Real Sword type 56-1 on Guarder SP-130

[ybrik]

I had a long night doing troubleshooting. 3 weeks ago, I changed out the stock spring to SP-130 and did shimmings and put 7mm oiless metal bushings.

After test firing today, no response from the motor. I remember at some point in time when upgrading, I did messed up the switch assembly's contact with the selector plate. Now the switch assembly's contacts are raised enough to contact witht the selector plate's metal contacts.

Then after putting the SP-130, spring will compress but not fully rearwards, the motor will just click...
I remember the SP-130 spring is longer than the stock spring, so it made me think that the spring when fully compressed would not let the piston's last tooth clear the sector gear....
I then changed out to stock spring and it fired.....

Anybody has installed SP-130 to their type 56-1?
If there are no issues, I'm thinking the motor is not strong enough to crank the spring, but according from realsword, it should be able to.

I'm using 11.1V 1200mah 30C lipo.

[Kozzie]

I ran into that situation with my type 56-2. I installed a Prometheus bearing spring guide and a Prometheus 110 spring. The Prometheus spring is longer than the stock spring, same for the guide. It was like you're describing, the piston didn't have enough room for the last tooth to clear and be released. The motor would halt when the piston ran out of travel and the gearbox locked-up. I was able to replace the Prometheus guide with a Madbull bearing guide (which is shorter) and all is hunky dory.

edit: The RS high torque motor that comes in the type 56 should have no problems with that spring. The gearbox used by the type 56 is smaller than a Marui V3. You either need to gain space from somewhere else or find a smaller spring.

[ybrik]

In my case spring guide with bearing is not the issue. I'm using systema. It's hard to buy upgrade parts with no guarantee it would fit. With this type of gearbox, it won't close with a different cylinder head, not unless realsword's plastic stock one. Could you confirm that S well?

[Kozzie]

I currently have this cylinder head in mine http://www.airsoftparts.ca/store2/in...oducts_id=1819 It's the only other one I've tried and it works fine, this leads me to believe that all regular V3 cylinder heads will work. I did have to shave down the second tooth on the piston because of the sorbo on the new cylinder head but that's not unique to this gearbox. The Mask piston head seemed too tight in the RS cylinder so I'm using the stock one, It looks of better quality anyways.

The cylinder head and the spring guide http://www.airsoftparts.ca/store2/in...oducts_id=2081 were the only things I have changed out in the gearbox. I find everything else to be well made with a good air seal.

You're using the stock spring guide? If you can't get any extra room via the spring guide I recommend you look into a different spring or cutting your 130 down. I imagine there is some info already out there on different brands and their lengths.

There's another guy on here I think it's Amos who seems to be familiar with the Type 56 gearbox.

[ybrik]

I tried to put a BU cylinder kit and mechbox won't close in front. But the holes of the BU cylinder head matches. It just won't accept it.
I'm currently using systema spring guide with bearing.

Good thing no piston teeth or gears were stripped when the piston was stucked on sp130. The motor just clicks and no other gear grinding sound.

Hope Amos could chime in. Really wanted to come up with lists of compatible parts that have been tried on this gearbox.

[ybrik]

Here's the spring comparison pic:
Black one is Guarder SP130 vs stock RS-TYPE 56-1 spring (what's the rating of this btw?)

[Kozzie]

That looks about the same size as the Prometheus spring I have in mine. I never crono'd the stock spring, I was told that it's above 400 fps which doesn't let me use it at most of the games I attend so I swapped it out right away.

I would try putting the stock spring guide in and see if that buys you the space you need to use that spring. I'm not sure what FPS you're after but I'm getting +or- 395 out of my set-up with no hop last I cronied.

By BU I'm assuming you mean bore-up. Maybe thats the problem? The bore up parts are too big. Do you have a longer barrel installed if not you don't need a bore-up kit.

The RS gearbox is slightly shorter, 5mm I believe, than a V3. This was done to achieve true 1:1 dimensions for the gun. As a result the piston/sector gear have one less tooth. I think everything else is V3 compatible. I think it's even possible to use a regular piston and sector gear but the piston needs to be altered to shorten it.

IMO the cylinder head is worth switching to a metal double o-ring version and I prefer bearing spring guides. Other than that the stock RS parts are good parts.

[ybrik]

I was thinking about doing that this morning but it would not make any sense. As right now with the stock spring and systema spring guide, I'm having no issues. That means the piston clears the sector with that spring guide.

Now even if I had to put back the stock POM plastic spring guide to buy space, with the fully compressed sp130, it would still not clear the piston.

Yup, bore-up it is. A slight BU deviation on the cylinder head's outer diameter should not cause an issue, but with this Gbox, it would.

I'll try to swap a standard metal cylibder head with double o-ring next time.