My Rear Shock Is Leaking Air, Should I Service It Or Replace It? | Ask GMBN Tech 283
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- čas přidán 4. 06. 2024
- Welcome to another instalment of #askgmbntech where Rich and Owen will be digging into some of the most tech-heavy questions you have been asking! Want to get your question on the next episode? Drop those comments using the hashtag #AskGMBNTech down below 👇
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⏱️ Timestamps ⏱️
00:00 - Intro
00:27 - Why has it taken so long for the industry to realize cranks should be fit to inseam??
01:43 - I'm going to the Alps in my van. I store my bikes under the bed, but can't fit a downhill fork under there and don't want to raise my bed any more! Can I deflate the fork to sleep?
04:17 - My 4 year old RockShox Deluxe RT is suddenly leaking air for some reason and the lock-out isn't working anymore. Should I get it serviced for $80-120 bucks. I can find newer and better RockShox shocks on for example Ebay for around $150/200?
06:56 - I’ve got a virtual (vertical) bike rack, when driving the front wheel spins. I’ve had multiple people stop and say it’s ruining my bearings. Is this true?
08:24 - Hey guys! I have a regular 18-tooth ratchet on my DT Swiss hubs and I'm thinking of upgrading. Will the 36t or 54t option "damage" my rear suspension performance? PS: It's a 130mm rear travel trail bike.
10:58 - I have a DT Swiss EXM dual-position fork, are position adjustments coming back? It's time for a service, and it used to be bike shops here didn't do in-house for DT Swiss and sent them to DT Swiss headquarters, but now DT Swiss said they don't service forks that old anymore (15 year old). Is that already the end of the fork?
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Do you have a question for us? Use the hashtash #AskGMBNTech with your comment for a chance to be featured on an up and coming show!
I want to see Owen out on the trails!!! Who's with me?
Apparently, it might be happening soon on GMBN 🤐
@@gmbntech I'm already ready!! Staying tuned to the channel...
I'm ready to see him wear his sock hat with the top cut out to see that glorious growth. Maybe as a man bun or a Muay Thai warrior!
Send it!
About deflating forks for transit, the older ones with open oil bath tend to leak without air pressure, compressing the seals.
Why transit?
Plane? Polluting environment??
Why not stay at home and explore your surroundings?
@@davidgeiger8620 car and train are considered means of transit as well fyi. Besides, there is also postage of second-hand sold bike parts. You wouldn't want to spray suspension oil all over delivery cab and post office, would you?
#AskGMBNTech
Hi guys at GMBN. I've got a couple of questions about suspension fork. 1. How come mtb forks aren't built like motorcross forks where they don't require frequent maintenance such as every 50 hours of riding. I could be wrong but I don't see motorcross bikes having their forks regularly serviced such as mtb forks. 2. When one services their MTB fork, one has to change the oil in the damper. I've got a fox 34 and while I can't remember of the top of my head the grade of oil that needs to be used, I remember seeing the same grade of oil used in motorcycle forks. Question is could you use a motorcycle suspension oil with the same grade in your MTB fork? Reason being is that there are a lot of motorcycle workshops where I live compared to mtb shops and it is easier to get fork oils for motorcycles vs specialty fox fork oils
YES, ridiculous service intervals on MTB shocks and forks are proving to me one thing, they either want this ... Or they can't get decent engineers and materials.
You know what's the answer...😂
2.5w oil with low sulfur, like Lucas S1 or even some chain part store brands will do for oil, don't be that fool 😂
I had my Fox DPS blow out after 1 month. It wouldn't hold air. My bike was under warranty, and Fox asked my LBS what my weight is. When they realized I'm at 230lbs they set it up for my weight. It feels better than my Fox Factory Float X. Fox said they make them for the average rider not heavy riders. So if you're a heavy person have it set up for your weight. It's a game changer!
I have a 99 Stump with a Manitou fork and luckily, the elastomers, original, are still in great shape. I have found replacement elastomer but the rest of the parts cannot be found. Already replaced the Vanila shock, couldn't find seals for it. Hope to keep this fun little bike going till I stop too.
I broke 5 ribs on New Year’s Day from a pedal strike on a root. I don’t blame the cranks or low BB. I got lazy at the end of my ride. The root that I tore out of the ground, now lives in my front yard.
I have a newer Spectral 125 (125mm of rear suspension). I upgraded my DT Swiss 350 hub to 54t of engagement and I don't notice any pedal kickback. I also have a Berd Spoke wheelset with an Industry 9 Hydra hub which has a ridiculous amount of engagement points, I could feel a small amount of kick back when riding really aggressive stuff. But it certainly wasn't enough to matter in my opinion.
"I'm not gonna name the presenter"
I think most regular viewers know exactly who 😂
This is the kind of show I like!
#AskGMBNTech The choice of casing is obviously really important when choosing new tires, but how long do tires last before the casing starts to degrade? Over time do softer compounds harden and lose their gripiness? And does riding in hot/cold climates make a difference? Or... do they last as long as there are still knobs on the tires?!
I still love a good quality springs coils on the front fork.
#AskGMBNTech
I ride a Giant Reign 1 (AL) from 2015, it came with the 2013/2014 rockshox pike and that's a 160 fork but with the turn of a dial it transforms into a 140 on the climbs.
I wonder why forks with the possibility of changing the travel on the go aren't no longer produced, this is really keeping me from buying a new bike!
I have pretty much the same shock and the exact same issue but only after 5 months of riding, albeit quite a bit of riding. I just performed a 50 hour service on it and now its back to holding air pressure again. I do have to say the service kit is fairly expensive for what it is.
Was it a difficult service or pretty straight foward?
