(explosive crackling)
- What's up for this week's Ask GMBN.
We got Chris Smith in the room today.
- Yo, right.
- To help me out with some good answers, hopefully.
Right, let's get straight in there.
These questions all come from the comments section
of last week's Ask GMBN, not Dirt Shed show.
And generally using the #AskGMBN.
So, starting with Piotr Dubicki.
"Hey guys, I use mirrored lenses on my goggles.
I've gone through quite a few lenses now
due to scratches from trying to clean off mud
and rain on the trail by using the micro fiber
in your gloves."
- Often get it don't you? - Yeah.
"Any tips on cleaning mud and water off my lenses
so I don't get any more scratches?"
- Nice little tip I've got for you is actually Rainex.
It's a car product which you spray on your windscreen
to stop all that rain actually collectin' up.
If, you just give the goggles or
your glasses a squirt of that stuff,
actually stops that rain even
sittin' on there in the first place.
It just literally runs straight off.
- Never tried that, - So, it's a pretty good one.
- I would say, I used to love using mirrored lenses,
but, I used to use one sporting good company
and they were like 30 quid each,
these lenses - Good money, yeah.
- So, I didn't use 'em in mud ever
- Yeah.
- But, what I do if stuff is really muddy,
I'll actually take the lenses out, don't touch it,
- Yeah. - 'cause you'll scratch it
when it's dry and just run it under a tap
until it's really wet and just - Just really wet, yeah.
- wash it all off and then use like a towel to clean it off.
- Think about, when you're actually using those glasses,
well, obviously, when you're climbing back up
to the top of those runs, just whip 'em off and,
you know, stick 'em in a bit of tissue
or a goggle carry bag. - Yeah.
- Protects 'em pretty good as well, so, yeah.
- That's expensive business buying lenses.
- It is.
- All right, JoeyHoflandFilms has got
a Specialized Stumpjumper 29 and a Hardtail 2012 edition.
"The headset looks like it's tapered,
but it's got a Rockshox Reba Fork, which is straight."
- Mm-hmm.
- Could you adapt it to change the forks on that bike?
- Yeah, a few different options there.
The first one and the cheapest one is probably to look at
that crown race, which is the bottom part of the headset,
which sits on top of the fork.
Crown and bottom of the steerer, that you can get
in lots of different options, inch and an eighth and 1.5.
So, that'd probably be the cheapest way of doing it.
- Yeah, I think a good piece of advice
is go to Cane Creek website.
- [Chris] Mm-hmm.
There's a headset finder on there.
- [Chris] Yes.
You can measure things. - Yep.
- Look at exactly what you've got and how you can adapt it.
But, I'd say it's probably pretty likely you can adapt it.
- [Chris] Yeah.
RedSpaceBar.
"Hey guys I'm trying to get new pedals
because the ones I'm using right now
are the stock plastic ones that came with the bike.
I don't know what type of pedals to get.
I ride street and occasionally small trails
and my feet are an average size."
- Yeah, so first bit of advice is get rid of those
plastic pedals if you're riding street.
Pedals is obviously a really important
contact point in that bike.
So, swapping that around is gonna give you
a lot more confidence, especially going into those,
like, street maneuvers.
You know, a decent alloy pedal, what you thinking?
- Yeah, well, I was gonna say, actually, Crank Brothers
do stamps in, well, normal size, they call them--
- Yeah. - large.
I actually have gotten normal size.
I've got a size UK8, that's like--
- Large on mine. - a 42 or something like that.
They've actually brought them out in real cheaper,
the budget edition for the stamp one, which is plastic,
But they've got metal pins, which makes--
- [Chris] Makes a big difference.
- Yeah, the world of difference.
But, there's loads of good pedal brands out there.
that do different size pedals.
So, that doesn't make a difference.
- Think about what footwear - Yeah.
- you're combining with that as well.
Like a decent riding shoe, like a sticky sole shoe,
can make a world of difference too.
- Yep, here's a video on how to choose some pedals.
- Pedals are one of the things on a bike
that are actually taken for granted,
but they're very important to get right.
And the reason for that is the fact that they're your
major contact point, but also, it dramatically change
the way the bike rides and how you feel on that.
At GMBN we're supported by Crank Brothers
which works out pretty well for us
because they make flat pedals and clipless pedals.
So, Blake loves the flats.
Personally, I'm a clip sort of fan.
And it generally suits the way we ride.
But here behind me, I've got a whole bunch
of different pedals and shoes and I'm gonna walk you through
the best way to select the right pedal for you.
- Right, here's a good one for you Chris.
This guy, Baqpak is a BMX street rider who recently bought
a Dirt Jumper and is wondering how far he can push
a Dirt Jumper in the streets when it can't,
obviously, considering it comes
without pegs and with brakes.
- Just as capable as a BMX, I reckon.
Like, it's not more capable. - At street stuff.
- Yeah, at street stuff.
You mentioning, like, pegs, you'll probably be into
your grinds and that.
I think a while back Marzocchi actually did do a fork which
you could combine pegs with - Did they?
- Yeah, an old school one, mind.
