Are there 7x9 rail clamps/wedges sold anywhere for this kind of TanTan seatpost? The default one fits only thinner rails, and if any other bits came with it, I must have misplaced them...

Quote from: gf on March 21, 2024, 02:23:18 AM
What I meas is if with small chainring the chain is close to the lower chainstay in the front of rear triangle, just near the chainring.

Don't quite get how it could be too close there

Quote from: gf on March 20, 2024, 10:37:09 AM
Can I ask you if with chain on smallest cog and on 34t chainring, the chain touch orr i very close to the chainstay?

There's like 5mm gap between the chainstay and the chain (on the upper pulley), when B-tension is set correctly. If that's what you meant?

Quote from: leon.y on March 01, 2024, 12:20:01 PM
How does yours look?

Didn't really look if the radius matches. I have to check.

Still two months of winter & snow before I get to ride outside...


Frame TanTan GR048 XS
Fork TanTan FO060 XS
Handlebar TanTan HB047 80x380mm
Seatpost TanTan SP08
Headset TanTan
Thru axles TanTan
Paint YS-701 glossy

Bottom bracket Kactus T47-24 86.5mm (AliExpress)
Crankset shims Muqzi 24mm (AliExpress)

Shifters Ultegra R8100 ST-R8170 x2
Front derailleur Ultegra R8100 FD-R8150
Rear derailleur Ultegra R8100 RD-R8150
Front brake Ultegra R8100 BR-R8170
Rear brake Ultegra R8100 BR-R8170
Crankset Ultegra R8100 FC-R8100 50-34T 160mm
Cassette Ultegra R8100 CS-R8101 11-30T

Chain Shimano CN-M8100
Brake discs Shimano RT-CL800 140mm x2
Brake hoses Shimano SM-BH90-JK-SSR
Battery Shimano Di2 BT-DN300
Wires Shimano EW-SD300 x2

Housing damper Risk Internal Housing Damper (AliExpress)
Battery holder DIY (housing foam & tape)

Rims Yuan An UNI 40mm (Leon Hu)
Rim tape Yuan An
Hubs Bitex BX312
Spokes Pillar Wing 20

Tyres Continental GP5000 30mm black
Inner tubes Tubolito TUBO-ROAD-700C

Saddle Selle Italia SLR Boost Endurance SuperFlow S3
Pedals Favero Assioma Uno
Bottle cages Fidlock TWIST Bike Base
Bottles Fidlock TWIST Single Bottle 600
Frame bag BMC Integrated Top Tube Bag
Handlebar tape Ergon BT Road
Handlebar plugs Ergon BT Road


Size XS. Wheels from Leon.

7,9kg including pedals, bottle mounts & frame bag.

Paint job is not very high quality, chips easily from edges. Otherwise no big issues.

First time building, haven't ridden yet. I have no idea how much force it would take to really affect driving without hands.

I think I got it pretty ok after some twisting. Now has a small amount of spiral going into the down tube.

Quote from: PLA on February 24, 2024, 08:11:27 PM
Why does the rear brake hose need to go around the steerer?

Drilling through would probably be a bad idea 

Did the direct mount hanger make any difference compared to the normal one?

Di2, so only brake hoses to route through the headset. Front brake hose exits the fork front of the steerer tube, so it doesn't really cause any steering force. Rear brake hose has to go around the steerer tube and some excess hose needs to be tucked into frame to allow full turning. There's limited space inside the frame for the excess hose, so the stiff hose always tends to push the handlebar to one side.

Any tips on how to avoid that?