Electric Motorcycle Build - E-Bike - Gen II, Ep 2: Girder Forks & PDS Suspension
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- Опубліковано 25 сер 2024
- Electric Motorcycle Build - E-Bike - Gen II, Ep 2: Girder Forks & PDS Suspension
In this video I show you how I built the girder forks and PDS suspension linkage for my new custom electric motorcycle.
Chassis video: • Electric Motorcycle Bu...
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Website: www.resystech.com
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I appreciate the amount of information you provide. Most other UA-camrs are just ASMR fluff.
everytime you post, you make several several motorcycle companies nervous
Those front forks are super impressive James. Great work as per usual!
For never doing any machining on the lathe before, you did a pretty dang good job!
I love seeing the level of dirt, dust, and grime on the original forks, as well as the front wheel and back hub motor. That isn't sarcasm: it's good to see that the bike you made two years ago got two solid years of reliable use.
Beautiful work. I totally agree with your mechanical design choices to offset that box on wheels feel. Looking forward to seeing your next episode!
This is crazy impressive, the amount of thought you gave this and implemented is excellent. The bike looks amazing.
have followed you for years, always love to watch you work! hope I can have my own shop someday, if not work for someone with one! im a repair tech currently.
Those Girder forks really seems nice, I have seen the making of them for the first time in this video and it was a new and very nice experience. Looking forward to see this bike running.
Wow you are a craftsman! I really enjoyed the creativity and skill that went into the frame and design. Looking forward to the rest of the build! I think you’d benefit greatly from a plasma CNC!
this is work of art. you got skill !!!
Can't wait to see the finished bike. Looks amazing!
Interesting idea and good custom design. For the forest, massive (my opinion), but in general - a good idea. The main thing is that the designer himself likes the result. We will follow! And it's nice to watch such projects.
This is awesome, James! Really enjoying following along on the build. Looking forward to the next instalment. Seasons greetings to you too.
Absolutely love this build James - that front end particularly really makes it special
Шикарный байк должен получиться! У Джеймса руки растут из правильного места 👍
Been around bikes all my life.....Truly humbled by the knowledge and innovation in this vid.....
This bike looks like something from the future. That fork looks so sick.
The progressive spacing of turns of the front coil does cause progressive (increasing with compression) spring rate, but does not affect damping. Progressive damping requires a progressive internal damper (shock absorber) design, or a progressive linkage.
I always wait for your video
hope to be updated often 😍
I love that you went with a linkage front suspension. Frame looks great.
Being a fabricator my self for years this job from the jig to the machining is first rate very well done ,Ps a tube notcher and plasma would save time .awsome job a real labour of love .
Thanks 👍
Nothing beats a truss design. Just awesome
Outstanding design and engineered with proficiency way beyond my level. Was so impressed by BMW's Telelever suspension in the early 90's that the thought of diving forks puts me off riding. I hardly ever ride anything else. Not that yours isn't a massive leap forward compared to them!! 🤗
There are several alternatives to conventional telescopic forks, if you are really interested. These girder forks (with the entire linkage turning on a steering post), double leading A-arm designs (in which the A-arms pivot on the fixed structure and the steering links to a hub/fork carrier like a car suspension), Telelever (which is essentially a MacPherson strut turned forward instead of sideways), and various hub-pivot designs. Telelever is the simplest and works well.
The biggest challenge is the steering linkage. Girder forks and Telelever make steering easy (just mount handlebars on top), which is the biggest reason that they are good choices.
Genius. Really appreciate the added narration.
TY 4 sharing and we wish you a merry christmas and a happy new year as well.
Wow, It looks fantastic. Great workmanship and design!
Your workmanship is awesome, looking forward to the next video. 👍
Super rad good information very calm good footage and super awesome work good on you old sun thank you for the good entertainment I am a bike builder and I’ve been resting on my laurels you’ve motivated me to get off my ass and use my tools thank you
I LOVE this frame !
It looks like a Ducati without the engine 👍😆
This belongs at SEMA !
Superb work James. The fork is a thing of beauty (to a mechanical engineer).
