The redline, and, installing a tachometer in a 92B

Forum Modellspecifika forum 92/93 The redline, and, installing a tachometer in a 92B

  • Detta ämne har 12 svar, 5 deltagare, och uppdaterades senast 2013-06-08 14:09 av .
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  • #7216
    5692b
    Deltagare

    I have a ’56 92B with 28hp. It goes without saying that I need to get every bit of horsepower out of my car to try and keep up with traffic (alas, this is a losing battle!).
    I know my two stroke is a high-revving engine. However, the car has no tachometer and I have no real experience with high revving engines so I am actually afraid to take the car to its full potential since I don’t know the safe limits of the car. I am sure that I consistently shift prematurely out of fear of damaging my car.
    Can anyone tell me what the redline is on a 28hp 92B, and, where I can purchase a tachometer with this redline?
    I think installing such a tachometer would greatly enhance my driving experience while giving me a peace of mind that I am not over-revving my engine.
    Tack!
    Jim

    #52690
    phermansson
    Deltagare

    -I think there have been modifications done to lower the revs on a 92, some modification on the gearbox.
    -According to the manual the peak in horse power is at 3800 rpm.
    – All after market rev counters I’ve seen have a adjustable ”red line”, the pointer can be set as you wish.

    #52691

    You can also buy one with a shift light and set it for the required rpm.

    #52693
    5692b
    Deltagare

    Thank you, gentlemen.
    Does anyone know a specific make and model with a shift light that will work on a 2 stroke, 2 cylinder, 6 volt?
    Tack.
    Jim

    #52395
    enor
    Deltagare

    2 stroke, 2 cylinder means 2 pulses per engine revolution – which is just like any 4-cyl 4-stroke. On the other hand, the fact that it has kind of a funky ignition system with two coils etc; and 6V electrics; would lead me to look in the motorcycle world for a suitable tach. Get one for a 1-cyl 2-stroke 6V motorcycle, and hook it up to either one of your coils.

    #52695
    5692b
    Deltagare

    Ha! Like looking for a needle in a haystack. So far, no good. But, I’ll keep looking……

    #52704

    What about a tach for marine purposes? Isn’t two-stroke technology still used widely in boat engines? Snowmobiles? Jet-Ski?

    #52719
    5692b
    Deltagare

    I’ll use marine, motorcycle, whatever will work.

    Are there any 92 new-groupers here that use a tach?

    Tack.
    JIm

    #52726
    William
    Deltagare
    #50592
    5692b
    Deltagare

    Thank you, all.
    Well I guess these digital gauges will work, but, really I don’t think they would be appropriate or functional. It would be great if there was an analog version, with a needle, and a shift light, but I guess I am dreaming.
    Jim

    #52749
    phermansson
    Deltagare

    Model: 2CT52-6V on http://www.westach.com/products/SINGLE/2%20INCH/TACHOMETERS/index.php maybe? Not exactly cheap but should work.

    #52758
    5692b
    Deltagare

    Hej Patrik,
    An excellent lead, thank you.
    I found another source as well, even MORE expensive; they modify & modern vintage tachs. They are here:
    http://williamsons.com/index.html
    I am currently talking to them about preparing a vintage Sun tach that will work on my 92B. If we come to an agreement expect to see a photos here. 🙂
    Thanks to all!
    Jim

    #56440
    5692b
    Deltagare

    It took awhile but the tach is finally installed. If you are an insomniac & need something to help you sleep, here’s a video of the tach in action:

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