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Fabriquer votre TRICYCLE à partir d'un CADDIE d SUPERMARCHE

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Fabriquer votre TRICYCLE à partir d'un CADDIE d SUPERMARCHE

Message  OYABIO le Lun 14 Mar - 11:55

En ANGLAIS :

Source : http://www.bicyclelaneindustries.com/bli/cartbike/

Here’s a list of other things you’ll need to complete this project:
6 or more small U-clamps (about an inch across)
1 large U-clamp (big enough to fit around the head tube of your bike)
2 matching front wheels & coinciding forks. (I would suggest at least 26inch wheels)
2-4 hose clamps
1 tin can



Take the forks and wheels and position them on the sides of the cart. You can screw around with this and try to figure out where they work best, but we found that the forks should stick past the bottom of the cart a couple inches, and should be pretty close to the back. One reason for this is that most of a cart is composed of weak little bars. If you attach the forks to those, the little welds will break, and it won’t be very strong. There are only a few strong bars that forks should be attached to. We chose a point near the back where some of the main supports are. Two of these strong bars crossed each other, and we put the U-clamps there. Put the U-clamps on, and tighten them down a bit. Make sure the cart sits level, and then tighten everything up. (I’ve highlighted the strong bars red, so they’re more visible in the picture. Notice the clamps (circled in yellow) are all attached to at least one of these.)

Now, pull the front wheel off your bike. Remove the front brake, and both the brake handles. Now spread open the neck and remove your handlebars. (You’ll want to leave the neck, as you’ll be using it later. Also, using the handlebars to spread the neck open will make the job easier later on.)

http://www.bicyclelaneindustries.com/bli/cartbike/index2.html

We tried to file the dropouts on the fork wide enough to accept the bar that runs across the bottom of the back of the basket, but gave up as we were in such a hurry to get the thing done. It evidently didn’t need to be done, but I think it might be a good idea anyway. So then you just turn the forks around, so they’re backwards and center them on the bar that runs across the bottom of the back of the cart. Use a U-clamp on each side of the fork near the bottom to attach it to a strong part of the back of the cart. Then use your big U-clamp to attach the neck to the back part of the cart. To make the attachment just a little more secure, we spread open the neck, and twisted the two pieces of the handle with a channel locks so they would slide into it, then tightened it up. To get a really tight fit, we would have needed some old tubing or tin can strips or something, but we left it as is. We also attached our gear shifters to the neck. Because the backs of most carts flap open, you’ll need to use a few hose clamps to hold it shut. We put a couple on the bottom, and a couple on the sides.

Now you’ve kind of got a choice with the brakes. You can just leave off the front one, and attach the back handle to the cart like we did. Or you can put brakes on both the forks attached to the cart, and have them up in front where all the stopping power is. This is what I would have done, but the bike I was using didn’t have any brakes, and I had trouble scrounging up even one. This is where that tin can will come in handy. You’ll have to cut strips of it to wrap around the cart handle, so you can tightly attach the brake handles. In the pictures, it looks like we duct taped ours on, but that’s just there to cover the edges of the tin can. Some grips would make the handle a bit more comfortable. (maybe some of those foam 10 speed ones or something)

I haven’t gone into every single detail about putting one of these together, because every single bike/cart combination is going to be different. With each you’ll encounter your own special brand of problems along the way. If you’ve never worked on a bike before, this might not be the project for you. Probably learning to adjust your brakes & gears, and change your tires is a good place to start. If you’ve done some work on bikes, this should come pretty easy for you. The hardest part for us was coming up with the basic design, and doing it without any welds. We’ve fixed that problem for you. Now go to it!

Just to let you know, our concern about the forks moving was well founded. Our forks do move a bit, but if the bike is moving forward, and especially with a load, the problem is self-correcting. It has yet to be a real problem. These things are pretty difficult to drive. I found that it’s much easier to steer by leaning, than by trying to turn the cart. The problem is that you have to shift your weight the opposite of the way you want to go. It’s sort of difficult to explain, but once you have yours built, you’ll see what I mean. It’s definitely not built for speed. In order to keep control, you have to move sort of slow. It’s good for getting loads of stuff (like groceries) but I wouldn’t want to use it as an every day bike (unless I was hauling a lot of stuff every day, and then I would build a trailer.)


_________________
L'élégance du Temps est celle qui démêle les structures de l'Espace qui ont masqué l'Amour à lui même (James des WINGMAKERS)

http://mysthyc.hautetfort.com/archive/2007/05/29/sciences-occultees.html
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