Seat post rack.

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shouldbeinbed

Rollin' along
Location
Manchester way
No, I wonder (no engineer tho) if that would put an even greater stress on the seatpost where it is clamped, if you've created a rigid link to the seat rails, every bump and hump and body movement transmitted into the saddle would then be transmitted horizontally into the seatpost via that clamp set up as well as via the normal frame flex and your body movement putting a vertical compression into it. When adding a tour pannier set up jiggling too???

Dunno tho, just an idle thought.
 
Location
Loch side.
That looks like a very workable solution. Where I live I see plenty of cyclotourists and a good percentage of them have seatpost-attached racks but without the saddle strut like yours in the picture. Those without swing around and I often see them half sideways. There is no way of tightening them enough to prevent moving when loaded. The strut looks like a sensible way of preventing swing-around. The seatpost is plenty strong, so don't worry about crushing an aluminium one. Don't even think carbon though.
 

Simon_m

Guru
When touring I use this, others on here recommend Carradice too. Great quality, different sizes and British made:

0076.jpg
 

Ajax Bay

Guru
Location
East Devon
This Arkel rack does not clamp to the seat post; the strut rests on the back of the seat post and is secured with velcro. There will be a force at that point but it's spread over 2cm (say) and just a 'normal' one, not like the clamped version which has to be clamped tight enough to provide the vertical force to support the weight carried and applies a bending moment to the post (carbon posts therefore a 'no, no'). It will mount higher than a normal seatpost rack for most people who are running the modern style of longer exposed seatpost - even more difficult to get one's leg over it (ack 'Jonners' double entendre). 'Tis expensive.
 

steveindenmark

Legendary Member
Yes I do use one but I would rather chew my arm off than pay €95 for a seat post rack. Especially one you cannot put panniers on.

This is my carbon road bike last week. It has front roller panniers but this rack will take rear panniers. I got the rack off Amazon and I think it cost about £15. I will double check that. It works great and takes 10 seconds to take off.

I think this is mine.


RSP Pioneer Urban Alloy Rear Carrier - Black, 10 Kg


20160414_092649_zpspr9ulh0d.jpg
 
Yes I do use one but I would rather chew my arm off than pay €95 for a seat post rack. Especially one you cannot put panniers on.

This is my carbon road bike last week. It has front roller panniers but this rack will take rear panniers. I got the rack off Amazon and I think it cost about £15. I will double check that. It works great and takes 10 seconds to take off.

I think this is mine.


RSP Pioneer Urban Alloy Rear Carrier - Black, 10 Kg


20160414_092649_zpspr9ulh0d.jpg
That looks great, what bag are you using? Does it have a tendency to rotate around the seat post or is it immovable once on?
 

steveindenmark

Legendary Member
Usually I use Ortlieb but those are from Biltema in Denmark. They are just as good as Ortleib but a quarter of the price. The rack came with a big rubber mount and stays still.
 
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