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Super Cheap Aero Disc Wheel Hack | Budget TT Bike Build Part 2
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- เผยแพร่เมื่อ 8 พ.ค. 2020
- Another week has gone by in lockdown and Ollie has been hard at work on his budget super tt bike build. This week he’s making an aero disc cover for his wheels, a super low-cost way of making a massive aerodynamic gain! Maybe you could try this budget hack at home yourself!
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What did you think of Ollie's disc cover? Are you tempted to try making one? Let us know in the comments 👇
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📹TT Bike On A Budget Part 1: gcntech.co/rN
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ES_A Mistake (Instrumental Version) - Particle House.mp3
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Photos: © Velo Collection (TDW) / Getty Images & © Bettiniphoto / www.bettiniphot...
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I take a drink every time Ollie touches his hair. I’m absolutely smashed.
Bahahaaaa
The longer Ollie is on lockdown the more Yorkshire his accent is getting... Hilarious.
He's spending all his down-time watching Wallace and Gromet!
His voice reminds me a bit of Karl Pilkington.
Could be worse he could have a Gordie or Makem accent
@@petermarshall7775 or even scouse
I am waiting for it just to become a Yorkshiremen sketch. th-cam.com/video/26ZDB9h7BLY/w-d-xo.html
10:32 That mug on the edge of the table, coupled with the edge of the disc right next to is giving me anxiety issues!
the table surface looks really slippery as well for the mug.
In the same week Ollie shows people how to make a disc wheel, Mavic get into financial difficulties- is there a connection??
Well theyve been before the pandemic already, but yeah, now Ollie killed them
😂
GCN team killing this lock down! Thanks guys and keep it coming.
Came here just for the squirrel pelt, but cool bike ;)
I'm not finding any vendors accepting Red Squirrel pelts, but in the US I'm seeing quotes for $41us in black and $52us in red abs. If Ollie doesn't paint the bike, I think red aero wheels would look great, but maybe too much?
I brought a HED disc wheel when I was stationed in Japan. About 40 miles from home the wheel came apart. It was a long hot walk home. I loved the Japanese beer vending machines, make the walk more much easier.
Wow! Can’t believe I’m the first to person to make a Blue Peter comment. When Ollie said we should leave the glue to cure for 24 hours, I honestly expected “So, here’s one I made earlier.” Definitely, deserves his Blue Peter badge.
Surprised there was no Fairy washing up liquid bottle and PVA glue involved..
@@kamucho You missed out the toilet roll inner.
Should’ve used double sided sticky tape for the dishing.
Michael Gurd not cool
Graeme Obree will approve of this video.
What about using some ABS leftover to make that chainring a bit more aero? Same principle as for the rear wheel.
Can you test the difference between the magic comet and the homemade? Wondering how fast and watts will be.
No paint, just red tape over the "lo" and white tape "za" in its place
Ollie this idea rocks and shows you don't need to spend a fortune or have deep pockets thanks for making these segments have given me some idea to add to my bike collection . keep up the awesome work
New to Road cycling and have to admit GCN is one of the best and most informative TH-cam channels I’ve ever watched. All delivered down to earth and easy to understand.
But keep the original colour it looks cool.
A pair of custom cut GCN vinyl sticker would make the wheel awesome.
These videos are fantastic. I would love for you to take this bike and disc into a wind tunnel when it’s all over. 🙌
Hambini aero cheap build Vs GCN build would be cool to watch.
9:23 rip that towel and table.... Litterally lmao. Great video Ollie!!
You may not be able to see the untidy tape, but you’ll know and it will bug you every time you use it and see it. The only thing I would add is to use good quality tape and not the stuff from the middle at Lidl...
Canadian currency in "red squirrel pelts", that left a well deserved mark eh? lol
Also, I suspect after the first vid in this series, every P1 for sale on CL and ebay was sold, I know I looked.
5:20 tying two pens together looks a bit of a faff and quite difficult to get the distance just right. I'd say use a piece of scrap 2x1" timber, bang a nail through one end and drill a hole for your marking pen in the other. Should be good to within 1mm or so and easier to get a neat circle out of it.
Incidentally I didn't think CTT rules allowed shrouds but I might be wrong...
Or just a length of cardboard with holes either end. It looked as though the thread wrapped around the pen as he drew the circle and changed the radius quite a bit, you can see that it doesn't line up evenly on the rim.
Also the lip of the overlap for dishing is facing in the direction of motion, wouldn't the other direction be more aero?
Yes I am being deliberately perfectionist, everybody needs a hobby! Still enjoyed the video!
