Why are so many DH bikes still 27”?

PB Forum :: Downhill
Why are so many DH bikes still 27”?
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flag naturallight87
Posted: Oct 1, 2022 at 18:16 Quote
Will they become phased out in a few years when the industry shifts to full 29/mullet, like what we’re seeing now with all-mtn and enduro bikes?
flag englertracing
O+
Posted: Oct 1, 2022 at 20:14 Quote
Some people still prefer 27.5 for park.
All lot of the big jump crowd like 27.5
flag DugS
O+
Posted: Oct 2, 2022 at 7:29 Quote
A 29er is a lot of bike and can be hard to manage for somebody 5’5” and under.
flag Jready
FL
Posted: Oct 2, 2022 at 14:44 Quote
I went back to 27.5. Prefer the ride. Might be slower at the elite level but it’s funner at all levels
flag Charlotroy
Posted: Oct 3, 2022 at 9:25 Quote
yep, 29er sucks big time and I'm 6'0.....I did one season on a supreme 29er and this season I have a supreme mullet, much better for our tight technical trails here in mont sainte anne
flag ShawMac
O+ FL
Posted: Oct 4, 2022 at 14:20 Quote
I ride a 27 DH rig because I don't have the burnable cash to buy anything newer where 29 took hold. Trying to mullet a 2018 27.5 would just F with geometry too much
flag englertracing
O+
Posted: Oct 4, 2022 at 15:00 Quote
ShawMac wrote:
I ride a 27 DH rig because I don't have the burnable cash to buy anything newer where 29 took hold. Trying to mullet a 2018 27.5 would just F with geometry too much

Not if your willing to drop a bit of travel and move the clamps close to where the front tire can almost touch the lower crown
flag ShawMac
O+ FL
Posted: Oct 4, 2022 at 19:36 Quote
I think I already did the math with the A-C differences with that in mind and I still don't think I could get it to work and the needed reduction in travel seemed like it wasn't worth the extra roll over of the big wheel. And I am a 29 convert through and through.

Of course, if someone offered up a 29 Boxxer I could slide in and try I wouldn't say no.
flag englertracing
O+
Posted: Oct 4, 2022 at 20:54 Quote
ShawMac wrote:
I think I already did the math with the A-C differences with that in mind and I still don't think I could get it to work and the needed reduction in travel seemed like it wasn't worth the extra roll over of the big wheel. And I am a 29 convert through and through.

Of course, if someone offered up a 29 Boxxer I could slide in and try I wouldn't say no.

I dropped my 160f/150r 27.5 bike down to 140f an threw a borrowed 29 up front and I found it to be about equalivalent.
flag chory
Posted: Oct 20, 2022 at 5:06 Quote
On 27.5 I can ride any enduro tight turns with ease as well, not only dh tracks. Even though Im not a very good rider its easier for me on tight switchbacks. Im not racing so I dont need 29. The only thing where I would prefer 29 is on double blacks with a lot of rocks and roots.
flag naptime
FL
Posted: Oct 20, 2022 at 5:10 Quote
unless your'e a WC racer, racing for tenths,hundreths of a second..... 29ers suck balls
flag MT36
Posted: Oct 20, 2022 at 6:50 Quote
27: can get stuffed harder into corners and are more manageable in the air. If I raced I would 29 but in the meantime I like the response and liveliness.
flag M0rd4c4i
Posted: Oct 25, 2022 at 2:12 Quote
Smaller the diameter of a rim, the stronger the wheel can be built.
flag WaterBear
Posted: Oct 26, 2022 at 7:34 Quote
Wheel strength and maneuverability are factors. For the same spoke tension the smaller wheel is stronger (regarding lateral loads). 29ers also have more rotational inertia which is a blessing and a curse - they have better rollover from the increased size and mass but are harder to whip around in the air.
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