But, there's different ways of putting pegs on as well
and there's all sorts of grinds you can do.
You have pedal grinds, chaining grinds, lot's of stuff.
There's guys like Matt Macduff and all The Rise,
those guys do loads of creative riding
basically on just big BMX, 'cause they're into
the 24 inch wheels with pegs.
- They do smooth out, obviously, the wheels
aren't real strong, but they're pretty flippin' strong,
most street wheels, now.
- Yeah, any of those guys.
- But it does smooth the stuff out, I think,
having big wheels, whereas BMX can be pretty harsh
on street stuff. - Pretty harsh, yeah.
- Right, Mitchy Macaw,
"Why do some full-suspension bikes
have rear-suspension on different spots.
For example, some are on the top tube, some on down tube
and some are close to the bottom bracket."
So, talking about different suspension designs.
Why are they different?
- It's all different for the purpose of the bike.
You see a lot more, like cross-country bikes are more
designed to be efficient for peddling,
not so designed for big hits.
Whereas, you know, the downhill bikes with like
different linkages and bigger shock leverage ratios,
things like that.
So, that's why they're
all in different spots. - That's what it's for
it's that leverage ratio graph and different designs
give you different personalities to the bike.
I would say some of it, as well, is marketing.
Is that some bikes wanna look different,
so they'll, you know, completely change it all.
It's funny, you look at something like a motocross bike,
they all look very, very similar.
- Yeah - It's all the same
swing arm, linkages, but mountain bikes, slightly different.
- Yeah
- Okay, MarcelMiro.
"How do you measure rear shock travel?"
- Ooh, good question.
If you're talking about shock stroke, obviously, you can
measure that or the fitment to the bike from
like the eye to eye or the shaft stroke, as well.
So, if you measure how much that actual,
you have like a little rubber ring on the shocks.
You can actually measure how much that moves
on it's biggest hit.
You could let all the air pressure,
if you've got an air shock, the pressure,
see how much that shock actually moves.
- Yeah.
- If you're talking about rear wheel travel.
- There's different travel there.
- It's different isn't it.
- So, fork's dead easy.
There's obviously no linkature.
Whatever it travels is travel.
Actually, we're talking about rear suspension.
It's how much that rear axle moves vertically.
So, to actually get an accurate measurement of that
you could, maybe, stick something off the back
of your saddle above the rear axle,
but I don't think it's gonna be very accurate
to work like that. - That's really hard, yeah.
- Best way, really, is just to Google it because all
suspension mountain bikes you're gonna be able
to find that information on the web, I would've thought.
- Yeah, definitely.
- Measurement not that simple.
Iron Ore.
"I want to learn some more trials skills
and I'm finding it very difficult."
- It is difficult, ridin' trials, I am crap at it.
You know that.
"Would buying a trials bike speed up the learning curve
and then would the skills roll over to the other bikes
or should I stop making excuses?"
- Well, trial as Don said is a really hard skill to master.
A lot of different bikes out there.
The 26 inch bikes that tend to be mostly on the market now
are more aimed at like competition style trials,
which means a lot of back wheel, hopping around
like a pogo stick everywhere.
They're really bad, well, hard not bad, but they're hard
to ride on anything apart from the back wheel.
So, if you are learning trials there,
they are quite hard to get on with.
I'd look for like a older school, 26 inch bike
Or a lot of the 24 inch bikes now.
- Yeah.
- You know, like Danny Mac rides, are more designed
for like streety stuff and they're more,
they would make trials more accessible,
but you've got like the 20 inch bikes as well,
which is more like big BMXs with fat tires.
- Pretty specialist. - Yeah.
Really lightweight, but again they're quite hard to go.
I think, like the 24 inch would be your best bet
and that would relate closer to a mountain bike.
- I've seen you do plenty of trialsy stuff on
a Dirt Jump Hardtail. - Yeah.
Yeah, it depends what level you're gonna do it at.
If you're just learning those basic trials techniques
and as Don says, a normal sort of Hardtail Dirt Jump bike
would suffice for that stuff, as well as a normal
Trail Bike, you can do all that stuff on, full-suspension,
but it does make it harder.
- Yeah.
- So, if you are looking to get into it, I think
a 24 inch trials bike would speed up that learning process.
- It totally crosses over.
There's plenty of trials riders, push bike and motor bike,
people like Warner, Petey, - Yeah, yeah.
- who do that really well and are really really good
on a mountain bike because of that.
- Definitely that trials backbone gives you mega-skills
out there no matter what riding.
- Yep.
Check out this park bench trials challenge.
- I've got an idea.
Let's do some challenges.
- Okay. - Okay?
- Challenges are good, yep.
What we got?
- That.
- What, this?
- This is the only obstacle we're allowed to ride.
Let's call it the bench challenge.
(light music)
There you go.
That's super trialy.
- [Man] Hang that out.
Get yourself ready.
(wheels squeaking)
- Oh!
- [Man] Hey, dude, you got it.
- Bloody hell.
Well, that's it, that's a good challenge.
Sure tests your nerves, I tell ya.
