Difficulties with one SCN6

Good morning

I am installing SimTools on my 2DOD simulator (on which I was previously using another software...) equipped with 4 SCN6.

Good news : three of the four worked perfectly well at the first attempt (packet rate 2 ms) !
Bad news : one refuses to work even though it works like a clock with the old software varying packet rate up to 50 ms)

I am attaching a dump of the comports conversations :
1.- dump of a SCN6 on port 6 which works well with SimTools
2.- dump of the SCN6 on port 7which refuses to work with SimTools
3.- dump of the SCN6 on port 6 with the other software
4.- dump of the SCN6 on port 7 with the other software ; it would seem that that software makes several attempts in the case of this very cylinder, varying some parameters before it succeeds in handshaking...

Are there any parameters other than packet rate which I could try to change ?

Thanks in advance for your help, I am totally stuck....

Hi mereni

Sorry cant help but have two question.

Which scn6 do you use?
Can you show us a photo of your rig?

I have build a seatmover with scn5. Its fantastic, but it take a lot of space.
Now i try to make somthing like d-box style.
So i think the scn6 is the right way to go...

Is the ID on the SCN6 that doesn't work the same as the one that does? If not change it to the the same ID as the one that does work. Simtools requires all SCN devices use the same ID which I believe is the default ID or the first one you can use.

ps Also each SCN needs its own comport adapter.

I had the same problem with the snc5 (3 rd) used for reare traction loss. ID should be 1 instead of 0 . You can change it via utility software from mirai or use xsim on that actuator and change ID to 1 (that is what i did). Hope it helps . Good Luck

Hi Logic !

For the time being, I use 4 x SCN6-050-150AB (I will purchase another 2 for the next DOF - surge -)

As you will see from the attached photos, my "rig" is indeed more of an offshore oil rig than of a "D-Box " !!! (I even had to dig the ground under to fit it in !)

I designed it with mainly flight simulation in mind, where you need sustained g's, and it goes +/- 45° pitch and bank.

I also do a lot of driving, but in that case, it is quite fidgety (I think it lacks dampers, and the amplitudes are excessive for that purpose), but still a lot of fun - all the youngsters love it, and all the grown-ups (except me !) get sick...









(old and bad) video of "car" mode when there was only one DOF :



(not much better) video of "helicopter mode :



The principles for the fist 2 DOFs :



I obviously stole a lot of inspiration from Thanos...

Reply to BlazinH and abs :

Guys, I really am impressed! Your diag is spot on. Three of the SCNs have an ID of 0 (zero), whilst the fourth one (the one which refuses to answer) has and ID of 2 !

I'll change that to zero tomorrow morning and keep you posted.

Now that is a big joy rider, allot of mass in motion on those chain drives. Have you been able to tame it?

Hi BlazinH : changed this morning the ID of the faulty cylinder to Zero (same as the other three) : now works perfectly, thanks a lot for your help ! Message is loud and clear : all IDs have to be identical.

Hi abs

See my answer to BlazinH : I have just changed the ID of the faulty cylinder to the same value than the other 3 : now works perfectly. It would appear that the important thing is that all IDs be identical, the actual value being possibly less important (zero has worked in my case ; I have not had the courage to test other values; this would have meant changing the IDs of the cylinders that worked, but, as the saying goes, if it ain't broken, don't fix it).

Thanks for your help !

Taming is really the right word ; weight (without pilot) is in the range of 180 kg. Everything being reasonably well balanced around the CoG (although I do not always fully control the weight of some of my apprentice pilots...), and with such "powerful" (!) cylinders, slow movements are quite OK, which is fine for "commercial" flying. But when it comes to more aggressive flying, or to race driving, the momentums at play are such that the animal becomes quite fidgety, and starts bouncing back and forth like a mad bull at a rodeo. Not realistic, I admit, but a lot of fun !

Weight, lever arm, and inertias have been my concerns since the very beginning, and I have spent 30% of my time drilling big holes here and there (plus 20% of my time redoing the parts which had broken down because of excessive drilling - typical full fledged trial and error process - ).

As a result, the skeleton is "marginally rigid" (not to say "elastic"), which makes the bouncing pb even worse. If I could have afforded the budget and logistics of hydraulics, I would have carved all this out of a block of stainless steel in lieu some improbable assembly of aluminium tubing and wire mesh worthy of the Wright brothers... But the management of all the incompatible trade-offs is also a great part of the fun, is not it (time, money, skills, space, tooling, etc.) ?

Hello Mereni thanks for the coins

Could not agree more, Less weight is certainly the mantra for my second sim, its like the old saying for designing/Modding a race car - 'more power gives you gains down the straight, but less weight gives you gains everywhere on the track'. Less inertia = more performance. Have you thought of replacing/modding the chain drives, as in the video there seems to be allot of 'slack'?

Hi mereni

Thanks for sharing your photos and movies.
Wow, your rig is awesome !!!