Di2 conversion on Cervelo P3

Dec 11, 18 6:25

Post #1 of 55 (7484 views)

Hey Slowtwitch,

I’m here to ask you to talk me out of converting my Cervelo nP3 drivetrain from Dura Ace mechanical to Di2. Or, even better, talk to me about making the conversion a success.

I’m considering the change just for the sake of change and to scratch the new bike itch. I also have an uncontrollable urge to clean up my cables. From what I can tell, Tri Rig’s Alpha One has room for Junction A while the P3 frame has room for Junction B in the bottom bracket and the battery in the seat tube. So, it appears this would be a very clean setup. True?

I’m educating myself on the specific components to select, with a general bias towards Dura-Ace. My only big question at this point is whether to retain my Magura hydraulic brakes or move over to Tri-Rig for compatibility with the Di2 brake-shifters. Thoughts on that? Any other bits and pieces I should think about or prioritize?

I’d employ my LBS to make the change, so would appreciate any input I should share with them on how to optimize the placement and routing of components.

Please save me regret and tell me what I may be missing.

Scott

Last edited by: GreatScott: Dec 11, 18 6:27

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 6:33

Post #2 of 55 (7466 views)

Timely

My 2018 P3 is having a remodel as we speak with a TriRig Alpha One and TriRig Front Brake...and yes, I have DI2, so they (my LBS) are hiding everything.

I couldn't pull the trigger initially, when I was having the frame built up and I only went with DI2 not a complete change of the cockpit, but it's clear that I need more adjustability and I also wanted to get rid of the cables/wires. Will let you know how it goes.

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 7:35

Post #3 of 55 (7424 views)

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 7:47

Post #4 of 55 (7413 views)

You should do all the work yourself.

Re: Di2 conversion on Cervelo P3 [jeffp] [ In reply to ]

Dec 11, 18 7:50

Post #5 of 55 (7410 views)

oooooo

so pretty...now, I can't wait!!....

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 7:58

Post #6 of 55 (7402 views)

I just upgraded to di2 last week. I used the Alpha X bars. Hardly any wires showing. The only thing coming from the stem to the frame is the brake cable and a single di2 cable which I put in shrink wrap to clean up the look. I would definitely suggest trying it yourself if you are at all interested. Was not difficult at all. Plenty of room for all di2 wires and junction in the stem. Plenty of room in the IA for the junction B and should be for the P2 as well. Not sure how easy the P2 routing would be compared, but the room would be there. It was very easy to route in the IA16.

Last edited by: KG6: Dec 11, 18 8:04

Re: Di2 conversion on Cervelo P3 [dtoce] [ In reply to ]

Dec 11, 18 8:12

Post #7 of 55 (7379 views)

not tririg bars and no di2 on brake levers(both are probably obvious)

you have to decide if you want older di2 or newer, ie synchroshift or not if running 2x

Re: Di2 conversion on Cervelo P3 [jeffp] [ In reply to ]

Dec 11, 18 12:51

Post #8 of 55 (7284 views)

Why did you forego the brake shifters? Do you regret not having them?

Alternatively, for those of you that have the brake shifters......could you live without them?

I'd welcome any input on whether to swap brakes from Magura to Tri Rig purely for compatibility with Shimano's brake shifter.

Scott

Re: Di2 conversion on Cervelo P3 [jimatbeyond] [ In reply to ]

Dec 11, 18 12:53

Post #9 of 55 (7280 views)

jimatbeyond wrote:

You should do all the work yourself.

Why? To make sure it is done right?

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 13:57

Post #10 of 55 (7248 views)

GreatScott wrote:

Alternatively, for those of you that have the brake shifters......could you live without them?

Scott

I have dual shifting capability on both my aerobars and brakes, and 'no', I could not live without them now.
The absolute beauty of having electronic shifting is that I never have to leave my position to shift when on my tribike-especially when going into corners, as I can shift from the brakes or my aero-bar extensions. And when in aero, I am shifting aggressively and staying aero. I'm certain this has helped me save a little time in my races this year, but it also keeps me safer as my hands are on the brakes AND shifters, at the same time, when necessary.

I absolutely LOVE my DI2 now and am so glad I was talked into it.

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 14:13

Post #11 of 55 (7235 views)

I am running a regular rear brake on my NP2 Di2 w/ an integrated shift/brake lever but a Magura on the front. I feel like that's the best combination, and I get to avoid paying for TriRig products.

Re: Di2 conversion on Cervelo P3 [jkhayc] [ In reply to ]

Dec 11, 18 15:54

Post #12 of 55 (7200 views)

Snap!

LBS suggested using a couple of supplemental buttons for the dual shifting function, saving the Magura. Good idea?

Scott

Re: Di2 conversion on Cervelo P3 [dtoce] [ In reply to ]

Dec 11, 18 15:57

Post #13 of 55 (7198 views)

Great minds think alike!

LBS is drawing up an estimate for the conversion. Buest guess on the $amount?

