Bike Trailer
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- Опубликовано: 28 авг 2024
- Carlholmgrenwoo...
This is my home built, low cost, light weight, compact bike trailer. I don't have welding skills or equipment so it's built out of plywood and aluminum scraps and a salvaged twenty inch bike wheel. It tows very well and is stable unless the load gets too top heavy. I've used It several times a week for grocery errands, trips to the big-box stores and an occasional camping trip It's my modest effort to become a little less car-dependant and a little more fit,
![Oasis - Oasis Live '25 [Official Trailer]](http://i.ytimg.com/vi/gol_JnuEtKM/mqdefault.jpg)
This is genius level design. Excellent engineering.
Rear wheel steer system is brilliant!
This is the best design among any other trailler designs ! There's a saying in my country : If you don't have an old man around you should buy one!
I love watching RUclips videos like this on bicycle trailers. Working on one right now my
self out in my woodshop.
ingenious - I'm very impressed, and very aesthetically pleasing it is too.
Out of the box thinkers are great. Cool trailer !
I love looked at this video for the past three years. It’s still the best design I’ve seen these past few years
The type of video that makes RUclips a wonderful resource of sharing information. Many thanks for sharing.
Found this via your retractable castors video, another absolutely superb design. You sir are a genius!
Wow, that's some impressive engineering. The steering is brilliant.
You are right. "Impressive" is the word. And that laminated mudguard (fender) was also worthy of mention, I think. Also, a high-viz colour like yellow makes a lot of sense. too. I just wonder what the floor was made of.. we didn't see that.
brilliant work and awesome engineering, topped off with rear wheel steering, love this design.
This is the most clever design I have seen. I like it better then any commercial trailer. I would love to see a plan for the steering as well. Thanks for sharing this.
Engineering Genius...Thanks for sharing...better than anything on the market that I have seen.
Carl, this is the most clever desing I've seen. I wish i could buy one! Good luck with your projects, you got my respect!
This is a WONDERFUL design! Excellent usage of scrounged parts, and the sleek shape is very eye-pleasing. Thank you for the inspiration--you've got my mental gears turning sir.
Awesome design! If I would have thought of it, I would consider it to be to difficult for me/over-engineerd, but you prove you have got the brains and skills to make it work, simple and effective. I’m building my own BOB YAK trailer but keeping to the swivel/steering axle between the rear wheel and the trailer
seems like a normal boring video at first, but its getting more and more interesting as I watched it. The rear wheel steering is my favorite!
Carl this is really great, the steering is really brilliant!
Very nice Carl. That rear steering is really clever. I am, like many others, very impressed.
Stanton Taylor more complicated than it needs to be, move the pivot back. This will wear and fail.
WOW! You have truly inspired me. I am both a woodworker and a cyclist and what craftsmanship. You should patent and license it to B.O.B. or some of the other manufactures of bike trailers. I love the ingenuity of the linkages and cables. It doesn't look like a cobbled together plywood special, it's real design. Very neat.
great desing! I'm from Portugal(Europe) and I just have to say this: it is so good to my ears when you say kilos! : D keep up the good work!
"Genio y figura" saludos desde Uruguay 🇺🇾 👍💪
Brilliant. Simply brilliant. Thumbs up to you sir. I might have to borrow some of your engineering for my own project. Thanks for sharing.
Nice craftsmanship.
Nice design, a lot of thought went in to this : )
This is very very impressive! I learned a lot. You keept it simple. Congrats!!
That's some incredible engineering.
Great job. It looks great and I love how good it works.
So make the trailer wider and solve the problem if you put fabric over the holes you will cut drag and make up for the width and simplify it... yes put a motor on the back.. maybe add solar cells but the ultra capacitor is the way to go. great project.
Pretty smart engineering.
