Seatpost mounted bags?

droidus

I don't want to put panniers on and I cant keep using a backpack, so Ive been looking into these. Ive narrowed it down to a Klickfix 6 litre magnum, or maybe the larger capacity contour sport or tour:



http://www.dotbike.com/ProductsP2080.aspx?utm_source=affiliate&utm_medium=comparison&utm_campaign=PMP



In the other corner there's the Carradice bags which are a bit big and ungainly but get good reviews:




Any ideas anyone?

petethedrummer

I commuted with carradice bag for a while. Did the job. Bike was a bit top heavy as a result but that's gonna happen with any of those bags.

cdaly_

Beware of getting a big bag if you're something of a packrat. I tend to stuff mine completely full whatever size it is...

I currently have a 10l rack-bag with lock, tyre levers, spare tube, repair kit, spare glasses, spare brake and gear cables, spare batteries, minimal toolset, rain jacket, spare reading glasses, first aid kit, one or more bars of choccy,

And then there's the pannier with work clothes, lunch and whatever else I forgot to take out of it...

blorg

I've done some light touring with a saddle-mounted bag on my road bike. It works OK if you are trying to keep it light but I found anything above 3-3.5kg didn't really work great.



Any particular reason you want to avoid panniers? You can put near unlimited weight into them.

droidus

blorg wrote: »

I've done some light touring with a saddle-mounted bag on my road bike. It works OK if you are trying to keep it light but I found anything above 3-3.5kg didn't really work great.



Any particular reason you want to avoid panniers? You can put near unlimited weight into them.

Ive used them before whilst touring and they're fine, but as cdaly_ says - Id probably just fill them and leave them full as Im a total packrat! Plus I dont think they'll mount too easily, and the alfine hub on the back is a bit heavy already so I dont want to add too much weight to the backend.

I think the 6L Klickfix might do me for a change of clothes, the portable HD, some tools and the few other bits and pieces Ill need every day.

The tax man

I have one of these which work on the same frame and mounting as your first picture. I find it fine for my needs ie long all day rides but it's weak point from reading is the amount of weight you have in the bag.Bridging the metal frame and seat post is plastic so it'll have a breaking point.

Something like this and this I think offer more in terms of weight been carried.

Signal_ rabbit

I read somewhere that you can't mount them on carbon seat posts as the posts aren't strong enough. Is this true?

seamus

Signal_ rabbit wrote: »

I read somewhere that you can't mount them on carbon seat posts as the posts aren't strong enough. Is this true?

If the seatpost can take the abuse of an 80kg man bouncing up and down on the road, I'm sure it can take a 3kg pack. The clamp is probably the main issue - you'd really want to protect the seatpost.

I was looking at one of these myself, but the capacity seems somewhat limited when compared to normal panniers.

Can't seem to find any kind of "quick-release" pannier though which can be easily removed for weekend spins.

cdaly_

I have one of these which I picked up for about €40 from Little Sport in Fairview. Clicks off the rack with one button. Has spontaneously jumped off once or twice though I suspect I didn't hang it quite right.