Originally posted this in my build thread, but it makes more sense to put it out on it's own.
My thoughts on the drop in JLF mod products available since I like tweaking stuff and have tried a wide variety.
Silencing the joystick
The sound of the switches in the JLFs were driving me nuts, so I went with SparkCE optical sensors from
godlike controlsOverall, I'm very happy with them although I've spent a lot of time tweaking. Having to run power to your joysticks is kind of annoying, but it's just one more wire (among many) from the Key-Wiz to the joystick.
The one major problem that I've had with them is the power connector losing its connection. Not sure if the female connector in the clip is not formed correctly or what. I'll probably end up soldering the power wire directly to the PCB.
You will definitely want to switch to a stronger spring if doing this mod. The missing resistance of the switches was much more noticeable that I expected. The big plus to the SparkCE is adjustability and sound level. the joystick does still make noise when the actuator bangs against a direction.
Not sure if I would go this route again or go the simpler route of using the "silent" Omron D2RV-G switches which run around $10 each.
When I tried using standard switches with octagon restrictors, something would catch inside the stick. It would feel like the lip of the actuator was catching on something. They were fine with the original restrictor. I haven't tested the Omron switches, so can't comment on how quiet they are, but they are the only other option I'd consider. I tried "quiet" zippy switches, but they were still pretty clicky.
Video comparison of SparkCE vs original switches below.
Springs
I tried Seimitsu LS-56 springs and 3, 4, 6, & 9lb springs from
paradisearcadeshopThe LS-56 springs weren't really much heavier than the original Sanwa ones. A little bit, but just barely noticeable.
The 9lb springs are crazy heavy. It reminded me of an old pacman joystick with a dried out centering grommet.
If you want a spring that heavy, you shouldn't be using a JLF to begin with.
The 6lb springs feel about like a Happ comp or IL eurostick; standard 90's fighter and beat 'em up style.
I really liked playing the fighters with these springs (at least for short periods of time), but they ruined my shmup game.
The added force required to change direction slowed me down a bit and my ship go boom.
I have the 3lb ones in there now. They are probably a little light for those used to American sticks. I'm also using these with optical switches, which makes them feel lighter than when using them with microswitches.
Focus attack specializes in the fight stick market and sells only the 2lb spring, so I'm guessing that one is considered optimum by the Japanese controls fighter crowd.
With the heavier springs, I've found that the joystick has a "notchy" feeling where it has a certain amount of play with low resistance when centered, but feels like it needs to get up over a hump before the joystick moves any further.
The solution is to lubricate the crap out of everything in the joystick.Actuators
I tried
.5mm and
1mm oversized actuators from paradisearcadeshop.
I was surprised that they did not reduce the throw of the joystick whatsoever. This was the main reason I thought they might be useful.
The battery was dead in my angle finder, so I don't have actual measurements, but was able to tighten it down and compare whether the joystick could tilt less than with the stock actuator (it didn't).
On the +1mm model, the diameter of the side that rides the restrictor plate was actually .4mm smaller than the original.
EDIT: See Armi's comments below and the paradisearcadeshop wiki here:
http://support.paradisearcadeshop.net/doku.php?id=actuators_explainedWhen it came to activating switches, they performed as advertised and did activate the switches sooner.
(which makes no difference to my as the sensitivity of my optical switches is adjustable)
I wouldn't recommend the 1mm model. I tested it with the original JLF switches and it touches all the switches while at rest. That's fine, but the switches wouldn't always disengage when the joystick returned to center. IMO, it's just too big.
Circular Restrictors
I compared the GT-C restrictor from godlikecontrols (blue) and GT-O from paradisearcadeshop (clear)
Because the actuator rides the restrictor at an angle, the inside of the restrictors is slightly cone shaped.
I measured both sides to see if one restrictor would have less throw than the other.
Much to my surprise, the small side was the same on both, but the large side was smaller on the GT-O.
So one of these wasn't going to have the proper angle....
The actuator rides the GT-C from godlikecontrols rides correctly.
The side of the actuator stays flat against the inside of the restrictor top to bottom.
With the GT-O from paradisearcadeshop, the actuator only makes contact with the very edge of the large (outside) side.
I would think this would either cause the actuator or the restrictor to wear prematurely.

