cryptid01

I read it, but it's possible I could have missed something. Could you elaborate rather than asking me to click through to your blog again? Seems kinda spammy.

In general, I don't like to increase weight and complexity (not to mention cost) without a commensurate increase in performance. But more specifically,

The product increases rotational unsprung weight
The canister would not fit on my bike(s)
The lines coming out the axles appear highly vulnerable to common crash damage.
It uses CO2 which costs money and is not readily available to me
The product is not available in 20mm or 135mm axle sizes
I am not willing to trade straight spokes for j-bends
I am most certainly not willing to trade 120 hub engagement points for 24

And finally, it looks clunky as hell.

Siu Blue Wind

True. It's the opinion of the public here on BF. Isn't that what you asked for, opinions? Looks like a few members here have given good reason why it wouldn't work for them. Or should they put up a facade and be "optimistic"? Perhaps other forums might look at it differently.

Brian

I remember when you were nice too.

Tom Stormcrowe

Might be useful in limited applications, but at the penalty of less reliability and greater weight. To make it truly useful, the gas reservoir needs to be able to regenerate, like motor vehicle air reservoir systems for air brakes and auto-inflate/deflate, and then we're talking a great deal more complexity and a great deal more drivetrain resistance if you human power it.

There could be a battery powered compressor option, but that too would be weighty, even with Ping batteries, and to make it light enough for a bicyclist to use, the cost would be very high, or the reliability would be low, from an engineering point of view. There'd still also be a battery charge time limit, as well. This could be offset by solar cells, of course, but this leads into even greater complexity and weight, not to mention the fragility of the cells, themselves.

Siu Blue Wind

Remember how I said I always learned from you?

samburger

Dang, this thread managed to catch the attention of the Three Star Generals

Discussions (arguments) dealt with using courtesy, political correctness, & valid points seem absolutely foreign in this sub-forum. Where's the sarcasm?!

Brian

Remember how I always said you don't pay attention?

Brian

Dude, it's right there in your sig - you're a noob. Which is why I'll excuse you for not knowing the history here. I may have been a bit more active on this site in the past, and there's a pretty good chance that I made some very critical comments about the current owners and administration. So I guess they feel my comments deserve some extra scrutiny. But the lack of courtesy, political correctness, and valid points are not exclusive to this sub-forum.

[edit] How much sarcasm do you want?

Tom Stormcrowe

Brian, you posted something that interested me. I responded, topically and courteously. There's no extra scrutiny......you give yourself too much credit on the bad side. It had nothing to do with you or your history here, and my response would have been the same if, for example, samburger had posted this.

Siu Blue Wind

The best teacher's students will always surpass the teacher.

Brian

Metta

3speed

Huh. Well this has now become a more intense thread. Obviously I'm a total newbie compared to other posters, but considering the views of those who have responded in general and those "generals" who have now responded, maybe[Brian] just chill and think critically about what has been said? I don't think this is some personal attack against you. It's just that you posted a MTB system that the public of bikeforums MTBers don't see a real need for when compared against cost/convenience/weight, and therefore the idea didn't fly here. Like you said, you're not an investor or inventor, so no big deal. The invention is Definitely a cool idea, but maybe it's not really useful in the real world to the crowd you posted it to here. Whatever. No big deal.

Brian

I'm not taking it as a personal attack. As I mentioned, I'm curious to see whether this concept gains acceptance by competitive riders. Some of the comments are amusing though. If it's not for you for whatever reason, that's all well and good. But just because one rider sees no value in its application, that doesn't invalidate the concept. I deplore the idea of using CO2 to inflate my tires. Doesn't mean it's a bad idea. Just bad for the environment.

Allen

Did you know that compressed CO2 is largely a secondary industry capturing the off gassing from fermentation?
If one wishes to keep it out of the environment then its source should be discouraged--beer.

Brian

I realized the irony of my comment - I was not so much referring to the CO2 used in this application, but the cartridges used to inflate a flat, that are then left on the side of the road by careless riders.

Save the beer.

kenhill3

Regardless of the particular attributes/viabilities of this product, positive and negative, I am all for the spirit of creativity and invention. No need to squelch an idea because of what CAN'T be done- lots of ideas have been fruitful in the end, if only for spin-offs that end up successful.

Brian

I like that attitude.

Dilberto

I call fad. To a serious weight weenie racer....that's already too much weight.

TASB

Interesting idea. Although i personally can not see using it for various reasons already gone over ad nauseum in here.
Perhaps if it gets a customer base and enthusiasts, the technology will become more compact, user friendly and more versatile. Neat idea al the same.

Daspydyr 

Brian, I am interested in knowing if you would outfit a bike with this much weight for either recreational or competitive biking?

I am a recreational rider and I know that the application is sound. But seriously, the bulk alone would bother me. Perhaps in the Elite bike racing world where annual contracts for riders are huge, maybe, maybe not. Most XC rigs are built was light as possible. I'm surprised that Nino Shurter is racing a HT in the UCI worldcup. Seems to be doing well with it.

Daspydyr 

Stinking Roadies, that's why we post where the real environmentally concerned post. Here I'll buy the next round, beer's on me.

Brian

I wouldn't use it, but I'm also riding a Cannondale hardtail with the old school XT 9 speed. It would have been nice on our tandem, since we had to air up to get to the bushland, then drop the pressure for off road, before airing up again for the ride home along the beach path. Changing pressure mid-trail would be overkill for me, as I'm rarely in a big rush.

kenhill3

"old school 9 speed."

)

Brian

My brake and shift levers are separate. Not a fan of the integrated stuff.

Daspydyr 

Thank you, that hurt my bike feelings!