Page Index Toggle Pages: [1]  Print
Very Hot Topic (More than 25 Replies) converting 29 to 650b? (Read 1727 times)
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
converting 29 to 650b?
06/28/13 at 1:56am
Print Post  
i've been toying with this idea, to put a 650b tire on my 29er.

it would take the extra agility that comes with the smaller wheel size would have to be a plus right?  downfall is i'd loose some of the "rollover" characteristics of a bigger wheel

surely clearance for the rims and tires around the frame/forks wouldnt be an issue.  i guess theoretically the bb and cranks would sit almost an inch lower but its only an inch that wouldnt be so bad?

i guess i'd have to change the gearing some but that seems easy enough

has anybody else tried this?   

anything else i'm not thinking of?
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Screaming Knees
Big Ring
*****
Offline


Work Ride Tarheel Trailblazers

Posts: 1647
Location: Fort Collins, CO
Joined: 06/02/10
Re: converting 29 to 650b?
Reply #1 - 06/28/13 at 4:57am
Print Post  
Do it. Frankenstein builds are great. 

Your bottom bracket will be lower, causing possible pedal strikes (which suck, BTW). Your gearing wouldn't change that much, just get a little easier. 

But that being said, you are still going to have a longer wheelbase which is what gives the 29er it's sluggish feel.   

Get someone to let you borrow a wheelset for a ride and tell us how it is.
« Last Edit: 06/28/13 at 2:59pm by Screaming Knees »  
(You need to Login or Register to view media files and links) (Attachment deleted)

A mountain biker that doesn't ride a road bike has no legs, A road biker that doesn't ride the mountain bike has no soul.
Back to top
 
IP Logged
 
criticalmass
Big Ring
*****
Offline


Squirrels, the new TTF

Posts: 2030
Joined: 07/24/06
Re: converting 29 to 650b?
Reply #2 - 06/28/13 at 2:22pm
Print Post  
So if the bike drops the same distance in the front as it does in the back, will it steepen the head tube angle?

  
(You need to Login or Register to view media files and links) (Attachment deleted)

-... .. -.-. -.-- -.-. .-.. .
Back to top
 
IP Logged
 
Screaming Knees
Big Ring
*****
Offline


Work Ride Tarheel Trailblazers

Posts: 1647
Location: Fort Collins, CO
Joined: 06/02/10
Re: converting 29 to 650b?
Reply #3 - 06/28/13 at 2:59pm
Print Post  
Good point. Editing original post...
  
(You need to Login or Register to view media files and links) (Attachment deleted)

A mountain biker that doesn't ride a road bike has no legs, A road biker that doesn't ride the mountain bike has no soul.
Back to top
 
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #4 - 06/28/13 at 6:04pm
Print Post  
do you think theres a way to shorten the wheelbase up?  custom spacers/dropouts for the rear?  maybe some for the front too??
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Screaming Knees
Big Ring
*****
Offline


Work Ride Tarheel Trailblazers

Posts: 1647
Location: Fort Collins, CO
Joined: 06/02/10
Re: converting 29 to 650b?
Reply #5 - 06/28/13 at 6:17pm
Print Post  
no.
  
(You need to Login or Register to view media files and links) (Attachment deleted)

A mountain biker that doesn't ride a road bike has no legs, A road biker that doesn't ride the mountain bike has no soul.
Back to top
 
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #6 - 06/30/13 at 4:23am
Print Post  
i think its not a bad idea i have a few things in mind all i need is a good machine shop and i think im in business

  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
phattire
Little Ring
****
Offline


Work Ride Tarheel Trailblazers

Posts: 892
Location: Corncobb
Joined: 07/06/11
Re: converting 29 to 650b?
Reply #7 - 06/30/13 at 11:31pm
Print Post  
????? :exclamation Huh
  
(You need to Login or Register to view media files and links) (Attachment deleted)

MY GRASS IS BLUE!
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #8 - 07/03/13 at 1:05am
Print Post  
I'm not thinking it's such a great idea.  The head and seat tube angles will stay the same and so will the wheel base.  Same head tube angle with a smaller wheel should speed it up a bit but think having the same wheel base would negate any gains.  And you would loose not only an inch of BB clearance but also bring the end of the crank arm 1 inch closer to the ground.  You will probably pedal strike a lot.

But like all things Frankenstein, give it a try and let us know how it works out!
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #9 - 07/03/13 at 5:18pm
Print Post  
do you think if i went straight from 29 to 26 and skip the 650 it would get more benefits?
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Screaming Knees
Big Ring
*****
Offline


Work Ride Tarheel Trailblazers

Posts: 1647
Location: Fort Collins, CO
Joined: 06/02/10
Re: converting 29 to 650b?
Reply #10 - 07/03/13 at 6:11pm
Print Post  
you should put a 26er on the front and a 29er on the rear.
  