This was tested on a brand new, unmodified JLF.
The GT-C from godlikecontrols is definitely be my choice here.
Some people have had an issue with a crack developing on the GT-C.
To prevent this, when inserting them into the restrictor plate, only turn to the first notch.
Do not rotate it all the way to the second (last) notch.
I've also used the GT-Y Octagon restrictor.
I liked it as a training tool. You know whether you're hitting a direction clean or just hitting the general direction then sliding into the proper spot. I was also surprised how it improved my Qbert play.
Eventually though, I wanted my circular motions to feel like circular motions intead of a ride down a bumpy road, so I moved on to the round ones. The only place I know of still selling the GT-Y is
focusattack. Paradise offers an octagon restrictor and focusattack resells it, but given the issue with the circular restrictor, I'd rather stick with the GT-Y.
Ball Top, Bat Top
Sanwa Bat-Tops felt undersized to me. They are ok if you want a bat-top. Just don't expect it to feel like a Happ or IL.
The top is smaller and the JLF shaft is shorter, so it feels like a mini-Happ.

I love the Hand Candy ball tops from
groovygamegearSo much so, that from now on I won't buy a joystick unless it's compatible. I don't really know what to say. They are just so smooth that it's noticeable.
Mounting PlateI'm using the Sanwa JLF-P1-S Mounting Plate, commonly referred to as the "S-plate"

Not sure I'd go this route again, it only nets you about a 1/4". In my temporary CP top which is 1/2"MDF, the half inch screws used in the two lone mounting points have pulled out. I plan to drill new mounting holes on the corners and use 4 bolts in the final build.
I actually prefer these adapters that I made for a different build.
Button SilencersHere I tried the Little Kahuna Seimitsu Silent Button Pad from paradisearcadeshop and the Silencer Sanwa/Seimitsu 30mm Foam Washer from focusattack.

The Little Kahuna sits between the button plunger and insert. As far as I can tell, it accomplishes nothing (on Seimitsu buttons anyway).
The tabs that hold the button in still bottom out out and still make noise. I could tell no difference in sound. In fact, I had two identical buttons out and lost track of which one had it inserted. Perhaps with a Sanwa button which is made differently, it would have accomplished something.
The Silencer from focusattack has tabs to cushion the impact of the tabs that hold the button in the shell.

These reduced the sound somewhat and changed the feel of the buttons a lot. Seimitsu buttons don't have much travel to begin with, so adding .8 or .9mm of padding reduces the travel by a noticeable amount. (1/3-1/2 IMO, but I didn't measure it)
The sound of the buttons isn't as sharp, but it's far from silent.
While testing, I noticed that my ship wasn't firing as often as it should be. So off to notepad for some testing.
The pad actually reduces the travel to the point that the button feels bottomed out just as the switch is activated.
If the main button I had been using to fire was lightly pressed, the switch wouldn't even activate. However, the other switches seemed to be fine. I swapped out silencer pads and the button worked as it should. Looking at the pad that was removed, one end appeared slightly thicker than it should be.
So if you're going to order these, order extra in case some aren't within spec.I'm undecided whether I'm leaving them in or not. The lack of travel and bottoming out bothers me a little bit due to the reduced tactile feedback. It's not quite like using virtual buttons on a touchscreen, but it's halfway there.
I think I'll probably end up adjusting and liking them.
Comparison between Silencers from focusattack and stock buttons in video below. (still processing at youtube as this is posted)
EDIT: After playing with the silencer pads installed for a while, I've decide to remove them. They just change the feel of the button too much for my taste.
Not being able to feel the button bottom out messes with my head and makes me feel uncertain about whether I've applied enough pressure.