Speed at what revs?

Discussion in 'Mech Tech' started by Robert Thomas, May 18, 2016.

  1. I have speedo and gps proof of 100mph aaaarrrrgggghhhh
     
  2. Zed

    Zed Gradually getting grumpier

    So what are you asking Robert? Or why, as you seem to know all the answers already.
     
  3. I was asking if I'm killing my engine cruising at 70 as I've no idea what rpm it's doing. I wasn't aware it had a rev limiter either. I take it it's within the distributor?
    I've had the bus 5 years and since struggling for 4 of them docking around trying to set it up I had it RR tuned since then the drivability changed allowing 70 cruise. I see comments of 50-55 being banded around and it got me concerned as to wether I'm slaughtering it.
    You guys are far more experienced so I asked.
    The 100 mph was a one off never to be repeated moment of silliness that I duly punched myself in the face for as a penance
     
  4. Buzzcocks are active again so he is probably too busy for engine stuff at the moment?
     
    Dicky likes this.
  5. Zed

    Zed Gradually getting grumpier

    The answer as above is not speed or revs, it's summer/winter, hills, wind, load...
    50-55 is very safe but that's what some like. Others like me want to drive as fast as possible sometimes and if you want to drive the engine to it's safe limits, you must monitor it. It's a very different beast to a water cooled engine.
     
  6. Zed

    Zed Gradually getting grumpier

    He moved to the Hebrides to stop people popping round. Doubt he's Buzzcocking, but you never know!
     
  7. Yep I knew he was up there. @77 Westy was asking why he had gone quiet recently on the 2110cc engine build thread. I think he is back touring with Buzzcocks as remember hearing something about buzzcocks re forming on 6music
     
  8. Zed

    Zed Gradually getting grumpier

    That thread died when he realised it would stem his CD sales I reckon, it was dead when I was building my t1 engine years ago, but he was still building engines. I see you're right though, I thought he'd given that up for a quiet life.
     
    paulcalf likes this.
  9. He probably fancied a few tours and a few extra quid. Fair play to him!
     
  10. Standard 2l late bay, standard wheels & tyres, 6 rib box.
    [​IMG]
     
    Zed likes this.
  11. Hmm I'm thinking I'm gunna back off to 60-65
     
  12. Zed

    Zed Gradually getting grumpier

    Interesting, I'll do the same when I get a chance, I think yours shows higher revs.
     
  13. Ok now I've heard/seen that there were some imported busses that although 6rib they run different ratios? Mountain boxes?
    I'm intrigued now.
    What's the cheapest and easiest way for me to get and rig up a Rev counter. Just for an experiment
     
  14. Zed

    Zed Gradually getting grumpier

    Not that different, but I reckon 5mph more at those revs. I have new tyres, tyre sizes aren't brilliantly accurate between makes, like shoes I reckon.
     
  15. No idea, but is your dipstick too hot to hold after a long journey doing the speed you like to drive at?
     
  16. Hi, same set up as you , 60 rev / mph so 60 mph equates to 3600 rpm .
     
    Zed likes this.
  17. Interesting, anyone any idea how fast a bog stock 1600 spins at 60mph (so I can work out other speeds).
     
  18. It's not the engine it's the box/final drive set up. Wheels, tyres gear ratios.
    I'm thinking the only sure fire way is to get a gauge and try it on your bus.
     
  19. I know that, it's completely standard - original engine, box and standard 185 van tyres.
    I've been guessing about 15mph per thousand - 4,ooo at sixty - 4,500 at 68mph
    where theoretically it hits the limiter at the max speed according to the handbook.
     
  20. Apparently there are quite a few different boxes and final drive ratios even within the same style box. In this thread two 6 rib owners have differing rpms at the same speeds
     
    Bernard Fishtrousers likes this.

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