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144 BCD Chain Rings

Old 08-28-21, 05:43 PM
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Bad Lag
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144 BCD Chain Rings

Does anyone make or sell chain rings in the Campagnolo Nuovo Record size and style? All I am finding is "track" chain rings in this size, which use a 1/8" chain, as opposed to 3/32" for the Campagnolo.
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Old 08-28-21, 05:54 PM
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Specialites T.A.
Likely order from England. They are very pretty.
https://www.spacycles.co.uk/m8b0s113.../Chainrings-TA
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Old 08-28-21, 06:02 PM
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Campy 144 BCD Chain Rings

Originally Posted by Bad Lag View Post
Does anyone make or sell chain rings in the Campagnolo Nuovo Record size and style? All I am finding is "track" chain rings in this size, which use a 1/8" chain, as opposed to 3/32" for the Campagnolo.
What size are you looking for? NR or SR?

Bad Lag The reason I asked was if you are looking for new, or.... I have a bunch of 144 BCD Campy NR & SR, Sugino, SR, Suntour and maybe even a TA ring.

The later TA chain rings are made of 7075 aluminum rather that the common 6061 - at least some of them are. Very high quality.

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Old 08-28-21, 06:02 PM
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If you want with Colnago or Masi big ring pantographing - cyclomondo out of Oz has some nice ones.
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Old 08-28-21, 06:25 PM
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The T.A. rings are the only ones that I know of... but it's been a long time since I've shopped for them.
Peter White Cycles is a distributor here in the USA.. https://www.peterwhitecycles.com/tach.php#competition
Looks like a 42T inner ring is $58 and a 52T outer ring is $69.

I've bought stuff from Peter since the first Schmidt hub dynamos came out around the year 2000, and just bought a nice 34T, 110mm BCD T.A. ring about a month ago. The T.A. rings are excellent quality.

Steve in Peoria
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Old 08-28-21, 08:14 PM
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I bought a narrow-wide 44t 144bcd on Aliexpress, have yet to use it but it looks and feels solid and I will be putting it on since I usually drop my chain every few rides over train tracks or something and I feel like I am getting strong enough to graduate from the 42t i've been using
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Old 08-29-21, 03:33 AM
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Old Gipiemme chainrings fit Campagnolo cranks.



Last edited by Nuovo Record; 08-29-21 at 04:37 AM.
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Old 08-29-21, 07:52 AM
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Originally Posted by ZudeJammer View Post
I bought a narrow-wide 44t 144bcd on Aliexpress, have yet to use it but it looks and feels solid and I will be putting it on since I usually drop my chain every few rides over train tracks or something and I feel like I am getting strong enough to graduate from the 42t i've been using
don’t know the term narrow-wide.
Seems you might be running a fixed or single speed, which either a 3/32” or 1/8” chain could be used.
never lost a chain on a fixed on the road.
there are some brands that tout extended height teeth to help keep the chain engaged.
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Old 08-29-21, 07:54 AM
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Back in the day, Sugino, SR were other brands that made to the 144 BCD form factor.
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Old 08-29-21, 11:19 AM
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Thanks, everyone. The TA chain rings will have to do. I like that they are made from 7075 alloy.

I've always thought rings should be steel for longevity. 7075 has the tensile strength of mild steel, so that is encouraging. I am not sure about the hardness because hardness makes machining more difficult but post-machining tempering can be used to harden the alloy of the final product.

Anyone know about these rings?

Last edited by Bad Lag; 08-29-21 at 11:24 AM.
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Old 08-29-21, 01:44 PM
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Kind of a long shot, but I have a Cannondale-branded 46T chainring in 144mm BCD, 3/32", black color. I bought it at a swap meet thinking I might use it for my fixed-gear, but I doubt I will.

LMK if interested.
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Old 08-29-21, 02:05 PM
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Originally Posted by Bad Lag View Post
Thanks, everyone. The TA chain rings will have to do. I like that they are made from 7075 alloy.

I've always thought rings should be steel for longevity. 7075 has the tensile strength of mild steel, so that is encouraging. I am not sure about the hardness because hardness makes machining more difficult but post-machining tempering can be used to harden the alloy of the final product.

Anyone know about these rings?
i doubt heat treated, the probability of warping during the heat treatment would outweigh the hardness benefits. Think about the scrap rate.
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Old 08-29-21, 03:28 PM
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I was looking at Campagnolo 42t 144bcd chainrings for a future project and desided that for the money, I might as well pick up a 42t triplizer when the time comes. Im planning on running a triple, but theres no reason not to run a triplizer ring as a double with options.
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Old 08-29-21, 06:22 PM
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Machinability Rating

Originally Posted by Bad Lag View Post
Thanks, everyone. The TA chain rings will have to do. I like that they are made from 7075 alloy.

I've always thought rings should be steel for longevity. 7075 has the tensile strength of mild steel, so that is encouraging. I am not sure about the hardness because hardness makes machining more difficult but post-machining tempering can be used to harden the alloy of the final product.
HUH!

This chart show the machinability rating of some common metals.

"Free Machining" low carbon steels like SAE/AISI 1112 and 1212 have a machinability rating of 100% as the basis. The figures are for steel in the annealed (soft) condition.

The machinability rating for cold drawn aluminum alloys is 360% - 3.6 times easier to machine than 1112 and 1212 steel. Most steels used in bicycle tubing will be in the range of 4130 steel.


To answer your question about steel chainrings, there are a number of reasons aside from the weight factor why they're only found on the cheapest bikes today:

Aluminum chain rings date back to the early 1930's. A major consideration is that aluminum chainrings absorb a lot of drive train vibrations and provide for smoother pedaling. That's a BIG factor for longer distance cycling.

