I love those 40mm tires -- 20 years ago I had the most fun ever on a "hybrid" with 40mm Conti slicks. They were perfect for mediocre streets leading out to crushed gravel paths.
Interesting looking wheels. Questions. Sounds like the wider tyre will be a bit pinched at 21mm inner? Should gravel wheels not be at least 25mm internal?
I was hooked until I went to the website and they are hookless rims. I am sure I will end up on them eventually but want to use my wheels for road and gravel and having seen some blowouts on the pro tour this spring I think I’ll just take my time and see how the tire/wheel combo for hookless evolves. Sram has gone pretty much all in with Zipp so that says something.
Wait a sec…. I am building up an old 70’s road bike with 27 inch wheels. I was messing around with them this morning and… they are “hookless”. Not sure if it is the same hookless as modern wheels but just thought that was interesting.
A couple of questions for Dov, How are you conducting the CFD? are you meshing through the cross-sectional are of the rim(i.e a 2-D profile) or the whole rim itself. Second question; How do you test and validate your composite structures and what mechanical properties are you looking for in this process. I hope this isn't Intrusive I'm an Engineering Student with a love for cycling and composite design/analysis knowledge and want to apply these skills and passion into the cycling industry and want to get ahead to get a better step forward.
Hi Rafael - the CFD work takes the whole wheel system into account, so also includes a standardised hub, spokes & tyre. Ultimately we always need to validate findings in the wind tunnel as details such as the rim/tyre interface are harder to model so the CFD work is used more on the rim profile & tyre profile. For the materials side of things, the properties vary according to use. So whilst on the brake track of a rim brake wheelset we'd be looking at the heat resistance properties, whereas on a disc brake wheelset we can focus more on toughness & compliance (elasticity). Obviously never overlooking density! Feel free to drop us an email if you'd like to learn more - happy to share what we can.
completely unrelated to the video but I am fascinated by the woman behind Dov just demolishing whatever she's eating - just completely non-plussed by being on camera.
Love the channel and cinematography brotha. What camera do you use on your bike a gopro, iphone or do you just bring your main cam with you everywhere?
Hi Ryan - yes, we do currently run our tests in a steady state tunnel setup. However, as part of our technical partnership with Nottingham Trent University's Sports Engineering group, we have some ongoing research looking at flow conditions at various points on the bike. Specifically focusing on front versus rear wheels. That'll help inform our future testing - keep an eye out later this year!
My HED Ardennes (and tragically my stolen HED Jet 6 wheels) have a 21 mm internal width (25 mm outer) and I can't go back to a smaller internal. On my Ardennes are 25 mm Conti Gatorskins that measure 28 mm when mounted. I don't go much over 80 psi. I love a 21 mm internal width (says the nerd).
on rotors... the "watt penalty" - how much in calorie is that? can you just eat a banana to compensate for the energy you need to exert more? or should you really by the no/least-penalty rotor?
It is nice, tho, the collaboration between Francis and Drew, and for sure, I do want a pair of Drew's wheels. And we all ride on a whole bunch of frames and components and gear.
Videos like this break my heart. I literally just got my local to build a wheelset for me (350dt Swiss hubs with Dt 411db rims) and then discover there's Parcour. Finite resources are a bitch... On side note please do some work on the website it really does not do the company justice.
Ha Ha Ha..... research, firstly rolling resistance is a big scam because once you are over 10km, the ratio to aero is insignificant, so tubeless for better rolling resistance is ho hum.. rubbish. If you are serious about CFD and wheel performance, give them to Hambini to look at.
@@Cade_Media francis, not trying to be a smart ass here. Hambini is a aerospace engineer who works for a aviation company, that we all rely on to keep as in the air! and just recently he did a video explaining how a windtunnel is not a real reflection of how a bicycle performs on the road, this is due to swirling winds at lower speeds which a bicycle travels at. He explains the error can be as large as 40 percent related to wheels. I suggest you go and watch his channel. He also comments how the bicycle industry in many cases has no clue what they are talking about, they apply aerodynamic rules incorrectly. This guy knows his stuff! If he didn't, we would be in deep trouble when we get on a aeroplane. I suggest everyone here go check him out.
