Longjohn ★ Posted June 17, 2018 Share #1 Posted June 17, 2018 Without me. A friend who is new to cycling is doing the Pittsburgh to DC trail later this month. I’m loaning him my BOB trailer. He and his son are not cyclist but are doing this adventure together. Making memories. 3 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted June 17, 2018 Author Share #2 Posted June 17, 2018 I also have another friend that is doing the trail the same week. She is not new to cycling but as never done anything more than day rides. I hooked her up with a trail website and she realized it may take her longer than she thought. She added two days on to her plan. She and her husband are doing this together. He is a real noob but she said he can handle it. I’m taking them to Pittsburg and seeing them off. 1 Link to comment Share on other sites More sharing options...
Ralphie ★ Posted June 17, 2018 Share #3 Posted June 17, 2018 51 minutes ago, Longjohn said: I’m taking them to Pittsburg and seeing them off. Don;t forget the spaghetti! 1 Link to comment Share on other sites More sharing options...
donkpow Posted June 17, 2018 Share #4 Posted June 17, 2018 Nice. Does the trailer use a QR skewer to attach to the bike? 1 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted June 18, 2018 Author Share #5 Posted June 18, 2018 On 6/17/2018 at 10:01 AM, donkpow said: Nice. Does the trailer use a QR skewer to attach to the bike? Yes it does. I thought about buying an extra one so I wouldn’t have to keep switching skewers when I loan out the trailer but it’s real easy to switch them. 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted June 19, 2018 Share #6 Posted June 19, 2018 17 hours ago, Longjohn said: Yes it does. I thought about buying an extra one so I wouldn’t have to keep switching skewers when I loan out the trailer but it’s real easy to switch them. Don is just planning his BOB heist. You are helping him refine his plan. Better put a lock on it! Tom 2 Link to comment Share on other sites More sharing options...
donkpow Posted June 19, 2018 Share #7 Posted June 19, 2018 5 hours ago, Razors Edge said: Don is just planning his BOB heist. You are helping him refine his plan. Better put a lock on it! Tom I'd like to build a trailer using my own specs. I can purchase BOB components for the more complex bits. 1 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted July 4, 2018 Author Share #8 Posted July 4, 2018 Update on my friends adventure: Both of the pairs of cyclists completed the adventure all the way to DC mile marker 0. The married couple posted daily reports and lots of photos. The lady complained about the climbing into Shepardstown and into the KOA campground in Harpers Ferry. They went for campgrounds with hot showers and electric and swimming pools wherever possible. Climbing three miles in Harpers Ferry in 100 degree heat almost broke her. She said she would never do that again. The father and son that borrowed BOB did 83 miles the first day, two 60 miles days and two fifty mile days. They said the trip was more aggressive than they thought it would be but they had a great time and made memories. 3 1 Link to comment Share on other sites More sharing options...
Rattlecan ★ Posted November 7, 2018 Share #9 Posted November 7, 2018 I've had my BoB for 20 years. When I first bought it, I was between marriages, and used it for self supported touring. These days, I use it for utility runs, but I hope to do another multi day trip with it some time. Maybe next summer. 2 Link to comment Share on other sites More sharing options...
donkpow Posted November 7, 2018 Share #10 Posted November 7, 2018 Could one of you guys do me a favor? I am interested in a couple of pieces of information on the fork. If you could just put an eye on it and give me some approximations, I would appreciate it. How long is the pivot tube? What diameter does it appear to be? The most difficult question relates to the angle of the pivot tube when fully installed. In all the pictures I see, it looks like the pivot tube sets off vertical. What do you think about that? I know that the fork is performing the duty of a basic universal joint, allowing movement in multiple planes. I wonder, though, if the angle of the pivot plays a role in supporting the trailer's load. Link to comment Share on other sites More sharing options...
Rattlecan ★ Posted November 7, 2018 Share #11 Posted November 7, 2018 1 hour ago, donkpow said: Could one of you guys do me a favor? I am interested in a couple of pieces of information on the fork. If you could just put an eye on it and give me some approximations, I would appreciate it. How long is the pivot tube? What diameter does it appear to be? The most difficult question relates to the angle of the pivot tube when fully installed. In all the pictures I see, it looks like the pivot tube sets off vertical. What do you think about that? I know that the fork is performing the duty of a basic universal joint, allowing movement in multiple planes. I wonder, though, if the angle of the pivot plays a role in supporting the trailer's load. I think the angle might have something to do with the handling, providing some trail on the pivot akin to the trail of the fork on the bike. Just my theory. The angle will vary depending on the size of the rear wheel of the towing bike. On my tours, I towed it behind a recumbent with a 20" rear wheel, so the pivot would have been closer to vertical than behind a larger wheel, but the whole rig was extremely stable, giving me confidence to descend hills quite fast. Anyway, I have a leveling protractor, so if you wish, I can hook my Bob up to a 26" wheel and take a reading on the angle. I can also do the other measurements for you. EDIT: When I went to look at it I realized I was thinking about the pivot shaft backwards. It slopes forward at the top, not rearward. I measure it at about 4 degrees from vertical. The length of the fork from the hitch slots to the pivot is 15 1/2" 1 1 Link to comment Share on other sites More sharing options...
