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indybobm
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« on: June 28, 2015, 03:01:05 PM » |
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I was reinstalling my rear wheel today after a tire change and I decided to check my rear shocks to see if the arrow was pointing to the correct number. Anyway, the shock appeared to be on setting #3. I adjusted it to 4, and then 5. When I went past 5, it made the sprong sound (technical term). I noticed the arrow was not pointing to #1, #1 was on the other side of the shock. I rotated the shock 3 more times and it went sprong again. This time the arrow lined up with #1. Strange. I decided to test this using an old leaky Valkyrie shock. I bolted it to a 2x4 in the vice to secure it. Sure enough, starting at #1 it went through #5 and went sprong, then went through #4 and went sprong. When you rotate the shock 360 degrees, the sequence is 1 2 3 4 5 sprong, 1 2 3 4 sprong. Everything I have read says that when you go past 5 the shock is reset to #1. This does not appear to be the case. You need it rotate it until it goes sprong again to be in the #1 position. The I/S shocks that I have on my bike now do the same thing.  |
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VRCC # 5258
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dago mooserider
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« Reply #1 on: June 28, 2015, 03:32:12 PM » |
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I believe mine does the same thing and I have never understood what was going on with it.
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98 valk, 2000 valk, 04 gsxr 750, 85 atc250r, 88 trx250r, 97 expedition (it's indestructible!), 12 civic si, 16 acura tlx, 18 f150.
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Jess from VA
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« Reply #2 on: June 28, 2015, 04:12:40 PM » |
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Sorry I am no help. I gave away perfect IS shocks with 3400 miles when I put put my first 440s on. And lived to regret it. So you are saying that giving it two full rotations gives it a premature sprong?   |
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indybobm
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« Reply #3 on: June 28, 2015, 04:19:13 PM » |
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No, I am saying that you need to go through two 'sprongs' to get it back to Setting #1.
I found (on two different shocks) that on one complete rotation you will get the following sequence:
starting at #1
1 2 3 4 5 sprong 1 2 3 4 sprong. And THEN you are back to #1. One complete revolution of the bottom of the shock.
If you stop at the first sprong, you will then get 4 settings, not 5. And who knows what they are!
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« Last Edit: June 28, 2015, 04:21:18 PM by indybobm »
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So many roads, so little time
VRCC # 5258
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The emperor has no clothes
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« Reply #4 on: June 28, 2015, 04:29:40 PM » |
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Sorry I am no help. I gave away perfect IS shocks with 3400 miles when I put put my first 440s on. And lived to regret it. So you are saying that giving it two full rotations gives it a premature sprong?  I can usually get in at least 3 rotations before I sprong.  |
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HurstRob
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« Reply #5 on: June 29, 2015, 02:33:46 AM » |
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and just for info which is the more firm setting?
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indybobm
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« Reply #6 on: June 29, 2015, 06:02:23 AM » |
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The firmest setting is #5.
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So many roads, so little time
VRCC # 5258
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #7 on: June 29, 2015, 07:29:18 AM » |
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While it makes perfect sense that you would need to go through the sequence twice to make the arrows line up properly again, I'm pretty sure you are mistaken that the second time it "sprongs" after 4. If starting at arrow pointing to 1, it goes arrow to 2, arrow to 3, arrow to 4, arrow to 5, sprong to unmarked 1, unmarked 2, unmarked 3, unmarked 4, unmarked 5, sprong to arrow pointing to 1, where you started. Take a look at the photo below to get an idea how this works. There are two "ears", 180° apart (they are black in this photo), that support the preload cam, which pushes against the end of the spring. The steps through the first half of the rotation (0-180°) MUST be identical to the steps through the second half of the rotation (180-360°).  PS: I wouldn't intentionally do the "sprong" too many times. I'd be afraid of eventually hammering the ears right off of the shock. |
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« Last Edit: June 29, 2015, 07:32:37 AM by Gryphon Rider »
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doubletee
Member
Posts: 1165
VRCC # 22269
Fort Wayne, IN
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« Reply #8 on: June 29, 2015, 08:16:14 AM » |
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Is one not supposed to twist these shocks "backwards?" (i.e. from 5 to 4 to 3, etc?) I never go past 5 (have never even had my shocks past 4). I go up to 4 when we load up the T-bag for a trip, and then go back to 3 for normal 2-up riding.
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indybobm
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« Reply #9 on: June 29, 2015, 09:19:19 AM » |
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Gryphon Ryder: I agree that it does not make sense. As soon as it reset after '5' I counted that as '1'. It then went 2 3 4 and sprong. I tried it again today (on a bad leaking shock) and it does now go 1-5 sprong, 1-5 sprong. I think previously that it must have bounced over one setting after sprong.
Is this really bad for the shock to do this. You can go in the reverse direction to go from '4' to '3' if you have the weight off of the shock. The PO of my bike had obviously adjusted them in the reverse direction with the weight on the shock as the holes are elongated. I have been playing with my old shocks, I put I/S shocks on a couple of years ago.
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So many roads, so little time
VRCC # 5258
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #10 on: June 29, 2015, 09:31:18 AM » |
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Is this really bad for the shock to do this.
I'm assuming "this" is going past 5 to 1. I'll let you do the experiment to see how many times this can be done without damage. My concern is it is similar to those spring-loaded centre punches; you pre-load the centre-punch spring with force from your hand until the spring releases all the energy at once, creating the dimple in the steel you wish to drill. The same hand-force on a non-spring-loaded centre punch will never create a dimple. You need a good strike from a hammer to do the same job.  |
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six2go #152
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« Reply #11 on: June 29, 2015, 10:49:56 AM » |
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Is one not supposed to twist these shocks "backwards?" (i.e. from 5 to 4 to 3, etc?) I never go past 5 (have never even had my shocks past 4). I go up to 4 when we load up the T-bag for a trip, and then go back to 3 for normal 2-up riding.
Agreed Tony. When I 1st got my Valk back in '98 it was pretty common knowledge among folks that ya didn't go past the #5 setting. It may even be in the owners manual but you know how people seem to think the manual isn't for them or is wrong. |
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Steve K (IA)
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« Reply #12 on: June 29, 2015, 11:23:47 AM » |
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PS: I wouldn't intentionally do the "sprong" too many times. I'd be afraid of eventually hammering the ears right off of the shock.
Exactly! When I had the original shocks, I just moved them between 1 and 5. Never past 5. Those little ears are spot welded on. They won't take too many beatings (sprongs). |
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 States I Have Ridden In |
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davit
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« Reply #13 on: June 29, 2015, 12:44:34 PM » |
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PS: I wouldn't intentionally do the "sprong" too many times. I'd be afraid of eventually hammering the ears right off of the shock.
Exactly! When I had the original shocks, I just moved them between 1 and 5. Never past 5. Those little ears are spot welded on. They won't take too many beatings (sprongs). Going back to 1981 (and probably before that) Honda owner manuals advised against rotating past 5. |
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indybobm
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« Reply #14 on: June 29, 2015, 05:10:40 PM » |
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The main reason I posted this is because I have seen people referring to going past 5 and the resulting sprong noise. Since I had an old leaky shock I thought I would play with it to see what happened.
I do agree that you should go up and down but not past 5. Even if you did, the arrow would be on the wrong side of the shock.
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So many roads, so little time
VRCC # 5258
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