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Re: TanTan TT-X21 frame And look at the hambini bb in action on tt-x21 frame after I had to take the whiffle/flap wheel to expand the size of the bottom bracket to the correct diameter.

https://photos.app.goo.gl/jqDX23VkSLZuZtq9A

March 18, 2021, 11:25:07 PM
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Re: TanTan TT-X21 frame
I finally gave up on the Sensah Empire Pro front derailleur on the TT-X21 and decided to remove the inner cable arrangement and went for a Shimano 105 7000 front Mech. It has an option to thread the outer housing to the derailleur. Two good features include the cable tensioning screw and anchor screw to the derailleur hanger. I found a fitting that allows the housing to leave the frame. As this is just in front of the wheel and will allow water into the frame, I plan to seal it with Silicone.

I used a similar fitting.  What silicone product will you use to seal it?

And for the other person that was wanting to know where to get the fitting here is a link to one at aliexpress.  There are lots of others though on ebay and others with slightly different design.  https://www.aliexpress.com/item/1005002023414027.html?spm=a2g0s.9042311.0.0.5c9a4c4dMU2pPe

March 31, 2021, 11:22:09 AM
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Re: TanTan TT-X21 frame You will need to insist with them.  And be prepared to fight.  And I hope you did not pay with Paypal "friends and family".  That is your backup if they do not agree to send you another one.  I would not waste too much time arguing with them before you tell them you have no choice but to take it up with Paypal.  At that point hopefully they will capitulate.  7mm is not ok!
July 01, 2021, 09:33:37 AM
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Re: TanTan TT-X21 frame Well that would make it a very special bike.  There's a good site that will give you advice https://bettershifting.com/.  Also if want to eliminate drivetrain wires completely consider SRAM. But maybe first of all have a look at availability and what is available - practically nothing.  And then go with whatever you can actually buy.
August 27, 2021, 01:34:13 PM
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Re: TanTan TT-X21 frame
I bought this frame back in 2020 with this custom design, and only the frame from Tantan. I built the bike by myself.

About the groupset, it's a full mechanical Ultegra R8000... A real pain in the a** with the handlebar but it works flawlessly!

Frame 599$, custom design 70$, thru axle 24$ and shipping fees (to Switzerland) 85$

The current configuration is:

TT-X21 size 52
Full mech Ultegra R8000
Magene P505 powermeter with 52/36 Spécialités TA chainrings
Prime Primavera 56 wheels
Conti GP5000S TR

Same size as the one I built for my son but 105/ultegra groupset mix with 160mm cranks, aliexpress saddle, look pedals, 4i crank based power meter, Farsports wheels set up tubeless, vittoria tyres.

April 04, 2024, 11:51:23 AM
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