A well thought-out and unique bit of engineering. It's evident you've spent some time thinking about each design parameter and how each affects the overall performance. Good job and good luck with your next project. Ride safe out there.
i
congratulations, did a nice job.
compared to other systems with joints, its solutions are much simpler
Carl, eres un genio, es el mejor carrito para bicis que he visto, no hay ninguno de tipo comercial siquiera q se acerque a tan extraordinario diseño. Mis más grandes felicitaciones por tu diseño. Como me encantaría tener uno así. Saludos desde Chile.
Very nice all around. You could take this trailer to market! Your video is well put together as too. Straight forward and to the point. And I like the demo in the end.
+Bryan Amick Thank you for the kind comments, glad you enjoyed the video.
////Carl
Nice trailer Carl. Although I think I enjoyed the ride home video the most. I don't know if you intended the music to be funny... but I loved it! The music climaxes capturing your anticipation of a closing segment.... only to start again. Then again... and again. Hahaha... Not only are you a good engineer/designer. But a comedic genius as well. Thanks for sharing with us. Garth.
The kind of intelligence you have is required for sustainability (integrates variables and factors, and then go for it). Congratulations for your generosity and I hope you take the next step the better way it could be.
Extremely clever. What an amazing invention!!!
Great Job! Very well thought out and it looks neat! Form and function is the goal and you nailed it.
Inspiring video Carl,rear wheel steer i noticed it before you mentioned it,and clever the way you made it.
+Tom Keir Eagle eyes. :-) Me too.
i'm looking to make a biketrailer as wel to go on a biking trip in great britain this summer, and since I'm a student I haven't got the money for a bob-trailer or other prebuild ones, but you not only made a good looking alternative, this improved it in some ways! I am certainly going to concider your methode when i'm building mine :-) thanks for the amazing video!
Very ingenious. Hats off to you sir.
Absolutely Brilliant!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Man, that is ingenious. Thank you for sharing this.
This is a piece of art. Amazing design!
Awesome trailer patent pending
Amazing Work. Genius
Respect! Great Job! Many greetings from Germany
cool trailer
Great !! The hitch/steering design is genius...great work and hope you're still enjoying it or have put it someone's hands that does ! Thanks
Brilliant! Best design I've seen. Real creative and practical design. I'd love to sit and chat w you...just to see your approach to other challenges. This is soimpressive to me. Kudos.
Very nice Karl first I though of was maybe painting a fish design on it a Bike Fish trailor
Maybe make Your lumber tie down in a fin shape
You must be an engineer as a very complicated setup what a very nice great job
I wish I could hit the like button a million times! This is awesome!!!
Nice steering system! wire pulling, WOW. great job. Am think i'll try to remake it, with aluminum tubes, aluminum plates and cargo nets. i'll run the wires in the tubes.
Thanks for showing your built. that a nice trailer.
techblackdog deadmeat I wish I would have photographed my first attempt at building a one-wheel bike trailer. It was made of aluminum tube and interlaced lawn chair webbing. It didn't have enough torsional stiffness - the back wheel would flop from side to side. That's why I chose to build with spruce stringers and 1/8" plywood, I've formed a box that won't twist. I'm not trying to throw cold water on your idea; I think aluminum tube and plate would make a terrific trailer - just remember to build in torsional stiffness. ////carl
cool
If you laminated with rivets and resin, aluminum and carbon fiber/kevlar panels along the side it would make a highly marketable product
A piece of engineering art!
Some nice ideas! Thanks for posting.
very well done sir......amazing....and very cool design...
this is excellent
En todo este tiempo no había visto nada igual quedó muy bien saludos
gratias por kudos. ///carl
Comparta los planos saludos
Outstanding, Great Job!
buen aporte.
Saludos desde Callao - Peru
Very clever design! :-)
Darn clever! When I first saw you riding it I was wondering how it worked. All the other single wheel trailers have a steerable yoke. I guessed there was something clever going on but I couldn't quite figure it out.
My only concern (and I'm sure you've thought of this already) is that the wear on points of contact need to be managed. The steel pin (i.e. the 6mm cap screws) will probably outlast the forks. Perhaps it should be the other way around? That is, make the pins from a softer material than the forks. The pins would be easier to replace than the forks.
