Triumphrat

d2mini

I was noticing when cruising along in 4th gear with the rpms up at about 5k, the tach needle is bouncing around between about 4800 and 5100 rpms. Throttle is steady and the bike seems to be running smooth, no jerkiness or anything that I can feel. But the needle is jumping around. And the needle seems fine the rest of the time, just around that 5k area.
Is this normal? :???:

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-dennis
2004 Triumph Thruxton

CYNCRZR

Mine does it around 4,500 ... although since I synched the carbs, it doesn't seem to have as big a bounce.

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HiVel

Yes, it seems a regular thing to be on certain bikes-why? Who knows? My 05 T100 did it and I had the dealer replace the igniter box under warranty- it still does it! Just ride and enjoy . Seems to be a harmless happening.

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2005 T100 Bonneville 865cc "Creamsicle"
2007 Tiger "Old Blue"

d2mini

Ok, good. As long as nothing is about to explode. :-D

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-dennis
2004 Triumph Thruxton

RedBird

Yeah, it's real steady though if you go through 5K so fast it can't bounce back and forth. :-D I sometimes use that as an excuse to cruise at 5500 rpm instead of 5000 rpm. The standard bonnie guys are probably saying to themselves--Why don't these guys get a life. :-D

Larry

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Larry
2003 T-100 (790cc), NARK, NH Togas, 8100 rpm rev limiter, 158 main jets, 42 pilot jets (less than 1 turn out on pilot screws), stock needles--no shims. 13 A/F ratio from 1100 rpm to 4000 rpm; 12 A/F ratio from 4000 rpm to 6000 rpm; 13 A/F from 6000 rpm to 8100 rpm.:D
2007 Tiger 1050--White:D--SW-Motech crashbars, Skidmarx rear hugger/chain guard, Calsci +7 windscreen.

Nang

Do you really cruise at 5K in 4th gear? Change up to fifth and increase you mileage!! :-D

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Nang
2004 Thruxton

azvinny1971

My thrux does the same thing around 5k.

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If I agree with you, we would both be wrong!! Vinny

d2mini

When i'm in the twisties. I like to keep it in a lower gear so i can use engine braking before the turn, then have plenty of power to accelerate through and out.

[ This message was edited by: d2mini on 2006-03-21 07:04 ]

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-dennis
2004 Triumph Thruxton