Living Jackson

Benefits of cycling

The DIY Disc Wheel Tested | Mark’s Homemade Disc Wheel Cover

– Right, there was a lot
of demand for this one, and I promised I would do it. It is time to test the
homemade disc wheel cover. (tranquil synthesizer music) Yeah, this disc wheel here is, in fact, a homemade creation by myself. And I’ve put it onto a
set of ENVE 5.6 wheels, which, I know, are a
fairly plush set of wheels. But I guess this is the kind of scenario that a lot of people find themselves in. They invest a lot of money into a good set of versatile wheels that work well for a number of races, but the thought of
investing a lot of money into an additional wheel, a disc wheel, for that occasional race
is just that step too far. I mean, disc wheels are not cheap things. So, there are a number
of companies out there that make these disc wheel covers that come in at a fraction of the cost, somewhere within 50 to 100 pounds rather than the hundreds
or thousands of pounds that you might spend on a disc wheel. But, I thought, why buy
one when you can make one? Or at least, that’s what I thought anyway. So, I had a lot of fun making this, and I have, actually, done a step-by-step guide on
how to make your own, and you can watch that by the
link on the screen, right now. But do make sure you come
back to watch this test because, today, I’m going to
be doing a number of tests to find out whether this does really work. So, the first and most obvious is a TT. I’m going to do two different
TTs, actually, a flat TT, and because I’m so impressed
with how light this thing is, I’m going to do a hilly TT as well. And then I guess we should do
some quality control testing, so I’m going to put it through its paces over some rough terrain, and maybe throw some
water in the mix, too. But in case it does all fall apart, let’s start with the TTs. (tranquil synthesizer music) OK, so I’ve got a nice flat
5K stretch here ahead of me. I’m going to start off non-disc to set the time for both the runs. All right, let’s do this. Let’s go. (tranquil synthesizer
and percussion music) Whew, that was fun. It was painful. But now, time to get that disc wheel on. (tranquil synthesizer music) OK, now that’s both tests
done on the flat TT. I’ve had a chance to check over the times. So, for the non-disc, I went five minutes and 22 seconds. With the disc, I went five
minutes and 15 seconds, so seven seconds quicker over
a flat five kilometer course. So, actually, quite a big portion of time for such a short time trail. Now, if I actually project
that over 180K distance for an Ironman, for instance, that would be four minutes and 12 seconds, which is pretty huge. But you’ve got to take
into account the fact that this was a perfectly flat TT, so that could differentiate,
ever so slightly, if you throw some hills in there, which we’re going to go
and check out in a minute. (tranquil synthesizer music) OK, it’s the next one. It’s a bit of a silly one, really, but disc wheels do get
a fair amount of stick for being a bit heavier and, therefore, not so
good over hilly courses. But this homemade disc wheel, it’s literally made out of
one-millimeter ABS plastic, so it’s really not all that heavy. In fact, without a disc,
it weighs 1.39 kilograms and, with the disc, just 2.1 kilograms, so just 71 grams more. Yeah, it really is a fair amount lighter than most disc wheels. So how does it fare over a hilly course? Well, right now, I’m heading on over to a pretty cheeky hill
that I know of around here, just a couple of kilometers down the road from that flat TT. It’s only 0.7 kilometers long
or 0.8 kilometers long, sorry, and it’s got an average grade of 7.7%, but it does kick up to a
staggering 30% towards the end. Yeah, welcome to Bath. Now, I’m going to be
starting off non-disc wheel. I’m going to try and hold
250 watts up the climb. I might have to push on a little bit, as it kicks up towards the end. Then I’m going to replicate exactly the same effort on the disc wheel. (tranquil synthesizer music) Oh, yeah, that was tough. Now, I’ll have time to
put the disc wheel on. Same again. (tranquil synthesizer music) OK, so that is both hilly TTs done, and I’ve got the times. Without the disc, it was a time of two minutes and 31 seconds. And then with the disc,
two minutes and 32 seconds, so literally one second in it, which I’m not all that
surprised about, really, because the disc is adding such
little weight to the wheel. But if you are a bit
of of a weight-weenie, maybe you’ve got a
super-hilly course coming up or some extended long climbs, a lot longer than mine, not
0.8 kilometer climb there, then it may be something
you might want to consider. But I’d say, personally, the
amount that you’re gaining on the flat, which we
proved in the previous TT, versus how much you’re losing on the hill, it’s a no-brainer, really. But that was really interesting, anyway. But, now, we need to check
the build quality of the wheel because I know a few of you
are a little bit skeptical as to how well it’s made
and how well it will last, so time for some quality control testing. (tranquil synthesizer music) (motor rumbling) OK, now, for some quality control, I am going to send this
bike and the disc wheel through some potholes,
which pains me saying that, but I guess these things happen. You can’t always avoid them. So whilst I’m not looking
forward to this, here we go. (upbeat guitar music) Oh! This is so unnatural, actually pointing it toward the potholes. One more big one. Let’s have a little look at him. Pretty solid. No tape coming off. Still nice and firm. (knocking echoing) Quality control done. Now, to get it wet, I guess. That’s the next test. Conveniently, I do have a
nice jug of water, here. So it’s very dry here today, but I’m going to chuck all this over here. Get it on both sides, just to make sure. Right, best give this a little ride and see how it holds out. See you in a while. (pedals clicking) (gears ticking) (metal screeching) Well, it has survived to tell the tale. All the tape, here, is still intact. I’ve got to say, I’m pretty happy with my little homemade creation here. Obviously, it’s not going to rival a full disc wheel production model, but it’s not bad, really,
for under 30 pounds. If you would like to make your own, don’t forget, you can
watch the video for that, a little step-by-step guide,
by clicking just down here. And if you did like today’s video, please do hit that Thumb’s Up button. And don’t forget, you can watch all our other videos at GTN
by just clicking on the globe and subscribing to the channel.

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