From Concept To Product

So the frame is 95% done -- the last bits are: 1. Fit into fairing (that top tube thing will be cut down significantly) 2. Powder Coat 3. Debug (we have more torsional flex than we want) But, it's a LOT of fun. You're butt is 7 inches off the ground. You can cruise at a pretty fast speed with relatively little effort (compared to an upright bike). And it is VERY comfortable. Just showing something coming up -- a video on this has been encoding since 11:30 last night, and it says it has 403 minutes remaining :P Feedback?

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westfw10 years ago
No offense, and not to diminish your accomplishments, but a "prototype" (hand made, one of a kind) is not usually the same as a "product." Bikes might be an exception, but... Can you build a second one, paying the people involved at least minimum wage, and still sell it at a price someone is willing to pay? Having to pay employees tends to get really depressing pretty quickly, and it's a metric I use to separate business from hobby activity. For a hobby, you don't have to place a monetary value on the time consumed... (my wife knits. Do you have any idea of how much a hand-knit sweater is worth if you pay the knitter minimum wage? Shudder.)
trebuchet03 (author)  westfw10 years ago
Can you build a second one, paying the people involved at least minimum wage, and still sell it at a price someone is willing to pay?

I would say probably -- given the cost of 'bents - especially tadpole trike 'bents. Of course, there would be a minimum to break even to pay for startup capitol (stock, notching jig equipment, etc.).

You're absolutely right about the difference between product and prototype :P We're used to calling it the product because our customers (ASME and Senior Design Course) want a prototype :P Kind of like a one off model shop - they make model prototypes, which is their product :P

That is much different than the customers you'll have when mass producing :P Not to mention, a mass produced version would have a much higher quality as a proper jig (for mass production) would be fabricated for more repeatable results).

Do you have any idea of how much a hand-knit sweater is worth if you pay the knitter minimum wage?

I do :) My grandmother did - my mother quilts. The time involved is just gargantuan :P That's why they didn't/don't sell their creations and rather give them away or use/used themselves :p

No offense
None taken - it's a very good point for anyone that wants to bring something to the masses :)
"Startup capitol" is negotiable, and frequently a problem. In cisco's early days, (pre VC) our credit wasn't good enough to buy as many parts as we needed to ship orders. Thus the need for VC.
I claim that (if (sellingPrice >= partsCost + maunfacturingCost)), then you have yourself a "product." Cost of Sales, Facilities, inventory, etc is all part of the difference between a "product" and a "business."
crapflinger10 years ago
where's the steering? hand levers on the front 2 wheels? what about building in adjustability? or will they have to be custom built for each "purchase"?
trebuchet03 (author)  crapflinger10 years ago
where's the steering? hand levers on the front 2 wheels?
Yes, direct steering with sensitivity adjustment :)

what about building in adjustability? or will they have to be custom built for each "purchase"?
The boom length is adjustable with two quick release latches. So it fits most xseam sizes. And if we wanted to - we could make an extra long boom for very tall riders :) That silvery part is what slides (and clamps down) on another tube inside of it.

You're next question may be... what is Xseam? If you sit upright against a wall with your legs straight out -- the distance from the wall to the bottom of your feet :) This is not the same as inseam that you would normally use for "regular" bike fitment :)
xseam = distance from the ass to the heel in a seated position hehehe
trebuchet03 (author)  crapflinger10 years ago
basically -- but technically the small of your back will be against the back of a seat..... unless you sit upside down or your butt is located on your back :P
CameronSS10 years ago
Hey! I came up with that design two years ago! Why is it that every time I have a brilliant idea, someone else publishes it before I can patent it? And how did you get into my Top Secret Invention Book? Note to self: increase security on quarantine room...
trebuchet03 (author)  CameronSS10 years ago
hehe :P Tadpole trikes have been around for awhile :P The used to be called slingshots (some older 'bent riders may still call them that) :) I think the speed record in the mid 60's (something like 65mph) was held on a tadpole trike :)

Check out this trike Catrike Speed. We got to meet the designer/builder at his shop. Now, we realize how genius his seat/space frame design is. When you sit down in it and apply pressure - it tightens up and stiffens the space frame.
carbon10 years ago
So how much is it? :P How easy is it going up a hill? Damn fine piece of work, by the way.
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