Servicing it was super easy as long as you have some basic tools like a vise. Definitely would not pay anyone to do a 50 hour service on the shock. But to each their own.
Rockshox stuff is so easy to service, you can pick up the service kits cheap if you shop around, oils too. It's £120 for a service so I'd rather service it myself..I'd never buy fox again as they're a pain in the ass to service..If you got fox then yes I'd take it to a shop.
My bike has 180mm travel, will downgrading it to 160 front and rear effect it’s performance/geometry?
About the crank arm length thing. It's just the MTB industry. BMX has been doing short cranks for ever.
#AskGMBNTech Im 177cm tall and I have an Orbea Occam H20 2022 in size M, I feel like I have too much weight on my hands sometimes when pedaling and after adjusting my saddle height I think I could benefit from a shorter handlebar, its currently 780mm, should I cut it to 760?
Gotta Sun tour raibon rear shock 120mm It leaks air Should I fix it or buy a new one? If I do buy a new one will a 125mm shock work on it
#askgmbntech my RS Zeb made a puff sound when compressed fast like air leaking out or something, it got serviced (200 hour service) with the new seals and everything but it is still making that puffy sound. Was it serviced poorly or is my fork ready to be replaced? (The fork has 13 months of use only)
#AskGMBNTech I’ve bought new handlebar however it can only be cut down to 760mm. I normally run 740mm. Will I be able to compensate by swapping my 40mm Stem for a 35mm? The new bars are the same sweep & rise as my current ones.
#askgmbntech The anodization on the back side of my dropper has worn off completely. I service it regularly and it still functions perfectly. Is this wear normal for a 2 year old dropper? Should I expect to have to replace this soon?
#AskGMBNTech Hi team, i had a problem with one of the pistons seized on my brakes (Deore 6100). I tryed to loosen it but it resulted in damaging it so i took the whole caliper apart to investigate what happened and the other 3 pistons were cracked on the inside (oil side). How does that happen? How do i prevent it happening again
#askgmbntech my headset is creaking and I don't know what to do. I tried reducing the torque on the top cap and greaseing everything and I cleaned it thoroughly. What should I do?
And regarding the wheel spinning on the rack: Imagine the forces that make it spin, then apply them to the fixed wheel. Would you rather let them get distributed among the balls and the balls get lubricated by moving grease around, or would you rather let them press out the grease of the contact and push one-two balls constantly in one spot?
Moral of the story: fix your bike inside the car. Better for fuel economy too
#AskGMBNTech Hello! I got a budget hardtail which was labeled as 120mm however the stanchions measure only 105mm. Have I gotten scammed or is there any sort of travel spacers/limiter? It's a zoom fork but I cant find it on the web, so even if there is a limiter I do not know what oil to put back on. Also I'm looking to upgrade the tires(19mm inner) How wide is it possible to go while still riding safe(the tire blowing off the wheel)? Thinking about 2.3 inch tires.
"bring spare parts you might break when you crash" - like a second face? ;)
maybe this is my old, aching body speaking - but dont ride in a way you will crash! saves money and pain!
#askgmbntech - I'm a big fan of the ability to easily bleed shimano brakes - my question is where does the hydraulic fluid go? does it leak somewhere? Just never seen my brakes show any signs of leaks, but eventually they always need a bleed....
This is the problem with mountain biking....these bikes cost thousands of dollars...you only get a couple months before they break. Also - you can get FOX shocks for a truck for the same price as some of these little bike shock !!!! Make it make sense.....
#askgmbntech What is the best way to identify if the cassette needs replacing?
Had the same thing happen with my RS-1. LBS sent it to the factory and they no longer service them :(
That's a shame! Were you able to get it serviced anywhere?
@@gmbntech I found some offerings online but ended just buying a new bike :) due to the cost (~$2k).
I know the RS-1 gets a lot of flak on the forums but I loved it.
#askgmbntech hey, are the 2020 ibis mojo hd4 frames any good
On the last guy with the fork.... my 2009 Stumpjumper Fox Talas RC (adjustable on the fly travel fork) died. I bought a modern RockShox Judy with the axle to crown that was close to what the old fork had in my prefered travel. It is straight steerer and bolted right up. it is a 27.5 fork, not a 26... but the fork bridge only sits about 3/4 inches higher, so it doesn't even look odd now that I am running a 2.2 instead of 1.9 front tire. Done and Done.
Service it. Buy an extra used shock as a temporary replacement to keep riding while you wait for it's return. You're welcome.
That's a good way to keep riding but not the most cost effective solution 🤔
@@gmbntech Long term it is. i still have a backup shock in a parts drawer. It's been there 8-10 years.....Again, you're welcome.
I've had mixed opinions on getting shocks/forks serviced.
I've sent Fox forks to TF Tuned previously and was completely happy at the service. But, just a couple of years ago I sent a Fox shock I had on my Specialized Big Hit for a service as it leaked all the oil out. Got it back from TF Tuned and it was basically ruined. You couldn't adjust the spring collar without using a pipe wrench, it was perfect before I sent it. I'd buy a new shock if it was me
100MPH = 160KMH ... just to be clear
Suspension service intervals are greatly exaggerated and set to sell expensive seal kits and oils. Basic lower leg and aircan cleaning can keep forks and shocks working for years. Seals in the airspring and damper work in a fairly clean and well lubricated environment and can last for years before needing replacing. Spend your money wisely!
My recommendation with leaking dampers:
Ride a hardtail😮😮😮😮😮🎉🎉
Permanent solution 👊
What’s the best option for a very infrequent dh bike ride? Tubes or tubeless? I don’t want my sealant to dry up between uses but I don’t want pinch punctures…
What are the most common causes for a leaking shock? #AskGMBNTech