Scott

Re: Di2 conversion on Cervelo P3 [KG6] [ In reply to ]

Dec 11, 18 16:00

Post #14 of 55 (7193 views)

Nice! Thanks for the pics.

I took a hard look at the AX also, went with the A1 as a tool to play with my fit. Love the look of the AX once dialed in!

Scott

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 16:45

Post #15 of 55 (7170 views)

I don't need them and I am an aeroweenie, talk about leading edge :) you will notice no bar tape anywhere either.

Re: Di2 conversion on Cervelo P3 [jeffp] [ In reply to ]

Dec 11, 18 17:13

Post #16 of 55 (7158 views)

Geez, you are a weenie!

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 11, 18 20:26

Post #17 of 55 (7078 views)

GreatScott wrote:

Great minds think alike!

LBS is drawing up an estimate for the conversion. Buest guess on the $amount?

Scott

I’ve got an Alpha One that I’m planning on asking my LBS to install on my P2 soon, along with a full re-cabling. I’ve been debating getting Di2 at the same time or keeping it in the next year bucket...

It’s quite tempting.

Re: Di2 conversion on Cervelo P3 [SteveM] [ In reply to ]

Dec 11, 18 20:33

Post #18 of 55 (7072 views)

Come on in, the Di2 water is nice.

I’m planning to give the LBS the green light tomorrow.

Scott

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 12, 18 8:07

Post #19 of 55 (6976 views)

Is the bike shop going to give you a price on the parts and labor? Or just the labor?

Re: Di2 conversion on Cervelo P3 [jeffp] [ In reply to ]

Dec 12, 18 8:19

Post #20 of 55 (6959 views)

jeffp wrote:

I don't need them and I am an aeroweenie, talk about leading edge :) you will notice no bar tape anywhere either.

Ditto the anti-bar tape. Bar tape is for chumps. And, bar tape on extensions makes no sense at all to me. My bike is nekkid too.

That said, I have been in one race when I wish I had bar tape. That was Augusta 70.3 last year when my hands got slimed with a crapton of sunscreen. They were so slippery I could barely grip anything for more than half the ride. When I was on the base bar, I had to squeeze super tight and my hands hurt. That happened more often than it should have over the train tracks at the beginning.

Re: Di2 conversion on Cervelo P3 [exxxviii] [ In reply to ]

Dec 12, 18 8:53

Post #21 of 55 (6942 views)

Quote:

Ditto the anti-bar tape. Bar tape is for chumps. And, bar tape on extensions makes no sense at all to me. My bike is nekkid too.

I purchased the older bar shifters and brake levers where the di2 wire comes out of the bottom. I had to use bar tape to cover them. Wasn't happy about it from an aesthetic viewpoint, but it doesn't look horrible either. One day I may look into skateboard type grip tape to cover the wires, but still have that bare look.

Re: Di2 conversion on Cervelo P3 [KG6] [ In reply to ]

Dec 12, 18 9:43

Post #22 of 55 (6926 views)

KG6 wrote:

I purchased the older bar shifters and brake levers where the di2 wire comes out of the bottom. I had to use bar tape to cover them. Wasn't happy about it from an aesthetic viewpoint, but it doesn't look horrible either. One day I may look into skateboard type grip tape to cover the wires, but still have that bare look.

Yeah, in that case I do think bar tape of some kind is the better option. I have the Profile elongated extensions that are designed for shift buttons with the bottom wire/cable exit. I think that Zipp makes some like that too. But, the only way to do it with the brake levers is one of the newest ones with shift wire internal.

Re: Di2 conversion on Cervelo P3 [GreatScott] [ In reply to ]

Dec 12, 18 9:50

Post #23 of 55 (6917 views)

I bought these to use with the magura shifters: https://www.sigmasports.com/...ng-Shift-Switch/ET7H

My only worry is that the cable isn't that long and I don't have a whole lot of room inside the bar (3T aura) for a junction box plus the brake cables. Might need some extra cable

Re: Di2 conversion on Cervelo P3 [exxxviii] [ In reply to ]

IKnowEverything

Dec 12, 18 10:01

Post #24 of 55 (6908 views)

A good alternative to bartape for both grip and cable hiding purposes is heat shrink grip tape (typically used for fishing rods or golf clubs): https://www.amazon.com/...oding=UTF8&psc=1

Use the 25mm diameter and there's enough room to get cables underneath, etc. Requires a bit of planning, as you need to slip it on the bar, then run wires under it, etc.... but when done right, it looks great, adds a bit of grip, and maybe 1mm to the diameter of your bar.

___________________________________
MS: Exercise Science
Your speed matters a lot, sometimes you need to be very fast, where sometimes you need to breakdown your speed.

Re: Di2 conversion on Cervelo P3 [IKnowEverything] [ In reply to ]

Dec 12, 18 10:42

Post #25 of 55 (6880 views)

Lizard Skin baseball bat grip comes in .5 and 1.1mm thicknesses.

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