RST F1RST / FIRST Air Fork Service + 5 Problems You Might Come Across.
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- เผยแพร่เมื่อ 22 ส.ค. 2024
- 0:24 clean environment (very important!),
0:50 let the air out (slowly),
0:55 remove the remote lockout,
1:35 remove the hydraulic lockout,
1:50 poor the oil out (why is it smart to measure the amount of the oil inside),
2:35 remove the air assembly,
2:45 remove the rebound knob and the lower legs,
3:18 PROBLEM 1 - solved,
4:00 the lowers ready to be removed,
4:20 time for the air spring and the rebound,
4:48 slowly!,
5:00 put everything IN ORDER on the table,
5:05 PROBLEM 2 - solved, you may come upon different mounting system • OCR maintenance_0001.wmv ,
5:39 PROBLEM 3 - NOT solved,
6:05 how this fork works,
8:17 PROBLEM 4 - NOT clear,
10:08 PROBLEM 5 - do you put some oil here?
10:52 clean everything,
11:15 DON'T leave any water there,
11:50 let these rings soak up the oil,
12:20 greasing before the assembly,
13:10 remeber about the right direction (side),
13:55 poor the oil in,
14:28 assemble the lockout,
15:10 find the right tension for the spring,
16:15 put some grease on these,
17:02 pump the air spring,
IT WORKS BETTER!
0:24 clean environment (very important!),
0:50 let the air out (slowly),
0:55 remove the remote lockout,
1:35 remove the hydraulic lockout,
1:50 poor the oil out (why is it smart to measure the amount of the oil inside),
2:35 remove the air assembly,
2:45 remove the rebound knob and the lower legs,
3:18 PROBLEM 1 - solved,
4:00 the lowers ready to be removed,
4:20 time for the air spring and the rebound,
4:48 slowly!,
5:00 put everything IN ORDER on the table,
5:05 PROBLEM 2 - solved, you may come upon different mounting system th-cam.com/video/kT8weWMu34A/w-d-xo.htmlm3s ,
5:39 PROBLEM 3 - NOT solved,
6:05 how this fork works,
8:17 PROBLEM 4 - NOT clear,
10:08 PROBLEM 5 - do you put some oil here?
10:52 clean everything,
11:15 DON'T leave any water there,
11:50 let these rings soak up the oil,
12:20 greasing before the assembly,
13:10 remeber about the right direction (side),
13:55 poor the oil in,
14:28 assemble the lockout,
15:10 find the right tension for the spring,
16:15 put some grease on these,
17:02 pump the air spring,
IT WORKS BETTER!
Rebound cartridge really from PVC/plastic material (not Al)???
@@user-eo7ov7tj5v there is not cartridge its in the stanchion itself
Hi, so I paid 300 to a guy for this fork and the rebound damper shaft has a leak. Do you have any idea where to find a replacement? I swear the ROCKSHOX rebound damper replacement could possibly fit but I haven't found any information on mixing components from other forks. Any advice or information would be helpful. Thanks for the amazing thorough video on disassembly. Even with the video I still tried and failed to do it on my own, but your video was a good guide when I ran into hiccups.
@@Caddyleadz here is an old rst tutorial how to service the rebound assembly, btw put 5wt fork oil in the rebound assembly, it will improve the fork's behaviour
th-cam.com/video/kT8weWMu34A/w-d-xo.html
@@Caddyleadz I tried searching over the internet for mixing components for fork suspension but found no information about that
SIckbiker, I talked to Risseracing, the US distributor for RST, about the plastic cap on the bottom of the spring side of the Renegade which is the same cap as your First fork. It is indeed removed with a pin tool, mine are pin pliers, but mine has longer pins than the one you showed. It comes off counter clockwise.
Official information from RST about type and amount of oil:
„please use a quality suspension oil with the viscosity SAE 5W.
· 30mm stanchion: 90ml F1RST series
· 32mm stanchion: 135ml F1RST series”
Problem solved.
Obrigado.
Que pasaría si ponemos menos de esas medidas de aceite?
São 110mm de vazio e não quantidade de ML
This is the second time i've used this video to maintain my RST F1RST fork.
Mine is COMPLETELY different tho, it's a prototype, and the plastic chamber you screw to the top cap on the air side is just a loose aluminium piston on my fork.
My hydraulic lower has started leaking through the rebound adjuster, so i took out the original hollow allen bolt and replaced it with a regular bolt with locktite.
Filled the hydraulic lower up completely, then pumped the fork slightly to allow for a miniscule amout of air at the top, now the lockout is super solid, yet the damping is fast and responsive again.
I'll buy a completely different fork one day, these forks never worked from the factory, and it may be bechause they are prototype forks that shouldn't have been sold, especially on a brand new consumer bike.