donkpow Posted November 7, 2018 Share #12 Posted November 7, 2018 Oh, wow! Thanks for taking the time to gather and share the information, @Rattlecan I've been collecting pieces to build a trailer from scratch. It appears the BOB design is popular so I'm thinking the design is effective. I'm just not sure how the angle of the pivot tube plays into the scheme of things. My plan is to use a 26" wheel and drop the platform down. I get the impression that a load likes to rotate along the center line ahead of that small wheel. I'm hoping that dropping the platform results in a lower center of gravity relative to the wheel and requires more energy for the load to lift and rotate around that axis. Link to comment Share on other sites More sharing options...
Rattlecan ★ Posted November 7, 2018 Share #13 Posted November 7, 2018 2 hours ago, donkpow said: Oh, wow! Thanks for taking the time to gather and share the information, @Rattlecan I've been collecting pieces to build a trailer from scratch. It appears the BOB design is popular so I'm thinking the design is effective. I'm just not sure how the angle of the pivot tube plays into the scheme of things. My plan is to use a 26" wheel and drop the platform down. I get the impression that a load likes to rotate along the center line ahead of that small wheel. I'm hoping that dropping the platform results in a lower center of gravity relative to the wheel and requires more energy for the load to lift and rotate around that axis. A lower CoG is always better. Forgot to mention before the tubing diameter is 5/8" OD. Roughly what you get with 1/2" EMT conduit. 1 Link to comment Share on other sites More sharing options...
donkpow Posted November 7, 2018 Share #14 Posted November 7, 2018 21 minutes ago, Rattlecan said: A lower CoG is always better. Forgot to mention before the tubing diameter is 5/8" OD. Roughly what you get with 1/2" EMT conduit. I've got a piece of lawn mower handle I have been saving for that. 2 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted November 9, 2018 Author Share #15 Posted November 9, 2018 On 11/7/2018 at 3:13 PM, donkpow said: I've got a piece of lawn mower handle I have been saving for that. I hope it’s a strong lawn mower handle. Every lawn mower i’ve owned the handle has been the downfall. Link to comment Share on other sites More sharing options...
Longjohn ★ Posted November 9, 2018 Author Share #16 Posted November 9, 2018 I’m not sure what grade of steel Bob uses (probably somewhere in the specs) but they hold up. Nashbar used to sell a fake bob. It looked like a bob but cost less than half as much. I was going to buy one because I’m cheap. Then I read the reviews on the site. All but one review said “don’t buy this trailer” Everyone that bought the trailer had it break while on a trip except for the one guy that used his to haul groceries on a smooth flat road for a couple blocks to the grocery store. His hadn’t broken yet. It’s quite inconvenient on a tour to have your trailer fall apart. 1 1 Link to comment Share on other sites More sharing options...
donkpow Posted November 9, 2018 Share #17 Posted November 9, 2018 1 hour ago, Longjohn said: I’m not sure what grade of steel Bob uses (probably somewhere in the specs) but they hold up. Nashbar used to sell a fake bob. It looked like a bob but cost less than half as much. I was going to buy one because I’m cheap. Then I read the reviews on the site. All but one review said “don’t buy this trailer” Everyone that bought the trailer had it break while on a trip except for the one guy that used his to haul groceries on a smooth flat road for a couple blocks to the grocery store. His hadn’t broken yet. It’s quite inconvenient on a tour to have your trailer fall apart. I keep thinking about the weight of the components. Most important bits are standard steel parts like angle iron. I have some tubing for the tongue that I need to try and bend. It may be too light duty. Guys on the internet make trailers out of all EMT. I don't think that is a good idea. Link to comment Share on other sites More sharing options...
Longjohn ★ Posted November 9, 2018 Author Share #18 Posted November 9, 2018 6 minutes ago, donkpow said: Guys on the internet make trailers out of all EMT. I don't think that is a good idea. Do they work for Nashbar? 2 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted November 9, 2018 Author Share #19 Posted November 9, 2018 I would check out your local steel supplier and see what they have/reccomend. 1 Link to comment Share on other sites More sharing options...
Rattlecan ★ Posted November 9, 2018 Share #20 Posted November 9, 2018 35 minutes ago, donkpow said: I keep thinking about the weight of the components. Most important bits are standard steel parts like angle iron. I have some tubing for the tongue that I need to try and bend. It may be too light duty. Guys on the internet make trailers out of all EMT. I don't think that is a good idea. EMT is pretty strong. I made a rear rack for my cargo bike out of 3/4" EMT. Worst part is welding galvanized material is kind of a no no. Link to comment Share on other sites More sharing options...
donkpow Posted November 9, 2018 Share #21 Posted November 9, 2018 1 hour ago, Rattlecan said: EMT is pretty strong. I made a rear rack for my cargo bike out of 3/4" EMT. Worst part is welding galvanized material is kind of a no no. Plenty of good things can be built with thin wall material as long as you have good design. I cite as example the"Erector Set". I've done quite a bit of hot work with galvanized/zinc plated stuff. My trick is to take whatever torch is handy then burn and brush the zinc away. 2 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted November 9, 2018 Share #22 Posted November 9, 2018 1 hour ago, donkpow said: Plenty of good things can be built with thin wall material as long as you have good design. I cite as example the"Erector Set". I've done quite a bit of hot work with galvanized/zinc plated stuff. My trick is to take whatever torch is handy then burn and brush the zinc away. Ever thought about using carbon fiber. That stuff is wicked strong and uber light! 1 Link to comment Share on other sites More sharing options...
donkpow Posted November 10, 2018 Share #23 Posted November 10, 2018 1 hour ago, Razors Edge said: Ever thought about using carbon fiber. That stuff is wicked strong and uber light! I looked into CF a few years ago but didn't do anything with it. What I do is an extension of the rest of the things I do. When I was younger, I would do things that I thought I might need to know about. Now days I do what I already know. I've got the tools, skills, and some of the materials. Not trying to reinvent the wheel here. I'd probably need to set up a lab instead of a shop for CF. I have worked in fiberglass in the past. Link to comment Share on other sites More sharing options...
Longjohn ★ Posted June 5, 2019 Author Share #24 Posted June 5, 2019 On 11/9/2018 at 7:29 PM, donkpow said: I looked into CF a few years ago but didn't do anything with it. What I do is an extension of the rest of the things I do. When I was younger, I would do things that I thought I might need to know about. Now days I do what I already know. I've got the tools, skills, and some of the materials. Not trying to reinvent the wheel here. I'd probably need to set up a lab instead of a shop for CF. I have worked in fiberglass in the past. Whelp? How is the trailer build coming along? Any progress? Link to comment Share on other sites More sharing options...
donkpow Posted June 5, 2019 Share #25 Posted June 5, 2019 47 minutes ago, Longjohn said: Whelp? How is the trailer build coming along? Any progress? Zero advancement on this project. Since this thread started I bought a bike, had a crash, bought another bike, discovered a few problems in the ER, changed doctors, continue to help refinish a vacant apartment, help put in the hvac equipment in another apartment, begin the mowing season, begin the gardening season, I can't think of what else. I did acquire some scrap tubing off of some sort of modern style bed frame. This allows some design changes in that I can make more in tubing. I also 'found' a shopping cart in the ditch. I cut the basket out of it and saved the bottom for the floor of the trailer. We find the remaining parts of the cart to be useful around the working areas. It's a nice heavy duty shopping cart from one of the home centers. 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted August 14, 2019 Share #26 Posted August 14, 2019 On 6/5/2019 at 7:56 AM, donkpow said: Zero advancement on this project. And now? Two months later? Link to comment Share on other sites More sharing options...
donkpow Posted August 14, 2019 Share #27 Posted August 14, 2019 4 hours ago, Razors Edge said: And now? Two months later? Get off my back, Dude! Let's face it, I'm not getting any younger and the store isn't getting any closer. Pretty soon I'm going to need an e-bike to haul groceries. Or a wife. 2 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted August 15, 2019 Share #28 Posted August 15, 2019 21 hours ago, donkpow said: Get off my back, Dude! Let's face it, I'm not getting any younger and the store isn't getting any closer. Pretty soon I'm going to need an e-bike to haul groceries. Or a wife. Can you build one? I like these two designs (for you): Link to comment Share on other sites More sharing options...
donkpow Posted August 15, 2019 Share #29 Posted August 15, 2019 4 hours ago, Razors Edge said: Can you build one? I like these two designs (for you): Are you crazy or what? I can barely make it out of bed and you've got me building cargo bikes with electric motors! 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted August 15, 2019 Share #30 Posted August 15, 2019 2 minutes ago, donkpow said: Are you crazy or what? I can barely make it out of bed and you've got me building cargo bikes with electric motors! I'm an "idea guy". 1 Link to comment Share on other sites More sharing options...
