Thomo Posted April 21, 2011 Share Please forgive me if this is a stupid question. Does one need to compensate for suspension sag when setting saddle height on a dual.?For example, if my saddle height is 70cm on a hartail, should it 71cm on a dual to compensate for 1cm sag.? Link to comment Share on other sites More sharing options...
bontie Posted April 21, 2011 Share AFAIK the distance between the BB and saddle does not change when the suspension "sags" Link to comment Share on other sites More sharing options...
Thomo Posted April 21, 2011 Share AFAIK the distance between the BB and saddle does not change when the suspension "sags" OK thanks. Just got the dual so still figuring things out. First sit on it felt as if sag moved BB and saddle closer together.Will check things out a little more over the weekend. Link to comment Share on other sites More sharing options...
NotSoBigBen Posted April 21, 2011 Share NO Link to comment Share on other sites More sharing options...
Lamber Posted April 21, 2011 Share AFAIK the distance between the BB and saddle does not change when the suspension "sags" Sorry for my ignorance- but how is it possible that it does not change? if you 'sag' your bum is closer to the ground- and the BB is fixed at a certain distance to the ground. I know the back triangle moves slightly 'backwards' when dipping- but is that enough to compensate for ALL the downward travel? just asking Link to comment Share on other sites More sharing options...
Berry Posted April 21, 2011 Share Sorry for my ignorance- but how is it possible that it does not change? if you 'sag' your bum is closer to the ground- and the BB is fixed at a certain distance to the ground. I know the back triangle moves slightly 'backwards' when dipping- but is that enough to compensate for ALL the downward travel? just asking the bb is not fixed it moves up and down with the sag Edited April 21, 2011 by berry Link to comment Share on other sites More sharing options...
jacostrydom Posted April 21, 2011 Share It depends on the configuration of the suspension system. On most the BB and Saddle is fixed to each other and only the rear triangle moves. Then your BB also sags and moves closer to the ground as your shock absorbs bumps Link to comment Share on other sites More sharing options...
AndreZA Posted April 21, 2011 Share The tubing between the saddle and the BB/cranks stays the same. Even if seat moves closer to the ground so does the BB/crank. Unless you've got a frame where the BB is attached to the rear swing arm. You never set you saddle height in relation to the ground, you set it to the BB/crank. If you can not see this then it's a wonder you can stay upright on a bicycle. Edited April 21, 2011 by Mampara Link to comment Share on other sites More sharing options...
Lamber Posted April 21, 2011 Share It depends on the configuration of the suspension system. On most the BB and Saddle is fixed to each other and only the rear triangle moves. Then your BB also sags and moves closer to the ground as your shock absorbs bumps ooooh me see! thanks Jaco and berry! Link to comment Share on other sites More sharing options...
Thumper Posted April 21, 2011 Share NOLol a man of many words! Link to comment Share on other sites More sharing options...
The Drongo Posted April 21, 2011 Share Please forgive me if this is a stupid question. Does one need to compensate for suspension sag when setting saddle height on a dual.?For example, if my saddle height is 70cm on a hartail, should it 71cm on a dual to compensate for 1cm sag.? Dude. As TNT1 once, correctly, stated - "there are no stupid questions........." Here is your sign..... Link to comment Share on other sites More sharing options...
The Drongo Posted April 21, 2011 Share AFAIK the distance between the BB and saddle does not change when the suspension "sags" Dude... Unless you are a 'roadie', i seriously hope that AFAIK is not an acronym for "As Far As I Know"!!! Link to comment Share on other sites More sharing options...
Tankman Posted April 21, 2011 Share I always thought AFAIK is a town in Afghanistan? Link to comment Share on other sites More sharing options...
brad890 Posted April 21, 2011 Share The tubing between the saddle and the BB/cranks stays the same. Even if seat moves closer to the ground so does the BB/crank. Unless you've got a frame where the BB is attached to the rear swing arm. You never set you saddle height in relation to the ground, you set it to the BB/crank. If you can not see this then it's a wonder you can stay upright on a bicycle. Link to comment Share on other sites More sharing options...
Beerboy Posted April 21, 2011 Share You will need to adjust the seat angle taking the sag into account. Link to comment Share on other sites More sharing options...
Lamber Posted April 21, 2011 Share If you can not see this then it's a wonder you can stay upright on a bicycle. Well, i do spend a lot of time on the ground- but that doesn't mean i fell Link to comment Share on other sites More sharing options...
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