What do these linkages on my frame influance???

[DJ_Robbie]

http://www.farkin.net/forums/album_thumbnail.php?pic_id=9244 (http://www.farkin.net/forums/album_pic.php?pic_id=9244)
http://www.farkin.net/forums/album_thumbnail.php?pic_id=9243 (http://www.farkin.net/forums/album_pic.php?pic_id=9243)

Just wondering what the shock mount positions and the linkage mount positions as shown in the diagram mean, and actually determine and influance on the bike while riding, e.g. softer feel, higher bb etc.

I have never owned a rear sus frame before so i really have no idea.
Thanks
Rob

[kalem]

http://www.farkin.net/forums/album_pic.php?pic_id=9244
http://www.farkin.net/forums/album_pic.php?pic_id=9243

[kalem]

i could guess, but i don't know for sure.. someone will.

[DJ_Robbie]

how did ya get the pics to appear bigger, i was trying to do it when you did it for me??

[RaID]

the shock mounts at the top will alter the amount of travel of the rear wheel adn the bikes geometry
the top hole will give the shortest amount of travel with the steepest head angle and a higher BB
and the bottom hole will give you the longest amount of travel, with the slackest head angle and a lower BB



the linkage holes will adjust how progressive the travel will be

[Rik]

Also note, when playing around with bike setup, you'll most likely have to change your shocks spring rate and damping to suit. You're probably best off finding a setting that works well, and stick with it.

[DJ_Robbie]

when you say how "progressive" the travel is do you mean how hard it gets after a certain amount of travel has been used? and what would the hole towards the front of the frame do to the progressiveness?

[bazza]

ye progresivness or (however u speal ti :wink: ) is just basically your rear shock getting stiffer as you use more travel.

[DJ_Robbie]

what would the hole towards the front of the frame do to the progressiveness?

[RaID]

which hole towards the front you mean?
the one with a brown washer ring around it?

[DJ_Robbie]

if you look at the diagram, the arrows pointing to the "three linkage plate holes" the linkage is through the middle hole at the moment i.e.

(Hole)(This Hole)(Hole)

If i was to move the linkage so it went through the one more towards the front of the bike what would it actually affect??

[RaID]

that would effect how progressive the the travel would be
but cant really tell if it would make it more or less progressive

move the linkage and see how it changes the way the bike feels

[S.]

The shock mount holes will change the travel, but it looks to me like they're positioned so that they don't change the static geometry (but the geometry will change under sag, because the shock ratio will be different). The linkage holes will alter the shock rate AND geometry, the forwardmost hole will give you the steepest head angle and the most progressive rate (it does this more by making the travel softer at the start rather than much stiffer at the end - so be warned it won't be much harder to bottom). The furthest-back linkage hole will give you the most "linear" shock rate (possibly slightly falling in the end of the stroke, but I can't tell from here) and the slackest head angle.

[DJ_Robbie]

The shock mount holes will change the travel, but it looks to me like they're positioned so that they don't change the static geometry (but the geometry will change under sag, because the shock ratio will be different). The linkage holes will alter the shock rate AND geometry, the forwardmost hole will give you the steepest head angle and the most progressive rate (it does this more by making the travel softer at the start rather than much stiffer at the end - so be warned it won't be much harder to bottom). The furthest-back linkage hole will give you the most "linear" shock rate (possibly slightly falling in the end of the stroke, but I can't tell from here) and the slackest head angle.

haleluja (sp) that is alomst the perfect response!, with the info i have got now i think i understand... thanks s. and others!

[CRS01]

hey robbie, im using the same frame and havent realy sussed out exactly how much travle you get from the different holes on the linkage......get back to me if you know, iv also got this from rob crafter, i emailed him some time ago....i hope its useful.
cheers.


"There was couple of different linkages on the older DHR frames. So if you have the linkage that has the 3 holes then they will adjust the head angle of the bike, so have a play around and see what you like the best. It depends on what forks you are using as well, this adjustment will also change the BB height.There is also adjustment on the main frame linkage junction and that will change the rising rate but we have found that the best position is the middle hole but again have a play around and see what you like the best as allot of adjustments are personal.
hope this helps out.
Thanks
Robert"


ps. if u have any tips regarding this frame id like to hear them.

[No Skid Marks]

I have the other style links if anyone needs to change their head angle or BB hight. PM me if you want them $50

[MUGEN]

the shock mounts at the top will alter the amount of travel of the rear wheel adn the bikes geometry
the top hole will give the shortest amount of travel with the steepest head angle and a higher BB
and the bottom hole will give you the longest amount of travel, with the slackest head angle and a lower BB



the linkage holes will adjust how progressive the travel will be

uh, i'm pretty sure the bottom hole will give u a higher BB... :? cuz its pushing the swing arm down and straighten the top tube angle.