Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Sun May 29, 2016 6:53 pm
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED

If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00





Post new topic  Reply to topic  [ 5 posts ] 
Author Message
 Post subject: New Frame Fit Questions
PostPosted: Mon Dec 05, 2011 12:26 am 
Offline

Joined: Fri Aug 05, 2011 5:18 am
Posts: 181
Location: Arizona
When going from a 58, to a 56cm frame, how do I keep all the adjustments my fitter made, when he set me up on the bike? Is it as simple as taking measurements, and duplicating them on to the new frame, or do I need to go back and see the guy again?

This is the first time I've went backwards on frame size, I usually go with the same top tube length, and make it easier on myself.

My main concern would be the stem length. I'm having to run a 90mm on the 58, and it makes it kind of twitchy. How do I figure out which stem to use on the 56? Would I just go with a 110mm, to duplicate the set up I already have?


Top
   
PostPosted: Mon Dec 05, 2011 2:34 am 
Offline

Joined: Sat Nov 20, 2010 6:06 am
Posts: 934
Location: Perth, Western Australia
If you have a printout from your fitter you can use this to replicate measurement.
If not the following should work.
Mark a point on your saddle 12cm from the back of saddle.
Using a plumb line and tape measure, measure saddle setback from centre of BB
Measure from same point on saddle to centre of BB for saddle height
Using a spirit level and tape measue, measure saddle to handlebar drop. With spirit level on saddle measure from bottom of spirtit level to centre of handlebar next to stem
Measure from tip of saddle to centre of handlebar ( I measure to gap in stem faceplate)
I also measure tip of saddle to top of hoods
This should help you replicate your setup if you are using the same bars, brake/shifter levers etc.
Also saddle height will depend on you using the same shoe/ pedal combination on both bikes
Also your LBS Should be able to help you figure out stem length required.

I'm no expert but some basic measurements helped me set up all 3 of my bikes within a few mm of each other.

If any other WW members have anything to add, or have more experience, I'm sure they will help out with advice. I hope I might also learn a bit from other replies

Cheers
Oz

_________________
Ozrider - Western Australia
Parlee Z5 XL (6055g/13.32lbs) Trek Madone 5.9 (7052-7500g)Jonesman Columbus Spirit (8680g)
Chase your dreams - it's only impossible until it's done


Top
   
PostPosted: Mon Dec 05, 2011 3:58 am 
Offline

Joined: Tue Sep 14, 2010 3:28 pm
Posts: 1405
Easiest way I've found is to find a level hard surface with a wall. Place your front tire against the wall and measure to the tip of saddle, center of the bars, and center of BB. Next take measurements from the floor to the center of the bars, top of saddle and BB. With these measurements you can calculate the stack and reach of the center of your bars(X/Y measurements)from the BB, and the height and set back of your saddle from the BB.

When you get your new frame measure both ways to the BB and adjust the others to make up for any differences between BB's between the new and old frames.

The important thing with using this method is that you use the same floor and wall to measure along with the same wheels and tires.


Top
   
PostPosted: Mon Dec 05, 2011 7:38 am 
Offline
in the industry
User avatar

Joined: Sun Nov 21, 2004 2:45 pm
Posts: 2874
Location: London, UK
bricky21 wrote:
Easiest way I've found is to find a level hard surface with a wall. Place your front tire against the wall and measure to the tip of saddle, center of the bars, and center of BB. Next take measurements from the floor to the center of the bars, top of saddle and BB. With these measurements you can calculate the stack and reach of the center of your bars(X/Y measurements)from the BB, and the height and set back of your saddle from the BB.

When you get your new frame measure both ways to the BB and adjust the others to make up for any differences between BB's between the new and old frames.

The important thing with using this method is that you use the same floor and wall to measure along with the same wheels and tires.
Not necessary to have same tyres & wheels. All that matters is that the wall & floor are vertical & horizontal and the relative positions will be the same.


Top
   
PostPosted: Tue Dec 06, 2011 4:01 pm 
Offline

Joined: Wed Oct 26, 2011 8:45 pm
Posts: 37
This will also make your life a little easier www.parktool.com/blog/repair-help/road-postioning-chart. It is an easy to fill out chart to have your current bikes measurements.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 5 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. A couple of Cannondale Di2 Frame Questions

in Road

allenpg

0

377

Mon Jun 22, 2015 6:08 am

allenpg View the latest post

There are no new unread posts for this topic. DA Groupset questions.

in Road

Wonderman

9

997

Thu Jul 30, 2015 7:15 pm

Wonderman View the latest post

There are no new unread posts for this topic. CX wheelsets questions

in Everything wheels

Slagter

14

879

Mon Jan 04, 2016 12:43 am

Tamu8104 View the latest post

There are no new unread posts for this topic. New project - some questions ....

in Road

Kupepe

4

601

Sat Jan 30, 2016 6:30 am

Kupepe View the latest post

There are no new unread posts for this topic. Assos apparel questions

in Road

PrettyA

5

1099

Thu Jun 18, 2015 2:45 am

eaglejackson View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: BeeBee30, Exabot [Bot], Yahoo [Bot] and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited