20in titanium bromp clone?
#1
Junior Member
Thread Starter
Join Date: May 2021
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
20in titanium bromp clone?
This could be amazing.
Saw this in aliexpress. Cant post link, its called (Titanium TC4 Folding Bicycle Frame + Rear Triangel Fork Glossy / Matte Surface for 406mm 20" Bike Wheel
)
Saw this in aliexpress. Cant post link, its called (Titanium TC4 Folding Bicycle Frame + Rear Triangel Fork Glossy / Matte Surface for 406mm 20" Bike Wheel
)
#2
Senior Member
Join Date: Feb 2017
Posts: 1,513
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 783 Post(s)
Likes: 0
Liked 233 Times
in
198 Posts
I am not sure about the benefit of a 20"/ETRTO406 Brompton vs. its original ETRTO349 wheels.
If it is to only being able to use relatively narrow tires 28mm or 32mm max) it won't improve the comfort nor the performances (I have a Birdy with 3 wheel sizes, ETRTO355, ETRTO349 and ETRTO406 and there is no real difference in performances with the same tires). What would increase the comfort and performances on bad roads is having wide balloon tires like the 50mm Big Apple or 55mm Big Ben. But using 50x406 or 55x406 wheels would increase the total wheel diameter a lot (57mm for the wheel size increase + 30 or 40mm for the tire width increase).
But increasing the wheel size of the Brompton increases significantly its folded size (which isn't the case with the Birdy because on the Brompton, the rear wheel folds under the frame while on the Birdy the rear wheel folds beside the main frame) and the major strong point of the Brompton is its small folded size which is lost when increasing the wheel size.
If it is to only being able to use relatively narrow tires 28mm or 32mm max) it won't improve the comfort nor the performances (I have a Birdy with 3 wheel sizes, ETRTO355, ETRTO349 and ETRTO406 and there is no real difference in performances with the same tires). What would increase the comfort and performances on bad roads is having wide balloon tires like the 50mm Big Apple or 55mm Big Ben. But using 50x406 or 55x406 wheels would increase the total wheel diameter a lot (57mm for the wheel size increase + 30 or 40mm for the tire width increase).
But increasing the wheel size of the Brompton increases significantly its folded size (which isn't the case with the Birdy because on the Brompton, the rear wheel folds under the frame while on the Birdy the rear wheel folds beside the main frame) and the major strong point of the Brompton is its small folded size which is lost when increasing the wheel size.
#4
Junior Member
Thread Starter
Join Date: May 2021
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
i do find the brompton design attractive, also the possibility of getting it to 8-9kg with a great fold and good enough ride. Maybe one day when birdy makes a good looking one, I will consider it for sure.
#8
QR-disc must die!!!
Join Date: Sep 2018
Location: Shenandoah Valley, Northern Virginia.
Posts: 703
Bikes: '99 Trek 520, '20 Kona Sutra (FOR SALE 48cm), '21 Simon-Bikes mini-velo and a chromoly-framed folding bicycle with drop-bars and V-brakes, that rolls even while folded.
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 397 Post(s)
Likes: 0
Liked 199 Times
in
147 Posts
A 20" bromp improved clone overcomes several problems that keep me from the 16" version.
This 20" Ti bromp clone is missing a couple essential things though:
1. Front fork.
2. Paypal payment option.
How to overcome those?
This 20" Ti bromp clone is missing a couple essential things though:
1. Front fork.
2. Paypal payment option.
How to overcome those?
#9
Junior Member
Thread Starter
Join Date: May 2021
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I would wait a little for the design to mature, dealers r even putting a premium on clones in asia. But with the demand comes will and the quality is surprisingly high. With software or food products, things that cannot be QA easily, china lacks way behind, but for mechanical things like bikes, its easier for these factories to excel.
#10
Senior Member
A 20" clone in full titanium and disc brakes actually is available in China. But the asking price is a little eye watering at US$3500/- before shipping and taxes.