Alternatively, some sort of replaceable bushing (say nylon or HDPE) on the pins would also do the trick.
Thanks for the video.
+Mark Harrison Thx for kudos. The 6mm bolts on the bike have replaceable rollers made from copper tubing. The rear wheel just slides in the fork but since the rear wheel doesn't move until the bike steers about 10 degrees, it doesn't move nearly as much as the front one does. //carl
@@CarlHolmgrenwoodworking
Once the slack is taken up do the steering angles match each other, front and rear? My guess is that the longer the trailer, the more steering action you would need to keep the trailer wheel close enough to centered to avoid overcoming the minimal yaw angle you have at the bike's axle.
Amazing!!
God bless you🙏😊👍
Brilliant
Amazing build! Also love the fender, it's a very nice touch!
wow thats great !
One thing didn't strike me well . . . where you stated the trailer handles only 45 pounds. I typically do 50 pounds in a backpack. I personally would want a trailer to haul about twice that. Otherwise you have a great design. I'm also looking to make one with no welding involved.
+Buzzards Bass Thanks for looking at my video and commenting. I've never tested the trailer to destruction. I've just noted that with more than 20 kilos, the trailer seems to flex more and feel a little less stable. I am going to develop plans by building another trailer. That will give the opportunity to test this trailer to destruction, find the weak points and establish a maximum load. Also the plans version will have a lower body so the center of gravity will be a little lower. Goran Kropp bicycled from Stockholm to Everest with a load of 70 kilos on a one wheel bike trailer. His trailer was attached to the bike seat post. His book is titled "Ultimate High". ///Carl
super bike trailer.
Really cool but over complicated but really cool.
And I might be converted to single wheel bike trailers
Great work! You gave me some great ideas! I love the steering system. I looked through your website (very impressive). By chance do you also have plans for the bike trailer?
very good! i was gonna build a trailer just like that, but myne wouldnt be as good as yours!
Clever!
Well done. I am prepering one trailer for my own and looking for some good examples and inspirations watching videos like this. Design is cool and works well, but i want to make simple, strong and cheap mechanisms. Yours looks quite expensive, isn't it? I need to think more about it. Anyway, whats the weight of this trailer?
+mat4i at 0:50 "5 Kg". Expensive? No; 1/2 sheet of Baltic Birch Plywood $20.00, used bike wheel $8.00, spruce $10.00. Hardware, Aluminium, Wire - leftovers from other projects. ///Carl
That is one trick trailer
Impressive that frame I thinking it's possible to do a swing with shock-absorbers in the upper tube. Also thinking electric motor and batteries to push and make a easy ride
Beautiful design and implementation. I would only want to know the high speed stability and disturbance rejection. A spring aligned rear wheel hitting a funny bump/hole at speed could quickly go unstable, or at least that would be my fear. I love the wood composite marriage. Surprised you didn't manage to put in some kind of inertial braking system ;)
Jon, Thankyou for the kudos. The trailer wheel is held in the straight ahead position by two fairly stiff springs. It s very stable at any speed; over any train. Inertial braking? Of course, that's the next challenge. ////carl
Nice.Would be good for a velobike streamline n all.
Bravíssimo!
This is a beautiful trailer. It would be awesome if you can take a few more detailed shots of the fork plates. I'm still trying to understand the way you've mounted those plates to the rear dropouts, and how it actually holds the trailer.
The steering and cross-streeting design is simply brilliant! You have some horizontal play ( X-axis). Does your mounting design incorporate some vertical play of the trailer (on the Y-axis)?
Once again, this is a marvelous design, and to put it bluntly, it's one that I would love to base my trailer off haha.
