Adding Rim airfoils
Moderator: robbosmans
- WinterRider
- Posts: 564
- Joined: Tue Feb 05, 2013 2:46 pm
Aero rims.
Add an airfoil on existing rims. Designs could be complex.. not seen on molded rims. Your alloy rims too.
Simple. Cheap to manufacture. Not the bother of meeting strength criteria
rims do. Forget these 'molded games'.
Add me a teardrop shape to my "tall" Kinlin 200's.. give me a few watts.
These should weigh minor grams... effective trade for the benefits. Unlike the heavy clunking car-bon.
Add an airfoil on existing rims. Designs could be complex.. not seen on molded rims. Your alloy rims too.
Simple. Cheap to manufacture. Not the bother of meeting strength criteria
rims do. Forget these 'molded games'.
Add me a teardrop shape to my "tall" Kinlin 200's.. give me a few watts.
These should weigh minor grams... effective trade for the benefits. Unlike the heavy clunking car-bon.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
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Wow I wonder why noone had this idea before
- WinterRider
- Posts: 564
- Joined: Tue Feb 05, 2013 2:46 pm
Have NO issue w the 21st century types spending all that coin on the plastic molded stuff.. great for the economy moving the cash around. Well done in fact. Cool too.
Butttt... adding a foil on the rim would open up real experimentation beating the wind.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
- WinterRider
- Posts: 564
- Joined: Tue Feb 05, 2013 2:46 pm
Marin was being sarcastic. Cause a lot of people have done this before. Heck the HED disc wheels are just a carbon skin over a spoked wheel.
Evo 4.9kg SL3 6.64kg Slice RS 8.89kg viewtopic.php?f=10&t=110579" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
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Around 1990 there used to be faux disc wheel covers with a alloy hoop clipped to the spokes supporting a stretch nylon cover.
I think one problem is that the brake tracks can't be covered. The airfoil would be broken there and it's a crucial place.
Another is that it might be hard to attach it without it coming loose
Thin plastic warps in heat. I had some covers that were not allowed to go over 80 degrees which means no direct sunshine in the hot summer. They were also very heavy at 500gr/wheel. They were full covers though.
Never got to use them. Only one ride. Worked fine but the bike felt quite sluggish.
Another is that it might be hard to attach it without it coming loose
Thin plastic warps in heat. I had some covers that were not allowed to go over 80 degrees which means no direct sunshine in the hot summer. They were also very heavy at 500gr/wheel. They were full covers though.
Never got to use them. Only one ride. Worked fine but the bike felt quite sluggish.
I had those around 1992. I used them one time in a TT.bremerradkurier wrote: ↑Thu Jul 19, 2018 7:23 pmAround 1990 there used to be faux disc wheel covers with a alloy hoop clipped to the spokes supporting a stretch nylon cover.
- WinterRider
- Posts: 564
- Joined: Tue Feb 05, 2013 2:46 pm
Secure attachment of any aero device I think is the main limiting factor... potential profit margins I think a nice apple. No need for strength either.. the material could be very light.
Lots of improvements to be had fishin' to remove the last few watts.
Lots of improvements to be had fishin' to remove the last few watts.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Secure attachment is what adds the weight. As they need to be *really* secure. The thought of having a poorly secured ring of plastic or composite on your wheel at any speed is terrifying.
Which is eventually/essentially what's killed them.
Heavy, lack of compatibility (need to fit a broad range of rims, properly.) And just not that aero.
Carbon does it better.
Which is eventually/essentially what's killed them.
Heavy, lack of compatibility (need to fit a broad range of rims, properly.) And just not that aero.
Carbon does it better.
That would probably be the Unidisc you are thinking of. It came in both a lycra model, and a rubberized lycra model that resisted dirt and grunge better than the straight fabric model. I even remember guys riding off road with them, back when Tioga tension discs were the coolest thing, so they clearly had their secure attachment game dialed in.bremerradkurier wrote: ↑Thu Jul 19, 2018 7:23 pmAround 1990 there used to be faux disc wheel covers with a alloy hoop clipped to the spokes supporting a stretch nylon cover.
- WinterRider
- Posts: 564
- Joined: Tue Feb 05, 2013 2:46 pm
Suggest.. that is what killed these. Glue always fails... just a question of when.
Litespeed 2000 Appalachian 61 cm
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Litespeed 1998 Blue Ridge 61cm
Fitness rider.. 1 yr from seven decades age.
That is my story and I'm stick'n to it.
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com