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Amazing article, thanks a bunch!

That’s a great read, appreciate your time writing that up!

Reckon norco can successfully design flex for both Danny and Greg? Or they stop chasing an infinitely stiff for Greg?

Amazing write up! Thanks so much for the insights Ryan!

What a superb article!

Unfortunately this won't be happening, as the donor frame is dead haha. Maybe if I can find another donor frame from someone to destroy to test I'll look at doing it, but my old frame cracked so I won't be able to modify it safely. I saw this on pink bike this morning, it's obviously a joke/gag bike, but from what little riding we saw, it really does highlight some interesting characteristics of front triangle flex. Worth a watch for sure.

A bit late to the party. This one is a though provoke for sure, looking at what the wheels do theoretically you need completely different things flex wise from the front and the rear... As for rear wheel steer on cars, it's mostly counter steer under way 50 to 80 kph, costeer above that and no steer when things go sideways. It is to add agility at low speeds (because cars are getting bigger) and stability at higher speeds.

I grew up riding dirt bikes and never really felt comfortable with MTBs. This thread brings up a lot of what I was feeling. I had a hard tail, and I would occasionally catch a hidden stump or square edge and that thing would throw me over the bars. I moved to full suspension and had the flexing issue with the Gery Fisher, then had a specialized camber pro 26inch wheel. It felt pretty good, but still seemed to be a bit too ridged and unforgiving in some instances. Last year I picked up a polygon colossus N8e and feel...

Developed for a frame designed for trunnion mount shocks. 1 step forward, 2 steps back.

I had a Gery Fisher full suspension bike way back in ~2010, don't remember the model but it was 100mm travel front and rear. The seat stays were carbon which I thought was cool, but they had no bracing between them. On climbs where I would start to pedal hard the chain would skip on the cassette. I would go through the cable tension settings after a ride and everything looked great on the stand. Would be interesting to see if it was the BB or the rear triangle torsionally twisting screwing with the chain alignment.

I like this idea on the top or bottom shock mount. I don’t really see a negative to it.

The bearing in a poly bush exists and has I think patented for bikes. https://www.instagram.com/p/Ccu0xQCM9dG/?igsh=Y3V4b3AxMjk3NWUw Same guys that developed the stem with isolation bushings. https://www.instagram.com/p/CiffPjpsIbR/?igsh=cDR1ZDZkcnB5aXhp I like the idea of having one end of the shock mount isolated on a polyurethane bushing to take up small vibration. I don't think the poly bushing would work for a main pivot but maybe for the seatstay to a rocker link pivot it might add a tuneable flex that also isolated vibration.

I found these photos of the Honda RN01 that I never noticed. Greg Minar mentioned on the, Making Up The Numbers podcast that when he went testing for Honda, the first frame they had was max stiffness. As the day went on they start drilling holes in the frame until it looked like Swiss cheese and he liked the ride feel. They went back and made the next frame to match that rigidity. So I started looking up photos and noticed there was 2 versions, one with single backbone and one had double. Not sure which was first, but cool...

I mean, look at that rear triangle, its looks ridiculously stiff. I'd want to drive over it with a truck just to develop some bearing play for comfort haha. @Ryan_Burney I'm just about to upgrade from a pretty clapped out frame, i'll see if a friend is willing to help make some bushing inserts and do some test runs. Not sure if ill get around to it, but i'd like to try it. It's a collet main pivot and rocker pivot, so if I get some PU mid durometer inserts machined I can't see why I cant just press in...

On a podcast with Dave Wiegal, he said the 3 holes in the Ironhorse Sunday link were hand drilled during test sessions to create more rider comfort.