HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: 105mm in old frame
PostPosted: Fri Apr 04, 2003 11:58 am 
would any of you know whether an 105mm travel fork (marzocchi mx) would fit into a 1998 giant terrago frame?

im talking about geometry, wheelbase, angles, 1"1/8, and stuff like that

i know that i will have to buy a aheadset, so this is not the question

greets to you and thanks in advance
d4_d00d


Top
  
 
 Post subject: 105mm in old frame
Posted: Fri Apr 04, 2003 11:58 am 


Top
  
 
 Post subject:
PostPosted: Fri Apr 04, 2003 2:43 pm 
Offline

Joined: Tue Oct 22, 2002 7:49 pm
Posts: 1057
Location: The Netherlands - Europe
No, it does not fit. No question about it.

The geometry of most frames of that age are corrected for forks of around 60mm of travel , if at all suspension corrected! Your Terrago was a relativy cheap priced bike at the time, so chances are that it is designed to take no suspension what so ever.

If you would put in a 105mm fork, you would seriously upset your geometry, meaning you would have a tremendously slack head angle and an very lenghty wheelbase. This would create a very slow-steering bike.

JK


Top
 Profile  
 
 Post subject:
PostPosted: Fri Apr 04, 2003 5:44 pm 
Offline
Site Admin
User avatar

Joined: Tue Jun 11, 2002 2:45 pm
Posts: 891
Location: Germany
JK wrote:
No, it does not fit. No question about it.


That's also my opinion.

Although I'd say that the geometries of most frames in 1998 were already designed for about 80 mm travel.

If you want a light fork, I'd recommend you to look out for a RockShox Indy SL (60 mm) or Indy SL LT (75 mm) on eBay.


Top
 Profile  
 
 Post subject: Adding fork travel
PostPosted: Sun Apr 06, 2003 6:09 am 
Offline
User avatar

Joined: Sat Nov 30, 2002 4:49 am
Posts: 1902
I agree with JK and the admin, the fork will be to long. The recomendation I give to customers is that a 20mm travel increase is the max. you can expect a bike to cope with. This is for XC use. If you ride more aggressivly your frame is probably already struggeling to cope and the longer fork could cause it to break.


Top
 Profile  
 
 Post subject: Angle increase
PostPosted: Fri Jun 13, 2003 1:23 am 
Offline
User avatar

Joined: Wed Jun 04, 2003 2:24 am
Posts: 366
Location: Sydney, Australia
d4_d00d,

Giant Terrago '98 has head tube angle of 72 degrees (measured) with rigid fork 388 mm long (drop out to crown). Marzocchi MX is 478 mm long, 90 mm longer than my rigid fork. For every 17.5 mm increase in length, there is approximately 1 degree change in head tube angle. If you fit Marzocchi into Terrago head tube, the angle will be about 67 degrees, which is rather slack (chopper style) and you will have to steer your bike more with your body than handlebars. It's hard to explain, but to me it just feels weird. I've ridden my Terrago '98 with RST Mozo Pro '99 (89 claimed travel, 461 mm long) with no problems, but I can't recommend longer fork for this frame.

_________________
Best regards,
Rado bladteth Rzeznicki


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


Who is online

Users browsing this forum: Google [Bot] and 6 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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. new frame

in MTB

qvick

3

640

Sat Apr 19, 2014 11:29 am

AdyM View the latest post

There are no new unread posts for this topic. New frame - what to get?

[ Go to page: 1, 2 ]

in MTB

seismic

26

2192

Tue Aug 26, 2014 11:47 am

the_marsbar View the latest post

There are no new unread posts for this topic. Frame Painters in the US

in Road

tinozee

4

397

Tue Oct 01, 2013 7:12 pm

tinozee View the latest post

This topic is locked, you cannot edit posts or make further replies. Best carbon frame?

in Road

myndog

7

1179

Mon Dec 09, 2013 2:13 pm

Frankie - B View the latest post

There are no new unread posts for this topic. Sanding frame - need help !

in Cyclocross / Touring

KvnP

1

426

Thu Sep 05, 2013 3:44 am

Ragamuffin View the latest post


It is currently Sat Aug 30, 2014 12:10 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB