Installing Progressive Fork Springs on a GL1500 SE - Steve Saunders Goldwing Forums

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post #1 of 23 (permalink) Old 04-07-2010, 08:39 PM Thread Starter
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I have checked the technical forum and have not seen anyone that appears to have the same issue that I am, or it could be that this is not an issue.

I am installing a set of Progressive fork springs (11-1152) on a 1999 SE. After removing the stock spring, washer, and spacer the new Progressive spring is app. .5 inches taller than the stock spring, and spacer setup. Is this normal? It seems that it requires more force to install the caps than the stock, is this to be expected? I have not completed the reassembly so I can't really tell if the suspension is not working correctly.

Any help will be really appreciate.

1999 Goldwing SE
2004 HD RoadKing Custom
1984 HD King of Road Special Edition
1982 1400 Intruder
1971 Triumph T120R

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post #2 of 23 (permalink) Old 04-07-2010, 09:04 PM
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That is normal as you don't use the spacer with the progressive...it is also wound different which makes for a smoother ride.

Yes it is harder to get the caps back on.


EDIT: DANGIT!! Done it again!! Posted under the wife's acct.

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post #3 of 23 (permalink) Old 04-07-2010, 11:51 PM
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Yep, it takes a LOT more pressure to compress the Progressive springs. That's why I made a tool to make the job a lot easier. The real trick is to be sure you have the fork caps aligned and not cross threaded when trying to reinstall them under the pressure of the springs. If you go to Rudy's website you can see the way I did it.

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post #4 of 23 (permalink) Old 04-08-2010, 03:26 AM
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I think you'll find that the ride with the Progressive springs is only smoother if you use a relatively lightweight oil (10w or 15w). Depends on how much load the bike is carrying too I guess.

Another question which comes up regarding this installation on US bikes is whether to put air in them and I believe the answer is no.

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post #5 of 23 (permalink) Old 04-08-2010, 04:36 AM
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Your discrepancy in spring length, is most likely due to your originals 'sagging'.

Length of the longer spring should be 390.6mm(15.38") when new and replaced at a length of 382.8mm(15.07") or less.

My 92 had sagged down to 382mm , when they only had 54,000km/33,554mi on them.

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post #6 of 23 (permalink) Old 04-08-2010, 07:38 AM Thread Starter
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Exavid:

Could you please send me the url link to Rudy's site. Am new to the forum. Thanks..

1999 Goldwing SE
2004 HD RoadKing Custom
1984 HD King of Road Special Edition
1982 1400 Intruder
1971 Triumph T120R

Do not bite at the bait of pleasure, till you know there is no hook beneath it. <Thomas Jefferson>
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post #7 of 23 (permalink) Old 04-08-2010, 07:40 AM Thread Starter
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DustyBoots:

I have measured the springs that have been removed they measure around 15.5 - 15.6 in. The progressive that I am replacing the stock with measure a tick over 20.5. I am starting to think that the wrong springs got shipped. Thanks.

1999 Goldwing SE
2004 HD RoadKing Custom
1984 HD King of Road Special Edition
1982 1400 Intruder
1971 Triumph T120R

Do not bite at the bait of pleasure, till you know there is no hook beneath it. <Thomas Jefferson>
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post #8 of 23 (permalink) Old 04-08-2010, 07:48 AM Thread Starter
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Dusty Boots:



My previous measurements may be confusing. When I measured the original Spring and Spacer and compared them to the new progressive spring that does not use the spacer. My overall difference was around 1.5 inches. The 1.5 inches stick above the fork tube clamp. My concern is that maybe the wrong springs got shipped. This is my first endeavour into the goldwing, usually I have a local shop. I thought this might be a good project to get my hands dirty.

1999 Goldwing SE
2004 HD RoadKing Custom
1984 HD King of Road Special Edition
1982 1400 Intruder
1971 Triumph T120R

Do not bite at the bait of pleasure, till you know there is no hook beneath it. <Thomas Jefferson>
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post #9 of 23 (permalink) Old 04-08-2010, 09:53 AM
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If I'm reading this correctly you have about a 4" spacer with the OEMs springs...

And with the progressive sitting in your tube you have about 1.5" more of the spring exposed when compared to your OEM spring with its spacer.

Aas above - the progressive coils will be a little bit longer and do not reuse your spacer - That extra ~1.5" of preload is actually prettly light and fully intentional.

It sounds like you're on the right path and all that's needed now is to fill oil the the proper levels, install your caps, cech torque on a few bolts and enjoy the nice new feel...
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post #10 of 23 (permalink) Old 04-08-2010, 10:28 AM Thread Starter
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Satan:

That's great to hear I am on the right path. My issue however is how to compress the 1.5 inches over the fork clamp. I have tried using most everything I have in my arsenal and that last .5 of inch is difficult. Any idea's on specialized tools for the this job? My major concern is that with the pressure needed to install the caps I fear cross threading the caps! Thanks for the encouragement.

1999 Goldwing SE
2004 HD RoadKing Custom
1984 HD King of Road Special Edition
1982 1400 Intruder
1971 Triumph T120R

Do not bite at the bait of pleasure, till you know there is no hook beneath it. <Thomas Jefferson>
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