Making VELOCITY STACKS From Scratch - SO SATISFYING!!!
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- Опубліковано 16 лют 2024
- How to make Velocity Stacks / Trumpets from alloy tube
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Hi Folks,
This is Dan, let me show you step by step on how I build stuff each week including my CB750 Cafe Racer & the (Honda Scrambler/Tracker build on a budget challenge) SUBSCRIBE to follow my future builds, I'm based in Australia.
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VELOCITY STACKS ➨ www.amazon.com/hz/wishlist/ls...
ALL MY MACHINERY ➨ www.machineryhouse.com.au/
I just binge-watch this whole series in the past few days. It makes me want to sell my newer bike (2017 vulcan 650s) to build a Cafe. you are doing such an amazing job and have great taste in everything You're deciding to do. Your attention to detail Is much like mine. It is so hard to find people at that same level. Wish I had a friend Like you to build stuff with. Keep up the AMAZING work.
Side note...when using your lathe...use really thin pieces of brass strips between the jaws and the part you are turning so you dont leave jaw marks or scratches on you part.
If I was you I would stick a manometer on the carbs and see how much flow you are losing with that filter setup, I suspect it's pretty high. I have done (and seen others do similar mods and the flow restriction is pretty grim compared to a pod (which has a much larger surface area) or a velocity stack that has no filtration. Even the pretty open mesh tea strainers have resulted in the need to downjet the carbs in my experience.
Yep, exactly this.
Your attention to detail really amazes me. I’m not the type of person that will just slap something together just to get it done. Everything has to flow and have a purpose for the design to visually work for me. You are building top notch bikes and parts. Plus, you’re willing to take the extra time to get it right, that’s why I love your channel.
Thank you so much mate that means a lot and i appreciate your kind words
I really like the stacks you built. The bike looks great with them installed.
Thank you mate it was a fun project to share
A large internal circlip and groove would be a good alternative to the grub screws.
No it won't because the purpose of the grub screws is to hold the stacks to the carbs.
You don't need to grip tube by putting it inside the chuck you can do it the other way around by closing the chuck slide the material over the outside of the jaws then open the chuck so it grips it from the inside. I've probably not explained it in the best way but the stepped bits on the jaws do all different things, you can fully take them out even and put them back in the other direction to put larger materials in.
Wow , thats cool ! I love hand made pieces !
one of the best creative pieces you have made Dan...very impressed. I don't have the equipment or skills but i definitely want to run velocity stacks on my moto guzzi.
Mate they are sick as, orders will be come flooding if you put an ad up, love the filter idea, something you don't get from mass produced ones. I wont some now !! It's always good to see the ones that didn't quick go right too, not many others do that, it's one of the many things that sets you apart from others on UA-cam, keep on keeping it real Dan.
Thank you mate, it's always a process of learning making mistakes and trying again untill you get it right, even if It doesn’t work you always learn something along the way, thanks for the comment I appreciate your kind words :)
The shaping on the press is so satisfying.
100% my favourite part
Great Vid buddy, I am also a clown with a lathe. I have also had lathe failures with softer material (PVC and Aluminium). So I have taken to cutting stuff oversize on the bandsaw ( maybe hacksaw ) then just facing the items in the lathe. Keep up the good work.
They look awesome. Good effort
Lovely 😍
Looks great mate!
Precious details.
Well done, Dan.
Cheers.
Thank you so much mate, Was super fun to make them
They look Mint dude , Awesome job 😁😁🤘🤘
Patience for miles!
Great work mate.
Nicely done sir
Cut a piece of stock with the same od, and the ID (slip fit) for when it's in the lathe for thin wall parts. This will keep it from crushing.
Thank you. Very informative process. You should make sure your foam won’t dissolve in petrol, because carbs do tend to spit a little bit of fuel.
Hi, lovely job. You got them at the end and they look great on the bike, thaks. Gus
Thanx Gus Always appreciate your kind words of encouragement
Great video Dan. They look super cool, job well done mate. Ride safe and take care. Cheers
Always learn from my mistakes but I'm really happy with the final result too, Thanks mate
Great fab work! But ditch those filters - for one, they’ll only keep pebbles and rocks out, not dirt or sand so you might as well not run them. Also, they significantly reduce the flow area, and placing them at the throat of the carb will only exacerbate that. Use good foam or paper filters of sufficient size or no filter at all.
