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Another Will This Crank Fit?

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Another Will This Crank Fit?

Old 11-07-17, 01:10 PM
  #26  
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Originally Posted by alcjphil
Which version of 10 speed 105 brifter? The ones with hidden shift cables will work with newer brake callipers
I think mine are 5600 105s I believe. They have the shift cable coming out of the side of the shifter, the brake cables run under the bar tape. So it appears I'm still SOL. But now I know I can find some 5700 series, which of course might be easier said than done.

Thanks for the reply,
fasthair
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Old 11-09-17, 07:36 AM
  #27  
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Originally Posted by fasthair
Nope. My bike doesn't use a BB30. Just plain ol' external 68mm British (?) threaded BB. Mine is one of the last Handmade in the USA frames. 2010 they lost that nice little decal on the frames. I'm not sure when the frame was redesigned, 2011 maybe, but that is when they started using the BB30.

fasthair
Interesting. I was going by the 2009 Cannondale catalog and they say the Synapse has BB30. I guess they intended that but never executed until later?
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Old 11-09-17, 09:59 AM
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Originally Posted by ptempel
Interesting. I was going by the 2009 Cannondale catalog and they say the Synapse has BB30. I guess they intended that but never executed until later?
Not sure what to say to this but you made me look it up.

My serial for sure starts with a "U" which according to Vintage Cannondale is a 2009. I went and looked at the catalogs from 2008, 2009 and 2010. Here is what I see.

The 2008 nothing matches, paint, parts ect.

The 2009 has the same paint and accents. The 2010 has the components that my bike has, right down to that miserable saddle it had. The 2010 list the FSA MegaExo BB which is for sure a external thread BB just like my bike. Funny thing, as you will see in the photos below, is my FSA crank doesn't match the photo of the 2010 but the brakes and everything else matches my bike.

I bought the bike off eBay in 06-2011 and the seller, from California, had it listed as a 2010. But with the serial I've always called it a 2009. So just for the record my bike is a Synapse 5 105 Alloy with a compact double, size 54.

So here are some photos from the catalogs.

2009



2010



My Bike... I have changed the wheels, bars, stem, saddle and the rear derailleur with a Ultegra and Dura-Ace cogs. Sorry it's not in front of a white garage door



Looks like I just learned something new today... I think

Thanks for the post.

fasthair

Edit 1: Now I see why you think it has a BB30. The 2009 carbon Synapse does in fact use a BB30. So there we go... mystery solved.
Edit 2: They other unsolved mystery is why I have 2009 paint with 2010 parts. My bike must be very near the end of the year production run of 2009 would be my guess.

Last edited by fasthair; 11-09-17 at 03:44 PM.
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Old 11-10-17, 08:01 PM
  #29  
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Originally Posted by fasthair
Dang it. I had read that but I wasn't sure how much of a difference it was. I'm going to guess it is enough that it would reduce brake performance enough to be "unsafe." Would you happen to know? If so I guess I'll have to add that to the list too. I had planned on one day upgrading the bifters at some point but later rather than sooner. I have 10 speed 105 bifters on it now.

I was going to ask about the bifters because I had read that. But since this thread was about the crank and not brakes originally I didn't want to add confusion to the thread.

Thanks for speaking up about this issue!

fasthair
So here's my take on the brake compatibility from experience. The pull ratios for the brakes changed with the final generation of 10s (5700/6700/7900). That generation of 10s brifters works perfectly fine with 11s brakes (5800/6800/9000 and newer).

The levers with the new ratios pull more cable than on previous generations, so with older brakes (5600/6600/7800 and older) they pull too much and give you a LOT of braking force. I wouldn't call it unsafe, but it's hard to modulate if you're not used to it. I am currently running 6700 brifters with 6600 brakes on my beater bike with no issues. I was running this same setup on my main bike for about a year before switching to a bike that came with V-brakes. If you live somewhere relatively flat, or with short hills that don't requiring you to drag your brakes you'd probably be OK. I wouldn't want to do it somewhere mountainous where you'd do a lot of braking on descents due to the lack of being able to easily modulate braking and the possibility of grabbing way too much brake in an emergency situation.

Going the other way... Older brifters with newer brakes I would consider possibly unsafe. I have never done this myself, but my guess is that you may run into situations where you have insufficient braking force.

Shimano's current compatibility chart is here: 2017-2018 SHIMANO Product Information Web
Manuals & Tech doc is also a great reference for manuals, exploded views, replacement parts compatibility, etc.
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Old 02-08-18, 10:12 AM
  #30  
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Just to update this post. I did get the crank installed with the new BB I had and it works perfect! Amazing how much nicer this crank is compared to the old FSA crank and BB. It shifts beautifully and is so smooth. Plus it looks good on my bike.

I had also ordered those brake and went to install them. The rear fit prefect but the front didn't have enough reach for the pads to sit on the wheel properly, they were about 2-3mm short. What I didn't know until I looked into the problem was Cannondale , for whatever reason, used mid-reach (or long-reach, however you want to call it) brake calipers on my bike. What bummed me out the most was a day after I returned them my friend showed me this link which would have fixed my problem.

Oh well I guess we can save that for the next round of upgrades at another time.

fasthair
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