My Re-Spring of the S10 ES Shock

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ballisticexchris

Guest
Alrighty guys I just installed and finished checking sag after going with the 550 Eibach spring and spacers that Stephen was so kind to sell me.

Measurements are done in full riding gear and aprox 20 lb tools and spares for everyday travel. BTW, I was shocked at how heavy the Klim Badlands gear is. Fully geared up with water bladder I'm 30 lbs over my weight in street clothes!!

Before:
Stock suspension Sag measurements with tools no panniers, raised dogbones.

1 Helmet/standard 0
Static 64
Rider 98

1 Helmet + luggage/standard 0
Static 60
Rider 95

2 Hemets/standard 0
Static 50
Rider 85

2 Helmets + luggage/standard 0
Static 46
Rider 82

After:
Sag measurements with tools no panniers, Eibach 550 spring, raised dogbones. 214 street clothes/244 geared up

1 Helmet/standard 0
Static 41
Rider 75

1 Helmet + luggage/standard 0
Static 38
Rider 71

2 Hemets/standard 0
Static 26
Rider 60

2 Helmets + luggage/standard 0
Static 22
Rider 56


Due to injury I'm unable to test but I am confident this will be a fantastic upgrade to the soft OEM suspension. A few tips when removing shock is to rotate bottom clevis almost 90 degrees and the shock will slip right out of the top as you use pryer to lift and drop wheel. Next time I'll probably remove wheel to make it easier.
 

sblissner

New Member
Joined
Oct 9, 2018
Messages
17
Location
Nashville TN
I removed the rear wheel and raised the swingarm as high as possible, once the shock and dog bones were removed. That made extraction of the shock very easy. Also place your tongue firmly in your left cheek, right cheek if left handed.
 

Grizzly

New Member
Joined
May 1, 2018
Messages
4
Location
Angus, Scotland
Hi Folks,
Well, I did the re-spring mod to the rear shock (2014 XT1200ZE model) a week ago and I'm really pleased with the results
.
I've had the bike about 3 years now and although I managed to find reasonable settings for solo riding, I struggled with comfortable settings for 2-up and 2-up with luggage. It wasn't so much a problem with decking the pegs but more to do with the rear suspension feeling "dead" and unresponsive!
I think this was due to the excessive sag causing the shock linkage to be working in the wrong area and also possibly bottoming out? - noticed the shock has a suspiciously long bump stop - which probably helps reduce the harshness of bottoming but also would tend to add to the "dead" feel??

Anyhow, I decided to go for the middle ground spring-wise and ordered the 525lb Eibach spring.
When I stripped the old spring off I found it's free length to actually be 216mm not the 213.5mm Yamaha quote.

I turned-up the adaptor on my small bench lathe - the limit of it's capacity, I would say, -but it turned out great - just took it easy.
I modified Karl's dimensions slightly - I made the effective spacer thickness 12mm to give slightly more pre-load - 18mm on the new 525lb spring (compared to 19mm on the original 430lb spring with it's 216mm length). I also changed a couple of other dimensios slightly to give a snugger fit in the spring and on the existing retaining collar (I also did not skim this collar as Karl did)
At the top spring location I used 2off 3.5mm cross section o-rings super-glued onto existing spring seat. This results in the new spring being a push fit onto the o-rings to reach the seat.
It works fine - but I think if I was re-visiting this I would try and make a more rigid adaptor collar for the top of the spring?

Once refitted it was time for some tests - and it's a massive transformation - suspension now feels much more fluid and reactive - the way I like it, and results in a much plusher ride.
I've now tested it solo several times, 2-up for a couple of longish day-trips and 2-up + luggage for a 3-day trip away with my wife - and all conditions are a vast improvement - especially 2-up and fully loaded!

Strangely, I was expecting to have to "UP" the damping settings to control the rebound on the stronger spring? - but that is NOT the case - the damping seems to work much better now - without any problems - I'm really surprised at this but that's fine!

I'm not going to bore everyone with "before" and "after" sag numbers - but for reference/comparison, my weight is 260lb and my wife is 160lb (both weights are in minimal street clothes, so a bit more in bike gear) and I think the 525lb spring has been a good choice.


Cheers.......................................Grizzly
 

Grizzly

New Member
Joined
May 1, 2018
Messages
4
Location
Angus, Scotland
Quick update on our weights!
I was over-pessimistic!!! My weight is 225lb and wife 140lb so weight in full bike gear probably 250lb and 160lb??? Cheers...............................Grizzly
 
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