Want to slacken the head angle on your mountainbike but can’t afford an AngleSet? We might just have the answer for you, so read on.
[email protected] bumped into a fella called Kevin Coughlan from Dublin, Ireland who although being an Elite Downhill rider and full time student somehow finds time to run his small engineering business.
Kevin produces a wide variety of bits and bobs to customize the geometry of your bike but we were particularly interested in these off set shock bushings.
Jones reckons Vouilloz was running a similar set-up in his Zesty last year to get the geometry in order to run a longer travel fork and drop the bottom bracket.
They’ll cost you 20 Euros which is about the same price as a replacement bush anyway.
Here’s what Kevin told us:
The bushings works on 2 styles M8 bolts and M6.
An M8 bolt can run a max offset of 2mm per bushing.
M6 can run a 3mm offset. I also make diff offsets, you can get a 1, 2 and 3 mm offset so if you have a few bushes you can swap them around for different geo to suit different tracks e.g. steep, flat, rocky etc.
When fitted they make the eye to eye of your shock shorter. M8 with two bushes is 4mm shorter M6 is 6mm.
And based of the leverage ratio of your bike it will change the geo.
The average DH bike with M8 bolts a 3inch stroke shock and 9 inches of travel will get about a 0.5inch BB drop and about 1 – 1.5 degree slacker HA.
So the more travel you have with smaller shocks will make the most difference.
The bushes are made of 6082 T6 alu. This means it’s a hard surface and the type of alu is very stiff with no flex.
Hard surface means corrosion resistant and long wear life.
They are drilled and reamed to exactly 8 and 6mm holes so it gives the best possible fit on the bolt (less knocking)
Each bush is ground/sanded and polished for smoothest surface finish and lowest friction (MOAR plush suspension)
If you’re interested in a pair then contact Kevin at: [email protected]
Or give him a phone phone 00353 851331104 (bear in mind I’m in college 9 to 5 most days)
I’ll get a blog set up soon and send it on.
Stay tuned and we’ll bring you more info about Kevin and his projects in the magazine soon.