donkpow Posted August 15, 2019 Share #31 Posted August 15, 2019 1 minute ago, Razors Edge said: I'm an "idea guy". Right, I got that part. Don't give up your day job. Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted August 15, 2019 Share #32 Posted August 15, 2019 1 hour ago, donkpow said: Right, I got that part. Don't give up your day job. And don't you get a day job ? Link to comment Share on other sites More sharing options...
donkpow Posted August 16, 2019 Share #33 Posted August 16, 2019 2 hours ago, Razors Edge said: And don't you get a day job ? Way ahead of you, bro. ? 1 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted October 11, 2019 Author Share #34 Posted October 11, 2019 Maybe build an eTrailer? That way when you have a heavy load on the trailer it pushes itself and you don’t have to modify your bike. Link to comment Share on other sites More sharing options...
donkpow Posted October 11, 2019 Share #35 Posted October 11, 2019 40 minutes ago, Longjohn said: Maybe build an eTrailer? That way when you have a heavy load on the trailer it pushes itself and you don’t have to modify your bike. Some time ago I discovered "pusher" trailers. There are quite a few variations. Electric motor, gasoline engine, cargo, no cargo capacity. I'd probably crash and end up head first into a culvert. 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted October 11, 2019 Share #36 Posted October 11, 2019 What is the world coming to????? eCargo bikes are a great idea, but eTrailers are idiotic. Link to comment Share on other sites More sharing options...
donkpow Posted October 11, 2019 Share #37 Posted October 11, 2019 2 hours ago, Razors Edge said: eCargo bikes are a great idea, but eTrailers are idiotic. Are you a crazy person? 1 Link to comment Share on other sites More sharing options...
Airehead Posted December 26, 2022 Share #38 Posted December 26, 2022 Is the trailer done, @donkpow? Link to comment Share on other sites More sharing options...
donkpow Posted December 26, 2022 Share #39 Posted December 26, 2022 9 hours ago, Airehead said: Is the trailer done, @donkpow? It's usable but I don't use it. I was thinking about scrapping it and donating the bike parts to a local charity. I've still got the little one. Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted December 27, 2022 Share #40 Posted December 27, 2022 On 12/26/2022 at 6:42 AM, donkpow said: It's usable but I don't use it. I was thinking about scrapping it and donating the bike parts to a local charity. I've still got the little one. Should have listened to my design suggestions. Link to comment Share on other sites More sharing options...
donkpow Posted December 27, 2022 Share #41 Posted December 27, 2022 Just now, Razors Edge said: Should have listened to my design suggestions. I know, I feel bad about that, too. 1 Link to comment Share on other sites More sharing options...
Dottleshead ★ Posted December 27, 2022 Share #42 Posted December 27, 2022 I’m fat and not riding and eating holiday cookies 1 1 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted December 27, 2022 Author Share #43 Posted December 27, 2022 32 minutes ago, Dottles said: I’m fat and not riding and eating holiday cookies You could still ride your ebike while you eat cookies. 1 Link to comment Share on other sites More sharing options...
Dottleshead ★ Posted December 27, 2022 Share #44 Posted December 27, 2022 1 minute ago, Longjohn said: You could still ride your ebike while you eat cookies. That’s a thought but now it’s just cold. I like warm cookies. 🙂 Link to comment Share on other sites More sharing options...
Longjohn ★ Posted December 28, 2022 Author Share #45 Posted December 28, 2022 19 hours ago, Dottles said: That’s a thought but now it’s just cold. I like warm cookies. 🙂 You need a lunchbox like Krazy has to keep your cookies warm. Link to comment Share on other sites More sharing options...
Square Wheels Posted December 28, 2022 Share #46 Posted December 28, 2022 On 12/27/2022 at 4:02 PM, Longjohn said: You could still ride your ebike while you eat cookies. @Razors Edge, can he ride on a trainer and still have it count? 1 Link to comment Share on other sites More sharing options...
Razors Edge ★ Posted December 30, 2022 Share #47 Posted December 30, 2022 On 12/28/2022 at 6:08 PM, Square Wheels said: @Razors Edge, can he ride on a trainer and still have it count? Yep. It will count towards his waistline 1 Link to comment Share on other sites More sharing options...
Airehead Posted February 5, 2023 Share #48 Posted February 5, 2023 How did your friend’s trip with the BOB go? Link to comment Share on other sites More sharing options...
Longjohn ★ Posted January 22 Author Share #49 Posted January 22 On 2/4/2023 at 9:00 PM, Airehead said: How did your friend’s trip with the BOB go? Oops, just saw this. He loaded the trailer and took some training rides and then decided to travel light and just used his panniers. He said he and his son had a great time but he should have taken my advice and taken a couple more days so they could have stopped and smelled the roses. 1 Link to comment Share on other sites More sharing options...
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