Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

Kinesis do (or used to) a seatpost with a circlip to fix the battery inside the post rather than the stupid bung thing that inevitably slips eventually.

That's it. When I have tried - or the mechanic that fitted me a new battery in the middle of TCR in 2019 tried - to keep my battery inside the seat post, it has always fallen out.

Mine never has. Just add some bubble wrap, tightened down with electrical tape or one of the proper mounts (I think I got a Deda one) that don't move.

I lied. The last one I bought was M:Part

https://www.ebay.co.uk/itm/293803034704

The kinesis post is on my tripster and despite all the rough stuff it's not moved. The other (road) bikes have the ones like @hippy posted and eventually they fall down for me

I'll try that M-part one.
Likewise my bubble wrap efforts, and the mechanic's effort using a bit of rag, all fell down.

Now, what is my seat post internal diameter...? Assume not a standard so I guess I'll have to take it out and measure.

Obviously you need to wrap it more so it's fucking bosh, in there and not coming out unless you really yank the bastard out. I don't know how to explain that in watts per square rage but it should be tight enough that you do a man grunt to get the battery out of the seatpost and then feel like a beer.

Don't suppose anyone has found a fix for a broken front mech actuator-servo-arm-thingee yet? I've got a perfectly good mech if that one, tiny metal part can be fixed.

So you think I was doing it wrong putting a little wisp of bubble wrap round it and casually flicking it inside my seat post?

That could be a reason, yeah

Battery in the seatpost, then hammer a frozen sausage in to stop it falling out

A kitcken scourer with the scourer bit cut off works well, you need something that'll expand in the seatpost, bubble wrap and rags don't really do that

Bubble wrap and electrical tape definitely works. Fight me.

yea i think it is a fine solution as well, like hippy says you just have to put it tight in there. you can also rig it up in the top tube near the heat tube where gravity isn't working against you. a bit more of a pita to access though as you'll really need to take the fork out.

There’s lots of knockoffs of the Pinarello seatpost mount on Ebay.

I'm with Hippy, you're all overthinking this. Mine's always been bubblewrapped and shoved in the seat post with zero issues other than getting gaffer tape stuck to itself while wrapping the thing up

I'm with Hippy

#hippyisalwaysright #vote1hippy #hippyforprimeminister

#hippyisfat #tootalltimmightbetoo

#andyplikestoplayinthemudandthengohome #dirtyboi

If you really want to make sure, hot glue the fuck out of it.

#hippyforprimeminister

Any random cunt off the street would be a massive improvement

Trufax

Will an SW-S705 Alfine Di2 flat bar shifter control an Ultegra R8050 Di2 Rear Derailleur? And would it just be a case of unplugging the road shifter and plugging in the flat bar one, subject to cable length?

https://bike.shimano.com/content/dam/e-tube/assets/images/contents/project/compatibillity/pdf/en/HM-CC_5.0.1-00-EN.pdf

It would appear so. Wiggle have some very cheap left hand di2 mtb shifters. I would imagine they can be programmed to shift the rear

It should do, but best to check the Shimano Di2 compatibility document to be certain:

https://bike.shimano.com/en-EU/e-tube/project/compatibility.html

In terms of installation, it might work out the box, but you may need to ensure the firmware for each component is up to date.