Surge when engaging cruise control - Page 2 - GL1800Riders
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post #11 of 17 (permalink) Old 05-18-2017, 10:19 PM
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When I did mine a while back, I did it by ear. With the engine running (idling), I turned the adjuster until I heard the revs pick up, then backed the adjuster off just enough for the revs to drop back down.

Now, when I hit the cruise at 70(ish), it engages very smoothly. Below that speed, it gains a bit (1-2 mph) when I engage the cruise, but quickly drops back to the desired speed. I prefer this over the 4-5 mph drop that I used to have whenever I set the cruise!

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post #12 of 17 (permalink) Old 05-18-2017, 10:56 PM
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Originally Posted by DaveFromDenver View Post
Question: The "bombsite" setting method in the shop manual... does it provide anything more than setting it the way above? Does it more effectively prevent the cruise control from allowing the speed to drop before it picks it back up again?



David


As I recall the bomb site method improved but did not fix it. Another 1/2 to full turn would tend to be needed. My barrel nut turned so easy that I could tell where the slack was out and backed off about 1/2 turn from there. Seems like 3 and 1/2 turns is what mine needed to be smooth hooking up.


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post #13 of 17 (permalink) Old 05-18-2017, 11:28 PM
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Let me ask the question a different way. Both "bombsite" method and under the handlebar method can make the cruise control engage without surge or lag. What I am curious about is, when driving on hills with cruise control, I go down a hill and my speed might go up over the "set" speed of the cruise control. Then, when the road levels out, the cruise control allows the speed to drop 5 mph or so below its setting, then picks back up to the "set" speed. I set the adjustment using the handlebar method. If I set it instead using the "bombsite" method, would it alleviate this issue?

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post #14 of 17 (permalink) Old 05-18-2017, 11:31 PM
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I think that all that either method accomplishes is to take slack out of the cable between the cruise module and the throttle body. Just my opinion, but I don't think that doing both will make an improvement over doing either method by itself.

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post #15 of 17 (permalink) Old 05-19-2017, 07:02 AM
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Originally Posted by Taddpole View Post
I think that all that either method accomplishes is to take slack out of the cable between the cruise module and the throttle body. Just my opinion, but I don't think that doing both will make an improvement over doing either method by itself.


Agree. Either way, all we are adjusting is cable slack.

With excess slack in my cable it took a second or two after hitting the set button for the slack to take up. If I hit the set button and immediately released the throttle, speed fell several miles per hour before recovering. Once it recovered from the "lag" on initial set, it operated normally.

As far as I could tell, taking up the slack up had no effect on cruise operation after it was engaged.

DaveFromDenver, you are describing the way the cruise fails to adjust for changing environments. I believe that is by design - or lack there of. As far as I know the cruise module monitors one and only one thing, speed. Then adjust throttle at a preset rate.

It doesn't know if I am solo so total weight is say, 1,100 pounds. Or, 2-up, full load and pulling a heavy trailer with total weight approaching 2,000 pounds! It also does not know if the hill ahead is a slight East Texas up grade or a Colorado mountain climb. Head wind or tail wind?

When I am controlling speed with my wrist, I compute all those other variables and react accordingly. The cruise module does its slow and steady thing every time, regardless of solo in East Texas or 2-up, full load going up Mt. Evans.


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post #16 of 17 (permalink) Old 05-20-2017, 06:02 AM
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Yes. Mine does the same thing. Brand new bike. Seems like a persistent issue that should have I been addressed a long time ago in production. Honda quality?

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post #17 of 17 (permalink) Old 05-20-2017, 07:39 AM
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