Uuuuaaaah..! I have started building now..!

[loubial]

 

c",)

 

 

I am stunned by your creativity!

 

On this picture, we can see two parts long and black near the rotary axe. Are they skock absorber (damper) pneumatique actuator ? ....... What are the fonction of that ?

[aaron886]

I was considering shock absorbers for a center-stick joystick project, but decided against because of what I assume would be a non-newtonian reaction to pressure. However, they would provide very strong resistance without a lot of constant strain to connected parts.

 

I would like to know how well they do the job!

 

Great stuff with the trimmer, dude, I bow to your mechanical prowess. :D

[Triggerhappy69]

I am stunned by your creativity!

 

On this picture, we can see two parts long and black near the rotary axe. Are they skock absorber (damper) pneumatique actuator ? ....... What are the fonction of that ?

 

They are oil dampers from one of those huge RC offroad cars that I bought a bunch of on ebay..

 

It is just a way to simulate the "hydraulic feeling" that real life helicopters of this size have when you push the pedal in...?

 

However I need to double the number of dampers or get some bigger ones.

 

Without them it all feels a bit to mechanical compared to the real thing. to much "metal on metal" friction, and not enough of the constant resistance that a hydrailic system give you.

[Triggerhappy69]

I was considering shock absorbers for a center-stick joystick project, but decided against because of what I assume would be a non-newtonian reaction to pressure. However, they would provide very strong resistance without a lot of constant strain to connected parts.

 

I would like to know how well they do the job!

 

Great stuff with the trimmer, dude, I bow to your mechanical prowess. :D

 

 

Hmm... By "non-newtonian" you mean a fluids ability to solidify when preassure is applied to it?

This only occures in a small number of spesific fluids as far as I know (bitumen and corn-starch being the most common ones).

 

I guessed a hydraulic damper with the coil spring removed, if it's not to big, would mimic the feel of a hydrailic system. But I see your point if the damper size is increased..?

 

Am I way of here?

[Scudslaker]

hehe, great intelctual work you ve done so far,..as told twice,..i enjoy following your pit progress..

 

on my side, we moved to our new flat last week,..and still things to tidy!)

so i am looking forward to get my tools used on my own pit progress..

 

keep your progress running !)

[Kevlon]

Holy mother of all cows man ;) your doing a great job! :)

 

Alt bra med deg ? Det er en stund siden jeg har hatt noen kontakt med deg, eller noen på dette forumuet eller 504 i det hele tatt.

Hvordan går det med gutta forresten? har du noen kontakt med de?

Ville bare si drit bra jobba man!

noen sjangs for å se noen helhets bilder av pitten?

(sorry for Norwegian everybody)

[loubial]

I have realise a benchmark about different hydraulic solution damper :

-classical damper (mini bike steering damper... whith mofifyind the fluid and size off hole inside)

- Rotary dashpot

- Vane dashpot

I relate this bench on a post on checksix forum (in french...)

You can read the benchmark on the link below (with google translate...)

Edited May 27, 2010 by loubial

[Triggerhappy69]

Just quickly adding some pics of the new Ejection Seat under development..

 

My first one gave me such a pain in my A** that I had to do something. So this time I thought I'd gp all the way and make it as correct (and confortable) as possible..!

 

 

 

[Triggerhappy69]

Holy mother of all cows man ;) your doing a great job! :)

 

Alt bra med deg ? Det er en stund siden jeg har hatt noen kontakt med deg, eller noen på dette forumuet eller 504 i det hele tatt.

Hvordan går det med gutta forresten? har du noen kontakt med de?

Ville bare si drit bra jobba man!

noen sjangs for å se noen helhets bilder av pitten?

(sorry for Norwegian everybody)

 

 

Hallais Kevlon..! Kult å se deg her på forumet da..! Har du flytta hjem igjen til Norge eller?

 

Jeg har ikke satt pitten sammen igjen etter flyttingen, men det er bare ett par uker til det skjer.. Du kan godt få bilder, men de får du ikke lov å dele med noen enda. hihi..

 

Ta deg en tur over hvis du er i Norge. Så kan vi spinne opp min cockpit, og/eller leke i 737NG simmen vi har bygget på flymuseet på sola. for DEN er ferdig.. Og jeg har tilgang til den når det passer..

[Scudslaker]

what?)

[Triggerhappy69]

what?)

 

 

HeHe.. You of all should understand Norwegian Scud..! It is after all a germanic language..:smartass:

[Scudslaker]

hehe, on my side, too,..i don t care if i understand all..maybe some spelling is nearly the same like in german but not complete,..anyway..impressing work master triggerhappy, really impressive

[Triggerhappy69]

Thanx scud..! c",)

 

Today I finished the parts needed to assemble the cyclic and pedal trim force mechanics (finally).

 

There is just one thing I find so damn frustrating.. The Solenoids..!

I have ordered at least three different sets of solenoids now. And for some idiotic reason I seem to end up with 24V solenoids as strong as you might need to pull back a hamsters foreskin..

... If someone out there have an idea of what spesific to look for when I order three more, please please PLEASE speak up..!

