Convert Giant propel to TT bike

Fatrobo
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Convert Giant propel to TT bike

Postby Fatrobo » Fri Jan 29, 2016 1:38 pm

Afternoon all,

Recently got very lucky with an incident on my bike, in that I survived and got a new bike off insurance AND got to keep the old propel. The old bike was a Propel Advanced 1 2014 (Di2).

With the bike still mostly in good working order I am investigating what it would take to convert it to a TT bike (not just clip on bars). I would have thought with a full TT cockpit the Di2 would be able to just "plug and play" with new ultegra time trial break leaver/shifters and TT bar end shifters. Especially given I believe there are extra ports for the satellite sprint shifters.

Apparently the LBS doesn't seem to agree and I can't see why. Anyone else have any ideas?

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Duck!
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Re: Convert Giant propel to TT bike

Postby Duck! » Wed Feb 03, 2016 2:31 pm

What part have they said won't work?

Include in the shifter conversion a new upper junction box; you need the 5-port version of the EW90 box to plug the four shifters in & keep it all tidy. There are two options of aerobar shifters; Ultegra have two buttons on each unit so you have full front & rear shifting capability from the aero extensions, while Dura-Ace only has a single button on each shifter, so you can only shift the rear derailleur from the aeros - front shifting must be done from the bullhorns. There is no capacity to plug extra "sprint" shifters in with a TT setup unless you insert additional junction boxes in-line somewhere, which then turns the wiring into a bit of a bird's nest.

You may need to do a firmware update to ensure the derailleurs are speaking the same version as the shifters, but otherwise it should all plug straight together & go.
I had a thought, but it got run over as it crossed my mind.

princessbumblebee
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Re: Convert Giant propel to TT bike

Postby princessbumblebee » Sat Feb 06, 2016 9:28 pm

I've definitely seen Propels around with full aero/TT headsets resembling TT bikes. I'm not sure about cabling etc (although I can't see the issue), I imagine the geometry would be slightly different but this would just be like a roadie with clip-ons

softy
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Re: Convert Giant propel to TT bike

Postby softy » Sun Feb 07, 2016 9:34 am

So many good bikes around, does it have to be a giant?

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m@
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Re: Convert Giant propel to TT bike

Postby m@ » Sun Feb 07, 2016 12:12 pm

softy wrote:So many good bikes around, does it have to be a giant?

Huh? The OP is talking about converting a bike he already has...
ALL THE ABOVEIS TRUE

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Carrots
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Re: Convert Giant propel to TT bike

Postby Carrots » Wed Feb 17, 2016 2:14 pm

Little happy snap from back in the Team Blanco days (ex Rabo come Belkin come Lotto Jumbo).

Pretty easy conversion - get the bars you want with the right shifter options. 5 port junction and away you go.

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