@@lgsweeting direction of motion of a point on a wheel changes as it rotates anyway
@@oj-9994 to clarify, I meant the direction of rotation of the wheel. As I'm picturing it in my head, that lip will be creating resistance and turbulence as the wheel rotates, particularly as it goes through the top half of the rotation. Possibly none through the bottom half of the rotation? I feel as though, on balance, there would be less drag created overall by reversing it. Could save vital watts in an hour record attempt!
@Alien On a Bike certainly possible, might be tough to get a smooth and even finish though. Perhaps if he used his Mavic wheel as a mould and heated the plastic on top of it? What could possibly go wrong!?
@Alien On a Bike Would've probably been doable, but at home with limited equipment the method he used is probably easiest and quickest. It'd certainly look cleaner using a heat gun, but without a good mould and even heat it'd probably turn out warped to shit and even uglier than what cutting and gluing it resulted in.
An easy way to make it look nicer even with the cut and glue method would be to stick a vinyl graphic or something along those lines on there. That'd be a good opportunity for a serious racer on a budget to increase sponsor exposure, while someone less serious could have some fun with it or not bother and just go with the rough and ready look.
Suggestion... get a couple of strips of bar tape finishing tape (maybe with Zipp or similar branding on it) and cover the seams where you glued the disc. Will be a clean finishing touch and smoothing that edge will probably be worth a watt. Or 5-10 if there is the correct branding.
Tip for cutting ABS: just score it about half way through then bend it until it snaps. On my disc cover I just tape up the radial seam with duct tape, works fine.
I'm looking forward to seeing just how far Ollie can take that hair 😃😂😂
the aerodynamic gain of the wheel is completely zeroed by the hair. and I doubt he can fit that bulk of fur into a helmet...! :D
It would actually be a muskrat pelt and a beaver castor.
Love from northof Lake Superior.
xoxo
Our red squirrels are a fraction of the size of our black ones, down here in Ottawa. Based on size, the reds wouldn't be worth much. But they are much more rare.
Is it still snowing up there? We've been getting snowfalls this week, and more is forecast overnight.
@@richardharris8538 no real snow. Up further north they got some but not next to the lake
Or, 1/2 cord of split dry poplar firewood.
Wow! Very well done! 👏🏽👏🏽
Love the genuine jubilation from Ollie on the DIY ☺️
A true biker and Yorkshireman at heart!
Hi there Ollie, was going to do this for my TT bike . But found out (thanks to hubby) the UCI are not happy with people making their own wheels..... and the reason why Triathletes can make and use these. But i did love seeing you doing this. Thanks
Really enjoyed this, thanks Ollie!
Within the budget focus, throw on a GCN sticker on the disk wheel. Great job Ollie! Ride to the level of your smile.☀️🚴♂️😃
I love this series! More on the cheap bike builds please!
Measuring device?
*Takes out power meter*
again:
*HYDRO DIP* [CLAP] *HYDRO DIP* [CLAP] *HYDRO DIP* [CLAP]
Ollie being a weight-weenie and aircraft... hobbyist, I'm surprised he didn't go the balsa model route of paper and dope coverings ;) :D
Sound of the disc wheel is so cool, that you don't even feel bad when someone overtakes you :)
As a South African I was really thankful that he did the conversion for me haha
love this series!!!
I don’t need to do this. I just ordered a set of zip wheels with your credit card number you showed lol
That pole is leading you a merry dance
Corona Hair style ;-) Should be new painted! (The frame)
Pretty sure the Hadron's alone are faster than with the home-made disc cover. Swiss Side is a serious company in aerodynamics. Their own wind tunnel tests put a disc wheel (a real one, tested and optimised) about 1W faster than their 800 wheel at 45km/h. Maybe at high yaw angle the homemade disc could be an improvement, but even then I doubt it with all the flaws of a DIY. Sure the disc looks cool but sorry, no massive aero gains here.
Got a link to this? Thanks.
@@DavidWard14 For the 485 to 800s comparison, their own webpage has a lot of available data (compared to other big companies out there). Pick a model and scroll down the data. And regarding 800s vs disc, no written data but if you're more interested, have a look at their youtube channel and their "Swiss Side live aero workshop", 34min in, where they talk about it. They are developing a disc wheel for years now but it's still a prototype, because its such a marginal gain for the price (they mentioned 1W at 35km/h, 2W at 45km/h).
Having performed lots of testing myself in windtunnels, on tracks and outside of the last 5 years, i would disagree. but the proof is always in the pudding. Can't wait to test it.
Absolutely brilliant content
Think the best bit of this video was how genuinely happy Ollie was with his wheel by the end of the video.
