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Drive Shaft Rev Matching

Discussion in 'V7/V85/V9 Chat & Tech' started by Mitch Clyman, Aug 17, 2018.

  1. TheDarkLord

    TheDarkLord Just got it firing!

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    On a similar vein, I used to up and down shift on my 2003 EV without the clutch, well 3, 4 & 5th anyway. I do this now on my Carbon Dark with no problems, obviously you need to get the revs right :). Anybody know if the V7's gearbox is okay with this?
     
  2. Trout

    Trout GT Reference

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    Years ago "Rev Matching" was called "Double Clutching"

    Before syncro's were commonly used in transmissions shifting a truck trans without "double clutching" would cause big gear grind noise.
     
    TimmyTheHog likes this.
  3. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    I worked a B61 Mack with a 5 and 4 (20 speeds). Only used the clutch when starting and stopping. Even double clutching she wouldn't shift easily. Didn't do any harm.
     
  4. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    Huh thought double clutching is different, but ya, without it, the big rigs would complain...LOL...

    Had to learn that when moving the trucks around when I was doing my Heavy Duty Apprenticeship...:p
     
  5. Trout

    Trout GT Reference

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    Different technique but same basic idea trying to get everything to play well together.
     
  6. Dinsdale Piranha

    Dinsdale Piranha Cruisin' Guzzisti GT Contributor

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    Double declutching is clearly not possible on a bike as there is no neutral between each gear. I've driven Road Ranger 18 speeds (Eaton Fuller) for years. Only beginners use the clutch at all, except taking off from a stand-stil or coming to a complete stop. It's only possible because you passing through neutral for each change.
     
  7. Trout

    Trout GT Reference

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    And read my post #25 just before your post.

    I learned to drive on a 1948 Chevy Dump Truck at 11 (yes eleven) years old.
    Legs were not strong enough or long enough to push in the clutch so granpa bolted a 4x4 block of wood to both the clutch & brake pedals.
    That solved length but strength was lacking so i used to hold onto the bottom of the steering wheel & slip off the seat, brace my back against the seat & use both legs to push in the clutch.
    Once in gear I let the clutch return spring push me back up.
    I would kneel on the seat so I could look over the steering wheel.
    Back then trucks & some cars had hand throttles.
     

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