nz6666

I have a s type Brompton, thinking to get a s frame and can I somehow attach a normal backpack (50 L) to the frame? I already got the front carrier block. The reason is s bag is too small for my purpose (planning a tour).

HGR3inOK

Just be aware of the 10kg (~22 pounds) weight limit for the front carrier block and make sure your luggage does not interfere with the steering, braking and gear selection.

-HAN RYAN-
Norman, Oklahoma USA

fietsbob

the backpack standing up on the rear rack works better, Heinz Stuke is world touring on a Brompton rig like that, Now.

Or How about a Bike trailer ? this (NL) one is near perfect. https://www.bikeshophub.com/trailers...er-p-2683.html

I bought a Carry freedom City trailer, featuring a Bag in a frame that you can fold flat ,
Once the bag is worn on Your Body .

And tow the trailer with the Brommy folded up on top of the bag , with your hand.
To say, chase the distant train car down the platform where your seat is ,
then fold up that trailer and slip it between Back To Back Seats.

nz6666

I like the simplicity of one bag and one bike, i.e at train station, I can just carry the pack on my back and one hand for the bike and leave the other hand for things like getting a ticket etc. 10 kg is fine, I used to do some ultra light backpacking, all my stuff (tents, sleeping bag, cooking set etc) with 1 or 2 days food around 10 kg.

I have seen the backpack on rear rack method, that's one option, but I will need to get the rear rack first, plus I would like to put load on the front first, if I will have to carry more than 10 kg I may get a rear rack and start to load the rear.

badmother

My Brompton with a backpack on a C frame (frame is cut back so it is narrower than regular C frame). Think it is a Hagløf XL backpack. Mounted across the frame, top of bag facing the camera.

https://www.flickr.com/photos/778361...posted-public/


My sons B with a "cabin luggage" bag atatched to a regular frame. Good thing about this solution is that it can be rolled with frame still atatched so no need to carry the lugage when not on the bike.

Both lugage options was atatched with two of those straps you use to make sure the suitcase do not open when in use.

https://www.flickr.com/photos/778361...posted-public/

invisiblehand

Maybe what you want is something like a porteur rack on the front of your Brompton and use straps to hold it to the handlebar ...

fietsbob

Less massive than that ..

Seen here : a replacement for Brompton's mounting block made of Aluminum . Asian aftermarket of course.


NB: You can carry a lot of stuff in a Brompton Touring Bag, and use it's shoulder strap, off the bike..



I got one of the Original Brompton Steel Bag supports , then had long tubes brazed on

so as to have a cross bar in front, of a Load space About 9" deep .

Commonly I have a Messenger bag strapped on It . so when I need to carry a Box or something

I put the bag on Me, and strap the Box to the rack.

sdwphoto

Just incase some one else would like to see how to attach a backpack to the rear of a Brompton you can see and read how to do it by googling "the path less traveled on how to attach backpack to rear rack on Brompton".You will get video and a short article to read.(I would have just copied and pasted address ,but this stupid Windows 10 and it's Edge browser does not seem to allow that.God! I miss my old computer!

nz6666

Been away for a few days, I really like this solution. What do you mean a regular frame? You mean your son's B can be folded with that suitcase attached on it? Can your C frame (you mean the frame of a c bag?) B be folded with that pack still on it?

BTW, that suitcase on front, must be impressive for others to see :-)

badmother

Regular frame is a "big" (for M and P bars) frame that is not messed with, not cut back in any way.

Both bikes can be folded with the luggage on. If you have problems doing so it is a problem with balance and weight (bike tipping over becouse the lugage is heavy) not that the lugage bumps into the bike in any way.

Yes, the C frame I used is a smaller frame for a C bar bike that also is cut back (by me) so that it is narrower than a regular C frame. I did this to use it on a non Brompton bag some time back. Here the frame is showed with the bag it was cut back to fit: https://www.flickr.com/photos/778361...posted-public/


We did this a few years ago, can not remember any reaction on the luggagge (only reactions on the bikes).

One more thing we did: We slept in a rented cabin so we did not carry any sleeping gear or tent. When riding around I used the small black and red backpack (child size) You can see on my bike. It is atatched with a clickfix system. https://www.flickr.com/photos/778361...posted-public/ (Bike can not be folded with this bag atatched).
My son left the suitcase in the cabin and detatched the suitcase from the frame. Innside the suitcase he carryed a Brompton basket, and he now atatched the basket on the frame and used the basket for shopping or just water and tools when riding around. We did not bring the rectangular frame that is used to support the basket. We only had a steel one at that time and left it at home for weight reasons. It worked ok. Basket was slightly more "pregnant" when full but that can be fixed with atatching the front handle to the plastic handle on the frame. If you are not staying in one place like we did this is not a good idea for you.

I am making a basket for the cut back C frame. This way I can use the easy to make basket design to make a smaller and cheap bag for pooteling around.

I also add a rolltop to our baskets so that they can be used as a bigger bag without stuff falling out. When not in use the rolltop is just like a lining in the basket. https://www.flickr.com/photos/778361...posted-public/

https://www.flickr.com/photos/77836183@N08/7364722096/in/dateposted-public/

Search the forum for more info about DIY luggage solutions for Brompton. There is also a lot of pictures on Flickr

fietsbob

I do like the big red bag alteration, One of last summers repairs was to a Brompton ,
He stows it aboard his Sail Boat.

Loaded up his Touring Bag over its top, with soft gear like a sleeping bag on top
and because the contents were soft , the swing of the bars into the load
when making a Low speed corner was not really an Issue , as the bags contents gave way.

Newer Touring bags are Lined with Yellow fabric , Mine was Bought from older stock, Its single layer.

Black Cordura . a friend in The Coast Guard sewed in some wide Velcro & patched up a sewing error in the top edge Binding

I may get a Shopping basket spreader bar and add it To a Lining and overstuffing bag to go inside My touring Bag.

jur

You could easily mount a proper pannier, there's instructions on the Brompton talk yahoo group.

badmother

OP is hoping to carry 50 liters.. No pannier is that big.

fietsbob

Id seen a rig where someone built a Frame that used the Brompton Block then instead of
2 small pockets on the back of the Bag They rigged it up to take 2 small front Panniers on the back
of the touring Bag ,

I Know , OP wanted to use a Back Pack , Bene Sugg: a Bike trailer with a Portage Pack,

(with a Canoe you would wear the pack and carry the canoe over your Head )

then with the straps Up , in the trailer , You can Wear the trailer on Your back & carry the Bike in your Hand.

badmother

The mistymornings.net blog » Blog Archive » 16 speed Bromptons: Part 5 ? ready for action

nz6666

That's really cool. But there are too many bags. I still prefer one bag option, and those water proof panniers are really heavy. I will get a s frame and try strapping the 50 L pack horizontally. If that's too much for front, I will strap a 30L pack with all the heavy but not bulky stuff, and carry the 50 L on my back with bulky but light stuff like sleeping bag etc. Both my 30L and 50 L bags are ultra light frameless packs (Terra nova) they weight around 400 and 500g and basically look like plastic garbage bags so I can stuff the 30L into 50L easily if there is not too much stuff. The last resort (if carry the pack on my back is too hot or too heavy) may to get a rear rack and strap one of the bags there.

badmother

Remember that riding with a backpack is something you really should avoid. Better is to have one backpack standing on a rear rack and use another one in front. Also the weight of the backpack on your back more than adds to the rider weight. Since it is hanging behind your torso the weight is putting a strain on the seatpost and frame that they are not designed to take. It can break on tour or some time later.

What about a trailer with all the lugage on?

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

https://www.flickr.com/photos/sitric...-8drTS6-wZVNKU

https://www.flickr.com/photos/andyhu...-c8Sjw1-65Efsk

fietsbob

Re: that last Picture (broken Ti seat Post) their Steel seat post Is fine , extended version uses a 30% thicker Tube wall as well.

keyven

What you might find useful is the Nitto Front Rack for Brompton. I guess it was originally designed by them but there's a few copycats on the market now, including a Titanium version.




Then it's just a matter of strapping any bag to the front and riding off into the sunset...

badmother

Not sure what you are saying here. I talk about "putting a strain on the seatpost and frame that they are not designed to take" and you say it i is fine. Did you ask Brompton bikes if they agree??


For what we did with the bags we used this is not a good rack, it is muc too narrow. The regular frame is better. Ideal would be regular frame with extra support under like fietsbob has described his modifyed rack in other threads.

I have seen one in like that in CroMo (I think from a Japanese company) that looks ideal but then the OP also talks about weight and using what he`s got already. We have seen pictures of snapped bolts in luggageblocks too so there are no easy solutions to putting everything in the front.

nz6666

That last two pics, what kind of weight can destroy that steel frame and the seat post. Scary. I am only 70 kg (154 lbs). So a few more kilo on my back should be fine (I hope). Like I said, if there is too much stuff, I will move that to the rear rack (need to get one). Anyway, I hope all I carry is less than 15 kilo, in at most two packs. My next plan is to reduce the bike weight, remove reflectors, lighter saddle, light pedals, Ti bits, Ti seat posts etc but that will cost a fortune so will wait.

nz6666

I have seen that on Internet but couldn't find a place to buy one. Very nice, can be very handy for errands.

fietsbob

1st picture in Andy Huntington's set > titled Not Good
Text : I got the inference from that, what broke was Titanium , not Steel. replacement aluminum ..

Perhaps Lightskin Gets the same aluminum post then re machines it and puts their LED array within it at it's top..

CA102 ? L600mm (Brompton) ? LightSKIN , when asked they did say they use an aluminum post.

badmother

It is not only weight but bouncing weight over time. Does not take a lot if it is repeated over time- like when you break a wire without using tools, just bend it again and again and again..

Also: A 90 kg person resting all the weight on the seat is much better for the bike than a 70 kg person with 20 kgs hanging off his back. Just sayin.

feijai

How so?