Lost half my gears!

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scook94

Guru
Location
Stirling
Was out on the bike today and noticed after 10-15 miles that I was having trouble getting the chain on the larger front ring.

When I used the shifter, the front mech would move over and the chain would jump onto the ring. However when the shifter went back to it's home position, the front mech would return to the left and the chain would pop down onto the small ring.

It was intermittent at first, and I thought it was just operator error. Sadly it got worse and I ended up doing the last 20 miles with only half of the gears.

Now, it's due to go back to the LBS for it's 1st free service, but this just reminds me how essential it is to be able to do some road side repairs myself.

Is there an adjustment that I could have done that would have allowed the front mech to stay in the RHS position and allow me to use the other half of my gears? Or is this a case where the LBS is definitely required?

TIA (it's a Shimano 105, if that has any bearing)
 

Radius

SHREDDER
Location
London
Presumably if it's due for its first free service it's a new bike? If so, that sounds like cable stretch to me...
(unless it's that issue with the new 105 shifters people have been mentioning)
 
OP
OP
scook94

scook94

Guru
Location
Stirling
Well the bike is back at my LBS. They agree it's a problem inside the shifter, hopefully get it back later this week...
 
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