Pogo effect with Progressive Mono-tubes. Gl1800 - Steve Saunders Goldwing Forums

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post #1 of 18 (permalink) Old 07-09-2015, 08:35 PM Thread Starter
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Pogo effect with Progressive Mono-tubes. Gl1800

I went ahead and installed mono-tubes in my 2012. With the tubes a set of all-balls head bearings and a fork brace was installed. The bike handled wonderfully in turns and tracked straight as an arrow. However; there seems to be no dampening. The bike pogos on light imperfections in the road. I did not install the pre-load shims. 10w oil filled exactly to specs. I weigh 225. Anyone else have this problem and how did you solve it?
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post #2 of 18 (permalink) Old 07-09-2015, 09:29 PM
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Call Progressive, their tech people are awesome --on their springs for the 1500 they call for 15w
Based on your weight you may need something else- I don't know anything about the monotubes, just throwing out ideas
Have you gotten some break-in miles on them?
What about riding without the fork brace?
Why no shims? does that add or take away preload?
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post #3 of 18 (permalink) Old 07-09-2015, 09:36 PM Thread Starter
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Call Progressive, their tech people are awesome --on their springs for the 1500 they call for 15w
Based on your weight you may need something else- I don't know anything about the monotubes, just throwing out ideas
Have you gotten some break-in miles on them?
What about riding without the fork brace?
Why no shims? does that add or take away preload?
There are complaints about harshness with the shims. Looking for a balance of ride/firmness. I have considered removing the brace. 10w is the recommended oil. I can't stand the ride long enough to attain a possible break-in.
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post #4 of 18 (permalink) Old 07-09-2015, 10:02 PM
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bad idea removing the fork brace.

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post #5 of 18 (permalink) Old 07-09-2015, 10:49 PM
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I don't think the fork brace would be the culprit either.
The forks has a small brace stock for the fender support.
My experience with for braces was on an ST1100. It didn't help the ride so to speak. But it did help on tire cupping a lot! Seems to handle a little different in corners. But making the tire last longer was worth the price to me.
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post #6 of 18 (permalink) Old 07-10-2015, 12:37 AM
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removing fork brace was to test if it made a difference, as I have to throw out a decent guess!
Progressive tech support is your best bet for real knowledge--your weight may be the issue, or not used to the new setup?
Mine seemed really tight at first- probably because I was used to mushy~ ( I realize totally different setup)
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post #7 of 18 (permalink) Old 07-10-2015, 05:57 AM
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Did you put the anti-dive washers and spring off the bottom of the old fork piston on the mono-tube? I personally would have left them off to completely disable the anti-dive. The oil you add is really there just to lubricate the forks, the damping oil is captive in the tubes.

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post #8 of 18 (permalink) Old 07-10-2015, 07:32 AM
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Progressive Mono-tubes are stiffer so you will feel more the road imperfections.


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post #9 of 18 (permalink) Old 07-10-2015, 07:47 AM Thread Starter
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Quote:
Originally Posted by DaveO430 View Post
Did you put the anti-dive washers and spring off the bottom of the old fork piston on the mono-tube? I personally would have left them off to completely disable the anti-dive. The oil you add is really there just to lubricate the forks, the damping oil is captive in the tubes.
I removed the brace this morning. The forks seem to have a high degree of stickion. I can hear the binding. Contacting cyclemax for a replacement set. Removing the washers for the ADM while in there this time. If this is the normal ride for PMT then out they go. Traxxion has to be the answer. Expensive!
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post #10 of 18 (permalink) Old 07-10-2015, 09:27 AM
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Dave- wouldn't any oil external to the cartridge shock be for cooling that cartridge?
The constant movement it goes thru creates heat....outside oil would extract said heat, and keep any visible springs happily cooled too?
(see how little I know about1800s..are there springs outside the mono tubes? should I even care, because I am on a 1500)


Progressive opens in an hour- call them and describe the situation-- before tearing your bike down and returning current shocks
They can put a different spring or valve etc inside to tailor the shock to your needs
Racing is their business, so having a variety of parts choices the public doesn't know about = what do you want- Yes we can!
I know they overhaul/rebuild their shocks and offer choices then.
Another example- you don't want a tight 1500?? springs for xyz 1200 are same size in a softer rates, call tech support
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