You mean these ones?
The screwhole is threaded? And that’s a nut, that I marked in yellow, to jam the screw?
If that’s not enough, how about drilling the screw for a cotter pin that you bend so that it locks the screw? Get a longer pin, so you can twist it all around the screw.
Also, who did the grinding of the clevis, where I marked in blue? I’d be careful not to get a sharp corner in the material.
Agreed. It will be cleaned up today when I finish the cyclic and start the pedals. I did think of the cotter pin idea but the two jam nuts allow for easy adjustment. A cotter pin, less so. Yes, the hole is threaded.
Ok.
But will you be doing a lot of adjusting on these stops? Once they are set where you want them, drill a hole and secure with a pin? When the day comes when you need to change control cables, just use a new screw for the new setup?
The screw will be quite secure with just one nut, jamming it against the hole threads. Plus. The cyclics are interconnected (or will be)? Both sticks have these stops…
What I’m trying to say is that you could be creating a problem by cutting into the clevis, to solve another problem…
But, yeah, you’re going to fly that thing and you probably have feedback from real builders, not armchair builders like me 
What is missing from the photo is the rod connecting the two sticks. I had it off to make adjustments. You are definitely not wrong Troll. And RotorX is NOT Vans. It’s pretty much radio silence in this community. I am not saying that they are not helpful. Only that the community isn’t very public. So a lot of this is “roll yer own” sort of stuff. I agree with you regarding the clevis. Fortunately it is way overbuilt. But, as it is aluminum, it will crack if mistreated. I am not throwing out the cotter idea completely. It’s just that I would prefer some flexibility during rigging. Anyway, I would take your advice over most other armchair builders I know. Your mechanical knowledge is way past mine so please keep it coming. The life you save may be your own!
Well @Troll, your keen engineering knowledge has served me well. Turns out that the clevis didn’t permit the required 52° lateral cyclic travel with the bottom jam nut wound even all the way back to the head of the bolt. So I was stuck. I’ve ditched both nuts and the result is pretty damn acceptable. The clevis is a preflight item anyway so wear and tear over time will be easily caught. And anyway, in the unlikely event that the bolt works its way out, I will get 3-5 degrees of extra cyclic travel which isn’t enough to stretch or stress the cable.
Or less, while it is unscrewing itself.
But with a cotter pin, bent snugly, it won’t. And if you’re checking the clevis at preflight, just remember to have a look at the pins too.
Your clevis must be different from mine. I had room for the jam nuts with some adjustment to spare??
It’s the same clevis. For comfort I angled the grip relative to the longitudinal axis and used the curve in the stick slightly differently than per the plans. The goal being to have the stick 3° passenger side of vertical to give slightly more room when the collective is raised. I am 6’5” so I have to make some allowances for my my own stupid geometry or flying this thing is going to be very uncomfortable. Anyway, canting the stick 3° made the nut/jam-nut combo force a full displacement that is less than 52°. Ditching the jam-nut and using a cotter pin gave me the wiggle room I needed.
oh, real joysticks! 
keep up the good work guys 
The collective is done (except for safety wire and riveting).
This was actually fun. Way more fun than the cyclic. Still, it took me way more time than it should have. I’d guess that I put at least 20 hours into it. I now think that a homemade PC collective would be quite easy to make if one knows how to do the sensors and software.
On to the rudder anti-torque…
.6cm raw aluminum. Not quite @Troll quality but my craftsmanship is improving.
Or what we metrics like to call; 6mm
Eh… You’re still talking about me, when you mention this Troll character, right?
Because I can’t remember making alu look better than that. 
Yeah I new that would get me in trouble. But I was afraid that mentioning mm would make the effort sound less impressive. Just know that I was trying to be helpful. EVERYTHING on this helicopter is English. I hate it. At least 20 times a day I am pinching bolts, bits and letter bits with calipers and converting the resulting inch-decimal to fractions. One could completely overshoot Mars with this bulls*** math.
Hey, at least it is not a Landrover.
I remember the Series 2 we had when I was a kid, a mixture of AF and Whitworth nuts and bolts!
I scratch my head wondering why the US has not converted to metric. Was a great opportunity lost, most likely politicized.
I’ll expound tomorrow when I have time. Short version, if you grow up using it (ie start as a welder at 17) you learn how to work with it pretty intuitively. We handle a system just as wonky with years, months, weeks, etc with our any issues pretty much globally.
What about trigonometry, and 60 arc minutes to a degree, milliradians, arc seconds, etc? For the programers, octal and hexadecimal. There are dozens of fields of science that use odd bases and non-intuitive divisions, if you grow up learning them they are completely natural.
Base ten has its advantages for certain things, while base 12 (ie imperial measurements when talking construction in feet and inches) has it’s advantages for certain things. If you grew up doing construction, layout, etc in the US using imperial, it can be very fast using fractions compared to doing 5-6 decimal places with a decimalized system (both Imperial or metric).
They tried to force the metric system at us during my teens and getting around 200 million adults to convert to that screwy European form of measurement was NEVER going to happen. On a national scale the cost of converting everything was also quite cost prohibitive.
Having already failed to convert to metric once already, and quite miserably, I suspect any new pushes to change will be just as unsuccessful.
Wheels
I’ll say that while I agree with both posts above, I do enjoy the metric system and use it for every personal project I possibly can.
Working on import cars most of my formative years probably helped.
I am 66 years old, so grew up with SAE measurement. But almost everything mechanical that I grew to enjoy, cars, motorcycles, bicycles, drones, cameras, and fishing reels are all metric. The two exceptions are airplanes and electric skateboards. And I don’t own an airplane. I’ve lived 13 years of my life in Europe, so feel qualified to have a personal view on the matter. Probably a big part of my aggravation is having to own tools in both systems, which TBH, is probably seen as a benefit by some 
. I’m not going to win this argument, so will continue to own both. Begrudgingly.
I really have no bias over what measuring system is utilized since I worked as a machinist for over 30 years so for me metric, inch, etc. are just numbers that can be easily converted to whichever system is called for on the blueprint.
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