The Sanwa and Seimitsu FAQ


well, looks like I get the task of doing that write up then. :slight_smile: After seeing the mod of the NeoGeo old style home stick with Sanwas, I figured it was POSSIBLE…

I finally broke my CPS Fighter Stick apart and finding that there is more than enough space to fit screw in 24mm sanwas for the buttons and maybe an LS-32 for the stick. I prefer sanwa, so i’m going to try to shoehorn a JLF first


Keep the stock stick, it’s Sanwa anyway.


How do 24mm buttons compare with 30mm buttons? Is there any difference beyond size?


They use the same kind of microswitch so there shouldn’t be any difference in performance.


is it? I’d rather have a JLF in any case.


It’s a Sanwa JLW.


It’s not the JLW that Sanwa’s selling now. When I have a few spare minutes, I’ll take pics… Looks more like a Hori or even seimitsu…


I could take pics too, it’s unmistakably a JLW with Sanwa written on it.


Do you have a Japanese CPS Fighter?




that explains it.

Could you take photos of the internals if you’ve got the time/effort? I want to know how to mount a JLW in this thing and if it’s possible to mount a JLF in it’s stead.

That’s what mine looks like. I can’t find my camera for some reason, otherwise I’d take much more detailed pics of the mech assembly.

Basically, it looks like some sort of seimitsu mechanism with a blue and white base. I’ve never seen these before, but I’ve never worked with seimitsu parts before.


So they used a Sanwa stick only for the Japanese release… good to know.

Anyway here’s the pics:

The stick is screw mounted on the bottom shell and there’s even a hole for the shaft in case one wants to remove the ball:

The JLW restrictor is glued to the bottom:

I don’t think a JLW would be too difficult to mount on your stick, it would be just a matter of adding 4 spacers (of different height though) on the bottom shell. As for the JLF I don’t think you can mount one as neatly since they don’t have threaded inserts on the bottom like the JLW so you would have to drill holes on the top shell which is not even flat… can be done but it will not look very nice.


Huh, this explains a lot. Looks like a JLW will drop right in… Since I already own a JLF stick(HRAP), I’m going to go with a JLW with a red bat top and some 24mm buttons. Although if i’m right, it’s already mostly a sanwa button because i think that’s a sanwa switch soldered to the board. In either case, time to hack for hacking’s sake.


mind if i upload these pics to the Game SX/NFG Wiki for the CPS Fighter?


Sure, you can use the pics.

The buttons have Tokaicom switches which is what Seimitsu uses for their buttons so even if they’re not Sanwa they’re still arcade quality switches:

These switches are also found on the Neo Geo old style stick, Namco PS1 arcade stick and all the HRAP buttons.


i’m going to have to mangle the hole in the case.

Which means I have to either suck it up and break out the sharp objects, or just stick with the stock buttons. I’m honeslty not sure what I’ll do with the buttons.

However, with the stick, it’s a no brainer, I’m swapping in a JLW. Let’s hope this works.


Hey guys, I recently ordered a sanwa stick to go into a case I originally designed for an american style stick, and the mounting plate doesnt fit obviously. I’ve been trying to think of a way fit it in there, when i finally just noticed this.

That mounting plate looks the same dimensions as an American stick. Can anyone confirm this for me? It would save me a big headache!

Also, my friend is looking into seimetsu buttons. Any recommendations? I don’t know anything about them.


a few questions…
will a circular resistor work with a sanwa JLF? will any of the sanwa resistors work with any seimitsu joystick? last one, whats a better joystick for MVC2?


Wow neat topic.

I’m getting a SF:AC stick soon that i plan to mod one of these days. Thought about maybe this sanwa stuff, since i already have a happ stick. Since the choice between the two all boils down to a matter of preference, and happ is fine, i’ll just stick with it then.


Paik, what you just described is what’s going on. Only problem is, I’m not using alot of force. I play it the same way I do my Sanwa and I don’t have that problem. Even before I installed the stick, it had that extra vertical play when I was messing around with it. Granted, I haven’t gotten to the point yet where I can do moves by just go off the sound and feel of the clicks. I still need to hit the restrictor. When you say base metal piece, you’re not talking about the mounting plate are you? Something just isn’t right. I’m pretty sure I installed everything just fine. It’s not like it was that difficult to understand.


Hey guys, sorry that I haven’t been keeping up with the thread in helping answer some of your questions. I’ve been in Korea since Xmas, as some of you may know. I’m still there now and have very irregular access to a computer and internet. I don’t have the time to answer all the questions now but when I get back on Sunday, I’ll be sure to answer all the questions early next week.