Don't forget to install a kill switch on the kickstand. There's a good reason motorcycles have them.
For dummies. ICE bikes have safety sensors in the kickstand to signal to the ECU to kill the engine when the kickstand is engaged to prevent the bike from taking off unexpectedly while it's on the stand because a dummy leaves it in gear. Different situation with electric - there's no gearing to worry about that. If I turn the key, it's not going to take off unless I do something REALLY stupid like try to rev the throttle, which I understand well enough not to do. I prefer to be able to turn the bike on while the kickstand is engaged for a multitude of reasons.
Should also note that the Kelly esc has numerous safety features, one of the standards being protection against high throttle input on startup. So in the off chance that I have the throttle twisted for some stupid reason or there's a short of some kind when I turn the key, the esc trips a relay and cuts power to the motor to prevent accidental take off. Bases are covered.
@James Biggar I didn't mean an accidental take off though. Not uncommon that people ride away with the stand down.
You're right. Been there before. But that's not the reason for kickstand kill switches because the road will remind the rider to put it back up if it doesn't do it for them. The greater danger is unexpected takeoff from leaving it in gear accidentally when starting up. If the stand swung in the opposite direction then I'd be worried, but I still wouldn't feel comfortable running a fat transmission cable down there to operate a kill switch w/ a pre-charge resistor either. Kill switch wiring on an ICE is considerably thinner - spark plugs don't use anywhere near as much juice as a 28 kW motor. Have a look at the kill switch on my buggy for an example.
@@johan.mp4 да, я на своем самодельном электробайке очень часто забываю убрать подножку. Замечаю это только по звуку в поворотах, когда подножка цепляет асфальт. У меня есть на канале
Wow that is absolutely incredible
From an ordinary piece of iron, a work of art turned out. Thank you for the video.
Awesome work James, it looks fantastic - can't wait to see it finished!
Nice angle grinder skills. Don't try this at home unless you know your sh*t. Thanks for the video. Very informative and entertaining.
Love the stance. Mean af. Nailed it bro. 🤘🏽💀
You've got some cool projects. Instant sub.
@@JamesBiggar very much appreciated 🙏🏽
Hope the rest of the year will be good, and happy christmas
God Bless You Man!!! Lovely Work!!!
Outstanding work!!!
Very interesting suspension, thanks for explaining!
Wow, what a build !
Thought this was made in the USA, nope! Canada wins again !
Well done on the frame, and excellent info along the way :)!
Thanks so much for your ideas on metals.. wish i can get one of these from you....
I love the narrating man, makes it so much more fun to watch!
Rad! Looks awesome. Lost track of your vids after you finished the last bike.
Awesome work on the lathe. Even awesomer having not used it before. Surprised that the threads worked at all with that cutter. They make cutter inserts with the correct tooth angle.
Thanks! 60° thread angle is correct. Tip radius could be smaller, though. The 5 pc tool kit was technically made for threading and other tasks, but it was cheap.
It looks KILLER 😁
When i was a teen i had this Suzuki moto-cross machine and i lovede it so much 🤫😁
Impressive fabrication and design
Thanks!
You should to pick up some proper threading inserts for next time! It will give you a more accurate better looking thread! Awesome project!
Excellent design from India Visakhapatnam
Братан, смотреть твои видео - всегда настоящее наслаждение! Удачи тебе! )
so basically, you took the idea of normal suspension and made it better. nice.
This is not an original suspension design (so he didn't make any design better), but the fabrication work and the video are great.
Can't wait to see this build progress. Awesome custom frame.
Love the design
Thanks James another great set up. Merry Xmas
Love your work new subscriber love I modding ebike and scooters myself and watching inventors like yourself make stuff.
what ever this man builds, it looks amazing
Cool design shape 👌🏾
I really admire your work, you're terrific. :D
Looking good James! Look forward to the next installment!
I miss my old lathe, may be I should get one back now
Love the Hossack inspired front suspension system
Webb inspired, actually. Predates Hossack, but pretty much the same thing.
