Instructables
  I ride bikes........and I use bikes to work.  I consider my bikes "working bikes".   I only have pictures of a finished product and I will do the best I can.   I have built and broken lots of trailers. It has taken my years to get this far and this one is not perfect either.
  The solid weight I can carry will surpass the safe use of conventional V-breaks and I had 5 pallets stacked on it only to get a small bounce going down the road. (Tire pressure is everything!) 
  This is not my own design.  I rode pedal taxi for years in Phoenix.  This trailer is made from a hand truck and is modeled after a 3 passenger taxi that came from San Diego.
  This main photo is on a "test" run (for beer!) and taken by myself.
 
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Step 1: Get a hand truck.

Picture of Get a hand truck.
   This is a Harbor Freight hand truck with 10" wheels.  Unfortunately,  I started this project just before I found out about Instructables.  I will do the best I can and will answer question.
  I used a grinder with a cut off  and grinding wheels, hack saw, tubing bender, drill, and a welder.   Other than the hand truck you will need some 1/2" iron pipe, 5/8" iron rod stock, 1" flat washers, and various parts for the hitch. (in later steps)
1.I cut the welds off the center tube at the cross members and cut the tube itself at the handle where your hand goes.
2. At the bottom cross member cut the outer tube on both sides and you will have a large U with 2 cross members and some tube from the handle still attached.
3.Cut off the tongue of the dolly flush at the tire guards.
4.Use a tubing bender and bend the center tube to fit YOUR bike.(this picture is how I sized this trailer around the tires on MY bike (700c not 26"). Your situation will be and look different.  The 1/2" iron pipe is used to size the distance to your hitch)
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Megrathea693 years ago
Megrathea69 here,just joined recently-seen your handtruck/barrel trailer, I made 2 trailers for my bike in jan/ feb 2010,one with wood and plastic 8 inch
kids electric buggy wheels with a 27 litre plastic storage box and the other trailer was made from the bottom of a pram with slightly large spoked wheels.
After a problem with the hitch i added 2 heels and both trailers have 4 wheels and have worked without fault since then in wet or dry conditions. Have also posted an article on a site called biketrailerblkog.com site - look for user: Neil1801. If you have not heard of this site it may be of some interest to you as well.
onrust (author)  Megrathea691 year ago
http://www.bikeshophub.com/blogs/

Thanks for the link. there is some great stuff there. Can you send me a link to what you made or even post a photo here....or here:
http://www.instructables.com/community/Post-your-bikes/
Santawon2 years ago
This is just too cool to pass, I am definitely making one of these. My neighbors already think I am crazy. Thanks for the ideas

onrust (author)  Santawon1 year ago
This is a good one to cinch the deal. Good luck!
gvillegas11 year ago
Good!
mattbomb3 years ago
can you carrie water in that
martzsam3 years ago
Awesome Trailer! This is and amazing build! Since you used the barrel, would it be able to hold liquids?
onrust (author)  martzsam3 years ago
Yes, I can seal the barrel the same as a toilet tank. I drain ice water with the plugs.
martzsam onrust3 years ago
Cool! Whoa, just had awesome idea. Bike trailer + ice-chest = awesome.
dan3 years ago
good idea with the hand truck!
how are the wheel bearings holding up?

onrust (author)  dan3 years ago
It is not as much the bearings as the hubs. If you hit and ride off curbs, you will break the rim off the hub. I've broke 1 hub and just swapped it out at Harbor Freight. I have yet to have bearing problems.
BobS4 years ago
Handcarts provide the best materials for serious bike trailers!!
onrust (author)  BobS4 years ago
NO JOKE!
  Giving the fact that I have had this hand truck for years,  I put out less than $50 for this hearty trailer. 
Thanks
BobS onrust4 years ago
Blue barrels are awesome too!  I hope one day Instructables will have a blue barrel contest!
martzsam BobS3 years ago
I think they already did... or maybe it was a garden contest... a lot of blue barrels were used.
onrust (author)  BobS4 years ago
  I have seen some interesting furniture and a great Christmas "train" ride using barrels on hand carts pulled by Santa in a golf cart.
  The area I live in has lots of horse property.  People seem to have plenty of them.  I purchased this particular bottom half for $5.
knuckel4 years ago
 great instructabule! maby you can help me pimp my scooter ? lol, but seriously help me .