(You need to Login or Register to view media files and links) (Attachment deleted)

A mountain biker that doesn't ride a road bike has no legs, A road biker that doesn't ride the mountain bike has no soul.
Back to top
 
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #11 - 07/03/13 at 6:17pm
Print Post  
pretty sure that would affect headtube angle doe
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Screaming Knees
Big Ring
*****
Offline


Work Ride Tarheel Trailblazers

Posts: 1647
Location: Fort Collins, CO
Joined: 06/02/10
Re: converting 29 to 650b?
Reply #12 - 07/03/13 at 8:30pm
Print Post  
Nah, it'll be ok
  
(You need to Login or Register to view media files and links) (Attachment deleted)

A mountain biker that doesn't ride a road bike has no legs, A road biker that doesn't ride the mountain bike has no soul.
Back to top
 
IP Logged
 
twinsdad
Ex Member


Re: converting 29 to 650b?
Reply #13 - 07/04/13 at 2:19am
Print Post  
And think how fast it will accelerate with that 26er tire in the front...Don't even get me started on the awesome small bump compliance with the 29er out back....
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #14 - 07/04/13 at 3:27am
Print Post  
Quote:
And think how fast it will accelerate with that 26er tire in the front...Don't even get me started on the awesome small bump compliance with the 29er out back....

+1!
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
deucedeuce
Coaster Bike
**
Offline



Posts: 138
Joined: 01/24/13
Re: converting 29 to 650b?
Reply #15 - 07/05/13 at 8:40pm
Print Post  
isitwinteryet wrote on 07/03/13 at 5:18pm:
do you think if i went straight from 29 to 26 and skip the 650 it would get more benefits?

YES
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #16 - 07/06/13 at 5:55pm
Print Post  
Does anyone have a 26 I can throw on the front to test it out?  Maybe 1 for the back too?  I will need 1 w disc breaks fyi
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #17 - 07/06/13 at 6:01pm
Print Post  
isitwinteryet wrote on 07/06/13 at 5:55pm:
Does anyone have a 26 I can throw on the front to test it out?  Maybe 1 for the back too?  I will need 1 w disc breaks fyi

Surely you're not serious?  Dude.  You'd pedal strike riding on the road.  Tongue
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #18 - 07/06/13 at 6:19pm
Print Post  
u think?  should only drop me 1.5" right?  im pretty sure i have at least that much clearance to deal with but ill double check next time im near the bike
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #19 - 07/06/13 at 7:42pm
Print Post  
isitwinteryet wrote on 07/06/13 at 6:19pm:
u think?  should only drop me 1.5" right?  im pretty sure i have at least that much clearance to deal with but ill double check next time im near the bike

And the end of your crank arms will be 1.5 inches closer to the ground on the down stroke.  I wouldn't turn and pedal at the same time!  Shocked     Smiley Smiley Smiley
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #20 - 07/06/13 at 8:09pm
Print Post  
yeah i thnk ive got the clearance ill double check later doe
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
JR
Big Ring
*****
Offline



Posts: 1040
Joined: 03/29/11
Re: converting 29 to 650b?
Reply #21 - 07/06/13 at 8:59pm
Print Post  
Why stop at 26"? Go 24" wheels.  Make that thing spritely...
  
(You need to Login or Register to view media files and links) (Attachment deleted)

"Don't rely on those who won't try"
Back to top
 
IP Logged
 
Natedilla
Small Cog
***
Offline


Work Ride Tarheel Trailblazers

Posts: 410
Joined: 12/16/11
Re: converting 29 to 650b?
Reply #22 - 07/07/13 at 12:24am
Print Post  
Dude..Don't listen to all these skeptics.

Go for it. And the 26/29" combo would be sick. Post pics
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #23 - 07/07/13 at 2:30am
Print Post  
Remember going from a 29" wheel to a 26" wheel on a 29er frame will probably effectively steepen the head tube angle by probably 1-2 degrees.  Like running old school XC bikes from the 80's with 22" wide bars...squirrelly!
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #24 - 07/07/13 at 2:30am
Print Post  
JR wrote on 07/06/13 at 8:59pm:
Why stop at 26"? Go 24" wheels.  Make that thing spritely...

Why not 20's?  Wink
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
btalley
Big Ring
*****
Offline


aka "Lil Bill" or "Squatch"

Posts: 1483
Location: Mooresville, NC
Joined: 08/03/10
Re: converting 29 to 650b?
Reply #25 - 07/07/13 at 3:25pm
Print Post  
24 rear 29 front. 49er

As long as you can get you front wheel over something, the back will follow, no real need for a rear wheel at all.  Not sure why I have one on my bike.  It helps hold it on my bike rack or stand up in the garage.  I am converting mine to one of those you can ride on top of water. Maybe even a mini hovercraft. 

Who rides their bike anyway?  Don't we just argue about how much 29ers suck and how fast you can e-ride around sherrman ranch or fishers farms?  FF in 17 minutes! Strava record holder in the rain!  Didn't even shift, so I SSed the whole thing
  
(You need to Login or Register to view media files and links) (Attachment deleted)

Everyone needs at least one boat! 

Talley's Pier 77 Marine
(You need to Login or Register to view media files and links)
Back to top
IP Logged
 
isitwinteryet
Big Ring
*****
Offline


in soviet russia, bike
steal you!

Posts: 1072
Joined: 06/18/09
Re: converting 29 to 650b?
Reply #26 - 07/08/13 at 1:36pm
Print Post  
ehhh im not sure who to trust here anymore i think some of you are messing with me
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11854
Location: Lake Norman
Joined: 08/04/03
Re: converting 29 to 650b?
Reply #27 - 07/08/13 at 6:42pm
Print Post  
isitwinteryet wrote on 07/08/13 at 1:36pm:
ehhh im not sure who to trust here anymore i think some of you are messing with me

Ya think?
  
(You need to Login or Register to view media files and links) (Attachment deleted)

We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
IP Logged
 
Page Index Toggle Pages: [1] 
Print