I have replaced the damper lower seals in the stanchion in the plastic piece that seals the stanchion and the sliding shaft. It was pretty easy. No more leaking from the lower leg. Now I need to service the air spring, I am glad to see you demonstrate the air spring removal!
What oil did you use for the foam rings and lowers? RST also gave me a spare part to fix the leak of oil on the rebound side. But i am wondering should i put oil on the lowers just like the bigger brands like rockshox and fox.
Thanks for this tutorial. Serviced my RST first fork and it turned out quite well.
Hello, did you soak the foam rings using oil? What viscosity of oil did you use? Did you also put oil on the lowers or just grease?
Let me clear up some stuff
1 Rst tutorials are very old and they showcase an older ocr version (the one you have as a sample)
as you can see the compression assembly has some build in volume reducers and thus the lower oil quantity
The newer generation of OCR has to be filled with 125ml for RST FIRST And 135-150 for titan
As for the air assembly adding oil is not a good idea as rst forks DO NOT SEAL THE LOWER LEG WITH THE ROD on the air side so oil is just going to leak out (although adding some oil on top of the air piston makes it way smoother)
Just grease it using slicoleum or any silicone grease
The same applies to the socket fitted on the rebound assembly it is only applicable to old FIRST models
The oil you should use is 5wt instead of 10wt that they use this will transform the fork
The part you took out of the air chamber is a volume reducer very old technology following rst from the very old days
There is a very easy way to put the right amount of oil to your fork on rst ones
Step 1 Set your rebound assembly so that your travel + 1cm sticks out from the botom
Step 2 measure your ocr compression assembly length and remove it form the top of the crown
Step 3 fill with oil up to the designated point so that in normal operation the ocr compression assembly always stays submerged
Any way if you have any more questions feel free to ask me i am an RST GURU OF SORTS
How do I contact you?
Is there any possibility to increase the travel to lets say 110 or 120mm?
@@kristijansiric2648 yes 110mm by removing limiters
@@randomchannel1712 I replaced today the oil in the rebound assembly with 5wt Valvoline fork oil, will try the fork tomorrow
@@kristijansiric2648 I am eager for the results
The negative spring ist coil so pouring oil in the positive spring is no problem. It would make it more progressive which is generally a good thing
You can use a little bit of oil on your negative spring side or I've found that you can apply a small amount of light duty grease (non corrosive) around your rubber seal and it will glide smooth. Great video brother! LOVE The breakdown on how the front air suspension actually works. Well done!
Thanks alot.I just use thr Rst first air in the same day you replace your new fork.
It 's work very well just adjust the air pressure and rebound for correct weight of the rider.
Remote lock out doesn't need any more.
I would start at 90 ml and then add oil if the lockout did not work. The lockout will not work properly if the oil level is too low. Oil volume may depend on the length of travel? A longer travel model may have more volume in its chambers? Other than that thought I am mystified by the disparity between the measured volume and the stated volume. I like the design of this fork, it is pretty easy to service. Its not the best performing fork I have used, but not bad for the price. Aspects I really like: The damper isn't under pressure with some kind of bladder, and it doesn't require special tools, and is not an unserviceable cartridge unit.
"The lockout will not work properly if the oil level is too low." very good suggestion... thanks
Fill all right chamber, otherwise if you leave some air - lockout will not work.
I´ve got the F1RST (Platinum series) 26" on my retro hardtail - my fork also suffered from the heavy sticktion - i´ve serviced it recently for the first time and got rid of it. In the Platinum-series the hydraulic-damping unit is screwed onto the bottom of the right stanchion - if this screw is too tight the sticktion occurs.
www.paul-lange.de/index.php/de/rst-237.html?file=files/paullange/07_Service/04_Downloads/rst/2016%20Teileliste/FIRST%20PLATINUM%20%281.0%29.pdf
here you find a drawing of the fork - Part 5 is the hydraulic damping unit
Very Good Video on RST air fork! I have an RST Reveal that looks exactly the same as that F1rst, only more longer the travel from factory. Reading the comments to see more insight on that forks. Thanks!
Oil amount depends of many factors like:
1) wheel size
2) fork travel
3) damper design, i mean damper lenght
So you should add such amount of oil to dive off a compression damper valve. In other case you will (partial) lose lockout/compression or will get hydraulic shock.
If you have question about what to use in air spring, you just can check this with oil with different viscosity, also try with grease ;)
Also, there is two different sides on retaining. One with soft edge another sharp. So sharp side MUST abut to exit to prevent pressing out.
And why you didn't add oil or grease to the lowers???
If you have any questions just let me know.
no oil into the lowers just soak the foam rings in 15wt
@@randomchannel1712 so no oil needed on the lowers of rst first? Just oil on the foam rings?
@@carljoshuaramos5603 if it has foam rings it needs oil, if it has grease grooves it does not
@@randomchannel1712 what is grease grooves?
@@carljoshuaramos5603 older rsts were grease lubricated
Question.
Can you make the fork travel lower? Like 110 or 120 mm?
My rst fork are 1st model and the other one is like youve been working on
Your videos always useful..
Bravo!
oil quantity is specific to brand and model so only rst f1rst users will be able to tell you how much they put in.
i'd say put what was on it at first, if it performed correctly no point on changing anything, especially this much
Great video, very thorough.
How did your research reducing stiction work out?
silicone spray is my feeling...straight in the air valve
Hi, I want to know if do you need to remove the air if you are servicing the dust seals ? I have no shock pump and Im concerned if something bad might happen if I dont remove the air for servicing only the lowers
great! just got one 2nd hand. will try to disassemble too.
Very good video, thank you.
i have a question for you SickBicker im watching ur videos since the one video explaining why cheap forks aren´t that useful for All Mountain events. And i already have a good capable Hard Tail XC Bike with a good durable fork and i actually wanted to build myself a slopestyle Dirt Jumper mountain bike and the question is, is it really necessary to have a average fork like in a price of 189€ or above because im gonna drive it with 2,4 tyres 26" and 65 PSI and im only gonna use it for flowy jumps. Should i really invest for a good suspension or does a Marzocchi 110mm fork with a little bit stiff preset would do the job ?.
I have a idee for you SB!
For you cabel thats unwire -ing use a pliers and twist iT back so the Individual wires fall in the “natural “state
Great video Danny
a video how to adjust travel
your videos are awsome, very well explain and details, could you please make a video for Fox evolution series? , came with O/C cardrige, i usually search how to rebuild damper but i can only find how to change seals and oil from lower legs, will be very usefull be the first video to explain how to rebuild the whole suspension. there is not info at all. in fact fox dont bring info how much oil have to be inside the cardrige, only how many in the lower legs (30 ml in almost all models).
Which oil you take?
You used a Pozidriv (PH) bit for a Phillips (PH) srew. 🧐
Hello Man,is it possible to adjust the F1rst to 130mm or 140mm of travels? Thank you
pag 27.5 pwede 140mm sagad
@@tapramos7572 ah pwede po pala yon,maraming salamat po sir! Happy New year po
pwede sir, try ko gumawa ng vid sir kung paano ko diy inadjust
How does the RST First 29er air shox compare to X-Fusion Trace RC 34 Fork - 29" 130mm Travel Non-Boost 15x100 Taper?
inside look's like Manitou
Goodnight. how many ml of oil is in the plunger? in the hydraulic part?
Fill all right chamber, otherwise if you leave some air - lockout will not work.
Fill all right chamber with oil, otherwise if you leave some air - lockout will not work.
Hi, on mine on the rebound side the screw spin , any possible solution? thanks
where i can find dust seals and foam rings for rst F1rst?
Hi look up bike24 its a german page they sell them there
buy SKF ones please and you will thank me later
I have a problem with this fork, oil leaking through the rebound knob, I don't know how to solve this ....
Maybe you need new seals or you can try to tighten the hex screw more
@@kevinhenriksen4390 Hi man, where is the hex screw? I am also experiencing the same problem. Hope u could explain to me
have the same problem, cannot open with hex key but have to use wrench to open the rebound knob. too many problems with this fork :(
@@eugeneismanto1222 same here
@@14Goel the issue is the orings at the lower damper assembly cap you need to replace both the internal and the external one
I blew the seal on my First 30 from over pumping the air spring, how can I fix the leak now and which seal do I replace? thanks
Awesome video! I would like to know, where inside the air spring are the travel adjust spacers? I couldn't find such information for rst forks anywhere...
That should be the 9:53 "plastic thing".
@@cannondany no thats a volume reducer in order to make it progressive the rubber part at 4:30 will make it 120 if removed
@@randomchannel1712 removing all the volume reducer will make it 120?
@@xigarcia290 as i said the plastic part at 4:30 is not a volume reducer but yes it will make it something closer to 120 more like 115mm
What is the size of your dust seal mate? I am planning to buy a replacement on my rst first fork
You are realy sick...... Be the "Doctor" like rosi in motogp. Bravo.
Can you make a video like that about manitou markhor plssss
Hi can't you publish a subject regarding to painting the bike chain, thanks anyway for all You've done so far, bye
Why would you paint your chain dude???
Don't paint your chain. Just don't.
@@maxgrass8134 ikr!
Is it possible to extend the travel of this fork from 100mm to 120mm?
yes remove the part shown at 4:30 on both legs
@@randomchannel1712 oh really? And just like that? Nothing else necessary?
