RPM's and speed


Information and questions on GL1100 Goldwings (1980-1983)
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tprender
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1995 GL1500SE

RPM's and speed

Postby tprender » Sun May 01, 2011 6:51 pm



I got this '81 just over a month ago and I feel like I want to shift to another gear on the highway. I am doing 65 and the tach is reading 4500, but the engine sounds like I need to shift to a higher gear. I have counted and I am running in 5th gear. The bike that I got rid of (Kaw vulcan 750) didn't sound anything like the goldwing does. Is this the right rpm for that speed? Is this because in the '80s the top speed was set back to 55 and Honda made the bike to run at 55 not 70?



goatman
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Location: Winfield,Missouri
Motorcycle: 1981 gl1100i

Re: RPM's and speed

Postby goatman » Mon May 02, 2011 8:01 am

That RPM sounds about right. I also have an 81 and know what you mean, that is just the way they are geared. They don't mind being revved up, much more fun to ride if you get in the habit of hitting at least 5K before shifting to the next gear. I am used to running 4K and up when cruising on the highway and it doesn't bother me anymore.

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WingAdmin
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Re: RPM's and speed

Postby WingAdmin » Mon May 02, 2011 10:34 am

I was constantly trying to shift into my nonexistent sixth gear for the first year or so when I got my Goldwing. Eventually you just get used to the fact that it likes to run with the revs up.

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littlebeaver
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Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
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Re: RPM's and speed

Postby littlebeaver » Mon May 02, 2011 4:27 pm

I can totally relate to this, 45 grand is about right for that speed, I'm sure they geared the bike for the times, try riding at 55 for a minute or two and see how nice it is...It's nothing to worry about or even be concerned over, there are guy's with 81's with well over 100 grand on there bikes..I still try to shift another gear but it's not there..ha ha..we are all in the same boat.. :D

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bcassel
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Motorcycle: 1982 GL1100 Interstate. Originally Candywine color, now Chrysler Cool Vanilla.

Re: RPM's and speed

Postby bcassel » Mon May 02, 2011 4:47 pm

My 82 runs 65 mph at 4,000 and I know they changed the gears up a notch between 81 and 82, so you should be about right. I've noticed that my bike gets better mileage at 4,000 revs than at 3,500. Seems weird, but every engine has its own "power curve" and the hondas of that era liked high revs. Consider the red line is about 8,000 so you're not even close yet.

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littlebeaver
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Re: RPM's and speed

Postby littlebeaver » Mon May 02, 2011 5:13 pm

I just went out for a test ride on this subject, at 65 mph on my 81, well tuned goldwing, it's right at 4.200 rpm and at 70 is right at 4.500 so I hope this is better for ya, ..Hope this helps...Oh I'm a big dude at 270 lbs, .I'm not sure if that has as any impact on the rpm's or not..it makes sense if it does, if a man is only 145 lb's I'm sure the rpm's would be lower at that speed

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suvcw04
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Motorcycle: 2005 GL1800 Lehman Trike

Re: RPM's and speed

Postby suvcw04 » Mon May 02, 2011 7:22 pm

RPM's are the result of gearing, not the weight being carried.

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littlebeaver
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Re: RPM's and speed

Postby littlebeaver » Mon May 02, 2011 7:40 pm

so rpm's won't be affected if I was like 500 lb's is that what your saying.. :lol:

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suvcw04
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Re: RPM's and speed

Postby suvcw04 » Mon May 02, 2011 8:02 pm

Not even if you were 5000 pounds.
At 60 mph you travel 5280 feet every minute. If the bike is turning 4500 rpm, it moves 1.1733333 feet every time the engine turns over. It matters not if the bike AND passenger weigh 10 pounds or 10,000 lbs. It may take a little longer to get to 60 mph with a heavier combination, but as long as the clutch isn't slipping, the weight does not matter.

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littlebeaver
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Re: RPM's and speed

Postby littlebeaver » Mon May 02, 2011 8:33 pm

wow. thanks, I did not know that.. ...humm learn something new everyday..thanks again...

tprender
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Motorcycle: 1986 gl1200
1995 GL1500SE

Re: RPM's and speed

Postby tprender » Mon May 02, 2011 9:53 pm

Thanks guys for all of the info. I guess then that I am spot on with what I have.

dvcruz
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Motorcycle: 1993 GL1500 Aspencade
1983 GL1100 Interstate

Re: RPM's and speed

Postby dvcruz » Wed May 04, 2011 2:36 am

I noticed you also lay claim to a '83 model. My '83 turns 3700 rpm at 65 in fifth. At 70, it is just touching on 4000 rpm. Maybe you're just used to running the '83 at those lower rpms?
Back in the San Diego area!

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littlebeaver
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Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: RPM's and speed

Postby littlebeaver » Wed May 04, 2011 9:34 am

that make's me want a 83 now, thanks a million.. :lol: :lol:

Birdoprey
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Location: Roscoe, Tx
Motorcycle: 82 GL1100 Interstate
03 Hayabusa

Re: RPM's and speed

Postby Birdoprey » Sun May 15, 2011 10:45 pm

Was searching through threads and ran across this thread. I was just given a 81 or 82 GL1100 by a friend. The bike had not been run in 2 years and he thought it needed a starter relay as he had replace the battery and had the started "checked" by a local MC mech. I found the starter to be bad and the battery was dead. Got a new starter and new battery and she started right up. Anyway, i've been running it up and down the road running carb cleaner through it and noticed mine spins quite a few more rpm than i expected it would. More so than ya'll have seen in your above posts.
At an indicated 65mph on the speedo, my tach is sitting just a hair over 5000rpm. When i show 70 on the speedo, my tach is showing just under 5500rpm! Could my speedo be off? I would think the only way to do this is to run a larger diameter front tire as the speedo is driven off the front wheel. There is a Dunlap 591 Elite MR90-18 on the front. Not sure what came on the front? Isn't my bike showing more rpm than it should? Are there any rear dif that can be swapped on from different years that maybe have lower numerical gearing to drop the rpm some?

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eklimek
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Re: RPM's and speed

Postby eklimek » Mon May 16, 2011 8:25 am

Interchange compatbility not stated. Here are specification of final drive, 5th gear ratio and transmission primary and secondary reduction.

Final drive gear ratio

3.4:1 75 to 79
3.09:1 80 & 81
3.1:1 82
2.83:1 84 -97

5th gear ratio

0.939 75 - 79
0.90 80 & 81
0.829 82 - 84
0.80 85 - 87
0.759 88- 95

Primary reduction

1.708 75 - 87
1.59 88 - 95

Secondary reduction
0.825 75 - 79
0.973 80 - 97
0.971 85 - 95

Birdoprey
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03 Hayabusa

Re: RPM's and speed

Postby Birdoprey » Mon May 16, 2011 9:58 pm

Well, i threw my GPS onto the GL1100 this evening and took it for a spin. At an indicated 60mph on my speedo, the GPS reads 65mph. Indicated 65mph on my speedo showed as 70mph on the GPS. RPM's are a little over 4500 at an actual 65. I feel a little better now...:)

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tallman21
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Location: Rahway, New Jersey
Motorcycle: 1980 GL1100i

Re: RPM's and speed

Postby tallman21 » Tue May 17, 2011 8:47 pm

I am glad i found this post cause i was worried about the same problem. Granted i dont have a tach cable yet so i dont know the RPMs but ive been around bikes a while and can tell when to shift and all. The RPMs sounded wayyyy to high.




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