What Happens To Pro's Bikes After They've Used Them? | Ask GMBN Tech
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- เผยแพร่เมื่อ 14 ส.ค. 2024
- Welcome back to another episode of Ask GMBN Tech, where we try to answer all your complex, scary, niche, and technical questions about mountain bikes and MTB-related tech!
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⏱️ Timestamps ⏱️
00:00 - Welcome!
00:18 - Can You Use Tubeless Sealant In An InnerTube?
01:27 - What Happens To Pro Bike After The Season Is Over?
04:29 - What Are The Best Upgrades I Can Make To My MTB?
06:52 - Should You Size Up If Your Torso Is Longer?
09:34 - Does Suspension Act Differently In The Cold?
12:11 - Should You Use Your Lockout On Tarmac?
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Do you have a question for us here at GMBN Tech? Ask away in the comments, and be sure to use #AskGMBNTech for a chance to be featured! 👇
When it comes tae durability, do 1x drivetrains last longer than 2x versions, what do you guys think?
I’ve got an ex Atherton/GT Fury which Taylor Vernon won a junior WC DH round back in 2014, bought it privately a couple of years ago. I love it and taking it to the Alps this summer to go about 1% of the speed Taylor rode it
Taylor will probably appreciate that it's still being ridden! Keep shredding 🤘
More like 30 - 40 percent of Taylor's speed . You are kidding .
@@robertmcfadyen9156 I’m old and fat so it probably will be 1%…
@@alexharris2313 I am in my 50's but my Diabetic educator made sure I lost weight . It is now so much easier for me as it was in the 90's .
@@alexharris2313 I am not allowed by my doctor to ride unsupervised as I have fallen down unexpectedly durimg previous rides . I have pseudo dementia as well as diabetes . The dementia was caused by wrestling match concussions , four of them .
I feel the same for the 4th question about sizing for different body proportions.
I've got short torso and long legs and I find it tricky to find a good size.
I feel much better on size smaller than it would be recommended by most manufacturers, but it comes with some disadvantages. What we really need are not only bacis frame sizes, but different designs for different proportions. Or a size matrix, where you could choose reach and stack individually.
In cold weather, the main issue with sluggish suspension is the damper oils viscosity... You could reduce any compression settings to soften it
Sealant in inner tubes - Slime the Green stuff is designed for this I Ran it for Years prior to going Tubeless.
5:28 Yes Deore RD is a great option. the cassette seems nice too, shifts smoother than previous gen. But please be careful with the spacer, they are plastic, don't fiddle with them, don't step on them on an uneven surface, they will snap, I tested it with my fingers I snapped them. But I wanted to install the alu spacers I had from older XT cassettes anyway. But I asked Andrew Major, he did not have any issues with the plastic spacers. But it's not fool proof.
I've not tried the cranks.
But when it comes to the brakes I would avoid Deore brakes, They have servo wave mechanism, so the reach adjustment effects the power, as reach is not adjusted on the push rod, but on the servo wave mechanism, so useless for short fingers, as adjusted for short reach the piston in the master cylinder can't be pushed far enough so the pads barely touch the rotor. Absurd.
There is no adjustment to counter act this on these brakes.
0:24 The problem with sealant inside inner tubes is that it will clog up, then you have a inner tube sealant sausage. And this will come at a cost of the ride quality and if clogged up at the valve you are screwed.
I doubt the inner tube specific sealants like Slime inner tube sealant will work better.
Also tube will might get glued to it self.
11:06 I mentioned Hydraulic brakes, but mechanical brakes can get issues in zub zero temps too, as the wires can get wet when it's not sub zero and you ride trough puddles and snow, and once it gets to zub zero then the wire freezes to the hose, so I recommend using suspension grease on the wire to prevent it. Chain lubes will work in a pinch but they will make a mess. Sram Butter/Slickoleum/ Slick Honey, (all made by Slickoleum apparently, at least Sram butter is for sure, it says so on the box) should work well. Shimano has their grease for this, but I've not tried it.
