View Full Version : problems with lp

02-19-2007, 08:22 PM
Alright guys Ive decided to stick with my gun and lp set up even though my friends with egos and angels all laugh at me. Ive owned 3 spyders and love them all. The only one Im having problems with is my LP spyder. Heres my question: (first read my set up so this makes it easier)

I have my exhaust port plugged for the maddman rocket valve. I can get my marker to recock at 250 psi. with the light main spring and get a fps of about 240. My problem is that I am still having recocking issues when I am on the field. Should I up my main spring and get a longer dwell time? or should I snip my light spring to get better recocking???(because it seems to work better the further I take out my velosity screw) Also would my plugging the exhaust port have anything to do with the recocking problem possibly creating a vaccum???

Just a side note my gun seems to work better when I oil it after every game but it only goes so far.
thanks in advance

02-19-2007, 08:29 PM
Exhaust port, what? try a tweaking your rocket valve to make the spring weaker therefore creating more airflow, if you marker uncocks at ANY time when it shouldnt then you should probably up the pressure to 300, i know you dont want to but if thats what it comes to. you also know you need to tweak something when the only way it will work is if you oil it after EVERY GAME. after a day of play and before the next is all that it should take.

02-19-2007, 08:42 PM
I don't see anything other than what in your avatar and the valve and spring setup you mentioned. Drummer's right about bringing your operating pressure up some. Running 300psi or less on compressed air is pretty good. If you want to bring the operating pressure back down once you get it running consistantly, look at getting a lightened striker, that will give you about 30 psi drop in operating pressure and at the same time a slight increase in fps.

02-19-2007, 08:51 PM
i just read on sundragonpps that blocking the exhaust port by the valve screw on the bottom of the body CAN in fact create a "suction" effect, try unblocking that hole then test it out. also try modifying your striker like MVS1 suggested to get the most efficiency out of your gun. and mvs is right 300 psi is still pretty good when you are talking about a gun that came stock running at about 800 psi.

Hob Hayward
02-19-2007, 08:55 PM
Yeah, so far in my experience, blocking the exhaust has only been bad. IF you have a poor breach seal it'd help to a degree, but with a good breach seal like most LP setups have it doesn't work too well.

Remove the plug and then see how it works out.

When I did it, I had it working great, and then i plugged the exhaust port, I went to the field, and I had to increase my input pressure to around 500psi to get the gun working right. I figured out later, the tape I had covering the exhaust prevented the gun from working right, and was killing my velocity.

02-19-2007, 09:26 PM
get a spring kit and mess with the different spring combinations.......On my Classic Spyder LP set-up I jsut did, I ended up using a stiff main spring and a med. valve. at 275 psi. shooting 275-280fps.

If I lowered the main to a med. or stock spring I got about 250fps and needed a light valve to up it to 270fps but would not go any higher at that psi. 300psi would probably work with this spring combo but I wanted to keep it lower.

It takes time to find what works the best and all guns differ from gun to gun. Go to Otters site, theres a lot of info on LP. ;)

02-19-2007, 10:29 PM
i think its time you increase your pressure a bit.

using a harder main spring might increase the dwell, but you won't have the momentum and force from the low pressure to push it back.

turbo chicken
02-20-2007, 06:17 AM
Wow 250psi huh ... i was just going to try and get in the 400's with mine ...

up the pressure as previously mentioned ... 300 is still great ...

02-20-2007, 06:36 AM
I have a maddman...

First try the next spring up.

If that doesn't work slightly up you PSI...have you tweaked your dwell by adjusting the srp on the valve pin?

02-20-2007, 08:28 AM
Thanks guys for the imput I'm going to try to unplug my exhaust port to see if that yeilds better results will tell shortly.
I already have all of the other stuff mentioned like lighter striker and spring kit so I will mess around with that if it removing exhaust port doesnt help.
thanks again!!

02-20-2007, 05:30 PM
oh by the way I can turn up the psi but i get over 300-320 velocity so its a double edged sword. I did unplug the exhaust port and noticed a very big difference. I was shooting like 6 month old paint and it was shooting flawlessly today. But 6 months ago I could not say the same. I was double chopping and paint was just pouring out of the barrel. So I will get a chrono and test the fps to see if I have really fixed the problems.

But I must say with my set up today and the crappy paint I was hitting a coke can from about 20ft away one after the other. I didn't go wild on it yet but I soon will to see if it really helped. Thanks again

Hob Hayward
02-20-2007, 06:51 PM
Glad to hear it, Isn't it so nice when your marker just works the way you want it to :p?

02-20-2007, 07:35 PM
Glad to hear it, Isn't it so nice when your marker just works the way you want it to :p?

^^^ things hardly ever work like you want them to but its such a relief when they do. its like heaven.