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CAAD8 build suffers a mishap during test

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CAAD8 build suffers a mishap during test

Old 12-14-21, 11:37 PM
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jlmonte
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CAAD8 build suffers a mishap during test


It sits waiting for parts.

After gathering all the parts, I had everything working last Saturday. On its initial test ride, I ripped the rear derailleur off snapping the hanger. After investigating the mishap, I failed to route the chain properly. Overly confident after managing to justify to my wife another bike in the house, my hubris got me real good.

With my birthday in December, shopping is easy with plenty of Black Friday deals. I came across this NOS 2016 Cannondale CAAD8 frame on eBay. After researching, I had everything but a headset, bottom bracket, and a front derailleur adapter. During the Performance liquidation, I stockpiled the stem. While the seat post & saddle and cages, were old stuff in my parts drawer. Everything else came off my 2015 Specialized Roubaix Sport (Sora). I bought the Roubaix for the frame and immediately upgraded to a complete Ultegra 6800 groupset.

With a new hanger and rear derailleur on the way, Iím praying the I-5 Grapevine is passable by the USPS. I hope to complete the bike a day late of my 58th.
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Old 12-15-21, 01:20 AM
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Just saying, she looks like Wife of Bigfoot with those dual platform/clipless pedals. Go full clipless with a sweetie like that.
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Old 12-15-21, 09:54 AM
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Originally Posted by Leisesturm View Post
Just saying, she looks like Wife of Bigfoot with those dual platform/clipless pedals. Go full clipless with a sweetie like that.
😀 😀 if you look at the tool tray, real close, there is a pair of white Look Keo pedals. I was wearing OSHA shop approved flip flops during the build and test ride. So I stripped the Crank Brosí off a hybrid bike. BTW I wear size 13 shoes, big hands, big feet and no complaints from my wife.
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Old 12-15-21, 10:10 AM
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Originally Posted by jlmonte View Post
On its initial test ride, I ripped the rear derailleur off snapping the hanger. After investigating the mishap, I failed to route the chain properly.
Wait. Iím trying to get my head around this. You installed the chain and it didnít get a single revolution, not even incidentally/accidentally (forward or backward) before you got on it, rolled away, and began peddling? Please understand that Iím not looking to chastise youÖIíve had my own share of mechanical faux pas. But it just seems like this would have become evident before you got to the point where you had to pedal.

Dan
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Old 12-15-21, 10:55 AM
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Originally Posted by _ForceD_ View Post
Wait. Iím trying to get my head around this. You installed the chain and it didnít get a single revolution, not even incidentally/accidentally (forward or backward) before you got on it, rolled away, and began peddling? Please understand that Iím not looking to chastise youÖIíve had my own share of mechanical faux pas. But it just seems like this would have become evident before you got to the point where you had to pedal.

Dan
I am kind of wondering the same thing. Also, if a person is skilled enough to build up a bike, how does he botch one of the easiest parts of the process? (Just curious, and will admit that I routinely screw up the simplest, most repetitive tasks.)
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Old 12-15-21, 03:19 PM
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Originally Posted by Koyote View Post
Öif a person is skilled enough to build up a bike, how does he botch one of the easiest parts of the process? (Just curious, and will admit that I routinely screw up the simplest, most repetitive tasks.)
Originally Posted by _ForceD_ View Post
Wait. Iím trying to get my head around this. You installed the chain and it didnít get a single revolution, not even incidentally/accidentally (forward or backward) before you got on it, rolled away, and began peddling? Please understand that Iím not looking to chastise youÖIíve had my own share of mechanical faux pas. But it just seems like this would have become evident before you got to the point where you had to pedal. Dan
Kind people, I contribute this post to share my arrogance, in the hope my stupidity makes me a little humble. And to show off my birthday gift.



I had even reviewed tech manual.

I wrapped the chain outside the bottom pulley cage stop after carefully routing the top pulley.

