1) Suspension Adjusters: Okay, so I know that the left & right rebound adjusters and left & right compression adjuster work as one - meaning if the left side is at 5 clicks and the right is at 10 clicks, the front fork will still move as one whole piece (as opposed to the left being softer than the other).
So, my question is, why do some bikes have a left and right adjuster while other bikes (in this case the 2010 F4) only have one adjuster for the the compression and one adjuster for the rebound. One the 2010 the rebound is on the left adjuster and the compression is the right adjuster.
2) Tire pressure: I've seen some recommendations to have the front tire pressure higher than the rear or some recommendations to have both front and rear the same pressure. Why would that be when the rear tires is larger and wider than the front (and can hold more air)?
As I understand it, many newer models have different functions in either fork leg. I.e. compression in one side and rebound in the other and as they are a fixed unit when on the bike they work just the same with no noticable difference in performance.
For road use the rear is set at a higher pressure than the front. For track us it is often the front is higher than the rear. My understanding is that tyres have an optimum operating pressure which is when the tyre is 'hot'. On road use this is best obtained by having the rear tyre at a higher 'cold' pressure than the front.
On the track the speeds are generally higher and throttle use is more aggressive. Both these tend to generate more heat in the tyres (and corresponding tyre pressure increase) than road use. That is why cold track pressures are lower than cold road pressures (remembering that irrespective of road or track use the optimum operating temperature of the tyre is still the same). In addition on the track due to the aggressive throttle the difference between cold and hot pressure for the rear tyre is greater than the differences for the front hence the rear is set at a lower cold pressure.
not sure about the forks although the one fork for rebound and one for damping is not new. i think it was used in some bikes in the seventies or eighties but the manufacturers went back to the rebound/damping in each fork.
forks, if you find that say 10 clicks is to soft and 11 is too hard using both fork rebound adjusters, you can set one at 10 and one at 11 to give you 10.5, both forks will work as one.
Tyre pressure is nothing to do with the size of the tyre and the amount of air it can hold, pressure is pressure regardless of the tyre size
forks, if you find that say 10 clicks is to soft and 11 is too hard using both fork rebound adjusters, you can set one at 10 and one at 11 to give you 10.5, both forks will work as one.
Ha. Yeah, you know, I was just rereading my post and noticed how much of it didn't apply to what you were asking! Sorry about that. :bash:
I know from MTB suspension (which is getting pretty advanced these days) it's cheaper just to run one compression or rebound cartridge in a fork rather than two of each so I'm sure some of it is cost. I'd also imagine that it is easier and less confusing having to turn only 1 knob for each adjustment instead of two.
Not a problem and it's still good info. I figured cost was an issue since the 2010 F4 comes at a lower price point....and it's a little easier to adjust. I doubt I'll be needing .5 increments away.
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