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CARVE prototype pedals

EVRAC

EVRAC

Monkey
Jun 21, 2004
757
19
Port Coquitlam, B.C., Canada
Over 6 years in development. This is my final project for my "Manufacturing Technology" bachelor degree. I've made 20 sets for testing. These were machined from solid blocks of 6061, but if I go into production I'll be getting a custom extrusion made. Revolutionary internal configuration that properly addresses both axial and radial loads. Massive double-lip spring-loaded main seal. Huge 14mm axle tapers to 13mm at the outboard end. Very robust design has no small bearings or c-clips. Axle is hardened and ground 4140 with a Cromium Nitrate coating for wear resistance and corrosion protection. Pins have a hex base so you can always service them.
Used the first pair for three days at Whistler and they worked out perfectly. Awesome grip. Nice thin concave feel. Big platform offered lots of support and stability.

The SolidWorks model, the stereolithography (3D printer) prototype and the first finish-machined prototype.

What do you guys think?
 

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punkassean

punkassean

Turbo Monkey
Feb 3, 2002
4,561
0
SC, CA
very nice! I'm a picky mofo (especially when it comes to pedals) and I'd definitely give those a shot. One question though. Why not put the center strut in the dead center? I'm guessing you placed it off-center because the majority of impacts/loads occur towards the outboard end of the pedal. What do you think the odds are of cracking off the inner corner of the platform though?
 
Iridemtb

Iridemtb

Turbo Monkey
Feb 2, 2007
1,497
-1
I like how they are low profile, but they still have a lot of surface area for your feet. They look good for no-footed tricks, and they look like they'll stick good on the tacky sections of the trail.
 
muddy beast

muddy beast

Turbo Monkey
Nov 26, 2005
1,815
0
punkassean said:
...Why not put the center strut in the dead center?...
Click to expand...
I dont think it is off center...i think thats just the angle of the pedals so they can bounce off rocks.

Could be wrong though?:bonk:

As for the pedals...they look sick! Wonder how much they weigh though...(Not that I honestly care, but I'm curious)
 
vitox

vitox

Turbo Monkey
Sep 23, 2001
2,936
1
Santiago du Chili
hey i have to say i love every thing about them save for the gothic part, only one question, was the call to put the crossmember (for the lack of a better word, or the knowledge of the correct term, actually) slightly outboard a biomechanical or structural one?
 
knollybikes.com

knollybikes.com

Chimp
Jun 16, 2004
34
0
Vancouver BC
I had a good look at one of the prototypes this weekend in Whistler: these pedals look awesome!

I personally feel that there is a serious lack of high quality pedals available in the market. Since my 1999 Profile Racing Gas Gas pedals died a few seasons ago (by FAR the best pedal I had ever used until recently: axles NEVER bent, set screws NEVER fell out, bearings lasted 6 seasons!), every other pedal that I have tried has died within a few months. This includes Shimano DX and all the rebranded Wellgos (wellgo, Axiom, Easton, etc...) and the hideously bad 50/50 pedals (at least in our Pac. NW riding conditions).

Evrac's pedals look fantastic - pictures don't do them justice. I'll be hopefully rocking a set in the next few weeks to get some real life riding on them.

Knolly Bikes has been looking for a good, solid OEM pedal to offer with some of our higher end build kits - until recently we have found nothing. Now it looks like there might be a couple of locally made options available!

Evrac - looking good!

Cheers,

Noel
 
EVRAC

EVRAC

Monkey
Jun 21, 2004
757
19
Port Coquitlam, B.C., Canada
Thanks everyone. Keep the comments coming.

The offset crossmember was for lots of reasons. One was to place those 2 inside pins a little farther out, second was to better support the pressure from the outside of your foot (there's almost no pressure under the arch), third was because more impacts happen farther away from center and fourth was purely for style. I felt it gave it a little more character.

For no-footers, the seal gives a slight resistance to free spin that I can only describe as "silky". If you spin them hard by hand they go about 7/8 of the way around. Just lovely.

I didn't mention it, but these babies are running an oil bath lubrication. I'm hoping that maintenance will be a yearly oil change.

Weight is about 500g/set, but I haven't had them on a digital scale yet. Production versions will be slightly lighter too. Don't forget that's a fat, full length axle in there. Not to diss other designs, but there's a certain new USA made pedal that had it's own thread the other day that bragged about it's 7/16ths axle. That's .4375 of an inch. I've seen1/2" axles bend, and mine are .551".

The pedal is only 0.70 thick at the center and even thinner through the concave.

Noel, you're on the list. I've been meaning to email you. Stoked to see you at whis. We need to talk.

Motomike and xy9ine, sorry but all 20 are now spoken for.
(well technically 19 are so there's a chance....)

Production retail price is yet to be determined, but comparable with other high end pedals.

You guys should see the huge thesis I had to write describing in great detail every stage of the design and manufacture process. Stress concentration points, fatigue limits, bending and shear stress, heat treatment studies, surface finishes, machining parameters, fixturing, etc... It's taken me all bloody summer and it's still not done.
 
F

FarkinRyan

Monkey
Dec 15, 2003
611
192
Pemberton, BC
I would tap that like a junkie tapping a needle. Those look seriously nice, especially for something that's at this point only a final project. I sincerely hope those see full-scale production some day.
 
bullcrew

bullcrew

3 Dude Approved
Dec 8, 2004
8,905
2,565
I'm dude playing dude pretending to b another dude
EVRAC said:
Not to diss other designs, but there's a certain new USA made pedal that had it's own thread the other day that bragged about it's 7/16ths axle. That's .4375 of an inch. I've seen1/2" axles bend, and mine are .551".

