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Mechanical and Technical Mechanical and technical topics, help, and discussions

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Feb 27th 2016, 01:51 PM   #1
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Honda VFR800, Husqvarna TE 610, Ducati Hypermotard 1100S
Penske shock spring swap

I have a Penske shock (I think it's the 8983 version but can't recall) and I want to swap springs. I currently have a 1200in/lb spring which feels too stiff even when it's loaded for touring and I want to try an 1150 or 1100in/lb spring. Can I simply discharge the nitrogen via the shraeder valve then unscrew the end to pull the spring off, and reverse the sequence or is it more complex than that? Is EDR the best place to refill the chamber or is there someplace closer to Vancouver that could properly refill to the correct spec?
Feb 27th 2016, 04:33 PM   #2
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Honda VFR800, Husqvarna TE 610, Ducati Hypermotard 1100S
It was rebuilt last year by Penske themselves. Btw, it's the single clicker. The VFR forums seem to indicate an 1150 spring for my weight and they said they didn't have one and recommended the 1200. The sag was set at EDR and the guy said it was right in the range. My ass is just way too sore on an all day unloaded bike ride and even a bit too sore when the bike is loaded up for a trip. The main thing is that I've got .95 springs up front which feel good but the front is softer than the rear and the bike has never felt balanced front to rear. It just feels way too stiff on the rear. Rather than stiffen the front, I'd rather soften the rear since it's not a race bike and used on crappy PNW roads.

Hypercoil has a 6A1100 and a 6A1150 and the 1150 might match up with the front better.

Edited by Flyboymedic on Feb 27th 2016 at 04:36 PM
Feb 27th 2016, 04:49 PM   #3
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Honda VFR800, Husqvarna TE 610, Ducati Hypermotard 1100S
No, it's got a reservoir with the knob on the reservoir.
On second look, you might be right but mine has a remote reservoir with the single point of adjustment.

Edited by Flyboymedic on Feb 27th 2016 at 04:58 PM
Feb 27th 2016, 05:02 PM   #4
 PeteN95's Avatar
Moderator
 
  Jan 2016
  Muklilteo, WA

  Suzuki DL1000, Honda XR650R, KTM 250 XC-W
Most shocks you just back off the spring preload until the tension is released, then slide up the spring perch and remove a snap ring, which lets you slide the spring perch and spring off the bottom.

Edited by PeteN95 on Feb 27th 2016 at 05:06 PM
Feb 27th 2016, 05:06 PM   #5
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Honda VFR800, Husqvarna TE 610, Ducati Hypermotard 1100S
Pete, you nailed it once again! That sounds very familiar from when I installed it- it's been awhile. I still need to have the hose lengthened so will still need to take it somewhere to have them do that, but I can at least swap springs myself. Thanks again!
Feb 27th 2016, 05:11 PM   #6
 Geek's Avatar
Promised a free pony!
 
  Jan 2016
  Tacoma

  Poorly
Penske shock you should be able to back off preload and take spring off, one of the upsides to them... At least the last three I've owned


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Feb 27th 2016, 05:51 PM   #7
 DocB's Avatar
 
  Feb 2016
  Poulsbo, WA

  Aprilia RSV Mille, CB77, CB750K, CB750F
FWIW when I was looking for a longer reservoir hose for a Fox twin clicker it was less expensive to buy a paintball tank hose than what appeared to be exactly the same thing marketed as a shock reservoir hose.
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