrow the E-12 socket for a few minutes. I was going to give it back just as soon as I was done with it. Hell if you want, you can borrow my Kragen 6", fully adjustable wench any time you want. I even have a piece of pipe to slip on the handle to get more leverage for those tight suckers.

    LaPorte :rofl
    #12
  13. v8toilet

    v8toilet Nothing to see here.

    Joined:
    Jul 11, 2005
    Oddometer:
    1,738
    Location:
    Northwest U.S.
    :rofl:rofl:rofl
    #13
  14. Nictrolis

    Nictrolis Been here awhile

    Joined:
    May 26, 2010
    Oddometer:
    209
    Location:
    Dedham, MA
    Fully adjustable wenches are surely the best! :thumb
    #14
  15. M N B

    M N B would rather be riding

    Joined:
    Nov 26, 2008
    Oddometer:
    1,259
    Location:
    San Jose, CA
    Hey LaPorte, I'd love to try out your 800 once you get the springs in to compare the difference. What weight springs did you get? (stockers are .44 I think)
    #15
  16. tmex

    tmex Long timer

    Joined:
    Apr 20, 2006
    Oddometer:
    2,039
    Location:
    NorCal
    I called Phildirt to tell him about this thread. Caught him on I5 driving to Modesto. He almost drove off the road he was laughing so hard. I think the Yota dog saved it.
    #16
  17. LaPorte

    LaPorte Been here awhile

    Joined:
    Jul 3, 2006
    Oddometer:
    566
    Location:
    Northern Ca.
    M N B

    I got the Hyperpro 25mm lowering Kit, SP BM08-SSC018. The fork and shock springs are the Rising Rate Springs, so I don't know the spring rate. I was told it varies as the spring compresses. The more compression the higher the spring rate. Still waiting for the shock spring to get here. I needed to get the bike a little bit lower so I can better reach the ground. So this was to lower the bike and get a better springs than stock. I put in the new fork springs today. I can see the bike is a little lower in the front with the stock shock spring. After I get the new shock spring in I will do a test ride and see how the new suspension works.

    LaPorte
    #17