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-   -   Backpack on Brompton S-type carrying frame? (http://www.bikeforums.net/folding-bikes/914405-backpack-brompton-s-type-carrying-frame.html)

aoeuaoeu 09-22-13 07:27 PM

Backpack on Brompton S-type carrying frame?
 

Whaddaya say? Anyone tried strapping an average college backpack to the s-type frame? Trying to avoid bag proliferation in my apartment...

bargainguy 09-22-13 08:20 PM

2 Attachment(s)
http://bikeforums.net/attachment.php...hmentid=342284http://bikeforums.net/attachment.php...hmentid=342285

Not a backpack, but I recently found this Gap shoulder bag at a rummage sale for $4.

It already had a strap with a quick-connect on the back which I threaded through the rack frame.

I took a couple velcro loops to help secure the top of the bag to the rack.

jur 09-22-13 09:19 PM

Backpacks generally hang way too low. It would interfere with the front wheel unless you took specific measures to prevent that. Maybe if you strapped it horizontally it might work. Might be inconvenient removing it.

I hang a small backpack off a dowel cable-tied to the saddle rails. Very cheap but effective. This method was invented by Russ Roka of pathlesspedaled and also used by others here. This method does not interfere with the fold, although I do remove the pack when folding fully to prevent the chain from soiling the pack.

jur 09-22-13 09:28 PM

http://www.youtube.com/watch?v=4c76T3g5wwY

My pack being small does not reach to the rack (which I don't have on anyway), but I use a small sternum strap to attach it to the seatpost to limit it from swinging wildly about when hammering.

This method is so cheap and convenient I now use it on all my bikes, as this allows me to "standardize" on one backpack.

aoeuaoeu 09-22-13 10:13 PM

Quote:

Originally Posted by jur (Post 16093963)
http://www.youtube.com/watch?v=4c76T3g5wwY

My pack being small does not reach to the rack (which I don't have on anyway), but I use a small sternum strap to attach it to the seatpost to limit it from swinging wildly about when hammering.

This method is so cheap and convenient I now use it on all my bikes, as this allows me to "standardize" on one backpack.

Cool. I shall try this and post results...

fietsbob 09-23-13 10:12 AM

just keep the bag from interfering with the handlebar turning , and the brake levers getting in the way.

you may need some creativity to support the bottom of the bag from dragging on the tire where it may overlap that center support.

Maybe the back pack can have a stiffener in Its bottom.

Im using a Messenger Bag on my B rack. un clip and shoulder the bag with the rack attached to it.

aoeuaoeu 10-04-13 10:45 PM

1 Attachment(s)
Hmm dowel doesn't seem to be working too well. The length of my backpack combined with saddle's fore-aft position is causing a few inches of heel strike. Any ideas on spacing it farther away from the seat post, besides moving my saddle (which gives pretty comfortable pedaling atm)?

http://bikeforums.net/attachment.php...hmentid=344281

jur 10-05-13 04:16 AM

Ah yes, the heelstrike. I forgot about that, my pack is small so I just get away with it. I did mess around at one stage with a roll made from light packing foam strapped to the seatpost to space the pack away from the seatpost clamp on my Moulton... it didn't work very well... it also interferes with the seatpost sliding down when folding the Brommie... it is a tough problem to solve, basically you need some form of T-shaped spacer that the pack hangs against. But it needs to be removable for when the bike is to be folded.

Perhaps something can be attached to the pack instead and just quickly velcro'ed to the seatpost to keep it correct while riding. I gave up and strapped some protective foam on the Moulton; the other bikes have long seatposts so this is not a problem.

Perhaps you can find a solution involving the wheels on the rear triangle that the pack rests against when riding.

fietsbob 10-05-13 10:16 AM

maybe Zip tie a basket on , but you have to carry the basket , add wear the back pack ..


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