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When I'm ridng I am at 4,000rpms at 60mph. This seems a little high to me, is it? Anyway I can lower it? 6speed conversion, new final drive ratio?
 

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The 1100s are about like that.

The 1200s and 1500s are about 20mph per thousand RPM in 5th gear.

There's no cost-effective way to reduce that with a GL-1100 that I am aware of.
 

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'80 to '82 transmission is geared much lower than the '83 GL1100. The '83 GL1100 drops 500-700 RPMs lower at highway speeds.
 

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Actually the '80-81 are the same, ,arround 4000rpm =60 mph. '82 reads about 67 mph at 4000 on my '82.Your bike is normal. Doug
 

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Not unless you want to crack open the engine and insert '83 gears, or put in an '83 engine. That's the year the ratio changed.
 

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Bob Cassel
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My 82 is at 4000 at 70 mph, or there-a-bout. Check your owners manual, but 4K at 60 seems a little high.
 

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Or a corvette Ls3 motor......1500 rpm at 70 mile an hour:ROFL:
 

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well to be honest i'd tell ya what mine does but last year i was drag racing shifting at 7500rpms on the track and the tach just went down to 0 lol

so i just go by sound lol
 

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BensGL1100 wrote:
I think I need a trans rebuild anyway so I just might
Possibly better off just getting a different bike?? :?
 

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I don't remember what my Rpms were, but at 42MPG USA on 10% ethanol at 65-70mph I did not complain LOL
Really, my tach was acting up at times, then burned out, I don't really know now what my rpms were or are at any speeds.

As far as making RPMS lower, only good way might be to install a taller rear tire if you can. Taller the tire the less it turns per mile, the lower the rpms. Speed read from front wheel so no effect there.

My 1500 is running too low rpm in 5th at local rural back road speeds, too high in 4th for me. I got a taller Taxi tire looking forward to installing someday before it rots away sitting in shop. Should lower the 4th gear Rpm's at cruising speed back roads local, then highway interstate give me more speed at same rpm as now, or lower RPM at same speed.
 

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jnel57 wrote:
just put a 1800 in it. 68mph at 3500rpm
Really? My 1500 does 68mph at 3000rpm. I would have expected the 1800 to have higher gearing.
 

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I don't know, I think my 1500 was doing 55mph around 2,500 on tach.

Only opened her up a couple times to around 70, but I think that was close around 3K on tach.

I got about 38mpg going to Branson MO. Saturday on 1500, mostly about 55mph and 45mph on backroad. I did open it up a few times here and there kinda hard. Also had to wait for wife and her friend in cage to catch up at times so some sitting and idling a few places like where we changed roads at. LOL
If wife had been driving I would not have to have waited, her friend drives kinda slow even on the straights.

55mph most the way, does a Cobalt even do 55mph? I think hers only does 45 or 50 LOL
 

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My Vulcan 750 does 4000 at 60 mph, and I thought it was geared low. The old Kawasaki ZL900 and ZL1000 Eliminators both ran exactly 4000 rpm at 60. I don't know what my '85 Goldwing is doing, it has an LCD digital bar graph tach that is very hard to read through the weathered instrument face.

If you want really low rpms at highway speed, a really big v-twin is the way to go.
 
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