Wide range 105 options?
07-23-15, 07:44 AM
#1
wears long socks
Thread Starter
Wide range 105 options?
I want to build a wide range gearset using 105 (5700) derailleurs.
If I run a double crank, 50-34, can I get the GS 105 derraileur to work on a 11-32 cassette?
The specs seem like I can't, but in real life, will it work?
If I run a double crank, 50-34, can I get the GS 105 derraileur to work on a 11-32 cassette?
The specs seem like I can't, but in real life, will it work?
Last edited by 69chevy; 07-23-15 at 08:10 AM.
07-23-15, 08:01 AM
#2
Senior Member
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,848
Bikes: Schwinn Varsity
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1931 Post(s)
Liked 742 Times
in
422 Posts
50 with 11 on the back is 120 inch.
You need that?
I think it will work with the long cage, but I don't have the specs in front of me.
Maybe use 11-28 instead?
You need that?
I think it will work with the long cage, but I don't have the specs in front of me.
Maybe use 11-28 instead?
Last edited by trailangel; 07-23-15 at 08:15 AM.
07-23-15, 08:09 AM
#3
wears long socks
Thread Starter
07-23-15, 08:14 AM
#4
Member
Join Date: Jul 2014
Location: Vermont
Posts: 43
Bikes: 80s Ciocc Designer '84 Rival, All City Space Horse w/mostly Velo Orange Grand Crux touring parts, steel mtb with mechanic scavenged group, '73 Raleigh Super Course w/braze on canti bosses and a 700c Sturmey Archer 3 speed wheelset
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Should work. I'm running a 12-34 and a 48-38-20something on my touring bike (don't have it nearby and can't remember the gearing exactly) and it has no problems. I did have to reverse the b-hanger bolt, though, but I've put about 1,000 miles on it this spring/summer and it's been fine. I'd think the 32 would be fine.
07-23-15, 08:16 AM
#5
Senior Member
The difference is important because the 5701 has a larger max cog. I run a 12-30 on a RD-5701 SS. The GS version of the RD-5701 can take a 32T.
https://www.chainreactioncycles.com/u...h/rp-prod85966
07-23-15, 08:39 AM
#6
wears long socks
Thread Starter
Do you have a 5700 GS or a 5701 GS? EDIT: Sorry, you're buying... make sure to get the RD-5701!
The difference is important because the 5701 has a larger max cog. I run a 12-30 on a RD-5701 SS. The GS version of the RD-5701 can take a 32T.
Shimano 105 5701 10 Speed Rear Mech | Chain Reaction Cycles
The difference is important because the 5701 has a larger max cog. I run a 12-30 on a RD-5701 SS. The GS version of the RD-5701 can take a 32T.
Shimano 105 5701 10 Speed Rear Mech | Chain Reaction Cycles
Last edited by 69chevy; 07-23-15 at 08:43 AM.
07-23-15, 08:50 AM
#7
Senior Member
EDIT when running 34-11, you're 1 tooth over the maximum difference of 22T. Should be fine, plus why would you run cross chaining like that?
07-23-15, 08:56 AM
#8
wears long socks
Thread Starter
I know, I know, but this gearing is going on a bike that doesn't see a lot of hills, and may get a single 50t track crank and lose the front gearing all together.
07-23-15, 08:58 AM
#9
Senior Member
Right, 50-34 is only a difference of 16T, so that's no problem for capacity.
07-23-15, 10:20 AM
#10
Banned
chain length slack takeup is better when the RD cage is Longer .. so short cage RD may need replacing.
07-23-15, 01:39 PM
#11
wears long socks
Thread Starter
Thread
Thread Starter
Forum
Replies
Last Post
ypsetihw
"The 33"-Road Bike Racing
40
11-01-16 06:12 PM
bamacrazy
Cyclocross and Gravelbiking (Recreational)
4
05-16-10 12:07 PM
