Last night I bought a 2017 identiti Mogul DH bike, it has a 7.5" rockshox vivid rear coil shock, I'm a bit heavy for this spring and I'm sitting around 50-60% sag lol.. As it isn't air, I'm gonna need a more harder spring. Please can someone help me with understanding spring sizes and lbs etc please?
For example 300x8.5, 8.5"x2.5" etc etc.. I just do not understand this lol
My spring currently is marked with (300X2.75) Please if someone can guide me on getting the right spring for this shock, that'd be absolutely great! (I'm about 14 stone / about 90kg in weight)
Thanks in advance!
Here's the coles notes: *Spring rate is the force (in lbs) required to compress a spring 1 inch. Example: a 450 lb/in spring will require 450 lb to compress it one inch, 900 lb to compress it 2 inches, 1350 lb to compress it 3 inches. The higher this number the stiffer the spring. *The second number shown oin a spring is its stroke this is how far it can be compressed before binding. This nuymber must be matched to your shock. If you have a 3" stroke on your shock then you must have a 3" stroke spring.
There are a number of spring rate calculators available online that you can use to guestimate what spring rate you need for your bike.
Last night I bought a 2017 identiti Mogul DH bike, it has a 7.5" rockshox vivid rear coil shock, I'm a bit heavy for this spring and I'm sitting around 50-60% sag lol.. As it isn't air, I'm gonna need a more harder spring. Please can someone help me with understanding spring sizes and lbs etc please?
For example 300x8.5, 8.5"x2.5" etc etc.. I just do not understand this lol
My spring currently is marked with (300X2.75) Please if someone can guide me on getting the right spring for this shock, that'd be absolutely great! (I'm about 14 stone / about 90kg in weight)
Thanks in advance!
8.5x2.5 is the eye to eye (length) and shock stroke (shaft travel) of your shock. This is important to know if you're upgrading or swapping out your shock in the future, you'll want the numbers there to match.
For the spring, 300 identifies 300 pounds of force required to compress 1 inch of spring. The 2.75 is the stroke of the spring. It is important that the stroke of the spring is at the very least equal to, if not greater than the stroke of the shock. If it is less, the coils will bind and you will have problems.
I'd recommend for you to go for at least a 550lb spring, depending on your riding style and local terrain. If you go for more of a poppy ride, you might want a slightly stiffer spring, or even consider an air shock as a replacement.
Whats the deal with tire inserts? Do any of you guys actually use them and of so- how come?
Are they mainly for carbon rims?
Cushcore, and love them! Using them on alum rims. It's really like giving your bike more suspension and you can run lower pressures (so more traction).
I am old school. Still running inner tubes hahaha. I do use DH inner tubes, I do not use tire inserts. Not really see the point of having them.
You've never ridden a proper tubeless setup or one with a tire insert in it if you think that way. I was a tubeless hold out for YEARS until I got on modern tubeless.
I am old school. Still running inner tubes hahaha. I do use DH inner tubes, I do not use tire inserts. Not really see the point of having them.
You've never ridden a proper tubeless setup or one with a tire insert in it if you think that way. I was a tubeless hold out for YEARS until I got on modern tubeless.
My hardtail is tubeless, but without inserts. My DH bike is none tubeless.
Tubeless nicer you can run lower psi, but more hassle when it comes to setup.