Can anyone advise. Purchased a Giant SL Advanced ISP 6 weeks ago. Whilst on the bike the cable of the Di2 derailleur caught in cassette, broke derailleur hanger and slammed into frame, throwing me off the bike across the road. Bike went back to Giant this week and they said they could not replicate the problem!! It had to be a gear problem and they wouldn't cover the warranty claim. When it broke, there was no clicking, no gear changing just a snap. The bike was supplied to me minus the rubber grommets that keep the cables in place and the shop have been trying to secure a full set for me for 6wks. I am now left with a destroyed £4300 bike and I have to do a charity bike ride from London to Paris in three weeks. I have got my lawyers on to the case but does anyone have any helpful thoughts on the way forward? HELP!
Shimano only warranty damage to internal Di2 cables which have fitted with the grommets, without grommets being fitted the cable has a high risk of chaffing and damage, Di2 connectors are only considered to be water resistant and not waterproof and you have an ingress for water without the grommets being fitted which can only exit around the area of the BB where the junction box is.
When I did my first MTB Di2 conversion, it featured no grommets and the movement of the rear mech and the vibration of the bike slowly pulls any access cable through the hole which is why you ended up with excess around the rear mech, I have seen this with my own eyes. Equally you can not replicate this issue when the bike is stationary as you need both the vibration and the mech movement you have to ride it, its not fast and happens over a period of time.
Sounds like Giant sold you a bike not fit for purpose imho.. I would have rejected it myself at £4300 I want everything perfect.
The fact they do not wish to support a product which they provided incomplete I think is pretty poor form.... I think its worse that they felt it was OK to give their customer an incomplete bike.
Crankarm's advise however is the one you should follow from a legal perspective. imho