1 x Drivetrain with Shimano Di2 for Tri Bike ……advice pls


#1

Hi All,

I’m considering a change to 1 x on a Tri bike …am looking for any advice / pitfalls etc –

Currently im thinking of going Ultegra Di2 (just to keep cost down) with right side controls being Di2 shifters

1 x RHS - Pole/Extension Di2 shifter

1 x LHS – Pole/Extension Blanked over

1 x 3 port Di2 Junction Box

1 x RHS Basebar Di2 Shifter & Brake lever unit

1 x LHS Mechanical Brake lever only

1 x Rear Derailier – Ultegra Di2 long cage ….enable an up to 32 tooth I believe

1 x Battery & charger with wires etc to connect

With Chainring …to suit terrain etc ….

Thoughts, feels, advice, recommendations, on this set up ? thanks all!!!


#2

I ran 1x on my tri bike for around a year. It worked well and I enjoyed the simplicity. Bike has since been returned to a 2x (I live in Utah and needed a bit more gear) My was mechanical so I don’t have any input as far as Di2 parts are concerned though sorry… but this sounds like a pretty sweet set up.


#3

I’m also only in the discovery phase but 2 things stick out…

Ultegra GS rear mech now goes to 11-34 and aren’t you going to need a SM-JC41 to link the 3 port junction box, battery and rear mech together.

Keep us posted. Only ordered my frame yesterday and have a 3 month wait for it to be delivered so am avidly reading about new parts for me which are Di2 and hydraulic brakes.


#4

Check Rotor 1x13. They should release it early 2019. With different size cassette’s you can tackle most flat or hilly environments.


#5

thanks all! if i pull the trigger on this project (and i certainly hope to) i’ll keep this thread alive with progress!

thanks - Paul