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-   -   Showing off six NOS Nisi tubular hoops, and a question (https://www.bikeforums.net/classic-vintage/1204682-showing-off-six-nos-nisi-tubular-hoops-question.html)

Lascauxcaveman 06-14-20 04:53 PM

Showing off six NOS Nisi tubular hoops, and a question
 
My cousin dumped a pile of bicycle rims on me; left behind in his guesthouse by his late father-in-law. (I met the old gent a few times; had I known he was a vintage bike nerd, those Thanksgiving parties would have been a bit more interesting for me - and maybe for him, too.)

In the big stack o' rims were these six Nisi tubie hoops that appear NOS. Five 36 hole, and one 32 hole. I plan on building one set of the 36s with a pair of hi-flange NR hubs I scored last year, but will probably hang the rest on the wall, for now.

Question 1: Considering my Clydliness (210lbs and not likely to get that below 200) am I asking for trouble by planning on using these for significant amounts of gravel riding?

Question 2: And to that end, at approximately 21mm wide, are these appropriate rims for larger tires, say 32mm or 35mm? (Yes, I'm thinking Cino- and/or Eroica-type riding.) I am a relative novice with tubies.

Pics:
https://cimg3.ibsrv.net/gimg/bikefor...a602492bd4.jpg


https://cimg3.ibsrv.net/gimg/bikefor...0e6b10aaa6.jpg

Of course, the most interesting one is the 32 hole rim (first photo, second rim from the bottom), with the amateurish-looking drillium inside the rim and extra stickers on it.
https://cimg4.ibsrv.net/gimg/bikefor...f03df68aed.jpg
https://cimg5.ibsrv.net/gimg/bikefor...ca221b806b.jpg
https://cimg7.ibsrv.net/gimg/bikefor...b4dbfebd6e.jpg

Who can tell me about these things?

randyjawa 06-14-20 06:53 PM

I love the rims and would use a set, in a heart beat, on the right bike. But that bike would not see very much gravel, or dirt, or mud, or thorns or anything that would cause me t have to shell out for another tire, plus the time to install it. But that is just me. I did try the tubular thing and they are OK with me on appropriate bikes (those manufactured prior to the availability of 700c clinchers). For something that sees lots of use, clinchers only now.

Salamandrine 06-14-20 07:09 PM

The first thing you need to know is that spoke washers should be used with most Nisi rims. I have no idea if anyone still sells them. Most likely some other washer of about the same size would work.

I suggest weighing them. For general purpose riding, something around 400g is about right. I suspect many of those could be lighter racing rims. A lot depends on how lightly you ride your bike. We should have a thread on that sometime.

They'll probably be fine with 32 or 35mm tires. Can't say for certain, but del Mondos and the like were still popular circa the late 70s. That will also help durability. I'd go 4x and double butted spokes too --and don't go nuts with the tension.

I vaguely remember the blue ones, but don't remember exactly what they were. Maybe an SSC competitor.

EDIT: I see that the nomenclature has shifted. What we used to call spoke washers are now called nipple washers, and are in fact still sold.

Lascauxcaveman 06-14-20 08:15 PM


Originally Posted by Salamandrine (Post 21534015)
The first thing you need to know is that spoke washers should be used with most Nisi rims. I have no idea if anyone still sells them. Most likely some other washer of about the same size would work.

Got enough for at least one pair, it seems. :thumb: And the 32 hole rim has what appears to be brass washers already in place.


https://cimg6.ibsrv.net/gimg/bikefor...5f7e44348b.jpg

ldmataya 06-15-20 10:42 AM

I use 32mm cross tubulars on some older, narrow tubular rims with no issues at all - they work great. In fact I recently laced a set to disc hubs and they look great and will last forever since there will not be any brake pads scrubbing the rim. I do use the Belgian method of mounting cross tubulars for extra security:

https://www.cxmagazine.com/taping-gl...bulars-belgian

steve sumner 06-15-20 10:51 AM

as to question #1 remember that Europeans raced cyclocross on tubulars for decades.
also remember that the strength of a wheel is dependent on the builder. a properly built
and stress relived wheel will handle a little gravel even if it's sewup light

semroc 06-15-20 11:06 AM

Very cool rims. I'd be stoked on those. I weigh 200 lbs., and ride on dirt and gravel all the time. Two hours on dirt,mud, and gravel yesterday. On 25mm Rene Herse on the front, and a 25mm vittoria on the back. 80 psi. In the back. 78 in the front. Rode great. Passing mt. Bikers looking at me like what are you doing? Tubulars Rule. Have fun brah!


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