Triumphrat

petcock

I've got the standard bonnie black w/o a tac. I listen to the motor whine and shift accordingly. It just occurred to me that I may be reving too high when I'm commuting to work each day.

I often reach speeds of just over 100mph and hold it for about ten minutes each day. Am I red-lining at that speed?
-Gene

d2mini

Redlining at 100mph in 5th?
Not a chance.
You're probably around what.... 5-6k? Anyone? I can't remember. I know that at around 80mph I'm between 4-5k.

Now whether or not you get near redling while your are on your way up depends on how high you rev it before shifting. But if you did hit redline you would feel the engine cut out. In 5th gear I don't even think it's possible to redline buy just cruising, even at the bonnie's top speed.

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-dennis
2009 Bonneville

dave_bee

on my 2004 Bonneville all factory standard, no sprocket change etc. When I'm at 70mph the engine is at 4500 rpm obviously in 5th gear.

Kstrhypes

I wouldn't be concerened at all about redlining. As d2mini said you'd bump off the limiter if you rev too high. That being said, I can't imagine riding a bike without a tach. I'd rather have a tach than a speedo.

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petcock

Good to hear, I didn't think about the bike being set up to run at top speed without killing the thing. I'm pretty carful to shift before letting it wind up to much.
-Gene

FattRat

Even if you rev your engine to the factory rev limiter of about 7,400 rpm, you would not be rev'ing it dangerously. I have a Black too, but with a Pro Com igniter. I can spin her up to 8,400 rpm...... but it does me no good to go much beyond an approximated 7,900 rpm.

Not to worry, it's good for the engine to be spun up once in a while!

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monkeyboy

My thruxton has a tach, so I always know where I am at. It seems around 5,000 RPM the motor gets a little vibration, and seems to be close to the redline, but if you rev it a little more, it smooths out around 6,000 and pulls clean to the redline.

I read in a few reports that the test riders noticed that too, so it isn't just mine.

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2006 Thruxton

petcock

Ok, speaking of tacometers, what is the big deal about them. I use them when I drive a standard car, so I known when to shift, but on the bike, its so easy to know with power and noise. I just don't see how I would ride any different if I had a tac.

I also prefer the single "clock" look.
-Gene

d2mini

IMHO, you are right. You don't really need one. Especially with today's rev limitors protecting your engine for you. I wanted one for two reasons... I happened to like the look of two clocks, and I was also a motorcycle newbie so I needed to be able to see what I was doing. Other than that, I can't really see any benefit.

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-dennis
2009 Bonneville

sweatmachine

I'd lose the speedo first. on my rigid I'm only running a tach. I say to hell with the speedo, I know how fast I'm going by wind/feel/comfort zone, and MPH don't matter. I want to know how fast the engine is going. Plus tachs are cool!

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