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Bizarre Rear Suspension bounce

6310 Views 36 Replies 14 Participants Last post by  Brockie
Hey all.

Was out riding yesterday running errands and I'd made a couple stops where everything seemed fine. But as I was leaving, backing up my 2017 DL650 XT, I noticed an alarming amount of bounce to the rear suspension. Like the rebound was way, way loose and wasn't that smooth feeling you'd normally expect when dealing with settling in the suspension. The overall suspension feels okay I think? But walking backward (using one foot since I can't reach the ground on both sides), I would take a step back and feel MULTIPLE bounces in the backend which is super weird.

I got off the bike and tried bouncing it a bit but it was fairly inconclusive.

As I was riding through the parking lot, I bounced on top of the bike and it seemed okay? Riding didn't yield anything funky. But walking the bike while on it, forward or backward, and that bounciness was super evident. And it was absolutely not doing it before that stop.

I also wondered if its just with using the brake it might cause a bounce but I'm not sure? First time was walking it down a slight incline. Nothing intense. The other times I think were relatively flat.

Suspension was recently rebuilt by Sasquatch. Within the last few months. I haven't ridden my bike a ton due to other things so I can't imagine it's general wear. The chain, and sprockets do require replacing and I'll be doing that probably today or tomorrow. Do you think that could play into it? It also has Shinko 705s on it.

Really appreciate any suggestions. I'm a bit stumped with this one.
Thanks!
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But walking backward (using one foot since I can't reach the ground on both sides), I would take a step back and feel MULTIPLE bounces in the backend which is super weird.

I got off the bike and tried bouncing it a bit but it was fairly inconclusive.

As I was riding through the parking lot, I bounced on top of the bike and it seemed okay? Riding didn't yield anything funky. But walking the bike while on it, forward or backward, and that bounciness was super evident. And it was absolutely not doing it before that stop.
Just throwing in an alternative to the above suggestions.
With low recent use, could you have a frozen chain link or two?
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Been there, done that.
The shock absorber is done. Blown internals. The spring still holds up the bike, but the shock absorber no longer moderates the rear wheel oscillations.
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If the shock was made serviceable, can it be repaired?
Suzuki state that the OEM shock is not serviceable but a good shock absorber shop can make it serviceable, check the internals, flush out the system, and install fresh shock oil and gas.
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I do not know the exact amount but surely much less than a front suspension leg (524ml) and it does not seem to need to lose much before suspension control is lost and the pogoing starts. Suzuki does not state an oil volume or required nitrogen pressure as they state that the shock is to them unserviceable.
It is probably leaking before you realise it and initially more so during use than when sitting in your garage.
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When you go for that ride repeatedly test and bed in those new brake pads. I take it very easy until I find a quiet road and then go brakes on/off, repeat, repeat, repeat.
Glad the fault was found and fixed. I once blew the shock on a BMW GS. For the rest of the trip it was like riding a pogo stick.
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It sounds OK but can you post an image?
A cotter or split pin should not be unduly affected by brake temps.
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I brightened up the pic for a better look. IMO no issue there.
Heat will not be an issue on the cotter pin.
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All manner of critical items on vehicles and machinery use cotter pins. They are most likely on your car wheel bearings, or steering.
My Versys rear axle has one through the castellated nut.
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