Ducati rear shock rebuild. Suspension service for the 749 Project. Sachs Ohlins K-tech

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  • เผยแพร่เมื่อ 16 ธ.ค. 2022
  • The rear shock on the 749 project bike is looking a bit sorry for itself, so Dave decides to improve it, but in a bid to save some pennies he buys a cheap replacement on ebay, that doesn't turn out so well!
    Join Dave as he strips and rebuilds the shock and explains how the magic happens inside
    obsessionengineering.co.uk/
    Carbon tool trays available from www.jollyscarbon.co.uk/public...
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ความคิดเห็น • 69

  • @derekholme6922
    @derekholme6922 ปีที่แล้ว +6

    First class job with more info than I thought required to service a shock.

  • @nickrider5220
    @nickrider5220 ปีที่แล้ว +4

    If Dave does your work, you know it'll be done absolutely right - OCD has it's merits !

  • @VoldHooker
    @VoldHooker ปีที่แล้ว +5

    That was a great description. Now I understand how the shims work, thanks Dave.

  • @Oilyhands749
    @Oilyhands749 ปีที่แล้ว +3

    Sunday morning, tea n toast with a shock rebuild.
    What could be better when it’s -1 outside.
    Top job Dave.

  • @RemboUSMC
    @RemboUSMC ปีที่แล้ว +2

    This is one of the best videos I have watched in the last full year. Thank you.

  • @davidsampson3537
    @davidsampson3537 ปีที่แล้ว +9

    I just dont understand how you dont have more subscribers

    • @Vtwin_Superbikes
      @Vtwin_Superbikes ปีที่แล้ว +4

      It’s just the bleak nature of the algorithm. You have to play the game and jump through heaps of uploading loops to get shown more in searches. I agree though, Daves channel is top notch!

    • @Bow-to-the-absurd
      @Bow-to-the-absurd ปีที่แล้ว +1

      Its a niche market

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +2

      Thanks for the positive feedback 😁
      Maybe not everyone is as interested in quality 😂

  • @beer77monster
    @beer77monster ปีที่แล้ว +2

    Love watching these videos Dave…

  • @MikeHarveyPhoto
    @MikeHarveyPhoto ปีที่แล้ว +1

    Thanks for that made ,did not know how little that adj had on the shock thought both did a full job ,keep them coming

  • @stevesanelli90
    @stevesanelli90 ปีที่แล้ว +3

    Always an excellent explanation of suspension functions! Dave the master shocks man! Rear setup looks brand new 🤙

  • @Daft_Mart
    @Daft_Mart ปีที่แล้ว +2

    Very well explained young man. it's interesting how the inside of suspension actually works.

  • @adrianoarchie2712
    @adrianoarchie2712 ปีที่แล้ว +1

    Brilliant video thanks so much I gotta service my rear shock mv agusta f4 1000

  • @Shinysideup
    @Shinysideup ปีที่แล้ว +3

    Interesting stuff Dave nice quality job

  • @LeTessier916
    @LeTessier916 ปีที่แล้ว +1

    Awesome tutorial thanks Dave

  • @rickardcarlsson4525
    @rickardcarlsson4525 ปีที่แล้ว

    Great video, superb explaining!

  • @Vtwin_Superbikes
    @Vtwin_Superbikes ปีที่แล้ว +2

    Great video, Dave. 🫡

  • @troywee4774
    @troywee4774 ปีที่แล้ว +1

    thanks for that - nice result mate! cheers.

  • @TwoDavesRacing
    @TwoDavesRacing ปีที่แล้ว

    Superb work Dave 👌

  • @stephenmcqueen4029
    @stephenmcqueen4029 ปีที่แล้ว +1

    Nice one Dave,

  • @davidherringgo
    @davidherringgo ปีที่แล้ว +1

    Nice rebuild. Helps me to understand adjustment now on my Dukes Ohlens rear . Thanks

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว

      If it's a later ttx Ohlins the adjustment will be completely separate, but the pre 46mm shocks all work like this

  • @stewarthaddon3219
    @stewarthaddon3219 ปีที่แล้ว +2

    The supposedly "unservicable" Sachs shock! Nice one Dave. P.s..why nitrogen and not good old free air? Best tutorial I've ever watched on the workings and repair of a shock..cheers.

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +2

      Only because its dry, same reason high end race tyres use nitrogen, no moisture to alter pressure at temperature.
      Dried air would work just as well

  • @Damien_In_Hawaii
    @Damien_In_Hawaii ปีที่แล้ว

    How informative man great job

  • @stephenbeamis1151
    @stephenbeamis1151 ปีที่แล้ว +1

    Do like the suspension rebuilds slowly the mist is clearing and suspension set up makes more sense

  • @theralphster8492
    @theralphster8492 ปีที่แล้ว

    Great explanation and a job well done....double helpings of sticky toffee pudding for you Dave...

  • @brianhaygood183
    @brianhaygood183 10 หลายเดือนก่อน +2

    It sounds like Mr. Bean has been practicing talking for the past twenty years and is almost sounding normal.

  • @gerrycollins7079
    @gerrycollins7079 ปีที่แล้ว +1

    It's impressive how mechanical engineers and fluid dynamicists have developed and refined these systems. I suppose when everything goes electronic, the engineering will change substantially.

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +1

      We'll still need nuts and bolts to hold the sparks in though. Or at least I hope we will!

  • @evo5349
    @evo5349 ปีที่แล้ว

    It's great that we can pull our shaft up and down and in and out Dave, oh life would be so boring 😁

  • @Dave326121
    @Dave326121 ปีที่แล้ว +2

    Well explained Dave, you make it almost so I could understand lol
    Can't wait to see the finished bike...... might even be tempted to buy it off I can convince the wife. That said, better to ask for forgiveness than ask for permission 🤣🤣

  • @theberengersniper
    @theberengersniper ปีที่แล้ว

    Compressing springs gives me the heebie jeebies big time. I know yours is how a lot of spring compressors are, but I'd like to see a strong mesh cage between you and that 'bomb'.

  • @ianmills1120
    @ianmills1120 ปีที่แล้ว

    Fascinating

  • @paulwilkinson6608
    @paulwilkinson6608 ปีที่แล้ว

    Very good indepth video

  • @daveprototype6079
    @daveprototype6079 ปีที่แล้ว

    Great work
    New subscriber
    Cheers

  • @danielstafford7255
    @danielstafford7255 ปีที่แล้ว +1

    Woohooo been waiting for another vid

  • @stuwhite1969
    @stuwhite1969 ปีที่แล้ว +1

    Nice

  • @flamintasty
    @flamintasty ปีที่แล้ว +2

    Dave, buy more bikes and start more projects 👍

  • @cecilwilson5442
    @cecilwilson5442 ปีที่แล้ว

    When I advertised the shocks I have sold and bought they are pictured from all sides,, but it's good shocks and low mileage,, only out because I bought an ohlins,,😞not good when it's intercepted on arrival,, but such is life ☘️☘️ from northern Ireland 😁

  • @nobbytrussin
    @nobbytrussin 9 หลายเดือนก่อน +1

    Great info. If one were so inclined, could you increase the stroke of the shock to allow more wheel travel? Is there a spacer that sits in the seal head?

    • @obsession_engineering
      @obsession_engineering  9 หลายเดือนก่อน

      I can't actually remember on the ducati shock. Spacers are common on many road shocks, but usually there for a reason!

  • @00Munki
    @00Munki ปีที่แล้ว

    Love these videos. Proper geekfest, more in depth the better! What happened to the VFR boat?

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +1

      Recently mot'd and taxed, v5 took an age to sort. Road test when the weather plays ball

    • @00Munki
      @00Munki ปีที่แล้ว

      @@obsession_engineering Good to hear is nearly ready. Lucky boy, I always wanted one, my 6 foot 2 frame didn't! Be interesting to see you ride it.

  • @zlatomirkolev9762
    @zlatomirkolev9762 8 หลายเดือนก่อน

    Hello, mate can i ask you about your spring press.What is the size of the spring hole plate? Total length of the compressor?

  • @GenObGuderian
    @GenObGuderian ปีที่แล้ว +1

    Hey, great Video, I´m doing the same to my Sachs shock at the moment, but how did you remove the Aluminium cap from the oil-reservoir and the ring from the cap of the gas-reservoir???

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +1

      I use a small punch and hammer to gently persuade the oil side cap off, and knocking the gas side head down allows room to flick the circlip out

    • @GenObGuderian
      @GenObGuderian ปีที่แล้ว

      @@obsession_engineering Thanks for the tip, its now in parts 🤘
      One more question, how much Oil and pressure did you fill in at least?

  • @benjaminberglihn6903
    @benjaminberglihn6903 ปีที่แล้ว +2

    Hi Dave, may I inquire as to where you procured the charge head?

  • @motorcyclegarage2307
    @motorcyclegarage2307 ปีที่แล้ว +1

    Hi Dave, Is it possible to fully service a ST2 rear shock ? Cheers Rich

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +1

      Seal kits are available but some sachs shocks need modifying to allow re-gassing. The mid needed I'm not a fan of as it can add a weak point for gas leakage.
      If it has a remote res fir the gas it's much simpler and can be done no problem!

    • @motorcyclegarage2307
      @motorcyclegarage2307 ปีที่แล้ว

      @@obsession_engineering Thanks Dave, it has a remote gas canister. Are you at the Manx GP this year ?

  • @robewelds7414
    @robewelds7414 5 หลายเดือนก่อน +1

    Hi,
    I am Robert from Uganda. One of my ohlins rare shock started leaking. How can I get them to you for servicing?

    • @obsession_engineering
      @obsession_engineering  5 หลายเดือนก่อน

      No idea what shipping is available from Uganda. If DHL, ups or similar operate I'm sure they could get it to me. Drop me a message on the contact form if necessary
      Obsessionengineering.co.uk

  • @DmitrySerbin
    @DmitrySerbin ปีที่แล้ว

    Do you know how to rebuild shock from versys 650 2007? It seems to be unserviceable.

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว +1

      The short answer unfortunately is they can't be rebuilt. they're manufactured to a low cost and welded together. Replacement is the only real option, but a good chance to upgrade!

    • @DmitrySerbin
      @DmitrySerbin ปีที่แล้ว

      @@obsession_engineering thanks. Forums say R1 shock is a good for replacement. Maybe some day.

  • @magnusedwards5661
    @magnusedwards5661 ปีที่แล้ว

    Dave, were you in Aberdeen today ? Was sure it was you but didn’t like to say hello as I wasn’t 100% if it was, bit too far north for you id imagine, bleeding nose and altitude sickness i imagine

    • @obsession_engineering
      @obsession_engineering  ปีที่แล้ว

      I actually was! Been offshore doing a gearbox change on a gas turbine.

    • @magnusedwards5661
      @magnusedwards5661 ปีที่แล้ว

      @@obsession_engineering i thought it was you, i work off shore as well but in slightly better climates but worked North Sea for many years. Keep up the great and very entertaining vids

  • @carlosoruna7174
    @carlosoruna7174 ปีที่แล้ว

    Ahh rebuilding a non designed to be rebuilt shock nice.

  • @yianniagpr
    @yianniagpr ปีที่แล้ว

    BS.....