Thanks for that. I've always wondered how you got on with your neighbors, although they do seem to be a decent distance away at least... I don't have a dyno, nor have I ever used one, but even I know you use it for changes.
Thanks for the video. I bought a very old motorcycle inertia dyno 2 years back. After a lot of research I too opted to go with the Your Dyno. After watching your video i need to make it a priority to get it built.
Pretty slick setup! I have to shout out the "alpha" usb wifi dongle, those things were the bees knees back in the war driving hayday... er, I mean... for getting wifi long distance.... yeah.... that's it.
Thanks for sharing! I've got an old ASM97 and YourDyno as well. It's torn down for cleanup and paint but I'll soon be using it for part throttle tuning. I see you replaced the KBMM eddy power supply with a MT2DC-1-220V55A rectifier. I was planning to get the sparkfun isolator and adding a RC filter but your solution simplifies things. 👍 Can you share your source for the new pulley?
No Problem. The belt pitch is 8M. My pullies are 85mm wide. Measure yours because some ASM97's had thinner belts (55mm if I remember right). Here is an example pulley that I used. www.zoro.com/continental-sprkt-80-teeth-8m-pitch-85m-wide-p80-8m-85-e/i/G2216322/ I was able to get it on ebay for cheap ~80 bucks if I remember right. You will also need the QD hub to fit your shaft along with a new belt length.
I don't own a dyno but I want yours. In fact I need two of yours because I need to tune my AWD car. I don't live in a state where these existed though I don't think.
Thanks for posting this video I love backyard engineering stuff ! I I have a old ASM 240 MD500 mustang dyno I am trying t0 bring back life it used ISA boards in the old PC but I am trying to upgrade it PCI using A NI 6221 data AQ 37 pin board and Im in need of a wiring harness for PC do you have this by chance being your using MY Dyno stuff let me know ill nuy it thanks great video !!
Also I know you changed your timing belt sprocket for the flywheel to a larger one to get 1:1 from the rollers to the flywheel. But would it be possible/beneficial to move one of the large sprockets up to the flywheel and move the small one to the rollers and get one more smaller sprocket on the other roller? It'd reduce the eddy brake capacity, but it'd probably increase the time it'd take for the flywheel to spin up?
If I did that, we would see really high roller speeds and really low flywheel speeds. If I remember right the roller bearings were the limiting factor I dont think you want them spinning more than 130mph or so. The 1:1 ratio works out well because the safe flywheel speed almost matches the max roller speed I'm comfortable with, maximizing the available inertial.
See if this link works for you. m.aliexpress.us/item/2251832737830030.html?spm=a2g0n.order_detail.order_detail_item.3.7b3ff19cbzImUD&gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US
Atleast you aren't breathing in carbon monoxide with it being outdoors.. yes I know professional facilities have exhaust ventilation fans, but even then, you're still going to get some exposure depending on how good ventilation is. Edit* I like the double rollers.. Makes it atleast mentally more reassuring the vehicle stays where it needs beyond the ratchet tie downs.
So what's the most power you've recorded on your setup? I heard you mention ~400hp, is there something preventing it from recording higher inertia based runs?
Ive had closer to 500hp pulls on it. The issue is with the inertia this dyno offers, the pull is very quick at higher power levels. This results in less data points per pull, and on turbo cars sometimes less load.I find around 400/400whp/wtq I get a long enough pull to tune precisely. Anything less than that is even better
Hey man, I am a college student on a formula SAE team and I’ve been tasked to build a dyno system for our car this year so we can finally begin tuning. This setup looks awesome! Where do you think I should start as far as trying to replicate something? Scour marketplace for a similar emissions dyno? Consistency is all we’re after, not accuracy.
Find a good industrial fabricator, the base unit would be less than 5k likely and I'm sure if you're in a good engineering school they have funds for a student managed project of this magnitude
Yes, to a point. The dual rollers don't provide too much grip and the belt also has its limitations. But I think 550whp or so could be reliably measured.
