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PostPosted: Wed May 31, 2017 4:57 pm 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 929
Mine exploded today downhill. No better sight than looking down and seeing an eTap rear mech bouncing along the road under you :shock:

Wheels Manufacturing say theirs is stronger than the original supplied one - not sure if that's a good or bad thing though.

And yes, rode home singlespeed, had a link with me :idea:

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PostPosted: Wed May 31, 2017 6:52 pm 
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Joined: Wed Feb 03, 2010 1:31 am
Posts: 663
I have a Wheels Manufacturing replacement rear derailleur hanger on my touring bike. Original fell over, got bent, bent back into shape, etc. Needed replacement. Wheels fit fine. Of course had to take the Park alignment gauge to it to make sure it was straight after installing. Works fine. Not sure strength, stiffness, etc. matters too much with derailleur hangers. As long as its good enough, its good enough. They only get bent when you crash or drop the bike. The hanger bolts onto the frame. Either aluminum or maybe carbon on the frame. Whichever is weaker will break.


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Posted: Wed May 31, 2017 6:52 pm 


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PostPosted: Wed May 31, 2017 6:56 pm 
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Joined: Sat Apr 18, 2009 8:59 am
Posts: 1003
Location: Surrey UK
How did it happen, RD was caugth in spokes?

_________________
Cervelo S5
Cervelo R5 VWD 5637g/12.43lb
Pronghorn XC SW Race 8284g/18.26lb


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PostPosted: Wed May 31, 2017 8:04 pm 
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Joined: Tue Feb 08, 2011 7:56 am
Posts: 313
Location: California
We use a ton of WM hangers to replace broken OEM ones. In general, they fit well and have done their job without complaints.


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PostPosted: Wed May 31, 2017 8:15 pm 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 3287
Wheels manufacturing.

Mate had an S5 (i think) which i could not get indexed right out on a ride. When we got home and popped it up on the stand and checked, it was bent. We tweaked it straight (Only a slight bend).

Just running through the gears, almost zero load was enough for it to begin bending again. I thought maybe the shop had been swinging on it when they built the bike (it was only a few months old)
So we fitted the spare he got with the bike, that was actually perfectly straight once fitted.

Running through the gears caused the same thing to happen again the hanger bent simply due to shifting loads. I said a bad word.

I've been doing this for nearly 30 years, and worked on some right shitty pieces of junk, but i've never seen a hanger that soft.

The WM hanger he bought to replace it did another 18 months, a couple of ironmans and when he eventually went down the road, it broke as designed.
And he then couldn't find the second one that he'd put in a safe place.

I said another bad word :wink:


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PostPosted: Thu Jun 01, 2017 2:56 am 
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Joined: Fri Feb 08, 2013 10:09 am
Posts: 58
Location: Melbourne, Australia
I was having trouble with the notoriously crap OEM hanger on my 2012 Cervelo R3. It would bend if I looked at it sideways, so I had it replaced with a WM version. It's been OK thus far!

_________________
Focus Cayo - Ultegra 6800 - HED Belgium +
Giant TCX Advanced Pro 2 - 105 5800 (XT rear derailleur w/40T)
Cervelo R3 - Ultegra 6800 - Campagnolo Zonda


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PostPosted: Thu Jun 01, 2017 6:03 am 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 929
Mixed bag of reviews, typical! Thanks guys, fine I'll just have to try it and see then, picking one up tomorrow, had to order it in there.

@1415chris nothing dramatic, I reckon it just weakened over time. Couldn't index the bike right on the past couple of rides, the chain kept skipping on two cogs. Thought it was chain wear and was going to measure it this weekend. I think messing around with the 32 cassette a few days back was what done most of the damage, though when it snapped it was just after an uneventful 12 mile TT (on an 11-28), was just rolling home downhill and off it went.


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PostPosted: Thu Jun 01, 2017 12:00 pm 
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Joined: Sat Nov 22, 2014 1:12 pm
Posts: 118
Cervelo hangers are well known to have the strength of butter, I'm now the proud owner of a park hanger alignment tool purely as my R5 needs fairly consistent hanger adjustment. I'd be very tempted to try someone else's on the basis that it couldn't really fail to be an improvement.


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PostPosted: Thu Jun 01, 2017 12:10 pm 
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Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1867
Location: Welland, Ontario
Quote:
my R5 needs fairly consistent hanger adjustment


I would suggest you replace that immediately with the Wheels version. You have a nasty accident waiting to happen at any time soon. These cheesy hangers don't like being "adjusted".

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM


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PostPosted: Thu Jun 01, 2017 2:03 pm 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 929
Stueys wrote:
Cervelo hangers are well known to have the strength of butter, I'm now the proud owner of a park hanger alignment tool purely as my R5 needs fairly consistent hanger adjustment. I'd be very tempted to try someone else's on the basis that it couldn't really fail to be an improvement.



