Part 2 is now online

https://youtu.be/SSTqeR4HRB4

Derk

Excellent!!!

Looking forward to the 3rd video.

Jeff

thanks for your reply, the 3rd episode is online now.
https://www.youtube.com/watch?v=hSgQOYxzZoI&feature=youtu.be

Regards, Derk

This looks great! Thanks for posting.

Derk

What stepper motor, controller and voltage are you using?

Jeff

Hello Jeff,

For the hydraulic valve i used a   

Nema34 Stepper Motor 34HS1450D12.7L34J5-5 Single KEY WAY Shaft 8N.M 4leads 5A 114mm motor length
DM880H Driver for Nema34
 350W-60V Power
bought on Ebay

Regards,

Derk

Regards, Derk

Good job! Did you find a good repeatability of the tests?

In my setup repeatability now it isn't good, between two tests I see 0.6hp of difference. To improve the repeatability I'm working to position of oil hoses. What kind of oil hoses are you using? 

Posted by: eric91

Good job! Did you find a good repeatability of the tests?

In my setup repeatability now it isn't good, between two tests I see 0.6hp of difference. To improve the repeatability I'm working to position of oil hoses. What kind of oil hoses are you using? 

Hose material internal: NBR
Hose material external: SBR
Hose type: HST-13 -2SN
Pillar A: Swivel (M22 x 1.5)
Pillar B: Swivel (M22 x 1.5)
Item type:
Complete hydraulic hose
Length (mm): 1,000
Max. working pressure (bar): 275
Standard: EN 853-2SN
Series: 15L
Temperature range (° C): - 40 / +100
Type approval: ABS / BV / DNN / KOMAG / GL / NKK / RINA
Working pressure max. (Bar): 275

Regards,

Derk

Dear members,

Today I received the Murata Shock Sensor Board, the first tests on a 12v electric motor seem satisfying. At the end of this week I will post this and report on Youtube.

If everything goes well, we will do the first test on Sunday, November 18th, this also comes with a complete report from Youtube.


Greetings,


Derk

Posted by: Holstein

Dear members,

Today I received the Murata Shock Sensor Board, the first tests on a 12v electric motor seem satisfying. At the end of this week I will post this and report on Youtube.

If everything goes well, we will do the first test on Sunday, November 18th, this also comes with a complete report from Youtube.


Greetings,

Derk

Now online

https://youtu.be/z1zWK-Tjx9s

Hi Derk 

Can you post some pics of your flow valve setup.. I've tryed everything to get mine to work and it's useless. 

I used nema 17 with 3.7/1 to overcome the valve stiffness when under high pressure and it still wasn't strong enough to turn the valve. I then went to 100/1 in the stepper but the dyno softwhere hasn't enough steps to controle it and is way to slow. 

I'm getting somewhat frustrated with it as everything works on my dyno apart from the flow controle side witch is really anoying.

Hello,

Of course I want to put photos on the forum, but you do not have much of a photo. Tell me more about your project, maybe I can help you better. I think a Nema 17 is simply too small to operate a hydraulic valve.

Hello everyone,
Part 4 is online now!
The run we did was good, unfortunately we did not test the engine, we got an electronic fault just before the start. We have tested a few times manually, but the problems only got bigger. I have made a new control, of which I show the design in a following video.

I hope you have fun with watching Part 4
https://youtu.be/MRRKy3ncGSA

Derk

Looking good, always some bugs to work out.

Did you use the stepper motor to control the hydraulic valve?

I am curious if it has enough torque to run the valve correctly?

Jeff