Its a pretty old little IBM in there. It doesn't take much computing power to run this dyno. I dont remember the specs but anything made it the last 10 years I would think is sufficient.
@@spankranchgarage so besides the roller what all do I need too do my own dyno I have a 700hpf150 just trying too see what software and all that u have for it too work right
@@spankranchgarage I also have a little Silverado with a cam I'm trying too build a at home dyno like your that's why I'm asking for your help on how too build one
@@luisbazaldua7345 I recommend you get the "your dyno" box along with their native software from yourdyno.com/ For 700hp you will need a big roller, and even better with be a big roller with an eddy brake
@@spankranchgarage so on there it's asking me too choose brakes Dyno or not I know it has the Eddy brake and the other says can bus what's that one give me the option for yes or no
![DIY Hub Dyno: Introduction [1]](http://i.ytimg.com/vi/_O0IQ4RY5pc/mqdefault.jpg)
![DIY Hub Dyno: Introduction [1]](/img/tr.png)
It wouldn’t be Spank Ranch Garage without the backyard dyno 🤠
Doesn't matter how accurate it is in HP/TQ just as long as it is consistent. Great tuning tool!
Thats absolutely right.
If read is consistent, you can go pay a visit to calibrated dyno to have a scale on how off your is
Love the setup! Great job reusing the old rollers and making a solid tool!
Some how this came up on my feed.
Awesome work! This is so cool. Ill have to check out your other videos
Thanks for watching!
Very interesting video!
Thanks for that. I've always wondered how you got on with your neighbors, although they do seem to be a decent distance away at least...
I don't have a dyno, nor have I ever used one, but even I know you use it for changes.
I like that a lot !
Thanks for the video. I bought a very old motorcycle inertia dyno 2 years back. After a lot of research I too opted to go with the Your Dyno. After watching your video i need to make it a priority to get it built.
Yourdyno has been a great choice for me and they are developing new features every month still
@@spankranchgarage I want to build one too I’m in the Punxy area could help source the dyno?
@@at_3831 I cant, but keep an eye out on marketplace. Unfortunately these are becoming less and less common as many have hit the scrapyard already.
Was wondering if I can convert emission dyno. Answered a lot of my questions thank you. Want that graph for tuning ignition
It ain’t stupid if if works. Full season of drifting in a car tuned on this very device. 10/10 recommend
Pretty slick setup!
I have to shout out the "alpha" usb wifi dongle, those things were the bees knees back in the war driving hayday... er, I mean... for getting wifi long distance.... yeah.... that's it.
Funny you say that… there’s a reason I own it 😂. Especially good when you turn the mW up
That’s badass
Thanks for sharing! I've got an old ASM97 and YourDyno as well. It's torn down for cleanup and paint but I'll soon be using it for part throttle tuning. I see you replaced the KBMM eddy power supply with a MT2DC-1-220V55A rectifier. I was planning to get the sparkfun isolator and adding a RC filter but your solution simplifies things. 👍
Can you share your source for the new pulley?
No Problem. The belt pitch is 8M. My pullies are 85mm wide. Measure yours because some ASM97's had thinner belts (55mm if I remember right). Here is an example pulley that I used. www.zoro.com/continental-sprkt-80-teeth-8m-pitch-85m-wide-p80-8m-85-e/i/G2216322/
I was able to get it on ebay for cheap ~80 bucks if I remember right.
You will also need the QD hub to fit your shaft along with a new belt length.
I don't own a dyno but I want yours. In fact I need two of yours because I need to tune my AWD car. I don't live in a state where these existed though I don't think.
i really could have used this when i had to reset the monitors on my project car that i couldn't trouble shoot on the road.
Yeah its really helpful for that kind of stuff and troubleshooting
Just keep those bearings running smooth
Thanks for posting this video I love backyard engineering stuff ! I I have a old ASM 240 MD500 mustang dyno I am trying t0 bring back life it used ISA boards in the old PC but I am trying to upgrade it PCI using A NI 6221 data AQ 37 pin board and Im in need of a wiring harness for PC do you have this by chance being your using MY Dyno stuff let me know ill nuy it thanks great video !!