@@JamesBiggar Thanks for the explanation
Wow! Hi I'm from Philippines 🇵🇭
Amazing job...👏👏👏
nice one waiting for continuation
LOVE that front end! Nice work
Wow. Amazing work.
Christmas come early seeing this video upload! Congrats on the progress. Definitely unique from the rest of the youtube ebike builds.
This bike is already awesome!
Waiting for next episode!!!
just wow 😍 awesome effort
I wish you were my neighbour, and we were best friends, I would be in your workshop all day, just to glimpse your genius.
Cool, looks like you are having fun making that.
Another few years of hard work and I might reach the novice stage too.
Good video ! Thank you
fork looks so massive and its amazing that it have same weight. Interesting which weight is "unsuspended" comparing to regular forks? Hope I use correct word for term.
Good question, hard to say without breaking both sets down to their unsprung components. I suspect the unsprung weight for girder is probably a lb or two more if not very similar.
Looking good! 💫
Awesome video. Thank!
So cool, looking forward to watch the next one
Thanks,nice build
Hi James ❤️
long time subscriber.
What a great build, so much talent🙏👌
Im riding "Electric Unicycles" ( EUC's)
And if you ever designed one, it would blow the roof of the existing market designs 🙏
great videos, thank you👍😀
Love the fabrication video and the fact that no cnc machines were used in the process is very impressive! I wanted to design my own girder suspension but the proper linkage geometry is very tricky to come up with. How did you go about figuring out lengths and angles for the links?
Thanks! I cut out some small scale profiles of the forks, chassis and linkages from abs sheet that I had left over from the buggy build. Drilled a few extra holes in the linkages, assembled with wire and just went through the motions and kept trying different positions until I got the axle travel that I was looking for, then transferred the dimensions to cad to check with the 3d model and ensure the forks weren't going to hit anything or get jammed up under the chassis during compression and turning.
Love that bike
You are super talented individual ( equally I realise any form of criticism is frond upon !! ) , why don't you use existing stuff to enhance your vison it doesn't detract from your amazing creative skill only creates a more incisive world, thus showing sustainability and interdependency . You are a marvel and wonder I'm sure you have had many amazing a great teaches share this in your life God bless you .
Criticism isn't frowned upon if it's valid ;) I do custom because it's a passion, a challenge, and because it drives the message of self reliance home for every young person who messages me to learn how they can gain the skills and knowledge required to build their own bike from scratch, or get a job building them for a living. Using more existing parts = relying more on the industrialism and commercialism that got us into the mess we're in to begin with, and doesn't inspire others, particularly the younger generation, to take an interest in the trades, challenge themselves to be more skilled, knowledgeable and self sufficient, and thus sustainable, near as much as seeing some regular gear head like me do what big companies do for a fraction of the cost. If I used a die cast frame, for ex, and it breaks, then I need to source a replacement which may or may not be available in a junk yard for cheap. Everything that I build on my own, I can fix or rebuild on my own - I don't need to rely on someone else other than for raw materials. If others think converting an old bike would suit them better, then by all means - convert. Recycling an old bike is cheaper and simpler, but it doesn't open the door for much opportunity, professionally. Anyone can slap some old parts together to build a bike. Sadly, few can start from scratch, and that pertains to a lot of our dependencies in our modern lives.
@@JamesBiggar Thank you for explaining , and showing us all ( young and old ) what we are capable of achieving
Another great video
Wonderful job! Good job on the lathe!
Very good i like tout vidéo
❤️
amazing work!
Thanks!
That was incredibly interesting as always. Love your stuff.
Hi, love ur channel.. hope you could make a front feet electric motorcycles like those in akira
I love your videos man.
Gorgeous bike…
We exited for next part vedio
Wonderful suspension👍👍👍👍
Please make springer front end video.
Loved it good 👍 job buddy
This guy triangulates.
Wow that's amazing you're so talented sorry if the wording is weird I'm not good at English
You're doing great, no worries! Speak any language you feel comfortable with, Google can translate it for me lol
Incredible. Bravo!
Nice idea
Hi James, do you have the link or the reference of the front and rear wheels?
Thank you very much and congratulations for your really impressive work !!