IsoTruss - wild frame!

I stumbled upon this and had to share. It could make for some interesting uni frames if what they claim is true. If not, it’s just cool to look at. :sunglasses:

also check out the link in the above text:

Comments? Thoughts? Anyone willing to plunk down 7,000 cold ones to tell us how it rides?

That looks remarkably like something you would find in the dumpster for something so pricey.

interesting to hear if what they claim is true though.

If I had $7,000 I’d buy one, Lifetime Warranty…

Similar geometry to my current Norco Sasquatch frame too.

Looks like a bad application of an interesting technology…or is that an interesting application of a bad technology. Hmmmmm… :astonished:

That is so ugly, I don’t think I’d get one even if they were stronger than conventional frames and I could afford it.


imagine accidentally riding through dog shit, that could get messy.

yeah imagine how much mud would get stuck in that thing, and it would be pretty harsh to fall against the frame, looks like a cheese grater

That’s my first guess. The linked site is about touting the truss design, not bikes made out of it. At the moment it looks like the bike is just an example of “see, it’s pretty strong and light” but little information is given.

Leave it to a guy named Dangerdog to think of that. :slight_smile: But he’s right. You build a mountain bike out of that stuff, the inside of the trusses is going to eventually fill up with stuff that will make it weigh a lot more than a conventional frame and be really hard to keep clean. Kind of like using radial spokes on a unicycle. The wheel may be super-stiff (laterally), but for most people it’s not worth the constant maintenance to keep it true.

Radial spoking doesn’t make a wheel any stiffer laterally; it just looks cool and has marginally less weight. Lateral stiffness depends on a combination of hub width and spoke tension.

Radial spoking should not be used for any wheels driven from the hub (such as unicycle wheels); they have no way to resist wind-up.

Regarding this frame, it looks like a typical attempt to solve a non-existent problem, and I would expect it would be much more prone to failure than conventional frame tubes.

You’re probably right, at least in terms of being able to tell the difference. In any case it makes the wheel super un-stiff in the direction of drive. The spokes act like springs and wind up each time you change speed. The easiest way to kill a radially-spoked unicycle is just by idling on it. Playing basketball is quicker though. :slight_smile:

It may hold up better than thin bicycle tubing in terms of dents, but still I wouldn’t ever want it on a mountain bike. I think they’re using the bikes more to create attention to their truss design rather than actually sell bikes.

The down tube and seat tube on this frame have something around them to prevent dirt getting into it.

The frame weighs 2.75 lbs, how many frames with a Lifetime Warranty and no rider weight limit weigh anywhere close to that low?

Plenty of other things that could get stuck in that frame too. Has anyone besides myself ever ridden through a swarm of bugs in the summer?
Or if a wasp gets stuck in there & decides to build a new home? Or what about a few drops of gel fuel, or some other stickysweet? Bet the flies would be your friend as you ride!

For all the weightwatchers it would be a perfect frame… imagine how light it could be.

Like perfect for trials if its really that strong, too.

Insane for trials, if they built it with like a 13" seat tube to keep it out of the way, could probably have a 2.5 lbs frame.

Sub 18 lbs bike anyone?

If you were really going to use one of those you’d want to skin it with plastic; that’d keep the muck out and protect your skin without adding too much weight. Oh and it’d look less scary!

It would be interesting to see a road racing version of that style of frame and have it ridden by a pro team in a race like the Tour de France.

Aerodynamics of the frame may not be good though for a road racing bike. Aerodynamics along with light weight is important for road racing.

I’m not sure if a lighter weight frame would be of any benefit since I believe they have minimum weight requirements for the Tour de France

I was thinking fiberglass. I’d still be pretty clear, and look just as cool.

My thoughts exactly.

I don’t have alot of information about this bike, but have gotten some feedback. My brother-in-law and his wife (both unicyclists btw) have been involved with some manufacturing and testing on this product. She’s in the Expert division of the National Mountain Bike Series, and he’s an avid rider as well.

Anyway, it’s my understanding that it’s a situational bike, not a bike for a racer who will own only one bike. ie, hey, if it’s a day for muddin’, i’ll be using a different bike, but that’s just my take.

Here are a few pics and some of my sister-in-laws comments after doing some test riding…

Quote from Sister-in-Law: “…I admit, I was skeptical. Just another carbon hardtail, I assumed. Too expensive…I was WRONG. This bike is amazing, and I want one in the worst way. Does everything a hardtail should–climbs like a billy goat, responsive to out-of-the-saddle efforts, and feels snappy. That was on the uphill. Turn that baby around, and the downhill is where the big surprises came. It handles like a dream, the unique carbon frame smoothes out all of the smaller impact, vibration-type bumps, it digs in on corners and holds a line with bulldog tenacity, and is incredibly stable at high speeds. It had none of the skittishness and harshness that I’ve come to expect from a hardtail, and it did it all while looking like the sexiest bike ever…”

Brother-in-Law Posing…

Sister-in-Law with the one finger lift…