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


Go Back   > >

Touring Have a dream to ride a bike across your state, across the country, or around the world? Self-contained or fully supported? Trade ideas, adventures, and more in our bicycle touring forum.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-20-16, 10:14 AM   #1
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What are the issues with changing out a fork?

After round and round about getting a new bike or upgrading/changing out either of my existing bikes and visiting a number of LBS to see what is available for touring with my budget in mind I've decided to go with my Sirrus Comp. I'm over wanting to get a trekker bar, opting instead for the ergon gp5 grips, ordered a Jandd expedition rack because it's 3" longer and rated for 75lbs thus eliminating heal strike and the need for front racks. But what about just changing out the carbon/aluminum forks for aluminum?

I know you have better control with weight on the front too and I do have a large handle bar bag that is always full but my question is why not? I'ld have the brazons needed and no fear of carbon failure. Why isn't this a good idea? I don't mind investing a few hundred dollars to do this if that's what it costs but is there another reason not to other than $$$.
elizwlsn is offline   Reply With Quote
Old 05-20-16, 10:43 AM   #2
rhm
multimodal commuter
 
rhm's Avatar
 
Join Date: Nov 2006
Location: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Posts: 15,654
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Some of the issues I can think of, assuming the fork fits your frame and wheel size:

Material, obviously.

Strength/rigidity/flex; some forks are more springy than others, and you will feel vibrations &c differently at the handlebar.

Geometry; they have length and offset. Offset is often called "rake" but that's a confusing term so let's avoid it. More offset will mean less mechanical trail. A longer fork will lift the front end of the bike up, making the bicycle's frame angles more slack. A shorter fork will do the opposite.

Eyelets and other extras; some forks have none; some have eyelets for fenders only; some also have eyelets for a rack; then there's eyelets on the side for low rider racks and other kinds of racks, water bottle cages, and all kinds of things.

Brake mounts; disk? Cantilevers? Center pulls? U-brakes?

Tire clearance: can you fit a 35 mm tire? 45mm? 55mm?

I could go on, but that's a start.
__________________
New leather for old saddles.
rhm is offline   Reply With Quote
Old 05-20-16, 11:04 AM   #3
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rhm View Post
Some of the issues I can think of, assuming the fork fits your frame and wheel size:

Material, obviously.

Strength/rigidity/flex; some forks are more springy than others, and you will feel vibrations &c differently at the handlebar.

Geometry; they have length and offset. Offset is often called "rake" but that's a confusing term so let's avoid it. More offset will mean less mechanical trail. A longer fork will lift the front end of the bike up, making the bicycle's frame angles more slack. A shorter fork will do the opposite.

Eyelets and other extras; some forks have none; some have eyelets for fenders only; some also have eyelets for a rack; then there's eyelets on the side for low rider racks and other kinds of racks, water bottle cages, and all kinds of things.

Brake mounts; disk? Cantilevers? Center pulls? U-brakes?

Tire clearance: can you fit a 35 mm tire? 45mm? 55mm?

I could go on, but that's a start.
I guess I was thinking just changing to the same fork made with aluminum or steel even but hopefully having brazons (sp?).
elizwlsn is offline   Reply With Quote
Old 05-20-16, 11:08 AM   #4
rhm
multimodal commuter
 
rhm's Avatar
 
Join Date: Nov 2006
Location: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Posts: 15,654
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Quote:
Originally Posted by elizwlsn View Post
I guess I was thinking just changing to the same fork made with aluminum or steel even but hopefully having brazons (sp?).

Braze-ons.


Is the replacement fork something that's readily available?
__________________
New leather for old saddles.
rhm is offline   Reply With Quote
Old 05-20-16, 11:12 AM   #5
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rhm View Post

Braze-ons.


