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Melting spurs and stripping clutch bells

Discussion in 'Chassis & Drivetrain' started by M4tty69, May 14, 2018.

  1. M4tty69

    M4tty69 Member

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    hi all,

    Sorry if this has already been covered in another thread but I had a little search and couldn’t find an answer..

    I have two problems here. Firstly I shall say that my savage x 4.6 is only used for bashing and it takes quite a beating so I expect to break things but this is getting a bit silly now.

    When running stock HPI plastic spur gear and heavy duty clutch bell after a while I end up with a spur gear like this! All shredded and almost looks melted?!

    I then switched to a hpi steel spur gear with the same heavy duty clutch bell and it just strips the clutch bells! At £15 a pop I don’t really want to be using a clutch Bell every time I go out, sometimes it’s only lasting 30mins before it’s stripped again!

    I don’t think it’s down to the mesh being wrong as I always spend the time to get that perfect mesh.

    I have thought maybe the engine is moving when landing hard and rolling ect but the spur and clutch bell seem to strip sometimes when I haven’t even jumped it yet?!

    Over to you guys!
    Am I using the correct gears? Is there anything that better? Is there a way to stabilise the engine for bashing?

    Thanks in advance!
     

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  2. Jam Racing 1

    Jam Racing 1 NPTB Monitor, Master of the known universe....
    HPISF Staff

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  3. M4tty69

    M4tty69 Member

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    Awesome, thanks!

    Have a set on order now :)
     
  4. olds97_lss

    olds97_lss Well-Known Member

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    The plastic one looks like your mesh was way too loose. What brand "heavy duty" clutch bell were you using with the steel spur?

    I use HPI's HD bells with the HPI steel spur and it holds up fine for a very long time. I used to only buy OFNA hardened bells, they would last forever, but you can't find them much anymore.
     

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