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mrsmackpaul

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Posts posted by mrsmackpaul

  1. Okay, well there is always good news

     

    Should be able to get the crank built up and reground

    Or maybe get one from the middle east, plenty of Mack stuff there, however the cranks are probably badly worn as well

    So I would get it built up and re ground, it will be like a brand new crank then

    I reckon this would be cheaper getting a crank out there

     

    Paul

    • Like 1
  2. It sounds t like the rack isn't shifting far enough

    I would expect if the intercooler had a air leak it would be making lots of smoke underload

    I would be looking for something obvious like the injector pump isn't getting pushed around far enough when the foots to the floor 

    It sounds like something is preventing this from happening 

     

    Paul

     

  3. The other thing to consider is bump steer 

    So the link between your pitman arm on the steering boxes and arm I circled kin the redish orange colour in the top photo needs to be level when the truck is at ride height 

    If it isn't, when you drive through a hole or dip on the road the truck will wander across the road height difference is lengthened and shortened 

    Bump steer is pretty important, probably more important than Ackerman as Ackerman only effects the steering on tight turns and has no effect when cruising along down the highway 

    Bump steer has a big effect at speed

    Caster angle is easily corrected with wedges on leaf springs, so it's no big drama 

     

    Paul 

    • Like 1
  4. I gather this arm is the one your talking about

    20250628_131412.jpg.e783897c5454e70f79017e2b84a7b069.jpg

    I don't think these can be switched from side to side, the key ways will be all wrong amd ass about 

     

     

    And this bit is upside down ?

    Is this correct

    20250628_133210.jpg.0ddf39118ee71702d9067e03d6007f55.jpg

    As far as Ackerman angles and how important it is, well it wont effect you much when your driving add speed, only when really turning sharp, the tyres will try and peel off the rims if wheel base is vastly different 

    Good news is, these two arms have effect on the Ackerman angle, wrong arms for that

     

    The two short arms with the blue arrows are the two that effect Ackerman angle

    20250628_135135.jpg.795ca8270a248394e7d98f3cea4945a5.jpg

     

    Paul

    • Like 2
  5. Wont tjis br only accurate to the width of the magnetic strip ?

    I don't know anything about this at all, but from what I can see above it reads off a bit of magnet that must stuck onto the crank by the looks 

    So I'm thinking it must read as the magnet passes, the longer the magnet it is the less accurate the spot is ? Would this be correct ?

    Also if this is correct, the bigger the diameter the magnet is stuck to the more accurate it will be ?

    So I'm thinking the flywheel may be the spot to measure from 

     

    Paul

     

  6. Hand throttles in Jap trucks are like that 

    My Mack uses a the same style as the stop cable, it holds any speed I push it to and within 100 rpm

    And idle I think is around 600,  might be 650

    I was readimg tonight that parts of the U.S. are struggling to get hay and the like done this year, the rain just want bugger off for long enough to get it done 

     

    Paul

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