Fox 40WC and DHX RC4 review
- Thread starter Steve M
- Start date
Read the link djamgils posted up. In layman's terms, the boiling/vaporisation point of all fluids is a function of temperature and pressure. Higher pressures require higher temperatures to boil, lower pressures (especially as you tend towards zero pressure) require lower temperatures for the fluid to boil. Basically what can happen in some situations is that you get localised low pressure pockets behind the main piston (if the pressure drop across the piston is equal to or greater than the overall oil pressure in the shock, which is determined by reservoir pressure) which then vaporise. This happens very quickly and often unevenly, causing inconsistent damping, and can lead to a "slap" feeling during the rebound stroke as the space consumed by gaseous damper fluid is rapidly displaced by the piston while the fluid is transforming back into a liquid form. It physically can't happen in the CCDB (theoretically could in the most extreme circumstances, but realistically impossible - certainly 100% impossible in the original Ohlins TTX40 design), because the piston pumps almost all the damper fluid through the adjusters, meaning that the pressure drop is a result of building higher pressure between the piston and the valves, rather than drawing a vacuum behind the main piston and using the fixed pressure of the reservoir (plus whatever you get from the valving through the piggyback bridge, which is definitely very significant) to force the oil through the main piston valving. The reality is that modern single tube shocks use sufficiently firm valving in the piggyback bridge to ensure that cavitation can't occur anyway.
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small correction.
I have just bought a RC4 for my sunday and have been told it dont fit ??
is this true
can I make it fit
how
I am 12 stone with my kit on what sort of set up would you suggest for my sunday.
thanks guys
if somone could email me on mbr.over35@gmail.com that would be even better
as I get lost on these chat rooms, I am a old git
is this true can I make it fit howI am 12 stone with my kit on what sort of set up would you suggest for my sunday.
thanks guys
if somone could email me on mbr.over35@gmail.com that would be even better
as I get lost on these chat rooms, I am a old git
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check the sunday thread. you have to machine the lower link in certain areas to get the reservoir and/or adjuster to clear. Apparently you have to do some hearty machine work to get it to pass, but it is doable.
I see you guys have experience with different shocks
I read somewhere that DW said that the rc4 is the best shock for the Sunday.
Do you have any experience with a rc4 on a Sunday?
I now use the original dhx5 on my Sunday
But I have made the air chamber smaller to make the shock more progressive.
Will an rc4 make the bike more progressive from the middle stroke? And still be good in the first stroke?
Thanks.
I read somewhere that DW said that the rc4 is the best shock for the Sunday.
Do you have any experience with a rc4 on a Sunday?
I now use the original dhx5 on my Sunday
But I have made the air chamber smaller to make the shock more progressive.
Will an rc4 make the bike more progressive from the middle stroke? And still be good in the first stroke?
Thanks.
The RC4 is an all-round better shock for the sunday than the DHX. I've done a similar thing with my RC4 to what you have with your DHX in order to increase the progression, and it works well (my Banshee has a leverage rate almost identical to the Sunday) to prevent bottom-out, but the big advantage of the RC4 is that you can control the mid-stroke a lot more precisely with the LSC and HSC adjusters than you could with the DHX.
Should be fine as it is unless you're either super light (<60kg) or over 100kg and really like a mega-heavy compression tune. Its range of adjustment is fairly wide in my opinion, however there is always room for improvement if you want to try custom tunes.
I also own a legend like Socket and the ratios are similar. No problems with bottoming out at all. Should be great if you are ready to grind the link for it.
I know you want to ask socket but ccdb on the sunday will have the same problems it has on the legend - it is not progressive enough.I can also buy an elka or a ccdb (for a really good price...)
and I see from reading your answers in this forum, you had them all
so..
what do you say will be the best for the sunday?
The better one will be the one you get cheaper
The Elka has nicer rebound damping, but the Fox offers better bottom-out control and arguably more mid-stroke suppleness. They are both great shocks on that frame, but they do feel different.you know your'e elka will only come with a tr450 frame
kidding, give me a call and i may have a demo shock for you to try.
kidding, give me a call and i may have a demo shock for you to try.
he lives in Israel.
the Elka shocks we sold (we="bikedeal" ,israeli distributor) and have on our demo bikes (tr450,podium,bottle rocket ...) have been very reliable till now (not to mention performance) and we carry replacement shocks for most popular sizes so ZERO riding down time should be expected (and i want to believe its the norm for every other distributor globally)
all in all ,and to be as objective as i can ,we are totally blown away by the performance of the shock every time we get to ride it (on any bike we have) ,and get the impression that customers who tried it or bought it feel the same, rather it would be on an am,fr or dh race machine !
the Elka shocks we sold (we="bikedeal" ,israeli distributor) and have on our demo bikes (tr450,podium,bottle rocket ...) have been very reliable till now (not to mention performance) and we carry replacement shocks for most popular sizes so ZERO riding down time should be expected (and i want to believe its the norm for every other distributor globally)
all in all ,and to be as objective as i can ,we are totally blown away by the performance of the shock every time we get to ride it (on any bike we have) ,and get the impression that customers who tried it or bought it feel the same, rather it would be on an am,fr or dh race machine !
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