Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the September Giveaway for 29" Giordano® Intrepid Mountain Bike valued at $659


Upgrading from twin to triple rings
#1
Hi guys,

I have a campagnolo veloce 172.5 crank with a twin set of rings but want to change to a triple set as I live in a hilly area.

I have seen a second hand campagnolo veloce 170mm triple crank I am considering buying. Would this be compatible with my existing or do I need more stuff?

The same guy has the front derailleur for sale although I have read that campy derailleurs are twin or triple compatible.

Any feedback would be appreciated

Cheers
  Reply
#2
Hello again. now for your triple conversion. I would suggest looking into what campy has for Touring in the lineup. It may be more cost effective to replace the rear derailluer, larger rear cluster, and if the front derailluer can handle a 2 tooth drop on the inner ring just may give you an acceptable gear ratio if not just by changing the rear cluster alone.
If you put a triple up front you may need to change your bottom bracket and your shifter, then bar tape and possibly the front derailluer as opposed to rearcluster/chain/rear derailluer
I would try that combo first, ride it and if I needed a pinch more then drop the inner ring 2 teeth. plus more time in the saddle the hills get easier
Just a thought, mull it over and maybe someone else will chime in
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
Yep 10-4 to what PK said smaller inner ring and bigger rear cluster . Ride the bike for a while and determine what exactly you need .

For now I recommend cleaning and greasing all bearings, shifters and cables, etc, so you know it was done and have a start date.

Nice bike BTW......I think 250L is close to $500 USA
Never Give Up!!!
  Reply
#4
Cheers guys, the rear derailleur is on a 9 speed indexed shifter built into the brake levers.

The reason I was looking at the triple front ring is I have seen one on eBay for literally pennies and think it is worth the punt, the guy is selling the front derailleur too. The front shifter is non indexed so should be ok with the change, it's just the crank length is 170mm whereas my existing is 172.5mm and also that the BB matches, although the existing is campy veloce so is the one I'm hoping to purchase. Hopefully they will match. Will the 2.5mm make that much difference?

I'm not with my bike currently as we are away I'm not sure what my current chainring sizes are but from looking online i would guess they are 53/39 and the triple I have seen on eBay is 30/40/50t. If these are the sizes, do you think the chain and gear ratios would be ok?

Cheers for all the advice guys.

George: I think £250 is about $400 which makes it an even sweeter purchase?? Smile
  Reply
#5
the 170mm crank would be fine, but you need the model # of the crank you are looking @ to spec the proper spindle length. I would suspect you would also need to change the BB for the mod that you want.
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#6
Ahh ok, I'll bare this in mind.

Cheers dude.
  Reply
#7
(12-30-2012, 06:06 AM)Bushyuk Wrote:  The front shifter is non indexed so should be ok with the change,
Really? That sounds... weird to me. I would have thought the front shifters to be indexed, too. Plus the shifters need to pull more cable to reach the tird chain ring. Try to find out if there's some hidden setting under the hoods to change from two to three chain rings.

Quote: it's just the crank length is 170mm whereas my existing is 172.5mm and also that the BB matches, although the existing is campy veloce so is the one I'm hoping to purchase. Hopefully they will match. Will the 2.5mm make that much difference?
That depends. I have bikes with crank arms from 170mm - 175mm and I cannot really tell a difference (but I have not really focused on finding some). You will be able to spin faster on a 170mm.

Quote:I'm not with my bike currently as we are away I'm not sure what my current chainring sizes are but from looking online i would guess they are 53/39 and the triple I have seen on eBay is 30/40/50t. If these are the sizes, do you think the chain and gear ratios would be ok?

Depends what you want, where you ride etc. Climbing up to the Tiefenbachferner in the Austrian Alps I really needed the triple (30 - 27 I think)... The chain should be ok, the capacity of the rear dérailleur might be too small, though, to handle the additional difference of 9 teeth.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
8,072
03-13-2020, 02:05 AM
Last Post: Jesper
 
69,182
01-09-2016, 12:50 AM
Last Post: Bill
 
13,727
02-26-2014, 12:19 PM
Last Post: nfmisso
 
9,659
01-24-2014, 12:51 PM
Last Post: nfmisso

Forum Jump:

[-]
10 Latest Posts
Sepp Kuss wins Vuelta 2023
Today 05:02 PM
Glad to be here
Today 04:53 PM
SHIMANO Reamed by US Authorities for sel...
Today 02:01 PM
e-moped offerings.
Today 11:51 AM
How to refurbish a bicycle 101
Today 10:48 AM
Reasons to buy aluminium not carbon bike...
Yesterday 04:25 AM
Why Are So Many Mountain Bikes Going To ...
Yesterday 04:18 AM
Broken Kids Bike need help.
09-22-2023 06:57 PM
1987 Specialized Stumpjumper
09-22-2023 07:25 AM
Colnago restoration
09-22-2023 05:47 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ichitan
45 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. Talha
13 posts
no avatar 4. Painkiller
13 posts
no avatar 5. enkei
12 posts