I really feel privileged about the fact that Anna mentioned my question, and I also blushed when she mentioned me. She is so lovely. So thanks GMBN team, particularly Anna and Owen. I asked that 'cos I am 1,81m tall and have longer legs than torso, so I usually choose a bike which is a size down the recommended one. It kinda worked for me, as a size L bike from Giant that I got some time ago feels a bit big for me. Thanks
She's the Nigella of the MTB world 😄
You can actually get inner tubes sealant, Muc-off sell it, I got some before I went tubeless and the inner tube sealant really does work! ✌️
11:06 Hydraulic brakes are also effected in low sub zero temps.
I noticed the Formula Cura 4 brakes with Formula Mineral oil got woody feel and more sensitive. But still work well. Same with Shimano.
I've asked Trickstuff, their brakes should work well down to -15C with Bionol. I don't know how they would do in -20C
I've read on MTBr forum that Sram brakes, Lewis brakes had issues with pistons not retracting in -20C. I don't know how much that's the piston seals and the fluid.
When its cold everything shrinks at different rates
So your lowers may shrink a bit more than the stanchions and may bind a little bit
I have this problem on my commuter bike where my frame shrinks on my suspension saddle post so much that is not moving anymore
11:06 Hello from Norway.
If it's just chilly, but not sub zero and fork feels harsh, just do a few drops and bomb down stairs for it to heat up. But this won't do anything when it's below freezing. I noticed a massive difference on a Fox 32 Evo. I no longer have this fork, but they performed poorly in the cold. Now I have EXT ERA, it performs better, but that fork feels plusher and yet supportive, but this fork I can adjust properly, but it too gets harsh. pumping up worked on the Fox fork I had to do it mid ride sometimes.
For some reason I don't have to pump it up more in -10C, but it feels harsh. Probably could drop the pressure some more, but it won't get rid of the harshness, as that's the damper fluid.
5:57 I've tried Sun Race cassettes, they are junk. Here is my experience:
bent teeth, bent cogs, sharp edges on ramps and teeth, had to use sand paper to sand all sharp edges, use flat head screw driver to bend back teeth and cogs.
I've tried several 11-46T, I've had issues on all of them.
I've tried two 11-50T both had all of these issues but they developed play in the rivets, so much I could not shift. I'm not the only one.
Lock rings rounded off . But I keep spares, so just replaced it.
Avoid Microshift cassettes as I've senn people have issues with the teeth and ramps on those.
#askGMBNTech I think it was this week or last week, there was a question about sealant for tubes. Muc-Off does make a product just for that: "Inner Tube Sealant". They also claim their standard tubeless sealant will also work on tubes. I used it the Inner Tube sealant for my daughter's bike. It's either has worked flawlessly or it hasn't need had to work at all... but she hasn't had a flat in six months.
I think the first question was getting mixed up with Slime - remember that green stuff we squirted in our inner tubes back in the day?
Slime was common in tubes in 1999 😊 remember the slime wobble?? Stuff was so heavy it would make your bike jump from off balancing the wheels lol
@@phenofinder9145 I just looked and you can still buy it and you can even buy pre-slimed tubes!
I just cut open an OEM slim tube to use as a chain stay protector, it leaked diarrhea and boogers onto the workshop carpet
Not really... They were asking if tubeless sealant could be used like the slime tube stuff basically
I have used slime sealent in tubes for 15 plus years on that time only one puncture and that was on five year old sealent.
As a member of a sponsorship syndicate , our female rider keeps the Mondraker for free after a final overhaul post - season .
I've just bought a custom painted ex-pro bike. Pity I have to wait until Friday to collect it. I will be uploading it to the Bike Vault.
Can't wait to see it! 👀
The simple solution to riding in the cold is to run coil suspension, no need to worry about gas laws and fluid dynamics.
Great suggestion!
True, although your damping is still going to feel a little sluggish initially until the oil cycles and warms up a bit.
Totally incorrect... Its the damper fluid viscosity that's making the suspension sluggish in very cold weather. Coils suspension has damper fluid and is effected the same way. You just don't need to reset your air pressure like u might with air, that's all.
@@gmbntechcoil suspension has damper oil too! So won't really help in the very cold
#askgmbntech i am going to replace my double crankset and i am wondering what i have to put on the bolts? Grease or locktite ?
I'm wondering if the UK doesn't have slime sealant for inner tubes? Obviously, wasn't quite the question, but watching gmbn for years now, just seems like they've never heard of the stuff. Maybe it's just a thing in the states
We do have slime here in the UK it seems it's used by commuters more than MTB! It might be because a lot of bike shops here don't stock it 🤙
@@gmbntech interesting! I don't blame people for not using it for mtb. It's not that good, only suitable for small punctures, and adds rotational weight. With how good tubeless has gotten, I would never want to go back to the old days of slime and mr. tuffy to protect my tubes
#AskGMBNTech
I have Shimano MT200 brakes on my bike. They worked like a treat after i installed new brake pads. But since a few days they started squeaking and loosing brakepower.
What could be the issue? I also didn‘t lubed my chain with spray oil so i dont know how they could get contaminated?!?
#AskGMBNTech
What’s up with the chia pet hair? 😂
#AskGMBNTech I want to top off my sealant but have a different brand than what's already in the tires. Is it okay to mix sealants?
#askgmbntech question... what are some of the problems with over forking your bike? example: I recently replaced my 160 mil fork with a 170 mil. In the process, I replaced the head tube cup with one that decreased the HT angle, so the resulting HT angle remains virtually unchanged (around 64.5 degrees. Other than changing my ST angle slightly and raising my bb (which BTW I lowered with the flip chip), I really don't see the downside, structurally speaking. What am I missing? Love the show, Thanks in advance.
#AskGMBNtech why don't you use torque settings for tightening spokes? I get they'd be different to try and true a wheel but assuming a rim is straight I'd like a number rather than going for tightish
#askgmbntech Are sealant cleaners like wipe out harmful to the tyre? My tyre is quite new and I would like to use a different sealant but not mix old and new
#AskGMBNTech I am thinking of upgrading to a Tubeless Tire setup for a bike-to-work commute. Should I go for cheaper options or invest on the more expensive ones?
@AskGMBNTech did anyone ever tried to experiment with different gasses in the fork/shock and of course tires ? I wonder if there are any gasses out there ( they have to not be toxic of course ) that are better than air
Dry nitrogen... But the temperature stability gain is utterly minimal.
if you have srader valves and your wheels are not tubeless ready, can you still corvert your wheels with a WHEELS MFG srader to presta valve adapter? #AskGMBNTech
#AskGMBNTech Hi, love your content! I would like to upgrade my rotors to bigger size. Right now I have shimano BR-MT410 calipers, rear rotor sm-rt10-s (160mm) and front rt-em300-m (180mm), already checked frame compatibility. I searched through shimano compatibility chart, and I'm bit confuse and lost. Can I use only these two type of rotors as charts says? I can't understand the performance gap between SM-RT30-M and SM-RT54-M, for example. I would like to go 203mm front and 180mm rear (or more?). Thanks a lot, you're awesome!
Canyon and Visma sell some ex Pro bikes.
#ASKGMBNTECH I have a question for you about the REAR WHEEL TRAVEL of my Specialized Turbo Levo (Gen2). In the Rock Shox TrailHead tunning suspension app it request the rear wheel travel in mm to set the my sag. My question is how do i now what to put in that parameter of the app. My bike is a 29er front and rear whit 150 mm of travel front and rear suspension and i weight around 100 Kg and my desire sag is 30%
Check your bike models spec. Rear suspension travel is stated in that
If any pro rider at Mondraker sees this I'm more than happy to take your old race bike off your hands doesn't matter if its XC , Enduro or DH 😅
Generally, there's much less competition in womens mtb than mens & also the top women aren't as good riders as the top men. So this is partly why men get paid more.
Great video- if you close your eyes sounds like Richard Hammond
😅 No.
First! Love you show
🎉
Do females earn the sport any money?
Unsurprisingly.. they do!
I wonder how many team riders who sell their kit on report it to HMRC as income?
🙄