Need a rear light, but...

[MikeW-71]

It has to fit an aero seatpost properly.

The Defy Advanced has one of these seatposts. All the rear lights I've bought so far have mounts designed to fit round seatposts. They are fine for the alu bike, but I don't see them staying put on the carbon one.

Can anyone recommend a rear light that will mount properly? It doesn't need to be immensely powerful, it's more just to be seen with if I'm taking the carbon bike out at night.

 

[L14M]

Most you can mod to fit a aero seatpost?

 

[MikeW-71]

Quite possibly, though if there is something that would fit better I'd be interested.

 

[L14M]

Yeah I agree, are these lights to encase you get caught out or are they going to be for regular night use?
Liam

 

[400bhp]

Fit it on one of the rear triangle blades.

 

[MikeW-71]

I'll test one of my existing ones on the rear triangle. If it doesn't fit I could always get two smaller ones and put them each side...

It's mostly for if I get caught out, but I may want to do proper night rides with it too.

 

[mattobrien]

I have got a knog skink which fits around my non round seat post easily, the mount being rubber and stretches around the seat post fine.

 

[GrumpyGregry]

Lezyne and Bontrager ones fit with o rings, and Cateye do a mount, as a spare, that is like a rubber jubilee clip and will fit any profile of post.

 

[the_mikey]

It has to fit an aero seatpost properly.

The Defy Advanced has one of these seatposts. All the rear lights I've bought so far have mounts designed to fit round seatposts. They are fine for the alu bike, but I don't see them staying put on the carbon one.

Can anyone recommend a rear light that will mount properly? It doesn't need to be immensely powerful, it's more just to be seen with if I'm taking the carbon bike out at night.

Did the bike come with a reflector kit? My giant came with a reflector that fitted around the Vector seatpost, it could be possible to modify the reflector mount, alternatively look for lights with a flexible plastic or stretchy silicone post mount. Exposure flare? Lezyne Zecto drive, or any number of lezyne rear lights have a stretchy silicone seat post mount.

Alternatively, consider a fibreflare light and install it on the seat stays instead?

I have a very small saddle pack under my seat which has a loop for attaching lights on, I use that.

 

[junkie_ball]

I have a friend with a full carbon frame and he uses one of these lights (http://www.evanscycles.com/products/fibre-flare/full-size-rear-light-ec034297) fitted to the rear triangle. Its a really effective light.

 

[buggi]

I've got a lezyne one with a rubber mount. Small but very bright. Got it from Halfrauds for about a tenner. Wraps round any part of the bike and also has a clip for fixing to saddle bags etc.

 

[shouldbeinbed]

if you don't have a saddle pack you could use a saddle rail mounted one.

 

[Cuchilo]

Giant sell them . Three modes and very bright . Charges from a USB port in 2 hours and was about £20 - £25 .
It comes with two rubber fittings that slip behind the mount for different size seat posts .

 

[PaulSecteur]

If its a cateye or exposure light you have then why not a saddle rail mount? (unless you use a saddlebag)

Cateye...

http://www.evanscycles.com/products...match__plid_&gclid=CLKj3qDtq7wCFSTMtAodbykADw

Exposure

http://www.evanscycles.com/products/exposure/flare-saddle-rail-mount-ec030112