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docmike
Joined: 27 Jan 2005 Posts: 630 Location: Eastern NC
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Posted: Sat Feb 12, 2005 10:49 pm Post subject: Shocking |
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My new Penske shock was on the carport floor when I got home from work yesterday
Mounted it this morning. Turns out its about 0.3 inch larger diameter than the old shock, and with the 175/65 x14 tire on the back there's a serious interference problem
Guess I'll call Penske Monday morning and se if they have a skinnier spring, but I'm kind of scared I already know the answer
Which leaves two, well actually three choices
1) space the rear wheel over to the left some more. I've already spced it over about 3/16 of an inch and am not sure I want to go farther.
2) build new shock mounts and move the shock to the right. Would have to go about an inch to clear the sidecovers etc. (trust me on a K11 you want the covers or you'll cook your thighs)
3) go back to the old shock
Any suggestions? _________________ Mike Currin
93 BMW K1100RS / EML Speed 2000
89 Honda GB 500 (6,700 miles, all original except tires)
67 Triumph 650 chopper
92 Suzuki GS500 (eldest son) |
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bmcsheehy
Joined: 22 Jan 2005 Posts: 991 Location: Massachusetts USA
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Posted: Sat Feb 12, 2005 11:10 pm Post subject: |
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That's a bummer _________________ Bill
High Performance Sidecaring... ...There is nothing "HACKED" about it.
2006 ZX-14 / HANNIGAN HP.
2011 Concourse / California Friendship III.
2016 Suzuki Bandit 1250s
1936 Ford Fordoor Humpback
www.Yankee-Engineering.com |
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Ralph
Joined: 27 Jan 2005 Posts: 603 Location: Lexington, Ky
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Posted: Sat Feb 12, 2005 11:32 pm Post subject: |
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Not 3 Mike _________________ "So Soon Old & So Late Smart" |
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swaybar2002
Joined: 26 Jan 2005 Posts: 380 Location: Central Pa.
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Posted: Sun Feb 13, 2005 6:11 am Post subject: |
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Suggestion: Make a spacer to go between the wheel and where it mounts and move the wheel. You should probably use longer bolts though.
For what it's worth,
Claude |
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docmike
Joined: 27 Jan 2005 Posts: 630 Location: Eastern NC
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Posted: Mon Feb 14, 2005 3:48 pm Post subject: |
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Been on the phone with Bruce at Penske, there are a few possiblities, have to measure a few things on the bike and call him back tomorrow. Need to know how much travel I really need???
They could rebuild it as a smaller diameter shock, but then they're limited on spring choices and can't get the right length and rate, unless I want to spend for a custom wound spring.
Quote: | Suggestion: Make a spacer to go between the wheel and where it mounts and move the wheel. You should probably use longer bolts though |
I've already did that about 3/16" to mount the 175 tire and am a little worried about going farther. _________________ Mike Currin
93 BMW K1100RS / EML Speed 2000
89 Honda GB 500 (6,700 miles, all original except tires)
67 Triumph 650 chopper
92 Suzuki GS500 (eldest son) |
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docmike
Joined: 27 Jan 2005 Posts: 630 Location: Eastern NC
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Posted: Tue Feb 15, 2005 3:04 pm Post subject: |
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Good news, am returning the shock to Penske, made some measurements on the shock turns out the rig is only using about 2 inches of shock travel. They're going to rebuild the shock using a 45 mm body and a 2 inch ID spring, that's only 6 inches long. The shorter length of the spring was the concern, the original spring was 8 inches and would compress more before the spring binds.
Should have it back by next week. _________________ Mike Currin
93 BMW K1100RS / EML Speed 2000
89 Honda GB 500 (6,700 miles, all original except tires)
67 Triumph 650 chopper
92 Suzuki GS500 (eldest son) |
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JayBoy
Joined: 26 Jan 2005 Posts: 234 Location: Lexington, KY
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Posted: Thu Feb 24, 2005 9:21 pm Post subject: |
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Any news???? _________________ Corret me if I'm wrong, everyone else does! |
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swaybar2002
Joined: 26 Jan 2005 Posts: 380 Location: Central Pa.
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Posted: Fri Feb 25, 2005 1:56 am Post subject: |
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What spring rates are you all running on the rear shock?
Do you run different rates with a swaybar than without one?
Curious Claude |
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bmcsheehy
Joined: 22 Jan 2005 Posts: 991 Location: Massachusetts USA
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Posted: Fri Feb 25, 2005 11:58 am Post subject: |
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My opinion,
If you run a sway bar you’ll end up running a lighter spring than if you didn’t.
My reasoning, the rear swing arm and the sidecar swing arm will be connected by a big spring. So you add the sway bar, the sidecar spring and the rear bike spring all work together. Not 1 for 1 but they influence each other.
This theory is completely untested and based on absolutely nothing but my imagination
_________________ Bill
High Performance Sidecaring... ...There is nothing "HACKED" about it.
2006 ZX-14 / HANNIGAN HP.
2011 Concourse / California Friendship III.
2016 Suzuki Bandit 1250s
1936 Ford Fordoor Humpback
www.Yankee-Engineering.com |
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swaybar2002
Joined: 26 Jan 2005 Posts: 380 Location: Central Pa.
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Posted: Fri Feb 25, 2005 12:11 pm Post subject: |
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bmcsheehy wrote: | My opinion,
If you run a sway bar you’ll end up running a lighter spring than if you didn’t.
My reasoning, the rear swing arm and the sidecar swing arm will be connected by a big spring. So you add the sway bar, the sidecar spring and the rear bike spring all work together. Not 1 for 1 but they influence each other.
This theory is completely untested and based on absolutely nothing but my imagination
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bILL,
I think your 'imagination' is correct. _________________ Claude Stanley
Founder: Internet Sidecar Owners Klub
http://autos.groups.yahoo.com/group/SCT/
2007
I.S.O.K Sidecar RON-DEE-VOO III ..
First full weekend in August!! Thursday through Sunday!!
Weikert, Pa ..more details coming |
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docmike
Joined: 27 Jan 2005 Posts: 630 Location: Eastern NC
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Posted: Fri Feb 25, 2005 1:32 pm Post subject: |
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I'm still waiting on the rebuilt shock.
They measured the spring rate of the old shock at 490 pounds, even before adding the sway bar I never moved it off of the lowest preload setting.
For the new shock I'm trying a 450 pound spring.
Penske says as long as I don't damage the spring they will keep changing it out until I'm happy.
I'll let you know when I get it. _________________ Mike Currin
93 BMW K1100RS / EML Speed 2000
89 Honda GB 500 (6,700 miles, all original except tires)
67 Triumph 650 chopper
92 Suzuki GS500 (eldest son) |
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JayBoy
Joined: 26 Jan 2005 Posts: 234 Location: Lexington, KY
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Posted: Fri Feb 25, 2005 7:10 pm Post subject: |
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As to the swaybar spring rate discussion. If the shocks are custom built to handle the additional weight is it possible a swaybar (anti) isn't necessary?.....OR if you have the right shocks a smaller swaybar would be called for instead? _________________ Corret me if I'm wrong, everyone else does! |
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swaybar2002
Joined: 26 Jan 2005 Posts: 380 Location: Central Pa.
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Posted: Sat Feb 26, 2005 12:00 am Post subject: |
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Yes and Yes...but... some feel the advantages of a swaybar are worth the effort regardless.
Claude |
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zentime
Joined: 22 Jan 2005 Posts: 837 Location: Massachusetts USA
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Posted: Sat Feb 26, 2005 1:09 am Post subject: |
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JayBoy wrote: | As to the swaybar spring rate discussion. If the shocks are custom built to handle the additional weight is it possible a swaybar (anti) isn't necessary?.....OR if you have the right shocks a smaller swaybar would be called for instead? |
It's really the same as it would be for, let's say a Suburban, The principal is the same as it would be for any car/truck/suv or NASCAR. Stifer shocks will reduce body roll for sure but then the ride would suffer and the wheels would tend to hop over the bumps rather than track over them. The need for them on a sidecar pretty much paralles why the're used on most vehicles. _________________ CBR1100XX/EZS
1973 MotoGuzzi V7sport
will August ever come............ |
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docmike
Joined: 27 Jan 2005 Posts: 630 Location: Eastern NC
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Posted: Wed Mar 09, 2005 1:43 pm Post subject: |
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The big brown truck stopped at my house yesterday and left the rebuilt Penske shock. Looks like it should fit this time, haven't been able to get it mounted yet.
It was a little windy here yesterday, spent all my time retrieving lawn furniture and dismantling what was left of the gazebo/screen room I put up last month for the wife's birthday present. Could have been worse, a guy about 2 miles from the house lost two of his six chicken houses and has somewhere around 30,000 dead chickens to bury.
All in all, happy to be here and have a roof.
Mike _________________ Mike Currin
93 BMW K1100RS / EML Speed 2000
89 Honda GB 500 (6,700 miles, all original except tires)
67 Triumph 650 chopper
92 Suzuki GS500 (eldest son) |
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