Loved it man!☺. Amazing
GCN you are getting me through lockdown with these genius presenter projects please please keep them going.
Thanks Tim, we will!
Hello chap . this video is awesome . very encouraging
Olly is like the bob ross of bike building
For one moment I thought Ollie was going to use the contact adhesive as a form of lockdown hair gel.
nah. wouldn't hold that hairy crown of his..
loved it, thx mate
Great video Ollie, for a homemade disc wheel, that looks pretty slick! Although your ‘Yorkshire tea’ looks a little suspect 🧐
#askgcntech Have you considered using the covering they use on wooden airplane wings for a covering for a aero wheel covering? Attach with adhesive tape and with the heat shrink properly , would make a perfect fit and finish. It comes in all different colors and is paintable. Easily repaired or replaced? Just an idea.
Expensive that sheet. What about polycarbonate sheet as that light and strong. The ABS is more pliable i suppose and heat moldable. Contaçt is ok for cooler climates but can come apart in 40c plus. Epoxy might be an option. Lets see the results now. Paint job look fine. Oh i didn't know thaf Canadian squirrels were red thought they were all grey.
Love the hair!👍👍
Nice work! A trick with the contact adhesive, mask a line on the edge of where you want it to go... makes it really tidy! Done properly the electrical tape over the seam will only tidy it up... it won't add any strength to the glued seam - and done properly that will be bombproof!
Ollie should wear glasses more often. Great look :)
"When your lockdown hair keeps getting in your face, we're gonna use, the Stanley Knife"
Don't give him ideas!
@@gcntech guys where did you buy the ABS plastic sheet? Online? where? TIA
You stuck the disc together with out dishing it to the Cone shape needed. You just re glued it flat?
Ian Tarry was only dished slighty
Same principle as drawing the circle. Get the centre and your string length correct and attach it to your blade. That way you'll get a perfect cut out.
And just to be really picky I'd have had the overlap in the opposite direction on the drive side. To hopefully smooth out the air flow
I noticed that too, gotta be costing a Watt or two that!
Thumbs up for accurate Canadian currency calculation.
Nice mate, looking forward to see the final result! Cheers Ollie, keep the good work
Even that Cervelo is over my budgeit
Yea, I was hoping for a little less of a 'buy a high performance bike that's a couple years old' and more of an actual low budget build - like how to adapt an old road bike to a TT position.
Yeah. Can I do this to my 500 dollar decathlon store bike? I'd look rather daft I imagine.
Does the seam overlap direction matter? I would think you'd want to compensate for the spin of that seam against the air flowing past.
Come on Ollie! You missed an opportunity. Should have said “Enough of my yacking, it’s time to get hacking.”
I have been doing this fir a few years on my TT trike, the electric tape will curl up where it has been stretched maybe not on the first ride or two but it's bl**dy annoying when you spot it half through a 25. I now use shorter lengths of gaffer tape and cut a slight curve in them. not so nice looking but more trouble free.
I installed the app just so I could vote in the poll to not repaint the bike, unfortunately I couldn't find the poll. Whatever happens, the bike is looking awesome!
Sorry you couldn't find the poll! We'll have a look at how to make them more visible!
totally doing this to my fixed gear, that only gets ridden to the grocery store and back. fastest bread runs ever coming up!
Canadian Red Squirrel Pelt.... Hahaha im dying 2:54
That turned out really good!
Good vid as always guys BUT Ollie be careful of how much of ya credit cards you show to the camera!!!!!!! Oh and contact glue I always thought you let it go tacky them press together? And fold the plastic the correct way to get a trailing edge not a leading one, more aerodynamic (ok only a bit) lol PS nice bike, would look better painted imha
How about using a reflective plastic? They originally called bicycles safety bikes. Put reflective wheel covers on your kids bikes. Now the entire wheel is one giant reflector. Should they have to be out at night they’re going to be much more visible to cars.
Love your videos. Get your own channel. Ha
Aren't covers illegal as they count as a fairing?
Not for British time trialling.
only in uci events
Love this series, keep 'm coming! :D
I think for the video that's in it you should go for the repaint, show Jon Cannings how it's done ;)
Windtunnel test the Cervélo vs the Orbea when you’re done.
You might need to do something about the cockpit, brakes, gears & cables, first though.
Can’t wait to see the difference.
That does look super nice, good job!
How did you tape the non-drive side sheet After doing the other one ? 😛
Haha yeah.
If Ollie was my chem teacher, I probably would have gone into that field.
There was a similar product available here in Hungary back in the day in in the 90's. They called it "air disc". It was fitted on 26" wheels and the two sides held together with litle srews.
