Are you interested in selling one of these dynos? Working on building zenoahs for boats, would love to be able to quantify improvements but don't have the access to the equipment to build a dyno. Thanks!
Thank you I did finish it but the drive shaft kept breaking i need to redesign the drive shaft. i have been restoring a car which has taken all my time. 👍
I know this video was a couple years ago. But I had to comment on your incredible skills and ingenuity. I think this is totally awesome. My dyno for Zenoahs is different airplane propellers and a tachometer. Much appreciation for what you’ve done here!!
Kept breaking the drive shaft so i need to redesign it its an easy fix but the vibrations twist the drivesahaft and would glow red hot, so the dyno got pushed aside i will come back to it soon 👍👍
Hi, awesome job! Whats the maximum hp it can hold back? Im thinking of buildone a similar one with a dual sided rotor to increase its capacity (aiming for 100hp maximum)
Thank you man, i am not sure yet it has been on hold but i expect it to hold 20hp, it is all up and running but the drive shaft keeps snapping so i need to redesign that, the vibrations are a problem
@@makeorbreak2798 bugger! Which shaft is breaking? The coupling or the water brake itself? Do you run a clutch on the engibes you are testing or just direct drive?
Actually, do you have the sae paper on calculating the hp it can handle? I purchased it this week, its a bit of a read! But your design might be more efficient than you think. What rpm do these engines get to?
HI, I did something similar a couple of jears ago. My fixture looks different but results is the same. With these pistons I had temperature problems I solved by reducing the upper 5mm diameter of the piston
Awesome these aircooled engines run extremely hot it seems this one hasn’t seized (luckily) and been well over 200c, I normally relieve the top outer diameter as well.
I picked up a CNC router. Just trying to figure out where to start. Did you write your own G-Code to cut these Pistons? Or did you draw it in some kind of a program and then send it to the machine?
Yep i use fusion 360 to draw what i want the piston to look like and then create the tool path, from there you send the code to your control software (i use mach 3) and that controls the router, but first you need to design or copy the holder i that i made, its a lot of mucking around but once done its repeatable.
@@makeorbreak2798 A great piece of work!! A true thing to be proud of! For the pump youre using, you will be faced with two working points. The increasing pressure and the higher volumeflow. Both will end up in a exponential curve and will be tough to regulate. But worth a test!! I would also test a fuelpump with water, delivering high pressure and high volumeflow plus a 3 port valve to keep the pressure constant.
@@GlobalFlyer thank you 🙏 yes i think you are right on with that, I considered a second pump which might be ok and also with a regulator inline to keep the pumps running and at a constant pressure. Thank you
Couldn't you just machine a case to take a sealed bearing instead of all these seals and shit? I've been building a flat six 35cc ngh based motor and it seems like all they do is use sealed bearings and call it good. Am I machining my cases wrong or will a sealed bearing work as well?
Yep you can get sealed bearings and they do work some even come with sealed bearings But they leak more than the rubber seals do, i guess its just personal preference
@@makeorbreak2798 ok thanks, I appreciate you and your channel honestly it's hard for me to find small motor specific info. Will the band seals outlive the motor or is it a maintenance issue I'd be willing to trade a little power for? Thanks either way man you've done a whole lot for the small bore homies for sure
@@Najsnwjsbdn thank you mate I appreciate that, the seals without the tension spring last a long time and will probably last as long as the motor would
Awsome stuff right there, I'm tossing around a roller table/ dyno for my cars but want it to be adjustable in length. But I'm not very tech savvy so I don't know how far the dyno part will go but I will have a run table anyhow. I look forward to some running videos. Will you be porting and modifying so we can get real results of the modifying.
Hey mate thank you I appreciate the kind words, yes i will be porting and modding these check out some of my first videos on the ported 30.5cc, i will dyno these motors stock and ported with various pipes 👍👍
Wow great content man you deserve way more subscribers. I recently bought a zenoah g290rc from ddm and I'm curious if it actually makes 3.5hp. Subscribed.
awesome work sir just awesome, could i please ask you to share what feeds and speeds you have been using with your cnc? i am still feeling out my 3040 cnc and cutting alu is my main goal. Many thanks and i can not wait for part 3
Thank you 🙏 i have the spindle at about 11k rpm with 1000mm/min feedrate, i always run a finishing pass with a 1mm step over and .2mm depth cut the reason for that is I don’t have any chip evacuation at the moment so until i do then it could maybe do a .3 or .4 depth cut. my machine is half way through its upgrade 👍👍
Are willing to share some cad drawing. I'm interested in your design and would modify and enlarge to work with 4 stroke Briggs and Stratton Engines around 10-15 hp. thanks for your video and great work on your design... :)
If you do get one and have trouble with it like i did, let me know and i might be able to help, i went for the non usb version and i use a uc100 to connect via usb, gd luck.
