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Hopefully this frame can take 29er+. It would be a really nice added feature and would make an terrific lightweight 29er+.

Here's a picture of the Borealis Yampa with two bikes shown, one fat and one 29er+.



Brian
 

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My biggest "unknown" regarding fatbikes, is the tradeoff between 170/190.
170 = narrower Q-factor, but 5" tires on 100 mm rims are difficult to fit without skewing chainline. (170 mm rear hubs are the symmetric version of 17.5 mm offset rear.)
190 = wider Q-factor, but will readily accept 5" tires on 100 mm rims. (These are the symmetric version of 28 mm offset.)

Offset (or a wider hub) means the cassette is moved to the right so the chain gets straight to the chainring without rubbing on the tire.
 

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170 = narrower Q-factor, but 5" tires on 100 mm rims are difficult to fit without skewing chainline. (170 mm rear hubs are the symmetric version of 17.5 mm offset rear.)
190 = wider Q-factor, but will readily accept 5" tires on 100 mm rims. (These are the symmetric version of 28 mm offset.)

Offset (or a wider hub) means the cassette is moved to the right so the chain gets straight to the chainring without rubbing on the tire.
As per the 3 other threads on this topic.... Race Face Turbine 170 and other 1x integrated ring cranks can be used and keep the same q factor and a reasonable chainline while running clownshoes 100 mm rims and bud and lou.
 

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Discussion Starter · #51 ·
I got another email last night saying the frames would start to be available in the Jan/Feb timeframe.
 

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Compare the geometry charts of these frames...
Looks the same geo wise!!

From their site:
A lot of hard work and riding has gone into the development of the Sandfly. Needless to say, we're kinda' proud of the end result.

If it's the same frame as the Borealis, geo wise it is what a bunch of crap!!
 

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Looks the same geo wise!!

From their site:
A lot of hard work and riding has gone into the development of the Sandfly. Needless to say, we're kinda' proud of the end result.

If it's the same frame as the Borealis, geo wise it is what a bunch of crap!!
"Someone" put in a lot of hard work and riding into the development of that frame, they just don't say who.
 

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Hmmm... where can I get some just-like-Borealis rims for cheap?
 

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Just gonna throw this out here, back when Trek and specialized announced that they were gonna be making fatbikes, there was a whole lot of hue and cry about how they were just aping the little guys and shoving them out of the way and were just gonna destroy fatbikes/flood the market with cheap crap and destroy fatback, 907, etc.

But apparently, buying a chinese knock-off isn't going to destroy anything, because they're cheap and we all really want carbon fatbikes and 2k is just crazy money for a frame and and and and...

Just sayin, them cheap frames come at a cost. And the cost is, Trek and Specialized don't give a sh!t. They can hold their own against that stuff. But Fatback and 907? Nope. They can't.

So if y'all want a world where trek and specialized are the kings of the fatbike world, just buy all the cheap carbon fatties you can. No faster way to kill off the little guys who did all the work developing them. And when this does kill off Fatback and 907, you can just blame Trek and specialized, instead of blaming your cheap knock-off.

my 2 cents. take it for what it's worth.
 

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Just gonna throw this out here, back when Trek and specialized announced that they were gonna be making fatbikes, there was a whole lot of hue and cry about how they were just aping the little guys and shoving them out of the way and were just gonna destroy fatbikes/flood the market with cheap crap and destroy fatback, 907, etc.

But apparently, buying a chinese knock-off isn't going to destroy anything, because they're cheap and we all really want carbon fatbikes and 2k is just crazy money for a frame and and and and...

Just sayin, them cheap frames come at a cost. And the cost is, Trek and Specialized don't give a sh!t. They can hold their own against that stuff. But Fatback and 907? Nope. They can't.

So if y'all want a world where trek and specialized are the kings of the fatbike world, just buy all the cheap carbon fatties you can. No faster way to kill off the little guys who did all the work developing them. And when this does kill off Fatback and 907, you can just blame Trek and specialized, instead of blaming your cheap knock-off.

my 2 cents. take it for what it's worth.
True story, well put sir!!
 

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Discussion Starter · #59 ·
Good point bf, and I appreciate that position.

I've got two kids in college, so funds are tight, there's no way I can afford a $2,300 frame. After riding my FB4 for a few months I find I really enjoy the fat bike experience, but would really like a lighter bike.

I can't speak for everyone out there, but from my position if I did buy one of these bikes, I am not taking a bike purchase away from Fatback or 907. If it came down to it, if this cheap carbon fiber bike doesn't pan out, I simply will ride the FB4 and won't buy another bike right now.

I do have pangs of guilt in thinking about these frames (and the FB4), but I don't really understand the legal ramifications of mold ownership etc. I hate to support thievery, I guess I assume that whatever they are doing is legal or it would be challenged, maybe that's naive. Like it or not, 907 and other high end bike manufacturers will have to combat the low end retailers, its a fact of life for them. Frankly I doubt anyone who is looking at a CF Beargrease would be tempted by a no-name Chinese frame, I could be wrong there, but if I had the cash, there would be a Beargrease in my shed right now.

Regardless of those pangs, me buying one of those frames is not hurting 907 or Fatback; me having two kids in college is definitely hurting them, but that's not going to change. I dream about buying a high zoot bike at some time in my life, a no-holds-barred-full-on-blinged-out bike, but that's many years away at this point.
 

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Good point bf, and I appreciate that position.

I've got two kids in college, so funds are tight, there's no way I can afford a $2,300 frame. After riding my FB4 for a few months I find I really enjoy the fat bike experience, but would really like a lighter bike.

I can't speak for everyone out there, but from my position if I did buy one of these bikes, I am not taking a bike purchase away from Fatback or 907. If it came down to it, if this cheap carbon fiber bike doesn't pan out, I simply will ride the FB4 and won't buy another bike right now.

I do have pangs of guilt in thinking about these frames (and the FB4), but I don't really understand the legal ramifications of mold ownership etc. I hate to support thievery, I guess I assume that whatever they are doing is legal or it would be challenged, maybe that's naive. Like it or not, 907 and other high end bike manufacturers will have to combat the low end retailers, its a fact of life for them. Frankly I doubt anyone who is looking at a CF Beargrease would be tempted by a no-name Chinese frame, I could be wrong there, but if I had the cash, there would be a Beargrease in my shed right now.

Regardless of those pangs, me buying one of those frames is not hurting 907 or Fatback; me having two kids in college is definitely hurting them, but that's not going to change. I dream about buying a high zoot bike at some time in my life, a no-holds-barred-full-on-blinged-out bike, but that's many years away at this point.
You can justify it any way you like. Don't make it right.
 
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