Hello,
Does anybody have the original valve stem protectors of the Borrani wheels? I need an expressive foto and drawing with the measurements to machine these. Also the kind of plating is of my interest - ate these cadmium plated or chromed?
Can anybody help please?
Thank you and best regards,
Martin
Valve Stem Protectors
Valve Stem Protectors
250 GTE #3631 (series Ii)
Re: Valve Stem Protectors
This one is on a GTE. I took the photo in Padua. Dimensions would be great to have.
Thanks
Christopher
Thanks
Christopher
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- Posts: 1908
- Joined: Wed Sep 04, 2002 12:13 am
- Location: San Francisco Area
Re: Valve Stem Protectors
Martin, here are a couple of pictures. One is Parker Hall's photo showing the measurements of an original valve protector and a piece of an original Pirelli innertube. However, you are going to learn that this is too short for today's innertube stems. The other photo is my wheel, showing a somewhat longer collar. I also had to cut more threads and shave more rubber to make this work.
john
john
PF Coupe
Re: Valve Stem Protectors
Thank you John,
I understand that the original stem would not match todays inner tubes / valve outlets due to different measurements. Did you note the final measurements that you machined?
Regards,
Martin
I understand that the original stem would not match todays inner tubes / valve outlets due to different measurements. Did you note the final measurements that you machined?
Regards,
Martin
250 GTE #3631 (series Ii)
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- Posts: 1908
- Joined: Wed Sep 04, 2002 12:13 am
- Location: San Francisco Area
Re: Valve Stem Protectors
Martin, I did not, because I made them one at a time to fit that particular wheel. I wanted a nice seating where the cut met the wheel, with no gaps and no black innertube showing. The knurled thumb screws are all the same, I but the cups may vary slightly. Here are the reject cups I made; the short one is per Parker's specs and the taller one is what actually worked with the wheel.
john
john
PF Coupe
Re: Valve Stem Protectors
I don't think anyone answered the plating on these pieces, but they're supposed to be white Cadmium plated. All these parts are for concours detailing, but for regular road use people like Lucas tire, and Coker Tire, sell a plastic collar that will slide onto the inner tube valve before installation on the wheel that will protect and space the valve stem from the larger hole in the wheel.
I did a video that shows these spacers:
https://youtu.be/xOJx16xZCtA
Tom
I did a video that shows these spacers:
https://youtu.be/xOJx16xZCtA
Tom
'63 330 America #5053