Chainrings like chains and rear sprockets are considered wear parts never intended to last forever. In almost 50 years of riding derailleur bikes, I found that it takes a lot of miles to wear out aluminum chainrings.

With periodic cleaning and lubrication of the drive train, 10,000+ miles is not an unreasonable expectation for aluminum chainring life. You'll go through 3-4 chains and freewheels/cassettes to one chain ring!

Think about this... How many bikes actually get ridden 10,000 miles? Places where bikes are a common means of transportation like China and parts of Europe, also in the US a few commuters and serious sporting cyclists (like many folks here on BFs) can put 10,000 miles on a bike in a reasonable time span.

When an aluminum chainring wears out replace it just like tires, brake pads, chains, etc.

https://www.renehersecycles.com/hist...uminum-cranks/

Solution for worn chainrings.



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Last edited by verktyg; 08-29-21 at 06:47 PM.
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Old 08-29-21, 06:57 PM
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Originally Posted by Bad Lag View Post
Thanks, everyone. The TA chain rings will have to do. I like that they are made from 7075 alloy.

I've always thought rings should be steel for longevity. 7075 has the tensile strength of mild steel, so that is encouraging. I am not sure about the hardness because hardness makes machining more difficult but post-machining tempering can be used to harden the alloy of the final product.

Anyone know about these rings?
I have one on my 82 Super Record equipped Medici. IMO, better than original and I never get any sh_t for it. The original SR lasted so long that it could not be replaced reasonably with NOS. Settling for T.A. Rings is a blessing + Dealing with P.W. is C&V😊
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Old 08-29-21, 11:38 PM
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Originally Posted by verktyg View Post
solution for worn chainrings.



verktyg
LOL ! Saves drivetrain weight, too.
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Old 08-29-21, 11:42 PM
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The steel cogs in my freewheels seemingly last forever.

I'm not sure how many chainrings this bike has had but they are getting harder and harder to find and the cost keeps going up. I'd be willing to take on the small weight differential of a steel chain ring to get nearly infinite life. I'd still have the aluminum crank.

Cheese and crackers!, I saw a Regina Oro Chain for $120, just for the chain! <-- I almost bought it, too.
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Old 08-30-21, 08:13 AM
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Originally Posted by Bad Lag View Post
The steel cogs in my freewheels seemingly last forever.

I'm not sure how many chainrings this bike has had but they are getting harder and harder to find and the cost keeps going up. I'd be willing to take on the small weight differential of a steel chain ring to get nearly infinite life. I'd still have the aluminum crank.
I'm not sure any 144mm BCD steel road rings were ever made. There may be steel BMX rings, but likely only for 1/8" chain. But 144mm BCD rings are plentiful on eBay, both NOS and used, in a variety of tooth counts, sometimes at very reasonable cost. Just take care to get a road width (3/32") ring rather than a track (1/8") if you need it for a multi-speed bike. If you're running a FG/SS drivetrain, 1/8" chain will run fine on either 1/8" or 3/32" sprockets and chainrings, so you can mix and match.
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Old 08-30-21, 02:36 PM
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the stone 144bcd on aliexpress is not for fixed gear, it is for 1x which uses the same chain depending how many speeds you run but it is still just a chainring and would would on a double or triple
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Old 08-30-21, 07:38 PM
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Originally Posted by verktyg View Post
HUH!

.....
Think about this... How many bikes actually get ridden 10,000 miles? Places where bikes are a common means of transportation like China and parts of Europe, also in the US a few commuters and serious sporting cyclists (like many folks here on BFs) can put 10,000 miles on a bike in a reasonable time span.

When an aluminum chainring wears out replace it just like tires, brake pads, chains, etc.
........

verktyg
is it just us cranky old guys who ride the heck out of our bikes?

My recent T.A. ring purchase was the replacement for a cheap Vuelta ring. The Vuelta wasn't expensive, but also wasn't very durable. It was pretty badly worn, and if I was paying attention, I'd have replaced it sooner.
A quick photo....




It's a shame that I don't know how many miles are on this ring.

Steve in Peoria (but the bike has about 60,000 miles on it)
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Old 08-30-21, 08:13 PM
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High millage chain rings

Originally Posted by steelbikeguy View Post
is it just us cranky old guys who ride the heck out of our bikes?
C&V folks tend to be cheapskates !

But that said, "we're not worthy, we're not worthy" ("but the bike has about 60,000 miles on it")....


Originally Posted by steelbikeguy View Post
My recent T.A. ring purchase was the replacement for a cheap Vuelta ring. The Vuelta wasn't expensive, but also wasn't very durable. It was pretty badly worn, and if I was paying attention, I'd have replaced it sooner. A quick photo....



It's a shame that I don't know how many miles are on this ring. Steve in Peoria (but the bike has about 60,000 miles on it)
Looks like it's ready for shark's fin soup!

In the dry southwest back in the 70's, we came up with a theory that using a thin chain lubricant allowed fine grit to embed into the alloy teeth on aluminum chain rings. It could cause chains to wear faster but they were cheaper than chainrings.

We imported Sedis chain on 50 and 100 meter spools. We calculated our cost was about $3.00 a chain - dirt cheap. I replaced my chains every 3000 miles.

Fortunately I put a lot of those old chain in baggies and squirreled them away. Several years back I was looking for a chain for my 1967 PX-10. I pulled out those old Sedis chains that I'd kept and measured them all. Every one was still good!
(who's cheap now).

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