Wider bead hook-less carbon rims 26er DH/AM & 27.5er (650B) AM & 29er AM/XC
Many customers prefer to try this new wider bead hook-less carbon rims 26er (DH/AM width 33mm) & 27.5er (650B) (width AM 35mm) & 29er (width AM 35mm/30mm & XC 27mm). Please find as below rim specs and cross section diagrams.
Of course, it is important for us to understand first how to secure the tire without any bead hook. Actually hookless rim design is not new, such design has been put on automotive wheels for quite a long time. It is also hook less design & using tubeless tire. Now hook less design is started to used in bicycle rims. The following pictures illustrate the inside views of these wider bead hook-less carbon rims 26er (DH/AM width 33mm) & 27.5er (650B) (width AM 35mm) & 29er (width AM 35mm/30mm & XC 27mm).
This rim is without bead hook, it is ok to hold tubeless and tubeless-ready tires. No need to use hook less ready tires. Our engineer started to study hookless design quite a long time ago. There is similar rim on the market, there is zero issues of holding tires for hook-less rims.
Compare to head hook design, the hook less design is more durable. Because the rim wall structure is simpler. Then carbon fiber will be more continuous. It will be stronger than a hooker carbon rim at the same weight.
The testing data for spoke hole NO.1: around 374.26kgf, the nipple cracked, there is no crack on rim spoke hole
The testing data for spoke hole NO.2: around 305.68kgf, the spoke cracked, there is no crack on rim spoke hole
Since the spoke & nipples are crack while testing, we can not get the max spoke tension of spoke holes. But we get the result the spoke holes can hold more than 300kgf tension.
Rim Impact test:
While the load is around 172.98kgf, the rim cracks at the vale hole area. (Pass: CB stiffness standard is 150kgf)
| Carbon hook-less 29er rim impact test data sheet |
|---|
| Max load | Max Elongation | Energy absorption | Breaking strength | Test time | Max displacement | Max Elongation |
|---|---|---|---|---|---|---|
| 172.98kgf | 47.07% | 4563.50kgf.mm | 18114.96kPa | 4.89min | 49.03mm | 47.07% |
The following is the pricing of our wider bead hook-less carbon rims 27.5er (650B) & 29er.
Price 26er bead hook less rim (width DH/AM 33mm): 145 USD/piece
Price 27.5er & 650B bead hook less rim (width AM 35mm): 155 USD/piece
Price 29er bead hook less rim (width AM 35mm & XC 27mm): 145 USD/piece
Buy it now:
bead hook-less carbon 26er mtb 33mm wide DH/AM rims tubeless compatible >>
bead hook-less rims carbon 27.5er mtb 35mm wide AM light and strong bike rim tubeless compatible >>
bead hook-less rims carbon 29er mtb 35/30/27mm light and strong bike rim tubeless compatible >>
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