Huma Regulator installed in the s510

Forums PCP Airguns Huma Regulator installed in the s510

  • Views : 2403
  • Link

    james.dean
    Participant
    Member

    Hi guys !!

    As promised here are my first impression approximatly 30 minutes after the installation of the regulator.

    Ordered last Wednesday, I received it today (long because of the easter week end). It came in a small envelop, no spares, no bits nothing except the regulator, you’d like at least spare O-rings when you compare to Robert Lane’s reg which are sent with grease, drill bit, spares.
    So the company based in Netherlands is very serious for the whole sending and tracking thing but we’d expect a bit more when we open the envelop.
    That was the “down-side”.

    Now, the reg itself is really well made. You even have the pressures “written” by step of 5 (125 – 130 – 135 etc..) directly on the reg and the screw that has a small line that indicates at which pressure your reg is set which makes any tuning very easy. If you want a precise setting, the guys in Netherlands will do it for free if you ask them when ordering the product.

    The fitting instructions on the huma website are crystal clear, you can’t miss a step, you can absolutely NOT go wrong unless you don’t follow the said instructions.

    Fitting the reg might seem difficult at first but it’s not. You only have to be patient and pay attention to what you are doing. Take the good measurements when it come to drilling the cylinder for the breathe hole and cutting the firing POT.
    Be consciencious when sanding the inside of the cylinder (I used 1000 grit dry/wet sand paper) don’t try to do it quickly. Time and patience are the master words here.

    Now that it’s fitted… Everything seems to be fine. No leaks detected for the moment, rifle filled up to 250 bars and reg is staying at 135 bars. When shooting, everything works flawlessly now, I only have to receive my chrony to check the velocities and if the reg is doing its job.

    So that’s it, my very first impression and, unless velocities are not stable, I’d definitely recommend this reg =)

    Again, sorry for the mistakes.. Keep in mind I’m french !! ^^

    Link

    LDP
    Participant
    Member

    Congrats on the succesful install. You will be very pleased with the performance of the S510 once you get the tuning finished. As good as the AA is stock its even better after the regulator. 

    If you have a fac model the first thing you will find out when you run it over the chrony will be that you are wasting a ton of air. Unless you have the reg set really high. The first thing you should do is machine the hammer down to lighten it or by the non FAC model hammer. Once you have the hammer weight down you can play with the hammer spring to see where that needs for the best efficiency. 

    Link

    james.dean
    Participant
    Member

    That’s not cool =/
    Plus, I can’t “play” with the spring tension, this is not “tunable”.
    So I’ll see if my shot counts fits my requirements or not..

    Are you talking specifically of the s510 when a reg is installed or is it general ??

    Link

    james.dean
    Participant
    Member

    And the reg is set at 135 bars mate =]
    What do you think about it?

    Link

    LDP
    Participant
    Member

    They are tunable so dont worry. Mine is set at 135 bar as well. I lightened my hammer by 10-12 grams and ended up keeping the factory spring. The spring can be easily tuned by replacing it with different weight springs or cutting it. Mine with 135 bar setting and factory spring with the lightened hammer is shooting  18 gr. JSB @ 845 fps avg. 

    Link

    james.dean
    Participant
    Member

    That’s good !!! I’m looking for 920 fps with the 16 grains..
    So do you think my extreme spread will be affected by the “too heavy” factory hammer ??
    And how have you machined it please ??
    Finally, how many shots per fill (starting at 240 bars) are you getting and with which extreme spread ?

    Lot of questions mate ^^ sorry but I’d like to tune it to its best =)

    Link

    james.dean
    Participant
    Member

    I also noticed that the rifle was a bit more noisy… Did you notice this as well ??

    Link

    jking
    Participant
    Member

    James, here’s a link that might help you. Myself, LDP and Ghostmaker regulated our S510 carbines about the same time and we all went through basically the same steps to get to the finished product. Be patient and don’t get discouraged because it is kind of a PITA but it sure was worth while. I also have some photos of hammer weight reduction steps etc. We’ll be glad to help you along the way. Scott (Motorhead ) is also a great source of information and knowledge. He’s mostly on the GTA and Marauder forums.
    Jimmy
    http://www.gatewaytoairguns.org/GTA/index.php?topic=94723.0

     

    Link

    jking
    Participant
    Member

    It will actually get quieter than what it was, with less hammer bounce and waisted air.
    jimmy

    Link

    james.dean
    Participant
    Member

    Ok thanks a lot mate =)
    Seems that I Still got plenty of work to do then ^^
    Sorry in advance for all the questions I might be asking ^^

    Link

    LDP
    Participant
    Member

    Dont worry about the questions ask as many as you need. 