Need a video of you out riding the cb750 🤙
Clever man! Looks good. Well done!
A thought...from a carburettor perspective it's better to place the filters far from the actual carburettor body. The air makes a cone when entering the carb and things like podfilters and such, which are close to that cone, will interfear with that. (Think it's called velocity, but I'm not sure) Making the engine run uneven. Or hesitate on acceleration.
Well, just a thought! You know me, I can't help it. I've been there and I just want you to know what I've learned.
Cheers!
Always good to learn from anyone with more knowledge than me so thank you for always adding your thoughts in the comments it truly does help :) have a great day John
@@CafeRacerGarage You're to kind. 🙂
noice job Dan 😀
Look sharp mate! Well done!!
Thank you 🙏
Just found your channel and subscribed. Very interesting
Nice work Dan, they look sick
Thank you so much :)
Wow what a dream mancave you have there
wahhhhoooo so nice
Hi Dan you may find a set of soft jaws bored out to the correct diameter will really help with that problem.
Very nicely done!
Thank you mate Im glad you like them as much as me :)
My goodness, Dan. I too, love velocity stacks. And they look sharp AF, along with the cheeky hidden air filter.
I'm guessing after the first two attempts, editing nulled any requirement for a language warning.
Best vid yet.
Stu. Melbourne
Haha yes I assure you the language was loud but the time I messed up the 2nd one. thanks for the comment
They look great but with those filter won't it restrict air flow with a much smaller surface area to standard
Maybe a little bit, pod filters a pain in the butt on CV carbs due to the extra flow they provide so the restriction with actually help the carbs I believe
"It's a caféracer after all".... 😊
Please no music!
Could Also 3d print those Quickly and easily.
I may build a set of those for a CB 750K cafe racer I'm building. How much rejetting did you have to do and what are the jet numbers?
I've seen ugly stacks I've seen good looking stacks your stacks are like dating a playboy playmate of the month. Nice work.
Thank you mate, best comment yet 🤣😂
You would normally use a 6 jaw chuck on thin wall material like that. Absolutely need to use a plug to grip and polished steel will help reduce the galling.
Thank you mate that's actually super helpful :)
they look really nice, but I am afraid rhe plastic mesh will be shredded over time and will enter into the engine. Moreover they will cause turbulence just before the mixing with the fuel, instead of having a laminar flow which is the entire purpose of the stack......
For starters, it is Stainless mesh and second of, I don't care about the flow, this is just replacing the annoying pod filters as I mentioned, CV carbs in general are horrible to tune but I've got them to a place I'm happy, I build bikes for fun, not for a race track. Have a great day and thank you for the tips all the same
Nice one man, love the machining! The filter however, yeah that vacumm cleaner stuff will fall apart real quickly, it's brittle and bits will get sucked in to the engine, highly recommend using something else!
Yes i did think about that so wen i pull them back off I will replace with something more suitable
Yeah maybe reserve some more room between the screens and put a part of the "normal"open filters in between, with the folds in it, would also create less resistance, more airflow.@@CafeRacerGarage
I always wanted to make some myself. Perhaps after watching the video, it's the time for it. How did you build the form for the press?
At the very beginning of this video you can see me making the form die, Go for it mate its a fun project 👍
Lovely
thank you :)
put a mandrel on the inside then clamp on the velocity stack to part off
Hey bud, your problem is trying to grip something so thin walled and soft material like aluminum is even worse, the idea isn't flawed just the execution, next time just turn you a quick little plug to put in the ID of the part so you can chuck on it without it collapsing. It can be made from any scrap, hell even a piece of good solid wood would even work
Coarse screen is actually really restrictive. Like shockingly so. When I made stacks for my XS650 I turned the entire profile and on the OD I shaped the end where I could still run a pod filter. Don't know if it made a power difference, but I never found dirt in the intake tract.
Thats awesome bro thank you for the knowledge
7:52 It's called a Coffee Tamper
I thought so but wasn't sure so thanks for confirming Paul :)
I used to use soap as an Ali annealing indicator - turns black/dark brown and it’s done.
Thats a good idea too, is it just a normal soap bar?
Yes, just wet it to soften it then smear it across the surface - like a deodorant stick :)
Very nice build. But now you have a permanent choke on the bike.
Yep!
Lol, nevermind
U got thos old.anedisd aluminum cups an Mac them out of them thas wetbi did an thea .thea come in different celery u find them at antic soers I thot u lic to no that