@@alvaroruizruiz7538 yes sir
@@randomchannel1712 Is it possible to do the same for RST F1rst 24" (increasing travel from 60 to 80mm)? Is there any downside to removing this part (hard bottom-out maybe) ? Thanks.
@@MilanKelesi yes you have to open it n check
Excelent
where did you find those transparent cartridges? i want one to play with too!
Are there's same way for rst storm air maintenance?
Make a service video of Rockshox RS-1 RL. I don`t think anybody have make a video With RS-1 RL
can you extend its travel? thanks for feedback
yes dont reinstall part at 4:30
planning to extend the travel, bro can I skip the part where you pour out the oil of the left tube. can i just work in the right tube say > remove air, remove the part at 4:30 then finish
How can you adjust the rebound on the F1RST?
My factory set up seems very hard and on fast rocky ground my bicycle gets hammered and is very painful sometimes even when my remote lockout is in the most soft setting..
What rebound is better to soften the suspension small or big and how to set it up?
Does the hydraulic fluid play any part in it or the air ?If i lower the air compression will that make the ride more plush?
Thank you..
don't know much about forks this cheap, but yes less air will make the fork more plush, but you risk bottoming it out on bigger drops or impacts.
oh and also, you want compression adjustment not rebound. rebound is how fast it comes up. you want it to be faster going down so it eats up bumps better.
chage oil to 5wt
How many size o-rings for this fork?
I have a question
My airfork single air on non driveside (coil) i cant take off the nut lower it just spin. what to do?
Put some air in the air chamber. The pressure should help to hold the shaft so lower nut can be broken free. I believe that's how I had to do it when I rode my fork down. Don't forget to purge the air before opening the air chamber.
Having the same issue but mine is in the bolt where the rebound knob is. It just spins and the bolt does not loosen
HI, I need help. I am about to buy this fork...The Remote Lockout option where you cant adjust compression......, It says the travel is 80-100-120 mm, However it doesnt say in the manual how much travel has without adjusting it. Does it come with 120 and you can reduce it to 100? or it comes with 100 and you have to enhance it to 120?? I dont get it!!!
IT CAN you just need to swap the RL remote with the SRL remote and you will have compression adjustment
the fork comes as 100 and you can increase it to 120
I can’t find this with qr and taper
17:28 *Never* put force on your fork without a wheel in it as shown here if you don't want your lowers to deform or break...
you did not show where to put back the oil and how. another mistake is you put presure to the system to remove the bottom bolt and then you instruct your audience to unthread the valve asembly without pointing out that you have to release the pressure!!
Hey Danny, can you make the same but with a RockShox Pike RC?
look at my video of rockshox revelation its the same up to lower. charger damper of pikes and lyriks is very hard to service
@@randomchannel1712 Hahaha, over 2 years too late
@@th_js i apologize sorry
@@randomchannel1712 all good man
por favor alguém me diga quantos ml tem que por de óleo? por favor estou no brasil
Descobriu amigo quantos ml, qual óleo (viscosidade) utilizar? Também estou precisando dessas informações?
5w e a câmara vazia de óleo 11cm , não é quantidade e sim a falta👍
@@aldemirprestesdossantos662 pelo que eu soube é a de 32mm 125 ml e a de 30mm 90ml de oleo 5wt.
Vou fazer o teste
Friend... do you know what is the max tire width f1rst fork?
It depends on the size of the fork. I only know that my 26" RST F1RST just fit 2.2 tire width but the 27,5" and 29" versions go bigger.
On my 26 100mm f1rst I have a kenda nevegal 2.35 tire, but when closing the wheel I have to kinda center it so it doesn't rub on the fork, other than that, it works just fine.
Oil?
Hola ! Alguien podría ayudarme ? Tengo esta misma horquilla y no me funciona el bloqueo , bajo el gatillo y bloquea pero no se queda en su lugar el gatillo se vuelve a desbloquear . Por favor alguien que me dé una mano , me está volviendo loco
hola, me pasa lo mismo, estoy buscando algún buen mecánico para que le haga un service, ¿en estos 4 días desde que formulaste la pregunta, conseguiste alguno? ¿de dónde sos? (no sea cosa que me quede lejísimos jaja). ¡saludos!
Hola, me pasa algo parecido. Blouea bien, pero no desbloquea. Creo que es el resorte mal ubicado. Si conocen algun mecanico en cordoba arg me avisn?
hello, what's the oil quantity please?
He says the service manual says to put 90 ml, but the fork had 125 ml when he disassembled it.
Fill all right chamber, otherwise if you leave some air - lockout will not work.
youre SzajBajk?
First? FIRTST!!!