DIY Di2
11-03-09, 12:00 AM
#51
Farmer tan
11-03-09, 06:25 AM
#52
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I know this is the 41 but even so, the asininity of some of the comments in this thread took me by surprise.
Matthew
11-03-09, 07:14 AM
#54
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I used to race with a guy who made his own carbon accessories - like aero bars and such. He said his biggest problem was gluing his hands to the table by mistake.
He even took a Tri-spoke and deepened the rim to what he calculated to be the deepest he could legally have. That was a profoundly ugly wheel.
He also had like five power meters and last I heard he was trying to sort out how to make his own wind tunnel. (true aero-weenie)
He even took a Tri-spoke and deepened the rim to what he calculated to be the deepest he could legally have. That was a profoundly ugly wheel.
He also had like five power meters and last I heard he was trying to sort out how to make his own wind tunnel. (true aero-weenie)
11-03-09, 07:18 AM
#55
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Also, this guy might very well be able to properly repair CF frames. That's worth something in this day and age.
11-03-09, 07:29 AM
#56
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11-03-09, 07:35 AM
#57
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yeah, but I'll bet it was a satisfying project...especially if it worked. and he saved some money.
one has to be a world-class contraption-builder to appreciate this. I can appreciate it.
one has to be a world-class contraption-builder to appreciate this. I can appreciate it.
11-03-09, 08:07 AM
#58
Je pose, donc je suis.
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I wouldn't call that "isn't too hard to build". Just because some people with bachelor's of electrical engineering degrees have the skills to build one, doesn't make it easy.
Hell, I'm an EE senior and I couldn't build this without a lot of reading and time and effort.
Hell, I'm an EE senior and I couldn't build this without a lot of reading and time and effort.
11-03-09, 08:15 AM
#60
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11-03-09, 08:23 AM
#61
Genetics have failed me
I wonder if it has auto-trim like Di2.
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11-03-09, 08:40 AM
#62
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I gotta give the person credit for trying and it probably does work. I can only imagine how fast it would shift with high torque high speed servos. Some of them are rated at .09 seconds for 90* of rotation. You could switch a gear in .02 seconds at the touch of a button. Granted it isn't pretty but if the wiring was routed inside and pockets built in to the frame to house the servos with just a little extra bracing it would probably look sharp.
I am sure I'm not the only one that can't afford a full Di2 kit. More power to the fella.
I am sure I'm not the only one that can't afford a full Di2 kit. More power to the fella.
11-03-09, 08:43 AM
#63
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thats is probably the ugliest monstrosity i have ever seen but it all honesty that is how new things start before they end up looking like Di2. I give him an A+ for effort but I seriously doubt those servos will hold up. I used to race R/C cars and even with $150 servo's they could not meet that demand. The torque they put out is pretty small. Also not sure about how this is programmed but the front shifter looks like a simple 2 position setup with no trim (looks like he is using a toggle switch for the front).
11-03-09, 09:03 AM
#64
stole your bike
11-03-09, 10:19 AM
#65
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you wouldn't know what creativity was, even if it fell on you.
who cares about that kind of effort?
perhaps you should go ride your bike without a helmet.
who cares about that kind of effort?
perhaps you should go ride your bike without a helmet.
Last edited by botto; 11-03-09 at 10:30 AM.
11-03-09, 10:34 AM
#66
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you wouldn't know what creativity was, even if it fell on you.
who cares about that kind of effort?
perhaps you should go ride your bike without a helmet.
who cares about that kind of effort?
perhaps you should go ride your bike without a helmet.
11-03-09, 10:37 AM
#68
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I like it. It takes a big man to make his own stuff and then post it on the internet. Pioneering spirit is always a good thing. Kudos to that guy.
11-03-09, 10:40 AM
#69
Lost
"prototype", a lot of good idea start out a little rough around the edges, refinement comes later. bravo to this guy,
11-03-09, 10:50 AM
#70
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I agree. I can't imagine actually riding it in a race, but as a proof of concept, I'm impressed (assuming it works the way it looks like it's supposed to).
11-03-09, 11:00 AM
#72
Carpe Diem
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It looks a lot cleaner now (and it looks like 4.8v):
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11-03-09, 11:11 AM
#75
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