Just had this in the workshop last thing that. On a Cannondale synapse. The internally routed cable for the disc brake had rubbed on the axle and cut straight through! Just posting more for interest!
Where is the image
I've wondered about that being possible in the past - wow
Led to the nds bearing coming out at an angle and cracking the BB shell. Frame a write off
Unlucky!!
(I reckon it's the only good use for those plaggy shrouds on BBs that Shimano supply)
Totally agree, would have saved this
Thats both impressive and worrying at the same time
That's a Cannondale axle
What state is the brake cable in?
There are similar pictures out there of fork steerers caused by headset routed hoses and cables. I'm not on Instagram so I can't look for them there.
The consequences of having your fork steerer snap on a big impact because it's been sawn away by your gear cable isn't worth thinking about.
A pal had an Xt HT2 crank that squeaked a bit. Always a case of going to sort it next week. One ride the axle just shredded and pulled out in a massive spiral of very sharp mega swarf. I think a bearing had seized and cause wholesale destruction.
I've got a Cannondale synapse with an internally routed brake hose😱
Might be time to investigate
Definitely have that crank out
What is the benefit gained from internsl cable routing which outweighs more awkward servicing and this presumably small risk of shredding BBs and forks?
What state is the brake cable in?
Virtually unmarked
Interesting failure. Just to clarify, because I'm unfamiliar with the bike involved: was it a brake cable or hydraulic hose and, if the former, was the inner cable run within an outer cable housing through the frame, or with no housing and thus under tension between two points within the frame (does that make sense)?
What is the benefit gained from internsl cable routing which outweighs more awkward servicing and this presumably small risk of shredding BBs and forks?
Aerodynamics and looks. It makes sense for summer road bikes as all the problems are easily mitigated. I'd not want it on a bike used in winter/wet mud.
I don't see how summer or winter bike makes any difference. Lots of CX bikes are internally routed and it helps reduce places the mud can catch making cleaning easier.
Aren't these Cannondales in particular a bit prone to this? I've certainly seen it a few times before.
I don't see how summer or winter bike makes any difference. Lots of CX bikes are internally routed and it helps reduce places the mud can catch making cleaning easier.
BITD of cable brakes, everything rearward was routed on top of the top tube (so you could still shoulder the bike comfortably) then along the seat tube and seat stays (as appropriate)
Internal cabling is an unnecessary faff IMHO
What is the benefit gained from internsl cable routing which outweighs more awkward servicing and this presumably small risk of shredding BBs and forks?
Aerodynamics and looks. It makes sense for summer road bikes as all the problems are easily mitigated. I'd not want it on a bike used in winter/wet mud.
Not for me than as looks are not a priority and any aerodynamic effect would be drowned by my permanently fixed pannier and flappy jacket.
What state is the brake cable in?
Virtually unmarked
Interesting failure. Just to clarify, because I'm unfamiliar with the bike involved: was it a brake cable or hydraulic hose and, if the former, was the inner cable run within an outer cable housing through the frame, or with no housing and thus under tension between two points within the frame (does that make sense)?
Brake cable with compressionless housing.
Aren't these Cannondales in particular a bit prone to this? I've certainly seen it a few times before.
Yes mate, the outer runs over the top of the spindle and as it's pf30 no central tube to protect it
What is the benefit gained from internsl cable routing which outweighs more awkward servicing and this presumably small risk of shredding BBs and forks?
My carbon cannondale synapse has internal routing, my loser allow one has external.
I haven't found a single advantage.
- More aero- I'm unlikely to lose a grand tour by 5watts.
- Better looking- external just looks like a bike with cables. Not an ugly bike.
- Rattling- external rattles are easily delt with. My rear brake makes a massive CRACK! Over sharp bumps. To sort it the solution has been an ugly wrap of insulating tape where it enters the frame.
It takes an unreasonable amount of faff to do a gear cable change. Took over an hour last time for one great cable. Takes 10 min on the externally routed frame including 5 min getting the bike out and putting it away.
If I ever buy another road bike it's external routing only for me.
Last time I snapped a cable I had 30 miles home with the cassette in the middle and big/ small rings to chose from.
External routing (for me)= the work of the devil/ marketing team
Interesting, was a bloody tight fit on the s/h Synapse frame* I bought earlier this year, tempted to take it out & get some of those jagwire adhesive cable clips & run it external.
Compressionless cable but fitted Shimano chainset with plastic tube so might not be an issue however cable routing seems really crap.
I don't see how summer or winter bike makes any difference.
It's warmer to walk home in the summer?
It is vanity for the consumer - there is zero aerodynamic benefit on a MTB; for the manufacturer - easier to make a hole than get something sticking out the tube to attach a cable to.
I just think it is a daft faff, but suspect I'm in a minority, which is fine.
All 3 of my bikes have internal cabling and I hate it (although admittedly it does look better). They all also route through the stem and even changing that to external ends up looking like a bodged mess with a gaping hole through the headset spacers as manufacturers give very consideration to anyone wishing to at least change that part.
****in ell, that's nasty.
Glad to hear it's particular to that kind of design and PF30. I was struggling to visualise it until I saw the clip 😱