Also I know you changed your timing belt sprocket for the flywheel to a larger one to get 1:1 from the rollers to the flywheel. But would it be possible/beneficial to move one of the large sprockets up to the flywheel and move the small one to the rollers and get one more smaller sprocket on the other roller? It'd reduce the eddy brake capacity, but it'd probably increase the time it'd take for the flywheel to spin up?
If I did that, we would see really high roller speeds and really low flywheel speeds. If I remember right the roller bearings were the limiting factor I dont think you want them spinning more than 130mph or so. The 1:1 ratio works out well because the safe flywheel speed almost matches the max roller speed I'm comfortable with, maximizing the available inertial.
Look nice 👍, what type of eddy current brake power supply you’re using?
See if this link works for you. m.aliexpress.us/item/2251832737830030.html?spm=a2g0n.order_detail.order_detail_item.3.7b3ff19cbzImUD&gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US
Atleast you aren't breathing in carbon monoxide with it being outdoors.. yes I know professional facilities have exhaust ventilation fans, but even then, you're still going to get some exposure depending on how good ventilation is.
Edit* I like the double rollers.. Makes it atleast mentally more reassuring the vehicle stays where it needs beyond the ratchet tie downs.
So what's the most power you've recorded on your setup? I heard you mention ~400hp, is there something preventing it from recording higher inertia based runs?
Ive had closer to 500hp pulls on it. The issue is with the inertia this dyno offers, the pull is very quick at higher power levels. This results in less data points per pull, and on turbo cars sometimes less load.I find around 400/400whp/wtq I get a long enough pull to tune precisely. Anything less than that is even better
Do you think it would be possible to link two for an awd dyno? And maybe use both brakes?
Yes actually. That’s how some of the AWD dynos work. A really long cog belt to the front rollers
Hey man, I am a college student on a formula SAE team and I’ve been tasked to build a dyno system for our car this year so we can finally begin tuning. This setup looks awesome! Where do you think I should start as far as trying to replicate something? Scour marketplace for a similar emissions dyno? Consistency is all we’re after, not accuracy.
Find a good industrial fabricator, the base unit would be less than 5k likely and I'm sure if you're in a good engineering school they have funds for a student managed project of this magnitude
So if you increased the eddy brake strength and/or the roller weight, it'd be usable for higher horsepower applications?
Yes, to a point. The dual rollers don't provide too much grip and the belt also has its limitations. But I think 550whp or so could be reliably measured.
What are tge specs on your PC? I'm tryinv to find the best balance of cost to performance for my Dyno, using a YourDyno controller.
Its a pretty old little IBM in there. It doesn't take much computing power to run this dyno. I dont remember the specs but anything made it the last 10 years I would think is sufficient.
perfectc soy matias argentina
What do u do for a living out of curiosity
Spanks ranch
Half engineer half mechanic
Only numbers that matter are those quartermile times boy!!!
Or a lap around E town!
@@spankranchgarage if that's the case then the only numbers that matter is the coolant temp
Hot garbage. And I still gotta get down there for a date with my truck.🤣 Maybe I can even bring a running Beretta along.
It’s going to get wet
Wahhhhh
How can I contact u bro? I have a lot of questions maybe u can help me out
Chat me on here that way others can learn from it too
@@spankranchgarage so besides the roller what all do I need too do my own dyno I have a 700hpf150 just trying too see what software and all that u have for it too work right
@@spankranchgarage I also have a little Silverado with a cam I'm trying too build a at home dyno like your that's why I'm asking for your help on how too build one
@@luisbazaldua7345 I recommend you get the "your dyno" box along with their native software from yourdyno.com/ For 700hp you will need a big roller, and even better with be a big roller with an eddy brake
@@spankranchgarage so on there it's asking me too choose brakes Dyno or not I know it has the Eddy brake and the other says can bus what's that one give me the option for yes or no