REVIEWS DEALS BIKESHOPS TRAILS

new fork for Sx Trail 08

981 Views 3 Replies 3 Participants Last post by gladegp, Aug 6, 2010

codename47

Discussion Starter · Jul 14, 2010

Hi,
My frame is XL 2008 SXT, at the moment I'm with Marzocchi 66 RC2X 2007 180mm travel, but I want to try something new. The problem is that I'm 260lbs(118kg) without gear, so I cannot decide between air and coil.
I'm thinking about:
Fox Vanilla 160 2008.
RS Lyrik 170 coil/air?
New Fox Float 180 that can be adjusted to 170mm internally.
What can you recommend me?
Thanks.

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blender

· #2 · Jul 14, 2010

at your weight, i would definitely go with coil!

I am a fan of the Fox 36Van, but the Lyric is no slouch either.
Depending on your riding style, you might also consider a coil Totem, it'll be much stiffer than the 36 or the Lyric, which might be a nice benefit for your size.

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codename47

Discussion Starter · #3 · Aug 5, 2010

Hi,
according to: http://www.pvdwiki.com/index.php?title=Suspension_Fork_Geometry_Info
and to that calculator: http://www.velobase.com/Resource_Tools/ForkCalc.aspx
with Fox Vanilla 160 / 37mm offset, trail will be
Head Tube Angle: 66.50 degrees
Fork Rake (offset): 37.00 mm / 1.46in
Tire Radius: 329.13mm / 12.96in
Trail: 102.76mm / 4.05in

Marzocchi 55 160mm / 44 offset, trail:
Head Tube Angle: 66.50 degrees
Fork Rake (offset): 44.00 mm / 1.73in
Tire Radius: 329.13mm / 12.96in
Trail: 95.13mm / 3.75in

Marzocch 66 180mm, 44 offset:
Head Tube Angle: 65.64 degrees
Fork Rake (offset): 44.00 mm / 1.73in
Tire Radius: 329.13mm / 12.96in
Trail: 100.72mm / 3.97in

and with the new Fox 2011, 180mm / 42mm offset:
Head Tube Angle: 65.64 degrees
Fork Rake (offset): 42.00 mm / 1.65in
Tire Radius: 329.13mm / 12.96in
Trail: 102.92mm / 4.05in

i.e. I'll have the same trail with 160 fox 36 and with 180 fox 36.
Which is better - slacker head angle and bigger wheelbase but more offset, or steeper HA and compact wheelbase?

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gladegp

· #4 · Aug 6, 2010

codename47 said:
Which is better - slacker head angle and bigger wheelbase but more offset, or steeper HA and compact wheelbase?

This of course depends on if you want it more trailbikeish or more freeridish. Slacker HA with longer wheelbase equals a more stable bike in high speed, plusher, stable steering but also less manuverable in tight stuff and less uphill-friendly.
I've got mine with a 180 mm Rock Shox Domain and I'm very happy with that. But then again I've also got a 140 mm trailbike for the longer flatter rides.

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