Full titanium Brompton clone, now done (pics)
03-11-19, 10:14 AM
#51
Banned
Steel alloy , It may be a choice for the needs of production, brazing with torch arrays, automated bender,
and all that .. reliable efficiency advantages .
Bike Friday uses 4130 , I think ..
Saying you use a higher value tubing , helps justify charging more,
in your higher end race type frames...
....
and all that .. reliable efficiency advantages .
Bike Friday uses 4130 , I think ..
Saying you use a higher value tubing , helps justify charging more,
in your higher end race type frames...
....
Last edited by fietsbob; 03-11-19 at 10:17 AM.
03-17-19, 04:57 PM
#52
Senior Member
Join Date: Jul 2008
Posts: 1,984
Bikes: Brompton, Dahon Vitesse D5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Excuse me if I missed this in the thread, I just skimmed it and didn’t seen any mention. Are these the parts sold by the ‘easyti’ brand on eBay, Raxel and/or Brompton_X?
Likes For Raxel:
05-28-19, 12:28 PM
#54
Newbie
Join Date: May 2018
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Hey Raxel, would you be able to send me the CAD files for the chain tensioner you designed? I want to mill my own tensioner and don't have the measurements yet.
Likes For Raxel:
06-15-19, 10:11 PM
#56
Newbie
Join Date: Jun 2019
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Hi Raxel, where did you get the expander cone for the quill stem. The tiparts ones do not come with bolt and the expander cone is really hard to find.
06-15-19, 10:36 PM
#57
Senior Member
Thread Starter
Join Date: Mar 2008
Posts: 339
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Likes: 0
Liked 38 Times
in
20 Posts
Brompton silently replaced the expander with wedge. Tiparts now sells aftermarket quill wedge too (you need to cut the handlepost tube to mount it though)
06-16-19, 07:29 AM
#58
Junior Member
I have bought titanium clone Brompton frames twice from two different suppliers, but didn't keep any of them in the end.
In general, the quality seemed OK, but, the problem is the tolerances. One frame can't fold the stem into the 100% correct position, the other has a problem at the rear damper bracket.
I know the authentic Brompton frame could also have similar issues, but these third party stuff sometimes are unpredictable.
Or perhaps I was just unlucky？
Anyway, nice build! Impressive weight!
But I do not recommend others to follow.
In general, the quality seemed OK, but, the problem is the tolerances. One frame can't fold the stem into the 100% correct position, the other has a problem at the rear damper bracket.
I know the authentic Brompton frame could also have similar issues, but these third party stuff sometimes are unpredictable.
Or perhaps I was just unlucky？
Anyway, nice build! Impressive weight!
But I do not recommend others to follow.
06-16-19, 01:59 PM
#61
Stardust
08-30-19, 06:13 PM
#62
Newbie
Join Date: Aug 2019
Location: USA
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Likes For Rogery:
