Shock angle = Length question?
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Tourer
Joined: Jul 2010
Posts: 274
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From: Menomonie, WI
Shock angle = Length question?
I just bought a 07 FXD and it cam with 10 1/2" shocks on it and I want to raise the rear end about a inch so the ol lady can ride. But with the angle of the shocks, a inch longer shocks can't add a in height can they. So I am just trying to figure out the length of shocks I will need.
Road Warrior
Joined: Dec 2010
Posts: 1,629
Likes: 46
From: East Hartford, CT
When I purchased my rear shocks from Works they are 5/8" longer and the engineer said that with the angle the raised height would be 3/4".
I'm no engineer but the bike did raise up higher than 5/8"
I'm no engineer but the bike did raise up higher than 5/8"
Former Sponsor
Joined: Apr 2007
Posts: 5,360
Likes: 453
From: Davie, FL
shock length
To answer your question, remember Trig?
When you purchase a premium shock, they have a thing called rebound. Rebound can be initially look like the depressions in the road. 1/2 of the bumps in the world have rebound parts. Level road than hit a depression your bike or your wheel must go down. HD have no or very little rebound which means you and your bike falls down into a depression.
Rebound is set by spring pre-load which sets your piston inside of the shock body with room to move down. Ohlins & Penske are set for street 1/3rd of the stroke inside of the shock body. This happens when you get onto the bike with the weight that you set your sag at.
In examining a speed bump your wheel moves up the lead side and your shock compresses. Hit the crown than traverse down the lee side and the shock will extend up to the whole extended length (depending on the size of the bump) than return to the pre-set riders sag.
This means that a premium 13" shock is not a 13" shock when you sit on/operate the bike. It is up to you what length you wish your bike and what method and ride quality is for your own preferences and needs. I hope I answered your question.
When you purchase a premium shock, they have a thing called rebound. Rebound can be initially look like the depressions in the road. 1/2 of the bumps in the world have rebound parts. Level road than hit a depression your bike or your wheel must go down. HD have no or very little rebound which means you and your bike falls down into a depression.
Rebound is set by spring pre-load which sets your piston inside of the shock body with room to move down. Ohlins & Penske are set for street 1/3rd of the stroke inside of the shock body. This happens when you get onto the bike with the weight that you set your sag at.
In examining a speed bump your wheel moves up the lead side and your shock compresses. Hit the crown than traverse down the lee side and the shock will extend up to the whole extended length (depending on the size of the bump) than return to the pre-set riders sag.
This means that a premium 13" shock is not a 13" shock when you sit on/operate the bike. It is up to you what length you wish your bike and what method and ride quality is for your own preferences and needs. I hope I answered your question.
Last edited by FastHarley; May 15, 2011 at 11:03 AM.
Ultimate HDF Member
Joined: Jun 2007
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From: Richmond, VA
I just bought a 07 FXD and it cam with 10 1/2" shocks on it and I want to raise the rear end about a inch so the ol lady can ride. But with the angle of the shocks, a inch longer shocks can't add a in height can they. So I am just trying to figure out the length of shocks I will need.
Novice
Joined: Mar 2011
Posts: 15
Likes: 0
I just bought a 07 FXD and it cam with 10 1/2" shocks on it and I want to raise the rear end about a inch so the ol lady can ride. But with the angle of the shocks, a inch longer shocks can't add a in height can they. So I am just trying to figure out the length of shocks I will need.
[a] squared + [b] squared = [c] squared
Road Warrior
Joined: Feb 2009
Posts: 1,648
Likes: 5
From: Willow Spring, NC
To answer your question, remember Trig?
When you purchase a premium shock, they have a thing called rebound. Rebound can be initially look like the depressions in the road. 1/2 of the bumps in the world have rebound parts. Level road than hit a depression your bike or your wheel must go down. HD have no or very little rebound which means you and your bike falls down into a depression.
Rebound is set by spring pre-load which sets your piston inside of the shock body with room to move down. Ohlins & Penske are set for street 1/3rd of the stroke inside of the shock body. This happens when you get onto the bike with the weight that you set your sag at.
In examining a speed bump your wheel moves up the lead side and your shock compresses. Hit the crown than traverse down the lee side and the shock will extend up to the whole extended length (depending on the size of the bump) than return to the pre-set riders sag.
This means that a premium 13" shock is not a 13" shock when you sit on/operate the bike. It is up to you what length you wish your bike and what method and ride quality is for your own preferences and needs. I hope I answered your question.
When you purchase a premium shock, they have a thing called rebound. Rebound can be initially look like the depressions in the road. 1/2 of the bumps in the world have rebound parts. Level road than hit a depression your bike or your wheel must go down. HD have no or very little rebound which means you and your bike falls down into a depression.
Rebound is set by spring pre-load which sets your piston inside of the shock body with room to move down. Ohlins & Penske are set for street 1/3rd of the stroke inside of the shock body. This happens when you get onto the bike with the weight that you set your sag at.
In examining a speed bump your wheel moves up the lead side and your shock compresses. Hit the crown than traverse down the lee side and the shock will extend up to the whole extended length (depending on the size of the bump) than return to the pre-set riders sag.
This means that a premium 13" shock is not a 13" shock when you sit on/operate the bike. It is up to you what length you wish your bike and what method and ride quality is for your own preferences and needs. I hope I answered your question.
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