The pedal is only 0.70 thick at the center and even thinner through the concave.
Click to expand...
Regarding twenty6 pedals:
Aside of the fact that the axles are also military grade ti, the shearing test was done on them and your cranks will break before the pedals let loose.
Bigger is not always better, be it the case go with BMX pedals. Weight to strength I would guess the twenty6 pedals are stronger. I weigh 230+ and land extremely hard as well as do drops to flat, Smack the He!! outa rock gardns and I wouldnt put potentially week parts on my bike. My twenty6 pedals will be here wed. I will thrash and update about them at the end of season.
Tyler used a different Ti originally when he started, he is using a stronger ti than originally planned due to rider weights and axle problems of other companies pedals in the past.
Not that I don't like yours they rock, I love the look and the build. The weight is kinda harsh but thats another issue. 2 :thumb:'s up to them good job.
Look forward to hearing how they perform.

They look kinda like Easton flatboys.
 
H

Hans

Monkey
Aug 8, 2003
196
0
Copenhagen, Denmark
vitox said:
hey i have to say i love every thing about them save for the gothic part, only one question, was the call to put the crossmember (for the lack of a better word, or the knowledge of the correct term, actually) slightly outboard a biomechanical or structural one?
Click to expand...
Second the goth part...
 
R

Rob Munro

Monkey
Jul 22, 2005
205
0
wow, all this work and thesis for a bachelor's degree? what school? I want my son to go there (if I ever have a son). And bachelors degree or not, you could do well selling these pedals. I can't wait to see your Masters project.

The placement of the cross-members is brilliant. I'm sure it was a conscious decision, but I'm wondering if you considered adding a pin to the center row, making it three across? With your top mount design it would be easy to add an extra, and no one would complain about having too many pins.

The production set you tested looks unharmed. Did you smack any rocks?
 
vitox

vitox

Turbo Monkey
Sep 23, 2001
2,936
1
Santiago du Chili
EVRAC said:
vitox - why no love for the gothic?
Click to expand...
well your design -to me- is sort of non-goth, its very functional and straightforward, efficient if you like, and goth is sort of the opposite. that and i generally dont have much love for gothic. oh while we're at it, PM me if you want them ft bill tested.
 
sittingduck

sittingduck

Turbo Monkey
Jun 22, 2007
1,958
2
Oregon
Those look very nice. Excellent work!

Someone mentioned the twenty6 pedals, they look nice as well, but I don't understand why you would put the inboard bearing that far away from the crank arm.... it seems to me that the closer your bearing is to the crank, the less leverage is going to be placed on the spindle.
 
EVRAC

EVRAC

Monkey
Jun 21, 2004
757
19
Port Coquitlam, B.C., Canada
jamesdc said:
So are these pedals ever going to be avaliable?
Click to expand...

Yes, I sure hope so! I've come to an arrangement with a local bike company who will be taking over production and distribution. I'm way too busy with school to actually start up a company and try to market these, so I hope this works out for everyone. Details will follow soon....
 
TA..

TA..

!
Aug 21, 2007
228
0
Bionics department
EVRAC said:
Yes, I sure hope so! I've come to an arrangement with a local bike company who will be taking over production and distribution. I'm way too busy with school to actually start up a company and try to market these, so I hope this works out for everyone. Details will follow soon....
Click to expand...
Well they look great and sound good, the last part could be good or bad, depending on how the bike company want to manafacture and market them cost vs profit etc, if they short cut your standards that won't help it, if its Noel Im sure they will be outstanding and I will be linning up for a pair they look good to me:cheers:
 
RMboy

RMboy

Monkey
Dec 1, 2006
879
0
England the Great...
bullcrew said:
Regarding twenty6 pedals:
Aside of the fact that the axles are also military grade ti, the shearing test was done on them and your cranks will break before the pedals let loose.
Bigger is not always better, be it the case go with BMX pedals. Weight to strength I would guess the twenty6 pedals are stronger. I weigh 230+ and land extremely hard as well as do drops to flat, Smack the He!! outa rock gardns and I wouldnt put potentially week parts on my bike. My twenty6 pedals will be here wed. I will thrash and update about them at the end of season.
Tyler used a different Ti originally when he started, he is using a stronger ti than originally planned due to rider weights and axle problems of other companies pedals in the past.
Not that I don't like yours they rock, I love the look and the build. The weight is kinda harsh but thats another issue. 2 :thumb:'s up to them good job.
Look forward to hearing how they perform.

They look kinda like Easton flatboys.
Click to expand...
LOL they look nothing like easton flat boys!!! you wearing you glasses mate!!

Military grade ti....uhmm ive heard that before
 
FOXROX

FOXROX

Turbo Monkey
Jun 23, 2007
2,120
0
hambur,nj
i think they are very nice.... but....i can feel the hole in the glory hole pedals... how sore do your feet get from them?
 
buildyourown

buildyourown

Turbo Monkey
Feb 9, 2004
4,832
0
South Seattle
bullcrew said:
Regarding twenty6 pedals:
Aside of the fact that the axles are also military grade ti, the shearing test was done on them and your cranks will break before the pedals let loose.
Click to expand...


You know 4140 is a lot stronger than Ti, right?
And military grade? Any material with a cert can be military grade. Pallets have to be made out of "militray grade spruce". The term has nothing to do with strength.
 
J

JRogers

talks too much
Mar 19, 2002
3,785
1
Claremont, CA
buildyourown said:
You know 4140 is a lot stronger than Ti, right?
And military grade? Any material with a cert can be military grade. Pallets have to be made out of "militray grade spruce". The term has nothing to do with strength.
Click to expand...
Yeah, I don't see most pedal mfgs putting Ti axles on DH pedals...usually they are the kind of pedals that come with a weight limit...
 
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