I'd say a half paint job. Mask out the red portions and then maybe a black (or white paint) for the silver (GCN colours)?
Love the clip, but I guess you can cut the circle much more easily than measuring and building that improvised compass.( not gonna lie, impressive). Your wheel is a circle a nice spinning one...just put the pen on the inside of the wheel...spin the wheel to mark a nice even circle and just cut few cm bigger to match the edge
Might be able to get the dishibg effect without cutting it by heating it with a hot air gun on the inside face.if not try using a paintbrush for the contact adhesive.. much less mess
I was thinking the same idea. How many Celsius do you think would be the best way ? In this case we need to think perhaps about a retractation and increase a little bit the dimension ?
I work with plastics all the time.. In no way could you get an even surface without an consistent underlying form/shape.. ABS does thermoform but in this case it would concave between the spokes, like skin over a ribcage....
However, you could plastic weld the seem in a "butt" connection and polish out the seam... No overlap
I have a disc wheel cover that a friend gave me which looks pretty homemade. But it is very flexible. I wonder if when in use at speed the plastic flexing is reducing its aero performance? I wonder if a carbon more rigid wheel cover would work better?
Hi Martin, as long as the edge of the cover is well taped to the rim of the wheel and ideally the cover is well secured near the hub and to the spokes then it will be faster than not having a cover. A more rigid cover might be faster again, but we can't really comment as we haven't tested those two options side by side!
Спасибо за интересный видео,мне очень нравятся такие колеса
Ollie, you should see if you can get your hands on a GCN cap. That should help keep your hair out of your face. I think there are a few weekly competitions you can submit pictures to if you want to attempt to win one. Pro tip, sun rises or sunsets help!
Great job Ollie 💪👌
I tried this years ago, and I even used plastic screw together rivets to connect the two sides through the spokes to each other. But it was still sloppy when hitting bumps it came loose and was uneven and rattled. The whole thing weight an extra five pounds for sure. That's all the time and effort it took me to make it I was so unsatisfied would never ride that in public. Although it would work if you played bicycle polo to prevent the hammer from going through the spokes
It's two Canadian red squirrel pelts, and a flagon of ale.
I can see a sideline for you Ollie.. Ollie's arts and crafts 😂
Did he say the cassette thing to himself and then again to camera, lockdown does funny things!
His tea cup at 10:35 can spill at any moment.
What an amazing, cost-effective build, this. I would note that ABS is just one of many suitable materials for aero wheel covers, and it is far from being the stiffest or lightest of the lot. Aluminium sheet can be had for a bargain, and it is twice as stiff as ABS at the same weight, in a sheet only 40% of the thickness. Then the ultimate material is arguably aircraft-grade birch plywood, coming in a whopping 28 times as stiff as ABS, at the same weight, in a sheet 60% thicker. I'm surprised the weight weenies haven't caught on to this and scrounged up loads of gossamer-thin aircraft plywood.
Ive been looking for peoples wooden upgrades for a long time now. Ive been making small balsa aero bits whith glue. Now i want to try some of the ply youre talking about!
That's high tech cellulose composite you're talking about there. 😂
Please make a video on diy TT aero bars also
Cycling Weakly magazines make good table protectors
I just wanted to commwnt because i watched your videos with my dad. The paint job you looked at would be extremely simple. You would need to research bike paint primer and sealer. If you're still interested. For painting you would need brush and sponge brush, and masking tape will be your best friend. Red black and yellow paint. Even if you dont i like your videos and they were helpful in fixing and changing bikes in my home so thank you
Really good research Ollie, but I would point out that 13 pounds will only get you a B grade Canadian Red Squirrel Pelt. An A grade pelt will set you back 16 pounds, but maybe you were figuring VAT into you conversion.
OBVIOUSLY! haha
I was working on my own before this video popped up. For a more permanent fix that supposedly makes the 'woosh woosh' sound, you could put expanding foam into the wheel with one cover on, then sand it down once expanded and then glue the other cover to the foam. Might make it stronger too. I might do this myself but I'm just trying the covers for now.
Good luck when you have to replace a spoke or retension the wheel...
@@LucaBonato If you build the wheel well enough the spokes should outlast the rim, plus the foam will help reinforce it. And even if you need to retrue it you can if your nipples have internal screw heads. I agree though that a broken spoke may be tricky to replace but surely you could cut the foam.
You've earned your Blue Peter badge twice over
I have thought about making diy deep section wheels out of the same stuff. Something like 60mm on the back and 40 on the front. Joining the two rings in the middle would be a challenge tho.
The boy done good!
Ollie, we don't have red squirrels in Canada, just black or grey and beaver pelts are our currency. ;-)