10/15/14 12:38 PM

I have one, Innovations Air Chuck Elite. Uses only threaded cartridges. I got it in a box of parts with a 100.00 Trek 620 I resold. Not used it as no cartridges.

Thus the question(s).

Is this mini thread on only worth getting tanks for. Or is a unit that takes the un-threaded cheaper cartridges a good option. Although the plastic threaded design to hold in a high pressure cartridge seem like it will hurt when it fails?


I also run 23-28 tires. Is a 12 gram enough for a 27mm Pave, or will there be some pre-pumping involved?


This is the one I have:

10/15/14 12:46 PM

You want 16g. 12g is for old-style road tires, e.g. 700 x 20C

10/15/14 2:50 PM

I prefer the trigger type inflator, and there are a number by genuine innovations or planet bike that take either type of cart in all sizes. I use the 12's on my 25's but only need about 80lbs.

10/15/14 2:55 PM

I run 85 90 these days max. So a 12g with a littel pre-pumping seating may do the trick.

Need to run out and get some cartridges and get to testing.

10/15/14 4:19 PM

I use 12 gm unthreaded cartridges at about $.50 from any X-mart in a Superflate holder. I also carry a mini-pump that I use to inflate the tube to 20 - 30 psi to be sure the tire is seated and the new tuber is holding air. Then the CO2 cartridge gives me 100 psi or there about, which is fine. Reinflate that night since CO2 diffuses out faster than air.

10/15/14 4:37 PM

Superflates come in both a 12 and a 12/16 size. Both now discontinued by Innovations. Sometimes cheap on ebay.I have the original 12, didn't realize it also did threaded until recently, I've had it for 10 yrs or so.

10/15/14 6:27 PM

The 12 gram ones from x-mart and a trigger device will get you home with 23mm tires.

10/15/14 7:14 PM

quote:

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the new tuber is holding air

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10/15/14 7:39 PM

Dave B, 23mm tire ?

10/15/14 8:25 PM

quote:

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I use the 12's on my 25's but only need about 80lbs.

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10/15/14 8:41 PM

Sandi, I am 210 and have never pinched on a road bike. I run for example Conti 4Ks on my Scott. 23/25mm @ 85/87 lb is where I have settled in. I was running 25/25mm @ 80ish, but the rear would mush out when I put in a big ring out of the saddle effort.

Roubaix 27mm Paves 80/85 lb. Exactly the same size as the 25 4Ks on Belgium rims. But on a 2mm narrower rim. No pinches ever.

How big it the actual 25mm tubular inflated I am wondering? And on what rims, because they are? making wider tubular rims now too, aren't they?

Yada? ;)

10/16/14 5:59 AM

Tubulars? Not any more, really. I have tubular wheels, but only one set sees any use at all on my primary ride (those ancient LEW climbing wheels). The others are relegated to the "vintage" rides. Vittoria clinchers at 25mm ride close enough to make the cost and hassle of tubies no longer worthwhile.

The supply of decent low cost tubies has pretty much dried up. When my current stock runs out, I'll try the ones from Yellow Jersey. I will say that the clincher ride is only close, not quite there yet if you ride back to back, but otoh most of my tubies are 22-23mm and I really like the cornering security of the 25's so its sort of a wash for me. Clinchers every day, tubies for cruising around days. I do run sealant most of the time now.

I'm with Sparky on the air pressures. With larger volume tires, 80-85 lbs is plenty. I think that's been Bryan Nystrom's experience as well.

And yeah, I'm 130lbs. Need to eat more. And on a sub 15 lb bike. Lately though I've been wondering about that...these super stiff very light carbon bikes tend to "skitter" a bit over the rough stuff.

10/16/14 6:24 AM

I'm running 28mm Paselas at 85 PSI and I don't bother checking them for days at a time, so they run significantly below that without trouble.

I'm 200# and have pinch flatted exactly once, probably 7 or 8 years ago. Like Sparky, I was riding 25mm tires, but at more like 100 PSI. I hit a pothole absolutely dead-on and moments later the front started to deflate. Inspection showed a textbook case of snakebite--a pair of long (rather than round) parallel slices in the tube on the rim side.

10/16/14 6:35 AM

quote:

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Dave B, 23mm tire ?

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10/16/14 8:41 AM

Concur. They are my go to tires now.

10/16/14 10:06 AM

"Vittoria Rubino Pros"


I have 3 of those. I get tires in 3s a lot of the time.
I got them for 20.00 a pop on a good sale, but I find they do not hold tight in turns anywhere like Conti, or the 27 Paves even. Mine are the Threaded ones, not the slick one, I think there are both.

If I do not try to pull off a hard fast right trying to stay inside the lines of the bike land, I do not notice.

10/16/14 11:52 AM

I've noticed some parts of Tucson have CO2 unthreaded cartridges lying on the road side. Most of them have been squished flat by motor vehicles. I wonder why they exist. Anyone got an idea?

I know they're not from cyclists. If they were, other part of the city would also have discarded CO2 cartridges. The neighborhoods are perhaps on the lower end of the affluency scale, and Tucson isn't affluent by any measure.

Sandiway

10/16/14 12:05 PM

CO2 bb guns. Or they are NO2 carts (otherwise known as Whippits) used to get a buzz.

10/16/14 2:28 PM

quote:

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Or they are NO2 carts (otherwise known as Whippits) used to get a buzz.

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10/16/14 2:32 PM

Sounds like Nitrous alright. ;) [he says 2 octaves higher]

10/16/14 3:54 PM

http://www.easywhip.com/whipped-cream-chargers.html

10/16/14 4:10 PM

I had laughing gas at the dentist as a kid, and that is some serious sh*t....

10/16/14 7:20 PM

quote:

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Or are they are NO2 carts (otherwise known as Whippits) used to get a buzz.

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10/17/14 9:10 AM

Concur. They are my go to tires now.

10/17/14 9:33 AM

"Johnny was a chemist's son, but Johnny is no more, for what he thought was H2O was H2SO4."