could we get some exaples of what forces are put onto bikes ie. at head tubes and bb's etc. what are they built to withstand?
? for DW
- Thread starter koffee
- Start date
DW you should design a reasonably priced 4 slice toaster with polycarbonate sides so i can watch my toast cook till perfection.
hahahaha.
Im sorry, but this is surely the ADD thread of the year.
hahahaha.
Im sorry, but this is surely the ADD thread of the year.
wanna see my bike
i love pie
and acadians mom
i love pie
and acadians mom
FOr the love of god, please listen to what Ohio said.
FSR bikes, AND "ICT" bikes just about universally can be modeled as single pivot frames when it comes to pedaling performance. Braking performance is a little different story. Take a look at the 2004 SGS Team, and the 2005 Kumicho. Pedaling performance wise, the two bikes have very similar reactions. Actually, in reality, the Kumicho is an improvement. FSR bikes generally have tight radius of curvature axle paths throughout the entire travel. A Cannondale Jeckyl has a more "vertical" axlepath than an FSR bike.
dw-link bikes have a constantly widening axle path, its far from vertical. The dw-link axle path starts off with a much narrower curvature than an FSR bike, and ends up with a much wider curvature. No FSR bike, "ICT" bike, vpp bike or motorcycle suspension in the world can accomplish this unique trait that lets the dw-link bikes accelerate very efficiently in the beginning of the travel, yet still absorb then smallest of bumps in the beginning of the travel, big bumps at the end of the travel, all without any extra compression damping or noticable pedal feedback.
dw
FSR bikes, AND "ICT" bikes just about universally can be modeled as single pivot frames when it comes to pedaling performance. Braking performance is a little different story. Take a look at the 2004 SGS Team, and the 2005 Kumicho. Pedaling performance wise, the two bikes have very similar reactions. Actually, in reality, the Kumicho is an improvement. FSR bikes generally have tight radius of curvature axle paths throughout the entire travel. A Cannondale Jeckyl has a more "vertical" axlepath than an FSR bike.
dw-link bikes have a constantly widening axle path, its far from vertical. The dw-link axle path starts off with a much narrower curvature than an FSR bike, and ends up with a much wider curvature. No FSR bike, "ICT" bike, vpp bike or motorcycle suspension in the world can accomplish this unique trait that lets the dw-link bikes accelerate very efficiently in the beginning of the travel, yet still absorb then smallest of bumps in the beginning of the travel, big bumps at the end of the travel, all without any extra compression damping or noticable pedal feedback.
dw
I :heart: DWdw said:
You make me want my Sunday soo bad.
I want a sunday too, no nuts please! 
checking out the Demo thread on MTBR reminded me why I like RM...
checking out the Demo thread on MTBR reminded me why I like RM...
MTBR... :mumble:punkassean said:I want a sunday too, no nuts please!
checking out the Demo thread on MTBR reminded me why I like RM...
something tells me Weagle really loves threads like this because he gets to type alot and make himself look even smarter 
Ya know, sometimes I wonder about the whole patent process in something like this...You gotta get a patent attorney (I would think anyway), describe your idea / invention in a such a way that it's significantly different than any thing else out there, and then work with a federal government bureaucracy to top it all off...In fact, I would love to see how the process works in terms of a patent office engineer reviewing DW's system...I wonder if they really know what they're looking at, although I suppose if they have a strong understanding of dynamics and physics, they should at least get the general idea...
Its not really about describing your invention in a way that is different thatn anyone else has described it in the past, its about having an invention that is totally unique, and then describing it so that someone could build your invention using the patent document. The first part is the harder part of the two
.