Thank you, Jaskrit, for the compliment. Please see about 2:50 to 4:00 of the video. The fork plates slide on two 7 mm capscrews that are permanently attached to the bike. These capscrews are screwed into permanent plates attached to the bike with clamps around the stays and with a screw into a threaded hole in the rear dropout. The bike is attached and towed by a tension spring on each side. When riding straight ahead, the springs simply hold the fork plates tight onto the 7 mm capscrews. When steering the bike to the right, the spring on the left stretches and allows the left fork to slide on the 7 mm capscrew. When steering left, the right spring stretches and the right fork slides. .
Of course the trailer can pivot on the Y-axis (the trailer pivots freely up and down as the bike moves over humps and dips).
Carl you have done a great job at designing this Trailer. Could I get a individual Part Drawing of the Trailer I would like to copy your Idea?
That's really are very great trailer but I wanted to know how much weight can it hold?
How about an electric hub with a super capacitor... How long could you make this.
cool mr Carl =)
That thing is a stunning technical achievment, I still might be nervous about rear wheel clearance with my riding style. I wonder why you do not leave the rack in place all of the time...
Damon T., Thanks for the compliment. Rear wheel clearance while turning is the the reason I think the concept is not marketable. In use, it really is not a problem; occasionally in a tight spot, I find myself getting off the bike and picking up the bike and trailer to to reposition them. Why not leave the rack in place all the time? 700 grams.......
Amazing! Is this something you are going to sell or are you giving away the "how to make it" for us? What would happen if you hung it from a extension hook (like a walking cane style) to one of the sides of the bike instead of both? Would that solve the clearance problem?
Beautiful job--I love it! Looks like you even made the fender too. Do you offer plans for your trailer? Thank you. Looks like you have some other good videos I'm going to check out.
Brian
Thanks for the kudos
I'm building a second, easily replicated trailer and developing plans as I go. Stay tuned.
Carl
nice
bravissimo
Carl, I like were you going with the aircraft theme. Might be a great way to add some additional battery space and solar panels. With your blessing may i build upon this design and add Hemp Canvas like you would skin a aircraft followed with some power film on the hood of the trailer?
Absolutely!! Your ideas sound very interesting and practical. Good Luck!
Thanks Carl, people like you are inspiring. Ill keep you updated on progress.
+Mike Klegin how did your design go?
I work minimum wage pt at a grochery store i dont have the capitol to do stuff like. But if i had the funds you can be sure i would pump out a lot of these neural misfires.
Wow, very nice! Are plans available?
John McGinnis They wil be soon! ///Carl
+Carl Holmgren Are they, Carl? I love this design.
Carl, did that ride last about 7 miles? Well done video
Thanks
+drail80s Round trip to the shopping center is 8 miles (good guess). Thanks for kudo; out of 30 videos it's my second most popular. ///Carl
yo me voy a construir uno en cuanto lo tenga se los muestro para que lo vais
Great design! That was awesome. May I ask what the cost of the build was?
About $50,00 for a sheet of 1.5m X 1.5m X 3mm Baltic Birch Plywood, maybe $20.00 for everything else. I'm a hoarder: aluminum, wire etc. came from saved scraps. ,
Too clever back wheel steer... 4:30
Any chance of publishing the plans for this? I saw on your website that they are coming soon ... but it's been over 2 years since this video.
Dave, I apologize for the misleading "coming soon" on my website. We need to change that to something like "on to-do list" . In the mean time I am shopping for wheels and material to build a second trailer from which to develop plans. With a little prodding from you - maybe this summer. ///Carl
Carl Holmgren Thanks :)
How about a few detailed photos of the trailer in the meantime? I was thinking of reverse engineering it from the video (photos would be better). I was also thinking of experimenting with carbon fiber rods instead of the spruce stringers you used. This would add strength, and allow for a heavier payload.
How big is the opening for the cargo?
Greetings from Israel.
Can you make me a two wheel steer bike???
You should sell plans to this.
+Nick Yarnes Plans are on my "to-do" list. Thanks for suggestion ////Carl
Carl Holmgren yes im interested in drawings too