Full titanium Brompton clone, now done (w/updated pics)
 

https://cimg8.ibsrv.net/gimg/bikefor...4942dc8490.jpg

Overall

https://cimg2.ibsrv.net/gimg/bikefor...f6baab49e3.jpg
3D printed pusher, tensioner and EZ wheels

https://cimg9.ibsrv.net/gimg/bikefor...f77cc7310b.jpg
Handle area
https://cimg6.ibsrv.net/gimg/bikefor...acb55ccc3e.jpg

5.84kg

Damn...

Nice bike!

Inspiring, well done.

It should be - all parts are pretty much standard stuff, and no crazy light experimental ones here. (except for pedals, which will be swapped with detachable flat ones)

Seems the brake pad holders are backwards on both calipers.
I hope Brompton doesn't copy that. :)
https://farm4.staticflickr.com/3763/...618affa6_z.jpgFront brake 2013 Brompton by 1nterceptor, on Flickr

Otherwise, looks good. :thumb:

Good call!

2019 Brompton uses integrated brake pads, to prevent dummies (like me) from installing them backwards. :D

May I ask how much did it cost? Brompton needs to stop making owner buy after market modifications and partner with these manufacturers. They need to stop with these special paint jobs and really modernize their bikes.

Impressive!

OMG!!! :love: Is she a single speed?

Looks like a 2-speed.

Raxel, you are the steely-eyed missile man of folders.

thats 3 bromptons cost!
or 2 black edition costs!
its a hell expensive gift!

BTW: What kind of tires are these? I can read something like "champion" on the shoulder but no brand.

This might be the nicest Brompton ever. Did you record the frame weight? I wonder how much is saved over a steel one.

I wish the people that made these frame parts would do an integrated headset like on modern bikes where the stem direct clamps onto the steerer. The Brompton quill stem design is rubbish. Much cheaper Dahons and Terns have these modern stem designs.

Raxel, thank you for sharing with the community the cost of your interesting project. You didn't have to.

Technically and legally not a 'Brompton', which is a trademarked product manufactured in the UK, but I think we all know what you mean. It must be a highly desired dream build given that Bromptonites haven't assaulted the thread with cries of 'Chinese stealing Andrew Ritchie's intellectual property' (note: the relevant patents expired decades ago).

Maybe that's why. :p Just because someone likes Bromptons it does not necessarily mean he or she would be a blind fanboy/girl w/o relation to reality.

Remember the first titanium Brompton... Len Rubin's ill-fated Ultimate Folding Bike? Cool to see that the dream is still alive.

Velotto Champion Mini 28-349. Slightly narrower than Kojak 32-349.

Frame: 1271gr (-730gr)
S post: 461gr (-390gr)
Fork: 311gr (-240gr)
Rear: 423gr (-350gr)

So total saving is 1710gr over full steel Brompton, or 1120gr over Ti Brompton.

UFB had cassette and forward/rear derailleurs. Now there are wider rear frame available (135mm spacing) OR custom narrow spacing wheelset so you can build a better replica of UFB (2x11 speed)

https://cimg2.ibsrv.net/gimg/bikefor...2122921c4b.jpg

Nice bike. But it save less weight than I thought. I expected titanium frame can be saved more than 1kg but infact it saved 730gr ~ rear + Fork titanium as official Ti Brompton.
How about ride feeling on this bike?

I wonder how much rider weight the Titanium frame is rated for vs the Brompton steel?

It is a wedding anniversary GIFT for his lovely wife. You have an issue with giving your wife an expensive gift? If so, get her a small and inexpensive bag of "lollies" (sugar-free) as a gift. I personally like the idea of giving an expensive nice gift - and do follow my own advice :thumb:

The big question for me is whether there's more overall flex than with the standard steel brompton. From my investigations flex felt when pulling on the handlebars becomes an issue at bar heights around that of th M-type. S-type riders don't tend to notice much flex, so perhaps you won't really feel any on this ti model. But I wonder how it would feel with higher bars. I believe the majority of the flex comes from the ridiculous wedge stem 1970s technology, so if titanium is less strong than steel at the same volume then the stem will flex more, and that wouldn't be good.

That Qatar pumps money out of the ground certainly helps..