Judging by what patents have been awarded for suspension systems in the past, and what is being marketed today, I would say that there is just about zero chance that the patent office has any clue whatsoever about what is actually being patented. Heck, there are plenty of people selling bike suspensions that dont understand what they are building/ patenting. Really, the more I deal with it, the more I realize how few people actually have a firm grasp of this stuff. Whatever though, thats cool with me!
dw
.Judging by what patents have been awarded for suspension systems in the past, and what is being marketed today, I would say that there is just about zero chance that the patent office has any clue whatsoever about what is actually being patented. Heck, there are plenty of people selling bike suspensions that dont understand what they are building/ patenting. Really, the more I deal with it, the more I realize how few people actually have a firm grasp of this stuff. Whatever though, thats cool with me!
dw
Kornphlake said:
They should call it the Ironhorse X-mas sinceevery day you are riding it is like x-mas day.
Depending on the bike model he,i believe ,pays one or the other.jncarpenter said:
Notice that the Flux that replaced the burner/XCE has a much flatter laying upper link.It has a more vertical axle path then the older models,and the effective pivot point now lies in the ICT patent zone.
He said the 5 spot felt like it accelerated better than his pure XC bike and he realized it was time fir a makeover.
So the Nitrus,Flux and 5 spot are ICT.Don't know for sure anout the 6 pack,it may fall into the ICT zone too.
Later J
hehe... suppose YOU'RE rightdw said:
but the team and the world cup 'look' (ie have a rocker plate at the to and and two lower pivots one attached to the bb area and the other to the rear triangle)simmilar, not a parrelle link but... do you really think that second 'LONG' was nessisary? that hurt.
Dear Dave:dw said:
This is the USPTO. Based on your comments, we have decided to get a clue. Sadly, this means your patent applications will be delayed another 3 - 5 years. We hope you understand we are only doing this to better serve you, it's not meant as retaliation for your kind words. With love, USPTO.
:nuts:
....well, after a talk with DT.....seems you are correct! Actually, they pay Spec. & EW for flux, nitros, 5 spot & 6 pack..........I stand correctedleprechaun said:
Wow, two separate royalties paid out on each frame?? No wonder they're not cheap. Even if the royalties are small that's gotta hurt the margin.
not sure what the ew costs are, but Spec is charging aorund $15 a frameOGRipper said:
hahaOGRipper said:
I guess Ill take a couple of patents based in reality and backed by physics in 3-5 years over something not based in reality or the physical world today
!Hell, its already been 3 years, cant take much longer!! (knocking on wood) (literally)
dw
hmmmm
havent heard of that before. The crossbrace should be a light press fit onto the bosses on the links. The bolts are just there to hold it all together. Maybe you can compress the crossbrace tube down a little on the wide side to get it to fit tighter to the bosses? Just thinking on my feet here.
dw
havent heard of that before. The crossbrace should be a light press fit onto the bosses on the links. The bolts are just there to hold it all together. Maybe you can compress the crossbrace tube down a little on the wide side to get it to fit tighter to the bosses? Just thinking on my feet here.
dw
So because this thread has taken 20 directions and covered as many topics I'll add one more. After searching unsuccessfully - how much does the 7point frame weigh? And more specifically how much does the frame weigh without a shock and associated hardware? TIA.
Another one. Dave, how many bikes do you have at your house, or lab, or garage or batcave?
-dAn
-dAn
Dave, I've got a technical question for you.greenreese said:
After consuming a large amount of asparagus and several dark lagers, what color is your urine? Mine is dark yellow and smells funny, but I'm wondering if evil geniuses have different metabolizing processes and therefore differently colored pee.
When you say "lab" I'm sure you mean some neat and organized workspace filled with a handful of computers, but for some reason I imagine a chem lab with beakers and flasks and bunson burners creating magic potions. No wonder they call you "the mad scientists"!dw said:
in two works - "His HOUSE"Bulldog said:
Its a nice house by they way. Here is a picture I took of Dave working on something he called project X and then mumbled something about world domination:
Last I heard (yesterday) was mid-Dec.wirly said:
that is US frames only and then complete build Sundays in January.
Right you are then. It will be lame to sit around looking at this frame during three months of winter. This is going to be the longest winter ever. Might try to get out to AZ, NV or some place for some winter DHing...not sure I can deal here in the East Coast blue state region (climatically speaking).CBJ said:
