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Mullet bikes!?!

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12/19/2019 8:55 AM
Edited Date/Time: 12/19/2019 8:56 AM

Im going to be buying a new DH bike sometime about january of 2020. I was wondering has anybody tried 29F and 27.5R on a downhill bike and if so is it good enough to spend the extra money to build a DH rig around this concept.
( I race here and there but most of my time is in the bike park or just shuttling local DH trails)
Also im way to short for a full 29ER so thats definitely out

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12/19/2019 10:15 AM

This won't help you much but...

I tried it on my YT capra 29er, I was fully convinced it was going to be a game changer... Bike rode well with the 27.5 rear wheel, but when I put the 29er wheel back on I didnt notice any real change to the handling, but the rear end was clearly a lot smoother over small bumps. So as an average height guy (5'10) I would say full 29er all the way.

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12/19/2019 10:28 AM

bummer I kinda had a feeling it wouldn't feel too different no sure why I was hoping it would be a revelation!

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12/19/2019 10:33 AM

I rode a couple of downhill bikes with a 27.5 front and 26 rear. They had a modified seat-stay to accommodate the smaller rear wheel/preserve geometry. When ridden back to back (same model and build of bike) with a 27.5/27.5 version, the smaller rear wheel felt a bit snappier in the rear and was more "fun."

In the end, it is totally your preference, neither way is "right." Build a bike that is going to stoke you out and I bet it will be the best bike you've owned!

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12/19/2019 7:44 PM
Edited Date/Time: 12/19/2019 7:48 PM

Great option for smaller stature or short leg length riders. Best to put the 9er front wheel on a 27.5 bike to have the shorter chainstay for those riders. I liked the 9ers i tested but hanging off the back and jumping/drops made me nervous i was going to tag the twins. Bit more cumbersome moving around. I expected that a bit in the corners but it was more adjusting off jumps. None of the problems were crazy bad and i really liked the speed the bike carried and through the rough. First mullet bike purchase last year and its been the best of both worlds. Its a yt decoy. I wouldnt mind a touch shorter chainstay but its a super fun bike so no real gripes. The 9er front is confidence inspiring rolling through steep terrain that may have rock or root roll overs. Keeps rolling through the compressions. The 27.5 seems to have the ability to kick out when needed on the steeper terrain too. Its working well both on the dh trails and the bike bark jump trails. Id like to build up a guerilla gravity mega in a mullet for next year. Ill still be able to convert it to 9er front and back for longer xc or alpine rides. The devinci spartan 9er is one 9er i thought about doing it to as well. Short chainstay for a 9er. Easy enough to jack the fork to 180 to keep the bb up and/or an external bearing bottom headset cup

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12/19/2019 9:44 PM
Edited Date/Time: 12/20/2019 10:39 AM

You should try it if you can without breaking the bank. I do see the upside to a 29" rear, but if you're short and get ur nuts buzzed as often as I do on a 26, that seems scary. Mullets seem to work for Loic, Danny, and Laurie thoughwink

Mullet'ed my old Wilson last year. It was a game changer for me(27.5/26 bike park sled). Steeps are more fun and feel more in control. That has since given me more confidence. Braking feels more powerful I assume because of the shift in weight balance(also got a larger frame). I use more front brake now which I never did b4, and skid less. I feel like I can brake later into a corner than b4. Never feel like I'm gonna endo. Don't really know how to explain it, but my friends sure see the difference on my face when we get to the bottom of a trail now vs the way it was. Just feels more fun. Bet my head angle is more slack than anyone here now too ha. WOULD LOVE TO TRY A 29/27.5 MYSELF. JELLY OF THOSE THAT ARE ALREADY ON EM

If you're doing this to a bike that isn't already mixed wheel sizes....
-Check the rules on your new bike's warranty. I could totally see people denying warranty services due to riding the bike in a way that it was not designed to be ridden.
-Keep bottom bracket height, head tube angle, seat angle, stack and reach in mind as they will def change(more so if you go the 27.5 and throw a 29 fork on it). Your suspension may feel different too. Rear shock on mine required some tuning as to what it was set at previously
-I believe chainstay length/bb height/head angles and all those crazy measurement's 'sweet spots' are different from person to person and what/how fast they are riding. Check out the "short chainstays suck" forum. Watch Sam Pilgrim mod his bikes for fun on his youtube channel. Or check out the comments in any geometry based post/forum on any bike site(saying one way is right or wrong starts wars there). Everyone has a different view of what is perfect or even rideable. Jus go try

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12/21/2019 10:34 AM

don't shoot me, but...
I have not tried a mullet setup on my Evil or YT, but I have on my levo eMTB. I set the levo up mullett style from the get go, thought it was "unreal bro", but I recently put the stock 29 back on and I 'think' I like it better haha. Granted, I had a 2.8 on the rear when it was 275, but it felt slower, more sluggish-it climbed better, but felt a bit slow in corners?
Point being, I've ridden bikes for 30 plus years, I notice setup changes across the board but I couldnt say there was a 'game changing' difference between the 2....granted, a bit skewed because the 'test' was on a pedal assist bike.

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