Race nadella

[softwindow]

Hallo experts,
I have some nadellas with a teleskope and someone told me that these axles were used in race cars. In old threads I only find some lightweight nadellas with bigger diameter for race cars.
Does someone know something about these axles, the age and the cars ?
We wanted to start a 65 Rallye car project next year. Would such nadellas fit to a 65 Rallye car?

Nice christmas

Anke

[Frank Beck]

Amazing that they used those gigantic "flywheels" back in the day. They're so heavy they impede acceleration. Plus they simply add a bunch of unnecessary weight.

If you want a "show" rallye car you can certainly use them. If you want axles that provide the best performance use small diameter CV type axles and Krytox.

[softwindow]

Thank you Frank,
but do you know when they used such axles and in which cars? Did they use them in 911, 904 or 906?
I can`t find any information in books, but most of the time the members of this forum can help.
What use did the teleskop have? Was it a stress-breaker to avoid fractures?

Anke

[beh911]

Some history in this thread:
http://www.early911sregistry.org/for...-shaft-history

[gled49]

I don't know if those are factory. Dick Elverud in Portland use to convert Nadella's to a sliding type in the 60's & 70's. You can find his adds in the back of old Panoramas.

[moito]

have seen those type of shafts only on cars in the US or cars that came back from the US

[ajwans]

I have heard them referred to as Spicer half shafts. There's still a Spicer company around which makes drive train components https://spicerparts.com/

andy

[66S]

Ive seen them described as Ginther type axles. They will be fine in a 65 rally type car, especially with a 904 lsd. a lot of people wont use original Nadellas. 906 Nadellas have a larger diameter hollow shaft but no slider joint. My Ginther type axle with stub axle is 4 lbs. heavier than a Lobro half shaft without the stub axle. The Lobro could have greater inertia, I cant measure that. There may also be a difference in internal friction, especially when new.

[John Straub]

Yep, there was a guy making those back in the 70's.

John

[Bantam]

Here is a photo that someone posted a few years ago (possibly Mr Straub, hope you don't mind John) that shows the standard and 'Sports Purpose' lightweight Nadella (901.332.025.50) for comparison: