@rongpockle so a large thin tube is to save weight I assume,I'm guessing the recumbent must flex a little,so its all a give and take in design.thanks to whoever posted this.
Hello man nice to meet you, I'm building an quadricycle with electric motor assist, just like a personal project and maybe a good business project for the future, anyway i got some doubt, you think is better use round pipe or square pipe, i mean for the best comfort and strength against the land or other situation, now I'm designing an lightweight gearbox for this project to get the maximum torque and speed at minimum stress
+Carlos Parra Round CroMo is more widely available in a greater variety of sizes and wall thicknesses. Square is often easier to jig up and cut. Round tube is usually more resistant to varied stresses but it depends on the application and directions of load.
I use to wonder why buying a gas powered moped cost as little as $600 but a tadpole or delta trike started over $1600 but now I see why. The mopeds are most likely mass produced in an automated factory setting whereas the trikes are custom built by hand in a workshop. The only way to lower the price on the trikes would be to mass produce them like the mopeds. My question now is: Would there be a similar demand?
These are Greenspeed trikes. Not sure which model exactly he's working on. I would have to check. Production of the GT and X models has gone to Taiwan. Not on their website But they still make custom models as far as I know. How's your welding going? We haven's seen any recent videos.
The right tools not only make the job easier/faster, the end result is considerably better. Try welding thin-walled tubing with a stick welder. Try doing precision miters on compound angles with an angle grinder. $20K wouldn't even buy all the tools seen in the video. When it comes to precision fab, it isn't cheap because a small variance can make a big difference.
Someone should start a business that allows people to use a workshop for building their dream bike/trike projects. The workshop could offer designs to build and encourage people to work together.
+eggaweb I often thought of that as well. Go to a shop and rent tools and time on machines. Maybe in have lockers for storing of your project and materials as you are working on the project. Cheers, Patrick
+PATRICK MCKOWEN they had this for cars when i was a kid in my town, it was used by all the navy guys and it was a 4 bay shop where you could check out tools like a library use them at the shop and check them back in when done, to rent a bay was 15$ an hour(worth it because the guy signing out the tools was a mechanic whould could help if you had problems. fantastic place,, memories from there are all good.
Ummm Rear Dodger Dodger, Quality CroMo tube is manufactured in Imperial sizes. Lower quality Taiwanese CroMo is manufactured in Metric sizes. If you cannot work in both systems you cannot do anything. About the only time I would bother Stick Welding would be on-site when I don't want to bother with a gas bottle. Stick is not appropriate for 0.9mm wall thicknesses.
What a rude little troll you are WrongerWronger! I am not saying it is not possible to stick weld 0.5mm wall tube but I can't say I have ever bothered trying. So why don't you post a video showing us how to do TIG quality welds on thin wall tubing with a stick welder. Someone of your clearly immense skill and experience ought to be able to manage 0.3mm no problem. Money where your mouth is little fellow. Or are you all just hot air and torch envy?
Learn how to weld is a good thing. I can't. Please check my channel to see how I bolted my trike together. The reason why I replied actually. In case you want to use some ideas. But with your own welder you'll have all the time to practice.
+Charles Tait This is "How to Build a Recumbent Tricycle Frame" not "How to do Pretty Welds". Once the frame is powdercoated it is impossible to pick the difference between somewhat irregular and perfectly regular scale. To do very regular looking scale each weld needs to be oriented for good hand positions and a slow pulse setting helps. However a higher frequency pulse is better for CroMo and taking the time to reset each weld is not practical for production speed. These are largely unsupported freehand. Nor do I use a footpedal. The important thing with thin walled CroMo is to get the penetration just right without overheating. Appearance is largely irrelevant. My zero weld failure record is what I actually care about. Also worth noting the welds look quite different in 2D video to real life. The best way to judge the welds is to look at the back for peno and the colour and size of the heat affected zone. Interestingly we had a guy come on board once who fancied himself as a shit hot professional TIGwelder with a large amount of experience. He found it impossible to get a good weld on the thin wall Cromo trikes. He either had too little or too much peno and very irregular welds. He was unable to get peno in the joint corners without burning through on the butt sections. He wrecked hundreds of dollars worth of CroMo then gave up in frustration. Not sure why anyone would find it that difficult but there you go. I suppose anyone can weld 4mm steel with their eyes closed but 0.9mm CroMo is a little more challenging.
Penetration is more important than aesthetics. Plus yeah, it won't show later/not energy economical/the place for it. And pretty welds do not necessarily mean strong.
By now (January 2016) this video is quite old. I love the acoustic jazz guitar and TIG shots. They both take a lot practice.
@rongpockle so a large thin tube is to save weight I assume,I'm guessing the recumbent must flex a little,so its all a give and take in design.thanks to whoever posted this.
Es un buen trabajo el que haces y mas aun de la forma que la efectuas es un buen ejemplo tomare como inspiración para hacer mis productos
Wow that is some serious stick-out you have on that electrode.
Beautiful work!
@rongpockle Ah I see! You would need a gas lens to get into those tight corners. Thank you for the reply. Is that a #6 cup?
any advise on where to study about this and wher i can get frames and play on my own.thnx
@JustWonderingHowToDo Mainframe is 1.75" in 1.2 and 1.6mm wall. Other tubes down to 0.9mm wall
How many trikes does one man need?
Nice to see the TIG welding, it is much better than the MIG welding which is so common with mass produced things.
how long is the tape on the grinder?
Hello man nice to meet you, I'm building an quadricycle with electric motor assist, just like a personal project and maybe a good business project for the future, anyway i got some doubt, you think is better use round pipe or square pipe, i mean for the best comfort and strength against the land or other situation, now I'm designing an lightweight gearbox for this project to get the maximum torque and speed at minimum stress
+Carlos Parra Round CroMo is more widely available in a greater variety of sizes and wall thicknesses. Square is often easier to jig up and cut. Round tube is usually more resistant to varied stresses but it depends on the application and directions of load.
Do you do it all by yourself?
Can they be made from adult tricycle first?
I use to wonder why buying a gas powered moped cost as little as $600 but a tadpole or delta trike started over $1600 but now I see why. The mopeds are most likely mass produced in an automated factory setting whereas the trikes are custom built by hand in a workshop. The only way to lower the price on the trikes would be to mass produce them like the mopeds. My question now is: Would there be a similar demand?
Заинтересовал его сварочный аппарат. Кто-нибудь знает что это за сварка? Какие-нибудь подробности о ней?
These are Greenspeed trikes. Not sure which model exactly he's working on. I would have to check. Production of the GT and X models has gone to Taiwan. Not on their website But they still make custom models as far as I know.
How's your welding going? We haven's seen any recent videos.
The right tools not only make the job easier/faster, the end result is considerably better. Try welding thin-walled tubing with a stick welder. Try doing precision miters on compound angles with an angle grinder. $20K wouldn't even buy all the tools seen in the video. When it comes to precision fab, it isn't cheap because a small variance can make a big difference.
Someone should start a business that allows people to use a workshop for building their dream bike/trike projects. The workshop could offer designs to build and encourage people to work together.
+eggaweb I often thought of that as well. Go to a shop and rent tools and time on machines. Maybe in have lockers for storing of your project and materials as you are working on the project.
Cheers, Patrick
+PATRICK MCKOWEN they had this for cars when i was a kid in my town, it was used by all the navy guys and it was a 4 bay shop where you could check out tools like a library use them at the shop and check them back in when done, to rent a bay was 15$ an hour(worth it because the guy signing out the tools was a mechanic whould could help if you had problems.
fantastic place,, memories from there are all good.
Stunning
What are the specs of the metal tube your are using? Thanks for sharing.
Adel Shraim 4130 CroMoly
Thanks for the quick reply.
4130 CroMo.
Qual as medidas da bicicleta
greenspeed trikes are one of the best in the market.
Nice work,if that frame was mine id only spraypainted that with transparent finish,those heat colours are to pretty to cover/coat.
Ummm Rear Dodger Dodger, Quality CroMo tube is manufactured in Imperial sizes. Lower quality Taiwanese CroMo is manufactured in Metric sizes. If you cannot work in both systems you cannot do anything. About the only time I would bother Stick Welding would be on-site when I don't want to bother with a gas bottle. Stick is not appropriate for 0.9mm wall thicknesses.
Love this video，thank you
Have you seen THE BROX HPV
QUADRACYCLE BROX HPV
music is perfect.
Looks like a Terratrike Traveler a bit...
I want this msrument and ange
@valveman12 gas lenses rule.
What a rude little troll you are WrongerWronger! I am not saying it is not possible to stick weld 0.5mm wall tube but I can't say I have ever bothered trying. So why don't you post a video showing us how to do TIG quality welds on thin wall tubing with a stick welder. Someone of your clearly immense skill and experience ought to be able to manage 0.3mm no problem. Money where your mouth is little fellow. Or are you all just hot air and torch envy?
I would prefer to have the “ugly” industrial noises, and not have the beautiful guitar work.
Learn how to weld is a good thing. I can't. Please check my channel to see how I bolted my trike together. The reason why I replied actually. In case you want to use some ideas. But with your own welder you'll have all the time to practice.
really nice quality work, wish i had access to that equipment . my trike should be ready for a test run tomorrow check my channel
Can't brag about those welds! They are ok but I'd want better.
+Charles Tait This is "How to Build a Recumbent Tricycle Frame" not "How to do Pretty Welds". Once the frame is powdercoated it is impossible to pick the difference between somewhat irregular and perfectly regular scale. To do very regular looking scale each weld needs to be oriented for good hand positions and a slow pulse setting helps. However a higher frequency pulse is better for CroMo and taking the time to reset each weld is not practical for production speed. These are largely unsupported freehand. Nor do I use a footpedal. The important thing with thin walled CroMo is to get the penetration just right without overheating. Appearance is largely irrelevant. My zero weld failure record is what I actually care about.
Also worth noting the welds look quite different in 2D video to real life. The best way to judge the welds is to look at the back for peno and the colour and size of the heat affected zone.
Interestingly we had a guy come on board once who fancied himself as a shit hot professional TIGwelder with a large amount of experience. He found it impossible to get a good weld on the thin wall Cromo trikes. He either had too little or too much peno and very irregular welds. He was unable to get peno in the joint corners without burning through on the butt sections. He wrecked hundreds of dollars worth of CroMo then gave up in frustration. Not sure why anyone would find it that difficult but there you go. I suppose anyone can weld 4mm steel with their eyes closed but 0.9mm CroMo is a little more challenging.
Penetration is more important than aesthetics. Plus yeah, it won't show later/not energy economical/the place for it. And pretty welds do not necessarily mean strong.
such a waste of shop equipment..it would be like using a MACK truck to haul a loaf of bread