On the stand it actually worked, but I discounted that it sounded rough. I thought it was the front derailleur. Also, I couldnít adequately reach the front derailleur brifters and spin the crank at the same time. So, Iíd set the extremes to test, big-little, spin cranks, test big-big, then drop to little big, and little-little. The focus was getting the derailleur set screws adjusted. Okie dokie, letís go! I did several runs checking ride position, forks, and headset. I had no rear brake (waiting a cable). More a joy ride than a function test. I believe I was shifting down to the small chain ring while on a middle cog when the mishap occurred. The chain must have slipped off the bottom pulley and Shazam, oly hit.

The USPS is as quick as Lance Armstrong, and the package from Nashbar is being delivered today. Iíll need to update after assembly.



Fail big or go home?

Luckily I was pedaling slow.
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Old 12-15-21, 03:33 PM
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Originally Posted by jlmonte View Post
Kind people, I contribute this post to share my arrogance, in the hope my stupidity makes me a little humble. And to show off my birthday gift.

I wrapped the chain outside the bottom pulley cage stop after carefully routing the top pulley.
Yep. Been there, done that. Working too quickly and without my glasses.
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Old 12-15-21, 03:37 PM
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Originally Posted by jlmonte View Post



I had even reviewed tech manual.

In fairness, those diagrams are confusing as hell and I can see why you'd get it wrong if you were glancing at it. It's like they ran out of the "do not" symbol so didn't put it on the far right diagram which is the one that actually makes it clear what you shouldn't do..
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Old 12-16-21, 08:32 AM
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Originally Posted by jlmonte View Post
😀 😀 if you look at the tool tray, real close, there is a pair of white Look Keo pedals. I was wearing OSHA shop approved flip flops during the build and test ride. So I stripped the Crank Brosí off a hybrid bike. BTW I wear size 13 shoes, big hands, big feet and no complaints from my wife.
She may not complain to you, but what does she say to her girlfriends?

By the way, I've done the same thing with my chains. More than once. Fortunately found out before taking the bike off the stand.
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Old 12-16-21, 11:21 AM
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I did something similar on an older 90's era Trek with 105 derailleur. Instead of a pin, one of the derailleur plates had a bent tab and I routed the chain on the outside of the tab. It worked but was slightly more noisy. Didn't find it till on a break 1/2 way through a 50 miler charity ride. Luckily someone had a chain tool. Use a quick link and pay more attention now.
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Old 12-16-21, 11:46 PM
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Originally Posted by Mojo31 View Post
By the way, I've done the same thing with my chains. More than once. Fortunately found out before taking the bike off the stand.
Yup.
Originally Posted by Koyote View Post
Yep. Been there, done that. Working too quickly and without my glasses.
Yup.
Originally Posted by cubewheels View Post
I few times I put the chain incorrectly, but managed to catch the error every time because I always check the shift quality on the stand before I do a test ride.
Check.
Originally Posted by Aroyobob View Post
I did something similar on an older 90's era Trek with 105 derailleur. Instead of a pin, one of the derailleur plates had a bent tab and I routed the chain on the outside of the tab. It worked but was slightly more noisy.
Double check.
Well bad on me if I messed this up. Itís built, with a little struggle. My stand is ancient, actually bought it from frame builder Stan Johnson, and itís too low. Iím 6í 2Ē, vision impaired, and lazy, so I took off the front wheel to raise the rear. Not like the days of clamping onto the seat tube. Interesting which tools are obsolete, like headset wrenches (kinda). I had the shop torque the bottom bracket, and set the star nut with tools Iím not about to buy. I only recently got torque Allen wrenches, from a shop owner that retired. A must have in my opinion.

I started to pull measurements from another bike I built back in the 90ís saddle to bars measure the same 27 inches. Going to check stack eventually. Iím taking it into the shop, I just want that once over fine tuning I just canít do. Maybe check how I positioned the front derailleur adapter and install a plastic spokes guard for me.



Kinda goofy sitting while trying to make adjustments.

The poor Colnago looks skinny and needs some TLC, or retired. The quill stem height is maxed out. BTW, Chorus 9 speed is superior to Sora.
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Old 12-17-21, 09:53 AM
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A couple years ago I mis-routed a new chain through my derailleur when installing. When it happened to me, though, I think I got three rides in before I noticed. It wore down the little tab it was incorrectly riding over by a tiny bit, but no other damage.
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