- K, Ben Leach has got a question about
the new Michelin Wild Tires that come on the new Nukeproofs.
Sam Hill has been running some,
I don't know if they're the same tires, that's the thing.
- Right.
- He's asking us what we think of them.
He knows we ride Continental Tires, but have we used 'em?
I've never used them but they came on my bike
and they looked pretty good.
- Yeah, I haven't used a Michelin tire for years now,
but back when I did race - Yeah.
- they were the brand to be riding.
So, they've definitely got that heritage and knowledge
and obviously a massive tire manufacturer.
- They used to be really big in the game.
So, I used to be sponsored by Michelin
back in the early 2000s, um, with Steve Peat's help,
and I left to go to the World Rally.
- Right.
- They've completely took away their
Downhill World Cup support and now they seem to be back
on the mountain bike scene in a big way
and I know Sam Hill likes those tires.
The ones he rode felt super, super soft.
- [Chris] Did they?
- [Don] I checked 'em out on his bike check,
but I don't think that they are production tires yet.
But, they might well become 'em.
- [Chris] They're gonna be good
coming from Michelin, guaranteed.
- And if Sam was ridin' 'em
they're probably gonna perform pretty well.
- Yeah.
- We're on to the quick fire round.
I'm gonna fire some at you, Chris, if you're ready.
- Yep.
- Maik Eckert.
"Which way would be faster,
a steady and not that steep but long ascend,"
A what?
A steady but not that steep, long ascend,
"or a short steep ascend and then a long flat?"
- I'm confused already.
- I'm confused.
- Let's move on. (laughs)
- (laughs) It depends.
Josh Foster.
"So, I recently had a crash
and I'm off the bike for about two to three months.
How can I stay sane?"
- Watching videos.
Watch GMBN, watch EMBN, anything bike related.
Any videos is gonna keep you sane.
- Get into rehab.
I'm sure we've both done this.
You will love it when you get back on your bike.
So, just keep watching stuff, I reckon.
Ethan Gausch.
"Hey guys, love show."
Thank you very much.
"I've got a 2008 GTS M5 XC bike,"
I don't know that one.
"with a stock generic 110mm coil fork."
He's upgraded brakes, put wider bars, shorter stem,
rides the bike aggressively.
"Should I upgrade my fork and make the travel longer
or save money while riding my bike at the moment
for a Trail Hardtail?"
- Upgrading's always like a hard thing, I think.
I think you need to look at what you're doing
and unless you're better than your actual bike
at the moment, I wouldn't go spending
a load of money on that bike upgrading it.
I'd probably save that money and probably put it towards
a better bike in the end.
- Yeah, try and work out, write down how much
these things gonna cost you,
how much the new bike'll cost you,
how much can you sell your old bike for,
and then how much do you think you really want that bike
and weigh it all up.
- Yeah. - Anyway.
Okay, Alex Savvas.
"Is it worth getting a dropper post
on my beginner mountain bike?"
- I think a dropper post is one of the biggest upgrades.
I think it's one of the things that I don't usually
go without on a bike now.
You know, if I haven't got a dropper--
- They're getting cheaper,
as well. - Yeah.
- So it's worth it, I reckon.
- Yeah, definitely.
- PLM Rubio gets a lot of pinch flats when jumping.
"So I decided to ride higher pressures
but I think I'm not as aggressive now.
Is riding tubeless worth it?"
Do you ride tubeless?
- I do, yeah, on all my bikes actually, even for jumping.
I know Sam Pilgrim and Matt Jones, a few of those
like high level dirt jump guys still run tubes.
- Yeah.
- Purely because they don't like that sort of tire deforming
under extreme, sort of, take offs and things like that.
- You see it occasionally - And spinning.
- at like Crankworx, people like Rick Atkin
have flipped into mental spins
and overshoots or over rotates
and they'll just boof. - Yeah.
- It's so much force going through it.
- Exactly, yeah.
I think-- - I think they run tubes.
- Yeah.
- You often see the tube come flying out.
- Yeah, a little tire squirm, you know,
you land a rotation slightly off axis or something,
you will spurt a load of sealant out.
So, depends.
I think you need to look at your tire pressures
you're running those tubes at.
If you're running a tube, I know Pilgrim and those guys
80 to 100 psi sometimes on the skatepark.
So, big, big pressures in the tubes.
- And if you're pinching whilst jumping,
I would check out your technique as well.
You might be casing jumps.
- Sounds like it. - I mean, we've all done it.
Fire and Ice.
"GMBN would you recommend a 29er or 29 inch?"
- What you thinking, Don?
I like the 29er.
- I don't get it.
- You like the 29
- 29 inch. (laughter)
- What difference is.
Anyway, nice one.
Thanks for your questions.
As ever, leave your questions down below
and we'll try and get around to answering them next week.
- If you enjoyed today's Ask show
be sure to check out me and Blake Sampson
on our trials challenge.
That's up here as well.
- Good trial skills.
And if you want to see a video on how to learn
that rear wheel lift, click over here.
Thumbs up, if you love us trying to answer your questions
and hit that subscribe button.
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