Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-09-09, 05:23 PM   #1
oboeterry
Senior Member
Thread Starter
 
Join Date: Jun 2008
Location: I am currently playing 2 months on the national tour of Annie, and starting Feb '10 will be playing 18 months on the national tour of Beauty and the Beast; my stuff lives in a storage unit in Northridge, CA and at a buddy's house in Cedar City, UT :)
Bikes: 2006 Dahon Speed P8 (currently in storage); Bike Friday Season tikit (with all the bells and whistles) :)
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
difference between 349mm and 355mm tires?

Hi all,

I have been riding my Dahon Speed P8 for a few years (on and off... not an avid cyclist), and I just got a BF Season tikit... the tikit line uses the 349mm tires, which cannot take wider tires like Big Apples. So, my non-mechanical mind started wondering... if there's only a 6mm difference between the 349 and 355mm tires (which can use Big Apples), could I use the 355mm on my tikit? (sorry if this is a dumb question...)
Thanks so much!

Terry
oboeterry is offline   Reply With Quote
Old 02-09-09, 07:32 PM   #2
jur
Senior Member
 
Join Date: May 2005
Bikes:
Posts: 6,857
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 48 Post(s)
I suppose the biggest issue is whether there is enough clearance at the fork crown to accommodate the bigger wheel plus fatter tyre.

the second issue, also non-trivial, is the buy the different wheelset.

3rd issue, re-set the brakes for the new rims (checking they can move 3mm radially away from the axle is part of step 1).

If you thought simply to use 355mm Big Apples on 349mm rims, forget about it. They won't seat on the rims, they will blow off.
jur is offline   Reply With Quote
Old 02-09-09, 08:08 PM   #3
oboeterry
Senior Member
Thread Starter
 
Join Date: Jun 2008
Location: I am currently playing 2 months on the national tour of Annie, and starting Feb '10 will be playing 18 months on the national tour of Beauty and the Beast; my stuff lives in a storage unit in Northridge, CA and at a buddy's house in Cedar City, UT :)
Bikes: 2006 Dahon Speed P8 (currently in storage); Bike Friday Season tikit (with all the bells and whistles) :)
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by jur View Post
I suppose the biggest issue is whether there is enough clearance at the fork crown to accommodate the bigger wheel plus fatter tyre.

the second issue, also non-trivial, is the buy the different wheelset.

3rd issue, re-set the brakes for the new rims (checking they can move 3mm radially away from the axle is part of step 1).

If you thought simply to use 355mm Big Apples on 349mm rims, forget about it. They won't seat on the rims, they will blow off.
I was hoping that you might reply I don't know much about the clearances, but I can have my LBS guy take a look at it... and I would buy the whole wheel (rim and tire), as I figured that the slightly larger ones wouldn't seat properly.
Thanks so much for your reply!
oboeterry is offline   Reply With Quote
Old 02-09-09, 08:12 PM   #4
vik 
cyclopath
 
vik's Avatar
 
Join Date: Apr 2006
Location: Victoria, BC
Bikes: Surly Krampus, Surly Straggler, Pivot Mach 6, Bike Friday Tikit, Bike Friday Tandem, Santa Cruz Nomad
Posts: 5,265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you want a wider tire on your Tikit get some 40mm GS Scorchers in 349....very comfortable & fast tire. A very easy and effective upgrade.
__________________
safe riding - Vik
VikApproved
vik is offline   Reply With Quote
Old 02-09-09, 08:50 PM   #5
jur
Senior Member
 
Join Date: May 2005
Bikes:
Posts: 6,857
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 48 Post(s)
Quote:
Originally Posted by vik View Post
If you want a wider tire on your Tikit get some 40mm GS Scorchers in 349....very comfortable & fast tire. A very easy and effective upgrade.
+1 - I would go this route as well, much cheaper and less risk. Pump to lower pressure (depending on your weight) for a soft ride.
jur is offline   Reply With Quote
Old 02-09-09, 09:03 PM   #6
joseff
Senior Member
 
Join Date: Jan 2008
Bikes:
Posts: 205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
^ This coming from a man considering 406 on his Birdy
joseff is offline   Reply With Quote
Old 02-09-09, 09:09 PM   #7
makeinu
Banned
 
Join Date: Oct 2006
Bikes:
Posts: 2,294
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by vik View Post
If you want a wider tire on your Tikit get some 40mm GS Scorchers in 349....very comfortable & fast tire. A very easy and effective upgrade.
+1+ I believe there was a discussion on the Bike Friday mailing list concluding that wider 355s would not fit.
makeinu is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:12 PM.