Colnago Nuovo Mexico Bicycle Restoration (Part 7)

Colnago Nuovo Mexico Bicycle Restoration

Welcome to part 7 of my Colnago Nuovo Mexico restoration. In the previous parts I have discussed the following parts of this restoration;

Fit Friction Shift Levers

These Campagnolo shift levers are simple to install. There is a left and right lever so you need to ensure you have them fitted to the correct sides. Make sure the thread of the fram shift bosses is nice and clean as the D-Ring fitting on the Campagnolo bolt does not give you a lot of leverage, so if the frame threads are dirty or corroded, you may not be able to tighten the bolt to give sufficient friction.

I cleaned out these threads first using a different bolt with a screw driver head. Once this was done, the Campagnolo bolt screwed in easily allowing me to tighten it to provide the correct amount of friction.

For installation instructions, list of parts as well as a nice tip on how to add extra friction, refer to my Campagnolo friction shift levers review.

To learn the secrets of a perfect gear change using friction shift levers, refer to my Friction Shifting Tips for the Perfect Gear Change.

Campagnolo friction shift levers fitted
Campagnolo friction shift levers fitted

Fit the Regina Freewheel

The Regina freewheel I purchased for this build was in excellent condition, but I decided to dismantle the freewheel for a full service so I could inspect all the parts, then clean, grease and re-assemble.

Once the service was completed, I greased the threads of the Campagnolo Super Record rear hub and simply threaded the freewheel onto the hub in a clockwise direction. The Italian threading of this freewheel matches the Italian threading of the rear hub. I didn’t bother tightening the freewheel because once you start pedaling, the force of the chain will pull it tight immediately. Freewheels are easy to put on but can be difficult to remove.

The photos below show these steps. I have also included a photo of the tool required to remove the freewheel if ever required. This splined adapter is required only if you want to remove the freewheel. Unlike modern freehubs & cassettes, do not use a chain whip when removing a freewheel.

Fit Campagnolo Super Record Crankset

In my opinion, the crankset is one of the most beautiful pieces of the vintage Campagnolo Super Record group and is easy to install when you have the correct socket tool. This socket needs to not be too thick so as to fit inside the crankset hole when tightening the bolt. My crankset extractor tool (which is used to remove the cranks from a square taper bottom bracket) included a socket that does the job of installing and removing crank bolts very well.

Campagnolo Super Record Crankset fitted
Campagnolo Super Record Crankset fitted

I always apply grease the flats of the bottom bracket axle before fitting the cranks as it makes it easy to tighten and (later) remove the crank. The grease will also help to eliminate any creaking when pedaling. I also grease the threads of the drive side crank bolt and both the decorative Campagnolo crankset caps. I now use Loctite on the non-drive side crank bolt (instead of grease) as I found it can come loose after a period of riding as shown below. I tightened the crank bolts to a firm pressure of 22 Nm, but according to Park Tools you can tighten them higher if you wish.

Apply Loctite to Left Campagnolo Crank Bolt
Applied Loctite to left side crank bolt to stop it working loose over time.

Fitting the Derailleurs

Rear Derailleur

Fitting the rear derailleur is a simple process that requires just one bolt to be tightened to the rear drop-out. Just make sure that the rear tab of the derailleur sits above the hook on the rear drop-out so when you rotate the derailleur toward the front of the bike this tab will engage with the hook on the rear drop-out and stop the derailleur rotating any further forward. Due to the design of the derailleur fixing bolt the rear derailleur should easily rotate forward and backward even when it is tightened.

Campagnolo Super Record Rear Derailleur fitted
Campagnolo Super Record Rear Derailleur fitted

Front Derailleur

More time and precision is required to fit the front derailleur. Like modern derailleurs, ensure the outside edge of the front derailleur cage sits only a few millimeters above the teeth of the large chain ring. You will need to manually push the derailleur outward to check this adjustment. Also, fully rotate the crankset to ensure the lower edge of derailleur cage doesn’t touch any teeth of the large chain ring as some may protrude higher than others.

The second step is to ensure the front derailleur cage is aligned with the chain ring. I visually determined this adjustment looking down from above the derailleur cage at the inside edge of the cage to ensure it was aligned with the chain rings. If it is not aligned, there may be some chain rub in certain gear combinations. Also shifting won’t be as good as the derailleur cage wont contact the chain evenly. Once the chain and cables are fitted, this alignment can be further fine tuned if required.

Campagnolo Super Record Front Derailleur fitted
Campagnolo Super Record Front Derailleur fitted

Work Continues…

I hope you have enjoyed reading this article so far. On the next page you can read about how the build has come together.. **COMING SOON – MORE OF THE ASSEMBLY IN PROGRESS** Sorry it is taking so long to complete this build, I haven’t finished it yet because I ran out of space to store a finished bike…

Disclaimer

Please remember that this information is only to be used as a guide.
I consider myself an enthusiast, not an expert. Whilst I enjoy working on my own bikes, I am not a qualified bicycle mechanic. The content of this article is purely illustrative and does not constitute professional advice. For your own safety, this type of work should only be undertaken by a qualified bicycle mechanic. Incorrect assembly of parts could result in equipment damage, personal injury or death.

About Me.

I have been riding and working on my own bikes for many years now. I wanted to share my experiences, knowledge and research with others. My aim is to inspire people to get involved in all aspects of this amazing sport. Cheers.

Comments.

I welcome reader feedback in the comments section. Should you wish to suggest an amendment, please include a note advising the source of your information so that myself and other readers can ascertain the accuracy of your information. Note: Trolling or argumentative comments will be removed as they are counter-productive.

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