quote:
Originally posted by RRS1:
Just how hard are these to find? I am interested in two.


Plenty difficult and approaching their weight in gold apparently.

There are three versions that I am aware of.

One has no gusset reinforcements and apparently the rarest (only a couple of sets seen), one with equal length gussets (pretty rare, thought to be maybe 100 sets), and these with one long, one short (the most common and kinda' the continuations) until the current "alloy" wheels at $1,500 each.

Pounce on anything you can get.
Rather than chance 40 year old wheels, for about similar cost you can get a new set of original style sand cast magnesium from Marvic or aluminum at lower cost (that you can powder coat) from Roin.
quote:
Originally posted by RRS1:
Was referring to the grainy pitted look of the original 7-8". If the original 10's are naturally finished better quality, that's okay.


No, they have a better finish on the machined surfaces.

The space between the gussets is a little strange. Like the mold of the surface there was never really finished or polished?

I think it was just that they were originally intended for racing, not to show on the showroom floor?

It's difficult to explain or even photograph. You need to see a set in person to get the picture.

IF you can find a set, grab them.

The caution on aged magnesium is the correct "text book" response, but so far I haven't heard of one wheel failing.

The American Torq Thrusts like on the Shelby team Trans Am cars by contrast typically are a myriad of cracks through the castings.

There is just a difference in quality. Even the magnesium alloy used on the Campi's is better.

Those folks just knew what they were doing. Very high level of engineering.

Stuff coming out of Southern California of the day seem to be largely Mom & Pop, balls of their a sses companies.
Ray & all

I have made inquiries in the recent past to both Roin & Marvic regarding 10x17 Campy clone rear wheels. Roin was non-responsive to two inquiries. Like Ray I find that annoying. Marvic did respond however, Silvia Framba of Marvic was quite pleasant to communicate with. I was informed Marvic doesn't do wheels in other diameters Frowner , only high quality reproductions of historic wheels like the 10x15 Campy which is the focus of this topic.

While I was in communication with Silvia I went ahead and priced the 10x15 wheels, since this is such a hot topic for forum members. Their price for 10x15 Campy wheels in magnesium is currently €1,550.00 each (both short rib & long rib wheels can be reproduced, they are priced the same). She estimated €200.00 shipping for a pair of wheels to Ventura. Total would be €3,300.00 for a pair of 10x15 wheels, currently equivalent to $3,839.00 US dollars, shipped to your door.

Their terms are 40% at the time of order, the balance before shipping. Delivery takes 8 to 10 weeks.
As with all Campagnolo magnesium wheels, I suggest that any such on a car destined to be driven on public roads be annealed every 10 years or so. I first ran across this technique back in the '80s when fresh out of the Navy and working in Aerospace; at that time 'mag' wheels were used in the U.S Military on fighter aircraft wheels. Those wheels were recycled every 1000 operating hours (flight times) but for passenger cars, it's too difficult to accurately keep track of operating time (car actually moving).

Cast magnesium, also known as 'compressed- corrosion' will age-harden, somewhat like post-curing of plastic; over time, stresses build up inside the casting. Left unchecked, they can result in overstressed wheels cracking while stored deflated on a shelf, or while in mild street use. Any nicks or chips should be TIG-welded & smoothed at this time; welding rapidly builds up stresses too, but we're going to address all of them at once.

The annealing can safely be done at home in an oven (while your wife is gone, or use a junked home oven to keep the peace). Each wheel should be thoroughly cleaned with soap & water & a stiff brush, dried off then placed in the oven at 275 degrees F for at least 3 hrs. The cleaning reduces smoke and odors from heating. Note- they WILL NOT CATCH FIRE! Big chunks of cast mag' are actually really hard to light off, unlike dust or shavings.

Once the 3 hr mark 'hot' is reached, wrap the hot wheel in a non-plastic blanket and return it to the hot oven, then turn the oven off and leave it alone till the next day. The idea here is to heat the wheel to 275F for a few hours, then cool it off as slowly as possible. The slow-as-possible cooling is critical and there are no shortcuts!

After the oven and wheel are again at room temperature, you'll find the wheel's protective paint has heat-discolored, so you refinish it with 'Argent Silver' paint from a rattle-can. The greenish zinc chromate undercoat Campagnolo used will be undamaged. Your wheel should then be good for another decade or so of use.

Sure- its a bit of bother and takes a day for each wheel every decade or so, but it only costs your electricity & labor, and with the cost of such wheels today and the fact that Campy has been out of business for 30 years, it's cheap insurance. ALL my Campys have been annealed including my 1st generation, lightly used 10" x 15"s. No worries!

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