On a scale of 1 to 10 how hard is it to adjust your hanger yourself? Wondering if I should get a tool and have a shot myself or not.. Chances of it being perfectly straight right after fitting probably isn't great I'm guessing..

This is your tool?
http://www.chainreactioncycles.com/park ... 7C546386UK

Need anything else to do the job?


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PostPosted: Thu Jun 01, 2017 2:26 pm 
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Joined: Tue May 23, 2006 9:39 pm
Posts: 1055
my friends Cervelo had similar issues. seems that the metal is very soft. WM replacement worked great and still holding out.

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- AX Lightness Vial EVO D + DA9070 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9070 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


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PostPosted: Thu Jun 01, 2017 2:29 pm 
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Joined: Tue May 23, 2006 9:39 pm
Posts: 1055
Shrike wrote:
Stueys wrote:
Cervelo hangers are well known to have the strength of butter, I'm now the proud owner of a park hanger alignment tool purely as my R5 needs fairly consistent hanger adjustment. I'd be very tempted to try someone else's on the basis that it couldn't really fail to be an improvement.



On a scale of 1 to 10 how hard is it to adjust your hanger yourself? Wondering if I should get a tool and have a shot myself or not.. Chances of it being perfectly straight right after fitting probably isn't great I'm guessing..

This is your tool?
http://www.chainreactioncycles.com/park ... 7C546386UK

Need anything else to do the job?


i have a Abbey Tool DAG. most do the job. anything to make sure the hanger is aligned properly. i use it quite often even after initial straightening....and check periodically. odd that it does go out of align after a season or two. good to have.

_________________
- AX Lightness Vial EVO D + DA9070 + Enve SES 3.4 carbon hubs
- Parlee Altum + DA9150 + Enve SES 4.5 carbon hubs
- Parlee ESX + DA9070 + THM SRM PM + Enve SES 6.7 CK hubs
- Independent Fabrication Ti FLW + Campy SR11 + Enve 3.4 CK hubs


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PostPosted: Thu Jun 01, 2017 2:36 pm 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 929
@kode54 sounds like I should have had one of these already :P

Fine, I'll grab a tool, see what's on sale nearby, want to get this done tomorrow night and ready for the weekend or else I'll be stuck on Zwift :?


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PostPosted: Thu Jun 01, 2017 8:20 pm 
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Joined: Wed Feb 03, 2010 1:31 am
Posts: 663
Shrike wrote:
On a scale of 1 to 10 how hard is it to adjust your hanger yourself? Wondering if I should get a tool and have a shot myself or not.. Chances of it being perfectly straight right after fitting probably isn't great I'm guessing..


Now that I have a rear derailleur alignment tool, I think its an almost essential tool. Of course I managed fine for many years without one. Use it sometimes now. Not often, but when its needed, its the only thing that will work. Easy to use. Not sure what a shop would charge you to go in and have them check/bend the hanger into alignment. $20 ??? No, the new hanger will not be perfectly aligned when you install it. It may be perfectly straight. But you don't know if your frame, hanger mounting point is also perfectly straight. If the frame is bent, out of alignment, then you need to bend the hanger so both combined end up perfectly straight for the derailleur to bolt on. Think of it like a new baseball hat. When you first buy it, It probably won't be a perfect fit. You have to adjust the cap to fit your head. The hanger is kind of like the hat. You have to make it fit your head/frame perfectly so everything fits perfect when done.


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PostPosted: Thu Jun 01, 2017 8:45 pm 
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Joined: Sun Nov 07, 2010 9:14 pm
Posts: 4749
I really like the Park tool the best. One solid piece of steel, simple gauges. Easy peasy. The thing you have to be careful of is breaking the hanger, or worse, the dropout. Get two hangers when you order from Wheels mfg, just in case. Their hangers are very good quality in my experience. By getting two you will have a spare, providing all goes well with the first one. And yes, Cervelo hangers are not known for their strength. Also, I've seen warnings from both Cannondale and Trek saying do not bend the hanger while on the frame and to take it off first. That would actually involve a whole lot of trial and error and I have never once seen or heard of anyone actually doing this in the real world. That kind of warning is really a cover their ass kind of statement. You need the wheel as a reference and the dropouts should be clamped as they would be when you are out riding. Ensure the wheel is in the dropouts straight when you align the hanger. Make sure it's aligned both vertically and horizontally, especially on a Cervelo which has pretty short chainstays. Good luck.
Oh, and repeated bending really weakens it so try to get it right with as little "back and forth" as possible.

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Colnago C60 - PR99
C59 Five Years Later
My Special Colnago EPQ
Trek Emonda SL Campagnolo SR


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Posted: Thu Jun 01, 2017 8:45 pm 


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