 

Or even better.. If you by chance are sitting on three 12v or 24v that might do the job. I'll gladly buy them from you..!?

... before I go completely mental and start electricuting myself...

[CyBerkut]

Well Trigger, to start with, let's separate the concepts of solenoids and foreskin manipulation, in the interests of safety! ;)

 

What you may wish to examine doing, is using 120 Volt solenoids, and using relays (triggered by your lower voltage) to operate them.

 

Good luck, and be careful!

[Avilator]

And for some idiotic reason I seem to end up with 24V solenoids as strong as you might need to pull back a hamsters foreskin.

Ummmm................This is the best analogy you could come up with?:huh:

All right then...............

I'll just carry on, nothing to see here....:music_whistling:

[Triggerhappy69]

Ummmm................This is the best analogy you could come up with?:huh:

All right then...............

I'll just carry on, nothing to see here....:music_whistling:

 

 

Ha Ha..! I have to give you that one man..! Not one of my best analogys.! :lol:

 

.. I'll keep workingh on it though..:cry:

 

I've started working on the ejection seat drawing. The seat back to be precise..

The height of the seat from the floor, with the seat padding, will be just a bit under 30cm. But how high should the back be (measured from the top of the seat to the slots where the seat-belts come out?

Any ideas

[Kevlon]

Hallais Kevlon..! Kult å se deg her på forumet da..! Har du flytta hjem igjen til Norge eller?

 

Jeg har ikke satt pitten sammen igjen etter flyttingen, men det er bare ett par uker til det skjer.. Du kan godt få bilder, men de får du ikke lov å dele med noen enda. hihi..

 

Ta deg en tur over hvis du er i Norge. Så kan vi spinne opp min cockpit, og/eller leke i 737NG simmen vi har bygget på flymuseet på sola. for DEN er ferdig.. Og jeg har tilgang til den når det passer..

 

Er hjemme i Norge nå iløpet av sommeren, tjene litt penger vettu, for er jo evig student. hehe.

 

Bor og studerer i London for tiden så er ikke så mye hjemme i Norge, men jeg kommer nok til å ta den pakka der man når jeg får tid ;)

Hvor har du flyttet ?

[Triggerhappy69]

Kevlon. I'll continue this conversation in english since we have a limited number of Norwegian speaking guys here.. Hehe.

 

Where in London do you live? We just sold our house in Portebello Road a couple of months ago. No one was using it since "my old man, the engineer" decided to move to Abu Dhabi, and my little sister finished her play in London.

I really like London.. It's such a diverse city, and it has THE very best movie theater in THE WORLD..! A small cinema called "the electric cinema" smack in the middle of Portebello road where you are seated in reclined leather seats, with a pillow to put your feet up on. And they serve drinks in the bar before and during the movie.. M-m-M..! (naturally the last row consist of seats that are twice as wide as the others for making out in..!)

 

I moved to Stavanger now.. So just come on over mate..!

[Krebs20]

I think im sitting on about 3k Selenoids at work right now. Ill take a look at the specs and post them for you later. Best part is that i can get them for next to nothing. Work figures they might as well charge its employees next to nothing, or they will just take it.

 

http://www.grainger.com/Grainger/items/6C017 I think this it it.

Edited June 21, 2010 by Krebs20

[Avilator]

I think im sitting on about 3k Selenoids at work right now. Ill take a look at the specs and post them for you later. Best part is that i can get them for next to nothing. Work figures they might as well charge its employees next to nothing, or they will just take it.

 

http://www.grainger.com/Grainger/items/6C017 I think this it it.

You work at grainger?!?!?!?

*DROOL*:D

[CyBerkut]

100 Amps? Yowza! (that's 1.2 KW of power, by my calculation)

 

Trigger, I think you can move up from hamsters to elephants (maybe even angry elephants) with that solenoid... :music_whistling:

[Krebs20]

We no longer use them for production. I can still get some from the obsolete area. But is it something that would be useable? I don't work for grainger. But my company orders a lot of parts from them.

 

 

Why do you need a selenoid? Won't a switch or relay work?

Edited June 22, 2010 by Krebs20

[Avilator]

Darn, you had me real excited for a minute there!:D

[Triggerhappy69]

We no longer use them for production. I can still get some from the obsolete area. But is it something that would be useable? I don't work for grainger. But my company orders a lot of parts from them.

 

 

Why do you need a selenoid? Won't a switch or relay work?

 

 

This is exactly what I've been looking for..!:thumbup:

... how can I get my hands on four of those?

[Krebs20]

I can get you them for 30 dollars each. Not much cheaper then grainger. You have a few options.

 

http://www.pexsupply.com/White-Rodgers-120-105711-Solenoid-w-Continuous-Duty-16-Ohms-Coil-Resistance-12-VDC-Isolated-Coil

17 dollars is better than anything I can come close to.

Is the cheapest of that type I found on a brief search in Google. Type. Selenoid white-rodgers

 

And you will find alot more from the same brand. My company uses them for hydraulics on heavy equipment. They are fairly tough and used in industrial equipment.

Edited June 24, 2010 by Krebs20
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