Is the replacement fork something that's readily available?
I have no clue.... in case it's no obvious I have no clue about the actual mechanics involved. LOL. I suppose the best thing is to go to a LBS and ask there but sometimes a little knowledge ahead of talking to the mechanic or salesperson is a good thing.
elizwlsn is offline   Reply With Quote
Old 05-20-16, 11:13 AM   #6
robow
Senior Member
 
robow's Avatar
 
Join Date: Aug 2005
Bikes:
Posts: 2,646
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Instead of changing out your fork because it doesn't have the required braze ons, did you ever consider just getting an Old Man Mountain front rack that is well made and stable and doesn't require fork braze ons?
robow is offline   Reply With Quote
Old 05-20-16, 11:21 AM   #7
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
No I didn't. I thought the issue with a carbon/aluminum fork was more the material not being up to the weight than the lack of braze-ons. The fork actually has eyelets down by the quick release lever for the front tire and I did see clips on Jandd site for bikes that didn't have braze-ons but I was more worried about stressing the carbon fork dangerously.
elizwlsn is offline   Reply With Quote
Old 05-20-16, 11:25 AM   #8
rhm
multimodal commuter
 
rhm's Avatar
 
Join Date: Nov 2006
Location: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Posts: 15,654
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Quote:
Originally Posted by elizwlsn View Post
I have no clue.... in case it's no obvious I have no clue....
Oh, ah, well, fair enough!

You can go to a bicycle frame builder and have him/her build you any fork you want, probably for less than $500. If that isn't appealing, you have to restrict yourself to something readily available, and you should not make any assumptions about what is readily available.

Someone who works at the LBS will most likely know more than you; but you should not assume they know everything. @robow's suggestion sounds pretty good to me! But I'd need to know more about your existing fork to know what can be fit on it.
__________________
New leather for old saddles.
rhm is offline   Reply With Quote
Old 05-20-16, 01:49 PM   #9
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by elizwlsn View Post
After round and round about getting a new bike or upgrading/changing out either of my existing bikes and visiting a number of LBS to see what is available for touring with my budget in mind I've decided to go with my Sirrus Comp. I'm over wanting to get a trekker bar, opting instead for the ergon gp5 grips, ordered a Jandd expedition rack because it's 3" longer and rated for 75lbs thus eliminating heal strike and the need for front racks. But what about just changing out the carbon/aluminum forks for aluminum?

I know you have better control with weight on the front too and I do have a large handle bar bag that is always full but my question is why not? I'ld have the brazons needed and no fear of carbon failure. Why isn't this a good idea? I don't mind investing a few hundred dollars to do this if that's what it costs but is there another reason not to other than $$$.
What year is your Sirrus Comp? V-Brakes? Disc Brakes?
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 01:56 PM   #10
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Biketouringhobo View Post
What year is your Sirrus Comp? V-Brakes? Disc Brakes?
2006 with V brakes
elizwlsn is offline   Reply With Quote
Old 05-20-16, 02:04 PM   #11
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rhm View Post
Oh, ah, well, fair enough!

You can go to a bicycle frame builder and have him/her build you any fork you want, probably for less than $500. If that isn't appealing, you have to restrict yourself to something readily available, and you should not make any assumptions about what is readily available.

Someone who works at the LBS will most likely know more than you; but you should not assume they know everything. @robow's suggestion sounds pretty good to me! But I'd need to know more about your existing fork to know what can be fit on it.
[TABLE="class: DetailsView"]
[TR="class: FieldHeaderTitle"]
[TD="colspan: 2"]Frame & Fork[/TD]
[/TR]
[TR="class: row"]
[TD="class: FieldHeader"]Frame Construction[/TD]
[TD]TIG-welded[/TD]
[/TR]
[TR="class: AlternatingRow"]
[TD="class: FieldHeader"]Frame Tubing Material[/TD]
[TD]A1 Premium Aluminum[/TD]
[/TR]
[TR="class: row"]
[TD="class: FieldHeader"]Fork Brand & Model[/TD]
[TD]Specialized FACT carbon[/TD]
[/TR]
[TR="class: AlternatingRow"]
[TD="class: FieldHeader"]Fork Material[/TD]
[TD]Carbon/aluminum, aero crown Just pulled these specs online on that fork.
[/TD]
[/TR]
[/TABLE]
elizwlsn is offline   Reply With Quote
Old 05-20-16, 02:43 PM   #12
robow
Senior Member
 
robow's Avatar
 
Join Date: Aug 2005
Bikes:
Posts: 2,646
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
I appologize for posting this photo again but I did run an Old Man Mountain rack on a carbon fork with aluminum steerer mounted by the V-brake bosses for a few years with zero problems. YMMV

robow is offline   Reply With Quote
Old 05-20-16, 02:52 PM   #13
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by elizwlsn View Post
2006 with V brakes
Pics of your bike at Fork and Headset
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 02:57 PM   #14
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Forks at
https://www.bikeman.com/
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 03:02 PM   #15
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by robow View Post
I appologize for posting this photo again but I did run an Old Man Mountain rack on a carbon fork with aluminum steerer mounted by the V-brake bosses for a few years with zero problems. YMMV