    Jimmy thanks for posting the links and additional info. I am at work so its harder to do all that. 

    Link

    james.dean
    Participant
    Member

    No worries mates I have my time =)
    I’ve read 5 pages out of 7 on the other forum where you compare your settings and for the moment, what I’m thinking is that I should only reduce the hammer weight (or order a standard rated hammer as I don’t have a lathe) because, unlike you, I have the full size rifle so I might be getting at least 40 shots (plus, I’m filling it to 230 – 250 bars, depending on my mood)..
    what would YOU guys suggest as you are the wise ones here ^^
    again, thank you very much for the help =)

    Link

    LDP
    Participant
    Member

    Having the full size deffinately changes it. I would think at most you will need to change the hammer. But if you want more velocity you might not need much change. It boils down to the regulator setting you settle on. @135 bar you will at least need a lighter hammer. 

    Link

    james.dean
    Participant
    Member

    This is reassuring ^^ I’ve finished reading the pages and there is one guy, motorhead, who has the setting I’m looking for but he has made sooooo many upgrades (I don’t think I’m capable of doing these upgrades as I don’t have the tools and I don’t even understand what he talks about lol ^^).
    So you telling me I’d only need a lighter hammer is definitely reassuring =)
    So what would you suggest mate… find someone with a lathe and reduce the weight to 34 grams? Maybe I could use a file.. 
    I really dunno what I should do, you have all my trust and I’ll follow your suggestion there in order to obtain my 32-35 ftlbs on 50 consistent shots.. =)

    Link

    BigTinBoat
    Participant
    Member

    “james.dean”This is reassuring ^^ I’ve finished reading the pages and there is one guy, motorhead, who has the setting I’m looking for but he has made sooooo many upgrades (I don’t think I’m capable of doing these upgrades as I don’t have the tools and I don’t even understand what he talks about lol ^^).
    So you telling me I’d only need a lighter hammer is definitely reassuring =)
    So what would you suggest mate… find someone with a lathe and reduce the weight to 34 grams? Maybe I could use a file.. 
    I really dunno what I should do, you have all my trust and I’ll follow your suggestion there in order to obtain my 32-35 ftlbs on 50 consistent shots.. =)
     

    
I chucked my hammer in my drill press and went at it with a 4″ grinder to get it to 37grams.
    http://www.gatewaytoairguns.org/GTA/index.php?topic=104478.msg988780#msg988780

    I originally thought my reg was set on 125, but the gauge looks like it is right on about 135.

    Link

    james.dean
    Participant
    Member

    Thanks for the link mate =)
    Still, I don’t have a drill press, only a drill and a grinder but I think I’ll find a way to lighten the hammer.
    Now what are your results with this mod modification please? Have you done any other mod?
    And carefully if you use your cylinder gauge as a reference, they are usually not reliable.. They’ll give you a pressure at more or less 10 bars..

    Link

    LDP
    Participant
    Member

    Just guessing here but I think in order to reach 35 fpe you will need to do the valve mods motorhead did to get the air moving freely. It sounds complicated but its not to bad. With the valve mods to open up the air flow you should have no problem hitting your goal. I know Matt  was roughly getting 30 fpe and was able to squeeze out 100 shots on the higher fill if my memory is correct. 

    Link

    BigTinBoat
    Participant
    Member

    “james.dean”Thanks for the link mate =)
    Still, I don’t have a drill press, only a drill and a grinder but I think I’ll find a way to lighten the hammer.
    Now what are your results with this mod modification please? Have you done any other mod?
    And carefully if you use your cylinder gauge as a reference, they are usually not reliable.. They’ll give you a pressure at more or less 10 bars..

    
The link to my mods are in post. I lightened my hammer and also cut my hammer spring down. I am getting 40 shots (24FPE) with the carbine.

    Before I got my drill press I used a piece of metal strapping and 2 screws to secure my drill motor to a piece of 2×6. I would then chuck things in the drill and use the grinder to cut away. This way you don’t have to hold both the drill and the grinder.

    Link

    james.dean
    Participant
    Member

    LDP: Yeah 35 is not too much but I can live with 31 – 32 if higher power requires all the mods ^^

    Bigtinboat: I can’t open the link right now as I’m in my phone and only have enough credit left to answer here ^^ but thanks for telling me =) I’ll watch it tomorrow.

    And I guess that if I only lighten the hammer and do not touch to the spring, I’ll be able to increase my shot count to 40-50 and get at least my 30 ftlbs.. Don’t you guys think this could be a good compromise ?

    Link

    james.dean
    Participant
    Member

    Maybe I’ll have to set the reg at 140 – 145 bars…

Viewing 20 posts - 1 through 20 (of 63 total)

You must be logged in to reply to this topic.