Waynos Fotos yup +1 for Hambini - if there’s a bullshit in marketing Hambini will discover it and whats more important explain why. @Francis Cade you should check out @Hambini
Put Nitrous Oxide in your tires for a laugh
Great edit and an interesting interview with Dov. This stuff just makes my days better.
I love those 40mm tires -- 20 years ago I had the most fun ever on a "hybrid" with 40mm Conti slicks. They were perfect for mediocre streets leading out to crushed gravel paths.
Interesting looking wheels. Questions. Sounds like the wider tyre will be a bit pinched at 21mm inner? Should gravel wheels not be at least 25mm internal?
And I was on time 🙌
Great video as always! i'm impressed Dov was able to keep talking with that lady nibbling his shoulder for the whole interview!!
I was hooked until I went to the website and they are hookless rims. I am sure I will end up on them eventually but want to use my wheels for road and gravel and having seen some blowouts on the pro tour this spring I think I’ll just take my time and see how the tire/wheel combo for hookless evolves. Sram has gone pretty much all in with Zipp so that says something.
Wait a sec…. I am building up an old 70’s road bike with 27 inch wheels. I was messing around with them this morning and… they are “hookless”. Not sure if it is the same hookless as modern wheels but just thought that was interesting.
A couple of questions for Dov, How are you conducting the CFD? are you meshing through the cross-sectional are of the rim(i.e a 2-D profile) or the whole rim itself. Second question; How do you test and validate your composite structures and what mechanical properties are you looking for in this process. I hope this isn't Intrusive I'm an Engineering Student with a love for cycling and composite design/analysis knowledge and want to apply these skills and passion into the cycling industry and want to get ahead to get a better step forward.
Hi Rafael - the CFD work takes the whole wheel system into account, so also includes a standardised hub, spokes & tyre. Ultimately we always need to validate findings in the wind tunnel as details such as the rim/tyre interface are harder to model so the CFD work is used more on the rim profile & tyre profile.
For the materials side of things, the properties vary according to use. So whilst on the brake track of a rim brake wheelset we'd be looking at the heat resistance properties, whereas on a disc brake wheelset we can focus more on toughness & compliance (elasticity). Obviously never overlooking density!
Feel free to drop us an email if you'd like to learn more - happy to share what we can.
completely unrelated to the video but I am fascinated by the woman behind Dov just demolishing whatever she's eating - just completely non-plussed by being on camera.
😂
Hello from Australia. Got a set of Parcours hoops too, absolutely loving them. 👍
Leg warmers and short sleeves? I got ridiculed the last time I did that! Good vid tho'. Keep up the good work. 👍🏻
Tell them to fuck right off and keep doing it.
Love the channel and cinematography brotha. What camera do you use on your bike a gopro, iphone or do you just bring your main cam with you everywhere?
Main cam!
Dope set of wheels bro. Mmm 🚀
Heh. Not sure they had a puncture on the hill.
Does Dov use laminar flow testing in the tunnel? How you looked at Hambini's turbulent flow testing protocol?
Hi Ryan - yes, we do currently run our tests in a steady state tunnel setup. However, as part of our technical partnership with Nottingham Trent University's Sports Engineering group, we have some ongoing research looking at flow conditions at various points on the bike. Specifically focusing on front versus rear wheels. That'll help inform our future testing - keep an eye out later this year!
What are the black rubber brackets/adapters spanning the fork and water bottle mounts on the Wilier?
Fidlocks!
@@Cade_Media (slappingforehead) D'oh, right, thank you! Now to test my German...
whats the backpack you are using buddy ? I have been looking for courier style bag for long time..
It's a Shimano one
Look great on those tyres very smart!
Would love to see how the tubeless tyres were set up! ;)
What bike does Chris have?
My HED Ardennes (and tragically my stolen HED Jet 6 wheels) have a 21 mm internal width (25 mm outer) and I can't go back to a smaller internal. On my Ardennes are 25 mm Conti Gatorskins that measure 28 mm when mounted. I don't go much over 80 psi. I love a 21 mm internal width (says the nerd).
Do you keep 3th bottle on the side? Good luck in Australia!
Two on the fork!
Brickwood - wood grown with the sole purpose of becoming bricks. #facts 🤯
on rotors... the "watt penalty" - how much in calorie is that? can you just eat a banana to compensate for the energy you need to exert more? or should you really by the no/least-penalty rotor?
Ahh perfectly timed for my lunch
Can"t wait to see Chris's Quirk bike again as it was a very unique build...he could get that suspension fork that some of the Quirk bikes have.
His new bike has a Lauf fork
Great vid as always - link to Parcour Wheels please
www.jam-cycling.com/collections/all/wheels
Gravel ones coming to the tuck shop soon.
I'm sure Drew at Spin On These won't be happy though ?!
I still love his wheels!
It is nice, tho, the collaboration between Francis and Drew, and for sure, I do want a pair of Drew's wheels. And we all ride on a whole bunch of frames and components and gear.
What did he say when he showed the OPEN in the cutaway?
Green wended chain (chain wax).
We were surprised that the guy locked an open like that in Clapham... Risky!
@@Cade_Media Ah, thanks man! I use Wend Wax on my Open, but I'm too afraid to leave my bike anywhere but my home or secure office.
Videos like this break my heart. I literally just got my local to build a wheelset for me (350dt Swiss hubs with Dt 411db rims) and then discover there's Parcour. Finite resources are a bitch... On side note please do some work on the website it really does not do the company justice.
Can we see all your bikes before you go! Please :)
"A 100%, aero is everything, my friend" I think I like this fella.
6:30 - My good question - Has anyone ever said Dov looks like Kris Marshall?? 😉
It’s been mentioned once or twice before...
Dov at Parcours - I loved your work in ‘My Family’ 🤣
If you have wide tyres
Run them soft
Like 30 psi max, come on
I do, these were just left at whatever the co2 inflated them to
Too bad that blond behind only had three minutes to complete her three course meal....
Knobbly!!
Narrow for gravel.
that's one noisy street
SO LOUD
Helloo
The same mainstream story from all the companies. "I couldn't find anything on the market so I decided to build instead of buying"
It kind of makes sense though, otherwise we'd have barely any choice
Fair comment & you do hear it a lot. But I've always believed that a good way to start is with a product you'd buy yourself
Ask him if I can bring my wheels up to A2 to test
Ahhh... fourth.
First
first !
!!
Larst
Ha Ha Ha..... research, firstly rolling resistance is a big scam because once you are over 10km, the ratio to aero is insignificant, so tubeless for better rolling resistance is ho hum.. rubbish. If you are serious about CFD and wheel performance, give them to Hambini to look at.
Or take it to a wind tunnel yourself like Dov does.
@@Cade_Media francis, not trying to be a smart ass here. Hambini is a aerospace engineer who works for a aviation company, that we all rely on to keep as in the air! and just recently he did a video explaining how a windtunnel is not a real reflection of how a bicycle performs on the road, this is due to swirling winds at lower speeds which a bicycle travels at. He explains the error can be as large as 40 percent related to wheels. I suggest you go and watch his channel. He also comments how the bicycle industry in many cases has no clue what they are talking about, they apply aerodynamic rules incorrectly. This guy knows his stuff! If he didn't, we would be in deep trouble when we get on a aeroplane. I suggest everyone here go check him out.
Waynos Fotos yup +1 for Hambini - if there’s a bullshit in marketing Hambini will discover it and whats more important explain why. @Francis Cade you should check out @Hambini
@@waynosfotos I know, he watches these videos