Very Cool! Which one was that? I looked online and found 4 but didn't know which one I should get. Love your trekker bars too!
elizwlsn is offline   Reply With Quote
Old 05-20-16, 03:03 PM   #16
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Biketouringhobo View Post
Pics of your bike at Fork and Headset
I would post them but can't figure out how to now that they took away the "upload from your computer" option and you can only do it from an url
elizwlsn is offline   Reply With Quote
Old 05-20-16, 03:19 PM   #17
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by elizwlsn View Post
I would post them but can't figure out how to now that they took away the "upload from your computer" option and you can only do it from an url
me too
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 03:29 PM   #18
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by robow View Post
I appologize for posting this photo again but I did run an Old Man Mountain rack on a carbon fork with aluminum steerer mounted by the V-brake bosses for a few years with zero problems. YMMV

how did you load the pics? i can't load any pics
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 03:53 PM   #19
robow
Senior Member
 
robow's Avatar
 
Join Date: Aug 2005
Bikes:
Posts: 2,646
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by elizwlsn View Post
Very Cool! Which one was that? I looked online and found 4 but didn't know which one I should get.
It was the Sherpa model for 26" wheels.

As to posting photos, one needs to use a photo hosting site like "Photobucket" in order to gain an image address or URL. Have they changed their options for posting photos here at Bikeforums, I was thinking there were more options before.
robow is offline   Reply With Quote
Old 05-20-16, 04:12 PM   #20
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by robow View Post
It was the Sherpa model for 26" wheels.

As to posting photos, one needs to use a photo hosting site like "Photobucket" in order to gain an image address or URL. Have they changed their options for posting photos here at Bikeforums, I was thinking there were more options before.
They have changed it so you can no longer just upload from your computer. I would love to see a full photo of your bike. It looks amazing! I also found front racks at Jandd that don't require a braze-on. I ordered their expedition back rack today because it's 3" longer. Wish I had this conversation earlier; I would have gotten the front one at the same time. Just was worried about weight on that fork.

Bike Racks
elizwlsn is offline   Reply With Quote
Old 05-20-16, 04:23 PM   #21
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by robow View Post
It was the Sherpa model for 26" wheels.

As to posting photos, one needs to use a photo hosting site like "Photobucket" in order to gain an image address or URL. Have they changed their options for posting photos here at Bikeforums, I was thinking there were more options before.
I joined photobucket i still can't load photo
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 04:30 PM   #22
Biketouringhobo
Banned.
 
Join Date: Jul 2015
Location: Riverside, CA
Bikes: Surly LHT 26in 52cm 2008
Posts: 898
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by elizwlsn View Post
They have changed it so you can no longer just upload from your computer. I would love to see a full photo of your bike. It looks amazing! I also found front racks at Jandd that don't require a braze-on. I ordered their expedition back rack today because it's 3" longer. Wish I had this conversation earlier; I would have gotten the front one at the same time. Just was worried about weight on that fork.

Bike Racks

I love my Jandd Racks and I joined Photobucket i still can't load my Photos
Biketouringhobo is offline   Reply With Quote
Old 05-20-16, 05:14 PM   #23
elizwlsn
Senior Member
Thread Starter
 
Join Date: May 2016
Location: Palmyra, Virginia
Bikes: Specialized Sirrus Comp 2006, Diamondback Ascent Ex 1989
Posts: 55
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Biketouringhobo View Post
I love my Jandd Racks and I joined Photobucket i still can't load my Photos
I'm sure I'll like my Jandd rack and I've used their panniers and grocery bags for years and loved them. Some people say use flicker for the photo's. Lots of good info btw on your facebook page!
elizwlsn 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 07:31 PM.