You kind contridicted you self there...

You are right that if you threw your weight dow on the pedals, the frame sections would go in opposite directions...

but if they are going in opposite directions, obviously you are pushing down on the rear triangle, then the front triangle is gonna go up...

Therefore the rear is pulling down on the lowwer shock eyelett, and the front is pulling up on the upper eyelett...

Therefore they are trying to extend the shock(which ofcorse it can't do), so the frame would feel rigid(when standing)...

and ofcorse the opposite would happen when you shift you weight to the front triangle(by sitting on the seat)...

Think of it also like this. If you were rolloing along, sitting on the seat, the force of a boump would push the rear triangle(in relation to the front triangle) up and rearward(the direction the paralell links swing). The links would carry the rear triangle in that direction...

Well, with the rear triangle moving up and rearward, the BB conected to it would as well...

If you shifted you weight to the BB(pedals), your weight pushing downward, would contradict the upward motion due to the bump, and if the suspension can't move in the direction of compressing the shock, then it is going to feel rigid.

The shock's angle is off, because this was just a rough sketch(not finalized).

Your idea about an extra shock, is one I have thought about, but one, it would not have the strucktural quallity of the link(too much side to side flex), and two, it would kinda defeat the purpose of this design. The maid idea here, is that when a person stands up to sprint that the shock is worked the opposite of compressing, so that not a single bit of energy gets wasted on compressing it. Also, this frame would be mareted towards XC racing, and if an XC racer was on it, they would likely take the "Rock garden" more calmly than a FR'er. Etc...

The extra shock idea, would probably be best a second generation/addition frame, if the first generation idea frame was put on the market and done good.

Also, the "Force on the upper link"... This could be handled in two ways, one, the links could be placed farther appart, and place the shock between them, and two, the links are currantly paralell, but could be moved slightly to make the rear triangle move in a more Arched Path.

Thanks for the possitive input.

Not with a four bar linkage it hasn't!

This is designed to give a different effect than the usual single pivot URT. Get some lessons in physics!

I have had many a physics class. the engineering books in my basement would agree with me. the problem that your going to encounter is that your only really going to compress the shock when you sit (as you mentioned) in which case this is really only good for xc riders who stand when they pedal up hills which you of all people should know is a bad technique.

Standing to pedal up a hill, may be a bad technique, but I'm just aiming to make a product that best suits their rideing style... You know, "give the market what it asks for"... In a race, whos gonna win up the hill, the guy on the bobbing fullie, or the guy on this? And at the end of the race, who's gonna have back fatigue, the guy on the H-T, or the guy on this?

I'm aiming for the best of both worlds.

Atleast you're one of the few people who can see that it would only compress when sitting(unlike half these other morons).

Another area of riding that brought this idea to mind, is comuting on the pothole filled roads where I live. I want a bike that has suppleness over potholes, speedbumps, etc., but yet feels like a hardtail, when I stand up to sprint from a stop at a light. Pretty much, I want the actions/set-up of a H-T with a suspension seat post, but that with the performance of a suspension frame... When I had a fullie for a while, I love the freedom of sitting a pedaling right over bumps, but when it came to sprinting away from lights, it felt so slow and sluggish from the suspension bobbing. This is when I thought, how could I make a bike with the best of both worlds, but with better performance than a H-T/sus. S-P...?

Catch my drift...?

i understand this but i think there are better solutions that could be done with a better suspention system..

Well there may be better designs to achieve this, but untill someone comes up with that better design, then this is the only one I have for now...

Hopefully this summer I can find someone with a welder to let me build some of my ideas(I got more than just the designs I've put on here, and ones that would get allot more bitching than this one...)

One thing i think that could work far better is a Floating shock set up with a "loop" that goes down and arround to prevent pedal issues.

Yeah, I've though about the floater, and especially placing the links parther appart, kind of like DW-link...

But as mentioned, this is just a quick scetch, and nowhere near finallized...

Atleast you see the way it work(unlike some of these other...). As for "When you hit large drops"... well this design wouldn't be made for that. This was designed with the completely opposite end of the market in mind. This would be for the hard-core XC racer, who wants to be able to stand up and sprint up the hills, but also be able to sit, without his a$$ and back regretting it later...

A better designed version of this, would probably need some kind of a scizor-link, to limmit the rebound of the suspension. This would be in order to keep from damaging the shock via "Hyper-Extention". Without that, even the first small drop, and that shock would be destroyed...