Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

Yes, but what about the q-factor of the Si cranks on the 104mm axle?

If you are talking about the 'new' Si arms then I believe it's the same design as the SiSl2 arms and will have 2.5mm less than SiSl and what the design intended.

How many fucking models of cranks do these idiots produce (and then remove from the market)?

So, I believe I have a 104mm axle sitting waiting for me, any idea where I can get the cheapest set of 165mm arms that might work with it? Any British sellers do SiSL2?

How many fucking models of cranks do these idiots produce (and then remove from the market)?

Original BB30 crank, 144m Q:

Si [200i, silver, discontinued]
SiSL [2007, black, discontinued]

New BB30/a crank 144mm Q (or 147mm if you believe a Cannondale doc, but I don't.)

SiSL2 [2013, black 109mm axle]
Si hollowforged [2013, black, hollow, 109mm axle]
Si forged [2016, black, forged non-hollow, 109mm axle]

So, I believe I have a 104mm axle sitting waiting for me, any idea where I can get the cheapest set of 165mm arms that might work with it?

I'd just grab any 165mm variation you can find. If it has to be 165mm. All your acquisition problems will go away if you go 170mm. Technically the Hollowforged Si crank will be the cheapest at retail, because I don't believe you can buy the Si forged crank at retail or as spare parts yet. And it's fugly.

Any British sellers do SiSL2?

Yes, but 165mm seems to be the issue and I got a cryptic message from UK along the lines of '165mm? no because we can't be bothered'.

So, I'll spend $1000USD and get one imported instead... good logic there, UK fuckwits.

Experts have 165mm SiSL2 crank arms in stock but not the BB:
http://www.cannondaleexperts.com/Cannondale-BB30-SiSL2-Bottom-Bracket-Set-68mm-Shell-Set-Complete--QC690-2015_p_4275.html

I can get the cheaper Si arms in 165mm from Canada. Maybe I should get them?

I can get the cheaper Si arms in 165mm from Canada. Maybe I should get them?

If you have to have 165mm arms then get them from anywhere you can find them because the mothership either doesn't have any or is not making enough to get many in to retail.

If price is a consideration then the difference between Si Hollowforged and SiSL2 is a few grams and a bit of lazer etching

Experts have 165mm SiSL2 crank arms in stock but not the BB:

You only really need the axle out of all of that lot - bearings, covers, wavey washers and spacers are all interchangable from other BB kits.

And you only need the axle if it turns out your chainstays are too wide to run the Si arms with the 104mm axle you have.

Qwerty seems to have the complete BB kit though. UK seller and nice guys.

I have a 104mm axle at Evans. But if I get the SiSL2 arms it might be too skinny (they say it's not compatible). But if I order the full SiSL2 set from anywhere I get a 109mm axle with it so then I have both axles. But I still need the BB30 BB right?

Oh, Qwerty. Any non-ceramic BB kits out there?

But I still need the BB30 BB right?

If you get an axle you should get all the BB parts with it.

If you get an axle but no bearings and whatnot, then any BB30 BB kit (bearings, covers, wave washer, 1mm preload spacers) will work, although you might have to make the larger spacers yourself if you are fitting a 109mm axle to 68mm BB30 bottom bracket shell. Some headset spacers work for this.

Any non-ceramic BB kits out there?

Not sure if Cannondale do a 'non ceramic' kit, but they can be had from SRAM, Token etc but you won't get the cannondale specific parts with them.

Any non-ceramic BB kits out there?

BB30 bearings are just a standard 6806 industrial bearing cartridge

What's the general verdict on power meter accuracy on the track? Thinking of stages in particular

stages >>>

Is anyone on here a long term Quarq user? If so, what do you think?

Yes, I've had 2 Rikens for a few years. I like them, apart from the one which died suddenly and inexplicably during the Dragon Ride last year. Got replaced FOC though. Otherwise, they're like the P2Ms - they just work.

Thanks.

You must have more power meters than DC Rainmaker though!

Got my P2M back. Gave me a new battery and some new rubber plugs to cover the screws.

First ride on it and set a PB FTP.

Thanks P2M!

A new PB! Goes to show that training without power works too.

Ha.
Its basically because I didnt injure myself on my cycling hols. So Ive had the chance to build properly.

I struggled without my P2M. Over/unders were laughble.

There's two BB options 68mm standard BB30 and 68mm PressFit BB30:

http://www.cannondaleexperts.com/Cannondale-SL2-68X109mm-Ceramic-Bottom-Bracket_p_2095.html

http://www.cannondaleexperts.com/Cannondale-SL2-68X109mm-PressFit-Ceramic-Bottom-Bracket_p_2094.html

I've currently got adapters in the Shiv to take the BB30 BB down to Shimano 24mm axle size. Which BB type will I need to fit the Si or SiSL2 cranks? The PressFit one or the standard one?

Shiv is BB30 non? So the standard kit.

If you have installed an adapter for a screw in thread BB then you'll have to remove that.

OSBB which is basically BB30 but the Cannondale Expert site offers BB30 and PressFit BB30 - basically, what's the difference between those two? Obviously the adapter will go.

BB30 and PressFit BB30 - basically, what's the difference between those two?

BB shell has different internal diameters. BB30 BB ID < PF30 BB ID. BB30 bearings are pressed bare in to the frame. PF BB30 (or PF30) bearings are pressed in to nylon cups that are then pressed in to the frame.

The difference between the two Cannondale kits is that the PF30 one fits both BB30 and PF30 - two metal (not nylon) cups are included and only used when installed on a PF30 frame.

http://www.velocipedesalon.com/forum/f40/specialized-osbb-bb30-pf30-38108.html

"My understanding was that OSBB = BB30 on alloy frames and OSBB = PF30 on carbon frames. But if other sources disagree with that then I'll reconsider and say that OSBB = a mess."

EDIT: "The Shiv Pro module is labeled OSBB but is actually BB30. Praxis insert for 24mm has worked perfectly for me this season with D/A cranks. Smooth, no creaks."

No wonder fuckers like me have no chance of getting this right.

Could I use the bearings that are already in there with the Hollowgram cranks (after removing the adapters)?

Bb30 bearings are cheap as, I wouldn't bother trying to get them out of the pf30 inserts if they are already pressed in, I have some spare if you happen to be in W1.

For some reason bike24 has the Si cranks cheaper than the Canadian shop but the Canadian shop's price for SiSL2 cranks is over £200 cheaper. I'm thinking Si cranks from bike24 is the best way to go. If it all goes tits up I've not bought the most expensive cranks in the universe.

Bike24 are really quick to ship parts too.