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Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 1:11 am
by williamsf1
having done about 5 bikes with Di2 I have been asked to do an EPS system into a cervelo S5

anyone taken the plunge and done this internal mod with an after market or factory battery cut down???

HELP

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 1:50 am
by maxxevv
Somebody on these forums posted a while back about doing a hack for it. But haven't heard anything more since though.

Which reminds me .... how did that guy do anyone ??

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 1:50 am
by Weenie

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Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 2:01 am
by rmerka
I saw a picture where Calfee hacked an EPS unit and put it in a handlebar/stem combo. It was uglier than the wart on the downtube.

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 9:14 pm
by dereksmalls
I think it's meant to be trickier as the brains are also in the battery pack. Someone correct me if I'm wrong please. I'm sure there is a reason why it hasn't been done so far

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 9:19 pm
by dgasmd
dereksmalls wrote:I think it's meant to be trickier as the brains are also in the battery pack. Someone correct me if I'm wrong please. I'm sure there is a reason why it hasn't been done so far


Correct!

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 9:29 pm
by HammerTime2
rmerka wrote:I saw a picture where Calfee hacked an EPS unit and put it in a handlebar/stem combo. It was uglier than the wart on the downtube.

Image

It looks like it's nuclear-powered.

Calfee should work with Gruber and develop the GNA - Gruber Nuclear Assist. I think that would be just the ticket for Cancellara this year, as he needs a little something extra.

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 10:12 pm
by rmerka
Yeah the wart on the frame is definitely better, Yuck :frightened:

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 11:16 pm
by cymans
it's next on my hit list !!

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Tue Mar 19, 2013 11:46 pm
by doomith
To be honest it kinda looks alright!

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 3:29 am
by highwater
It would look alright if there was a touch screen GPS computer built into it...

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 4:05 am
by Bridgeman
Has anyone tried mounting it under the bottom bracket?

Seems to me one could possibly take advantage of the cable guide screws for attachment.

Also, it would be at the lowest center of gravity.

I'm building up a new bike and looking into this method as an alternative.

Even where it is currently mounted, just under the bottle cage, never really bothered me though.

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 6:48 am
by Tumppi

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 10:09 am
by dereksmalls
Bridgeman wrote:Has anyone tried mounting it under the bottom bracket?


All depends on where the frame manufacturer has point the mounting holes.

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 12:17 pm
by Kjetil
Colnago puts it under the down tube right in front of the BB on the C59. Trek has a messy world record on the new Madone.

I have read that Campagnolo has a seat post mounting standard coming. I just wonder where the charge and diagnostics ports will go. Maybe they'll put it all inside a Campagnolo post. That could be elegant.

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 1:19 pm
by jo.k
highwater wrote:It would look alright if there was a touch screen GPS computer built into it...


Like this?

Image

Re: Is it possible to put the EPS battery in a seatpost?

Posted: Wed Mar 20, 2013 1:19 pm
by Weenie

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