foreign
some of the fastest wheels in the world on this bike this is illegal Jimmy in what
respect UCI illegal ah okay that doesn't count then no yeah yeah we're not racing
unless Zach from the UCI comes down here years ago you may have seen people racing
TTS with a front disc wheel and where the Greg lamond is making the best time
urges on his charge in yellow that means the wheel is completely filled in and it's
pretty much the most aerodynamic and fastest wheel you can put inside a bike inside a bike
but today we're gonna put it in a bike for safety reasons they're not
used in races anymore but we're not racing so today we are putting two
disc wheels on this bike the first one and the easy one is in this box
oh it's got a tire on it
sounds good massive thanks to Dov from parkour for supplying this wheel he's a sponsor of the
channel link down below if you want to buy some Wheels I'm assuming this is a demo wheel
because this one looks like it may have had an accident this is a clincher parkour disc wheel
made of carbon and he even gave me a tire with it which makes our job nice and easy
I think people use these for like smuggling drugs or something that's what this one's been used for
don't know why this cassette is so big I just found it in a in a box 34. draw
the mountain TTS that we'll do on these wheels Max 33 tooth one too many it does
say that yeah you've lift your face Jimmy I'm just thankful I'm not riding this one
rear wheel is in this is the exciting bit the front wheel
I'm actually intrigued to see what this is like inside here
it's a cardboard wheel come on here is a arrow disc wheel cover for a front wheel which is
actually for a hand bike because you can only get them for a hand bike what is this uh giant
bike fit dots so this is made by a company called easy games and I bought this just for this video
I think maybe we can give it to Justin afterwards or something but finding a front disc wheel with
a braking surface on nigh on impossible so this was the easiest option a cover which will go over
an existing Rim brake Clincher so when you order it you have to say how deep the wheel is and then
that dictates how big the cover is and then you install it there's a lot of very odd parts that
come with this so presumably this is going to be a valve hole a sheet of circular stickers why is
that so heavy it is heavy what's the electrical tape for it's a lot of mini zip ties I hope we
don't have to use all of those oh you make a smiley face don't you does it have instructions
no and the QR code the official CTT cycling time trial rules State disc wheels or spoke
wheels fitted with covers may only be used on the rear of a machine deep section rims tri-spoke and
wheels of a similar design may be used the front wheel must have at least 45 percent of the surface
area open so what we're doing is against the rules of the CTT CTT I believe stands for cycling time
trial or trials don't quote me on this that they they're all time Charles in the UK are regulated
by the CTT I looked up the instructions of the QR code takes you to a product page and has no
instructions on we are going to use the electrical tape to stick one side of the wheel on which has
got lots of little holes in we're then going to feed the little tiny zip ties through the holes
and attach it to the spokes that side will then be solid and fixed put the other side on use the
little screws to fix the top bits together so it's fixed as one disc thing all on really solid then
use The Chins to fill in all the gaps around the edge and we have an aero disc wheel for the front
of your bike well how straight does it need to be it's just a YouTube video Jimmy I'm not allowed
to use it in CTT event so yeah I'm getting whatever I must apologize for the loud noises
outside there's a guy with a drill staring at us just drilling every time we speak do you think
it's a good idea doing this with carbon spokes
I did actually get a message from the guy from easy games saying have you tried out
the disc yet just checking you're still alive if you did laughing face laughing
face it's more aerial than not having that though presumably I I yeah because if you
didn't if it was a hole the air is going to go inside isn't that as well yeah easy gains
now there's not much space in between the braking surface and the disc will cover so they give you
this tape to seal that edge but we've got to be very careful that we don't touch the braking
surface because then if you start braking it will rip up all the tape and you'll just be a big mess
it seems to be a theme doesn't it with Rim brakes and ability to stop you're going to upset the rim
brake people Jimmy you don't want to get on the wrong side of them they'll come running after
you but then they won't be able to stop and they'll go over the edge of a cliff a lot of
the guys in my Cycling Club Kingston wheelers shout out to Kingston wheelers a lot of those
guys did TTS and a lot of people used to use disc covers instead of full disc wheels one because of
cost it's really expensive buying a dedicated disc wheel which you're only going to use on
race day and apparently a lot of the covers test extremely fast anyway so more often than not it
makes sense for consumers to use something like this which costs I think this cost me 160 pounds
170 pounds definitely not much compared to a thousand pounds this thing isn't it 162 is a
lot of money but if you were like you said if you were going to buy one of those then I think that's
what how much are they 800 quid 9000 yeah yeah I think generally this will was always around a
thousand pounds you know like if you've got this this cover are you how much are you going to be
faffing about with it like you're not really going to want to take it on and off all the
time are you but even then it's still cheaper than like you could put this on a shallow alloy Rim if
you wanted and the way it doesn't really matter no definitely not for this we're doing flat TTS
well I hope so that's pretty cool I think that's gonna be fun
well you can ride it as well and scary but fun
uh right the only thing we're not accounting for here is the front
Garmin Mount other than that just the wheels have changed seven kilos before
8.71 welcome to the next section of the video super scientific outdoor testing of the double
disc wheels it's a very windy day and we're in the pennines so testing things thoroughly
oh it climbed so well the road over there a minute ago
definitely as soon as the slightest Breeze or a car comes past
you even notice it with a car yeah you notice it with a car yeah
you compensate no your body just goes it feels like a big diversion but you're not actually going
off course that much I don't know it's ridable but see what happens when we pick up some speed though
catching up the car
see that's what I've noticed from just being next to you it's just how Twitchy your front
end is you probably you I guess you'll notice but like you're like just you know you just
naturally combat way less windy than I think it is I think we have a headwind if anything which
might be why you're fighting like this rather oh yeah it's weird I'm constantly doing this
you were doing that around the corner as well oh you probably didn't even realize I didn't notice
at all it was like a nice smooth Bend and you were just like oh yeah that was real there was a
slight sketch moment there now unfortunately we don't have the means to test properly how
much faster these wheels are versus a shallow set numerous tests have shown that a rear disc Grille
can gain 30 seconds over a deep section wheel over 40 kilometers if you would like to see that
in a future video then let me know because it can be arranged yeah that just takes a bit of
setup because you either need to be able to test outdoors with some sort of aerolab testing stuff
or take it to a wind tunnel if anyone wants to invite us to their wind tunnel for free let us
know it's pretty Chrome Jewels oh see that diamond in the top it's worth 400 million pounds wow
rest in peace there's definitely some moments where it's really sketched
usually it's when you're riding along and then you go past a gate like that
and the wind has a little chance to cut across the road and it catches You
by surprise you're just not ready for it uh so yeah our conclusion would be
I do not recommend might be faster but not worth it because you'll probably end up in a bush