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I stayed with the original tire on the rear. (paper staple puncture) See attachments for the new tube and sealant I am trying out. The Stan's sealant is best for latex tubes, but supposedly works well with butyl tubes as well. The tech (Pier) stated that Slime was junk by comparison. The single application Stan's was $3.14.

The fellows at Bike Barn claimed that, "They don't make longer than 45mm stems." Pier was holding and measuring the original Kenda tube with the 60mm stem! A 45mm is just barely usable. You have to deflate the tire completely, press the tire behind the stem firmly, then attach the pump and inflate fully. Topping off is likely not an issue. Again, see attachments. The tube was $4.33.

Maybe just convert to Presta valve from Schrader and be done with it? 

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Interesting.  I thought Stan's goo was for tubeless tires.  Just my luck I finally bought my first ever bottle of Slime in decades of riding and now you show me this.  Bah!

Extended Presta valves that are more than long enough are widely available as you probably know.  And reasonably priced.  

I have a pair of these adapters for double wall rims.  In your case you might use two of them on one rim, one iside and one outside, and screw the presta collar down onto the outside one to hold it down.  Alternatively use KISS principle and just put one in on inside

https://goo.gl/1D2R98

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Great link! Thanks for the info. The "customers also bought" shows a rubber protector and a knurld nut for the same sort of conversion. I think I'd go the metal one on the inside and the knurld nut on the outside. 

The Schroeder valve stem is a really tight fit in the Sondors Thin rim anyways. (?) 

Stan's No Tubes bottle states that it is "for tubeless and tubeless converted tires, tubulars, and tubes with removable valve cores." It also states, "stays liquid in tire for 2-7 months, depending on climate." That's a bit scary on the short end of the lifespan. And what does it mean exactly? Does it turn into a solid mass that rattles around in the tube? Ouch! I'll let you know my experience. ?

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That rubber protector you mention is for single-wall rims and I used that exact bit to convert my Sondors fattie rims to Presta.  The only reason I have the double-wall version is I bought both types in case I found the rubber to be unable to live up to the job.  It worked ok.  My new double-wall rims are drilled for Presta so no adapters necessary, although if I was thinking ahead I would have used Schraeder rims and those adapters and kept the ability to use Schraeder tubes in a pinch.

That little knurled nut looks like just the same screw-down collar/nut/thingie you'd also get in the box with any Presta inner tube, with a jacked up price.  Thats what I mistook it for when I first saw the thing.  Never realized that lip on top is really the bottom and fits into the rim.  Nice.  Seems like a better option than the rubber for single-wall and a nice capper for rims like yours.

2-7 months on the Stan's is a dealbreaker for me.  Even if it goes 7... no way Jose.  Tuffy coupled to kevlar-belted tires has always done me right in the past.  I have the tuffy but winging it on the tire part.  No flats so far except for a 1/4" square 4-inch length of metal that got me on my first ride home from work.  Nothing would have stopped that.

Edited by MattRobertson
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