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8Track
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« on: February 18, 2014, 09:24:01 PM » |
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Hi all,
I did a search and couldn't find anything so thought I'd ask. Does anyone know why Honda riveted those thick plates to the top and bottom of the swingarm? I first noticed them shortly after buying my bike and got a bit worried that it was some kind of backyard repair. However a search of swingarms on ebay shows that all Valkyrie swingarms have these fitted.
What's the story?
Thanks,
Mark
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Skinhead
Member
Posts: 8724
J. A. B. O. A.
Troy, MI
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« Reply #1 on: February 19, 2014, 05:01:39 AM » |
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I'm sure they just fill (close out) a void left in the assembly during manufacturing.
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 Troy, MI |
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John Schmidt
Member
Posts: 15195
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #2 on: February 19, 2014, 08:58:46 AM » |
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Gives a bit more stability in the swingarm due to torsional stress.
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Joe Hummer
Member
Posts: 1645
VRCC #25677 VRCC Missouri State Representative
Arnold, MO
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« Reply #3 on: February 19, 2014, 09:31:36 AM » |
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To provide a mounting spot for some real horns!!
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1999 Valkyrie Interstate
You pay for the whole bike, why not use it Jerry Motorman Palladino
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OnaWingandaPrayer
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« Reply #4 on: February 19, 2014, 01:59:06 PM » |
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My GL1500 has plates top an bottom of the swing arm . Held in place by 4 rivets . But there is a rubber sheet under the rivets . I expect it is to control some harmonics /noise . I cant say if the Valk arm has the rubber sandwiched in there , but my best guess it it would be like the Wang .
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BF
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« Reply #5 on: February 19, 2014, 02:17:55 PM » |
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Take 'em off and see what happens.
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I can't help about the shape I'm in I can't sing, I ain't pretty and my legs are thin But don't ask me what I think of you I might not give the answer that you want me to  |
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steveB (VRCC UK)
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« Reply #6 on: February 19, 2014, 02:43:21 PM » |
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No void under them just a rubber sheet, since they are only held by a handful of rivets do not think they are for structural rigidity. We have removed the plates to powder coat the swing arm on several Valks and I've seen some serious rust and in 2 cases holes rotted through the arm. (Looks like the rubber traps water against the arm and that large welded seam around the inside holds dirt and salt)
Recently had to scrap a swing arm on a '97 with 27 000 miles on and fit a replacement from Pinwalls as three 2'' long holes appeared when poked with a buck knife (beyond welding).
This is probably due to the UK's love of salting roads at the first hint of frost.
Only a problem if you live and ride in a cold wet area, where it might be worth prodding your swing arm with a sharp screwdriver occasionally.
Have been thinking of removing them on my own bike and welding up the holes, along with filling the gaps where the pressed plates are attached to the drive tube. Just want to see if they are there to damp road/transmission noise.
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Ricky-D
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« Reply #7 on: February 19, 2014, 02:44:56 PM » |
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The plates to which you refer are not metal and are not structural.
They are there for protection from road debris and other objects.
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2000_Valkyrie_Interstate
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8Track
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« Reply #8 on: February 19, 2014, 06:34:31 PM » |
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Thanks everyone,
So in summary they are there for added strength/rigidity, sound deadening, and protection from debris, but may cause rust issues in wet/salty climates.
Seems strange they wouldn't have just made the swingarm stronger to begin with, obviating the need for the plates. Maybe they discovered some issues after tooling up!
Thanks
Mark
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pancho
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« Reply #9 on: February 19, 2014, 09:27:54 PM » |
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No void under them just a rubber sheet, since they are only held by a handful of rivets do not think they are for structural rigidity. We have removed the plates to powder coat the swing arm on several Valks and I've seen some serious rust and in 2 cases holes rotted through the arm. (Looks like the rubber traps water against the arm and that large welded seam around the inside holds dirt and salt)
Recently had to scrap a swing arm on a '97 with 27 000 miles on and fit a replacement from Pinwalls as three 2'' long holes appeared when poked with a buck knife (beyond welding).
This is probably due to the UK's love of salting roads at the first hint of frost.
Only a problem if you live and ride in a cold wet area, where it might be worth prodding your swing arm with a sharp screwdriver occasionally.
Have been thinking of removing them on my own bike and welding up the holes, along with filling the gaps where the pressed plates are attached to the drive tube. Just want to see if they are there to damp road/transmission noise.
Thanks Steve,,,,, now I (and probably a hundred other paranoids) want to drop everything and pop those pieces off to check the condition of my swingarm,,, I have wondered about them..... |
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The most expensive things you will purchase, are those things you would not have needed if you had listened and obeyed.
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98valk
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« Reply #10 on: February 20, 2014, 04:29:23 AM » |
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Thanks everyone,
So in summary they are there for added strength/rigidity,
No they do not add strength/rigidity. |
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« Last Edit: February 25, 2014, 04:56:13 AM by CA »
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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valkeire
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« Reply #11 on: February 24, 2014, 04:02:09 PM » |
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I recently posted some photos of my rear arm on the UK site, to show the effects of all year round riding in Ireland on my 99 Interstate.. Have a look here; http://tinyurl.com/pcbl99lThe last photo is one that on it way from the USA. Valkeire |
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Skinhead
Member
Posts: 8724
J. A. B. O. A.
Troy, MI
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« Reply #12 on: February 24, 2014, 04:05:59 PM » |
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Dude, did they do an deep sea salvage on you bike or what? I have never seen any thing like that that hasn't been submerged for several years.
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Troy, MI |
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8Track
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« Reply #13 on: February 24, 2014, 07:00:39 PM » |
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I recently posted some photos of my rear arm on the UK site, to show the effects of all year round riding in Ireland on my 99 Interstate.. Have a look here; http://tinyurl.com/pcbl99lThe last photo is one that on it way from the USA. Valkeire Wow! Is that caused by salt on your roads? That looks horribly dangerous! |
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The emperor has no clothes
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« Reply #14 on: February 24, 2014, 07:09:51 PM » |
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Maybe you should spray your new swing arm with that rubber undercoating stuff. I'm with 8track that looks very dangerous!
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Jess from VA
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« Reply #15 on: February 24, 2014, 08:19:01 PM » |
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I cannot be sure, but that may have been Jesus' Valkyrie.... maybe even Moses'.
Archaeology comes to mind.
Have it carbon dated.
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #16 on: February 25, 2014, 08:40:33 AM » |
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Now that I see that the entire surface of each of the plates is backed by sheet metal, I'd agree with others above that the only purpose of the plates is to dampen some kind of harmonic resonance.
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Ricky-D
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« Reply #17 on: February 25, 2014, 08:51:50 AM » |
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Nope, I don't believe that!
It looks to me that it has been modified with repair some time in the past.
You can see the remains of fiberglass within all the destruction and for sure
there is no metal plate underneath the fiber board that is stock on an
untouched swing arm.
Go look again!
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2000_Valkyrie_Interstate
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #18 on: February 25, 2014, 11:18:09 AM » |
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You can see the remains of fiberglass within all the destruction and for sure
Go look again!
Okay, I looked again. The "fiberglass" you see looks, to me, more like a trip through a cow pasture. |
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Rio Wil
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« Reply #19 on: February 25, 2014, 11:25:57 AM » |
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The metal plates on my '01 IS appear to be aluminum (soft silver metal easily marked with a file).....certainly not fiber. Also, a magnet is attracted to the plate throughout its length and breadth meaning the backing behind the plate is solid steel. I did not try the magnet on the plate on the top side of the swingarm.
And since the metal plates are backed with a rubber sheet, I am guessing some kind of noise/harmonics dampening....
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« Last Edit: February 25, 2014, 11:37:41 AM by Rio Wil »
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Ricky-D
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« Reply #20 on: February 25, 2014, 12:12:35 PM » |
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Ok, never one to not admit being wrong, I went out and looked at my Valkyrie.
Yep, the plate is ferrous and that is a rubber piece under it.
It's a cover of some sort.
Definitely not structural. Not with pop rivets being employed!
Harmonic dampening? I can't see that either.
My feeling is Honda just wanted to cover up an area for whatever
reasons, unbeknown.
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2000_Valkyrie_Interstate
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Rio Wil
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« Reply #21 on: February 25, 2014, 08:26:08 PM » |
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On second look, Ricky, I agree the plate is ferrous. it just seemed way too soft when I hit it with a file,,,,,,,still a mystery?
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indybobm
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« Reply #22 on: February 26, 2014, 09:00:14 AM » |
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Even with the plates rivited on, it would add to the rigidity of the swingarm. The plates sandwich the swingarm in between them.
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So many roads, so little time
VRCC # 5258
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Ricky-D
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« Reply #23 on: February 26, 2014, 09:13:38 AM » |
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No, the swing-arm is not sandwiched between the plates but rather positioned between the plates,
since they (the plates) are independently fixed to the swing-arm. (a fine point)
This is not to mention the rubber part that is positioned between each plate and the swing arm
which lends no credulity to the theory of adding rigidity.
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2000_Valkyrie_Interstate
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Rio Wil
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« Reply #24 on: February 26, 2014, 04:50:51 PM » |
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The gl1000-1100-1200 does not have the riveted plates on their swingarms. The gl1500 however does, it is smaller than on the valkyrie arm (same width but not as deep). The gl1800 is a completely different horse so it is not relevant. Also that portion of the swingarm is located so high up behind the motor, road debris can't possibly contact it,.......so it has to do with sound deadening/harmonics or witchcraft......lets vote!!! ....  |
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4s2many
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« Reply #25 on: February 24, 2022, 09:12:11 AM » |
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Howdy Guys and Gals
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2001 I/S
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Grandpot
Member
Posts: 630
Rolling Thunder South Carolina Chapter 1
Fort Mill, South Carolina
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« Reply #26 on: February 24, 2022, 10:38:41 AM » |
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I recently posted some photos of my rear arm on the UK site, to show the effects of all year round riding in Ireland on my 99 Interstate.. Have a look here; http://tinyurl.com/pcbl99lThe last photo is one that on it way from the USA. Valkeire Let's just be grateful you spotted the rot and replaced the arm before you had a tragedy. Ride safe. |
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Experience is recognizing the same mistake every time you make it. |
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4s2many
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« Reply #27 on: February 25, 2022, 09:35:09 AM » |
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so has anyone discovered what is going on with this "plates"?
mine has bit of surface rust on just the top one.
do I just thoroughly treat(using POR15), paint, and reassemble?
only had the bike a couple months, think she has always been garage kept and little to no wet riding.
and overall bike is very clean.
Hmmmmmmm?
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2001 I/S
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