What groupings are you getting?

pestobanana · August 29th, 2011, 20:18

I don't remember, I did these upgrades 2 years or so ago...
Air seal seems to be fine.

Windows · August 29th, 2011, 20:24

Exactly which upgrades did you put in your gun, and what is the FPS spread (I presume you had it chrono'd to get the 400 fps you said earlier)? As far as I remember, Clear hop up rubbers are to be avoided. However, Shredder does recommend it to be used with the scs.

pestobanana · August 29th, 2011, 20:29

FPS is going about 395-405.

Upgrades uhhh...

Modify S110 Spring
Deep Fire Cylinder Head
Modify High Speed Ultra Piston
Modify Polycarbonate Bearing Piston Head
Modify Air Seal Nozzle
Prometheus 6.03mm 509mm Tightbore Barrel
Guarder Clear Hopup Rubber
Shredder's Concave Spacer

I left out the upgrades that don't affect accuracy or fps.

Windows · August 29th, 2011, 20:33

If the air seal is good ( should give you about 3 FPS spread), The only things I can see it being are:
1 Dirty or greasy hop up or barrel
2 Poor quality ammunition
3 SCS is improperly installed or needs adjustment (I haven't played around with SCS too much yet but I remember that it's not just a plug and play thing.

Hope this helps.

pestobanana · August 29th, 2011, 20:40

Well would the air ;seal issue be between the hop up rubber and the air nozzle?

1. I just cleaned both
2. I'm using BB bastard .28

3. I'll reinstall the SCS and see what happens.

L473ncy · August 29th, 2011, 20:45

I've heard of people putting a wrap of plumbers tape/teflon tape around the barrel to aid in air seal, or something. Maybe try that?

Windows · August 29th, 2011, 20:50

Well, those are good quality upgrades and good ammo
10 FPS is a little much. Your still using the stock CA cylinder? Check to see if the nozzle is pushing firmly aghensed the hop up rubber (should cause the rubber to bulge a little) If not try Skladfin's tappet plate mod.

pestobanana · August 29th, 2011, 21:09

I'll try re-chronoing my gun. The chrono we used was a bit hard to use, and I was getting weird readings like 250, 360 and even 955.

I don't think it's an air seal issue though, because when I'm shooting it looks like it sometimes isn't coming out 100% straight.

Should I try a new hop up rubber?

Eeyore · August 29th, 2011, 21:14

Try it without the SCS, just to see. If you still get wonky groupings you can try the rubber too.

pestobanana · August 29th, 2011, 21:16

Quote:

Originally Posted by Eeyore

Try it without the SCS, just to see. If you still get wonky groupings you can try the rubber too.

Already did, groupings were about the same with the SCS and guarder clear bucking

And yes I am using the stock CA cylinder. Cylinder head and piston head seem to fit it perfectly though.

ThunderCactus · August 29th, 2011, 22:29

Unless you've got the gun bolted to a stand, it's pretty difficult to really accurately gage your grouping.
But accuracy is all about compression and hop rubber, not FPS or tightbores.
Make sure your mechbox is sealing at 95% when your air nozzle is in the forward position, you should be able to put 20lbs of pressure on your piston and have it move forward at half a snail's pace.
Once you know your mechbox is sealing, you need a quality spring to gage your hop seal. If you KNOW it's a 380fps spring, you should be getting no less than 380fps. I generally get an extra 10fps out of the max rating of a spring due to excellent compression.
You've already got a high quality hop rubber
And lastly is ammo. If your at 370-420, .28g BBs are best. .25g BBs just don't cut it.

My own 360fps G3-SG1 could outrange 470fps sniper rifles just due to having better compression parts.

pestobanana · August 29th, 2011, 22:44

Quote:

Originally Posted by ThunderCactus

Unless you've got the gun bolted to a stand, it's pretty difficult to really accurately gage your grouping.
But accuracy is all about compression and hop rubber, not FPS or tightbores.
Make sure your mechbox is sealing at 95% when your air nozzle is in the forward position, you should be able to put 20lbs of pressure on your piston and have it move forward at half a snail's pace.
Once you know your mechbox is sealing, you need a quality spring to gage your hop seal. If you KNOW it's a 380fps spring, you should be getting no less than 380fps. I generally get an extra 10fps out of the max rating of a spring due to excellent compression.
You've already got a high quality hop rubber
And lastly is ammo. If your at 370-420, .28g BBs are best. .25g BBs just don't cut it.

My own 360fps G3-SG1 could outrange 470fps sniper rifles just due to having better compression parts.

Compression isn't an issue. Modify S110 and Madbull M110 springs are both 380 fps springs, but I'm getting 400 fps with both springs. The air seal I've been getting actually doesn't even let the piston move forward at all when I'm pressing.

It looks like my rubber has a bit of slack in it so I'll look into trying a new one.

ThunderCactus · August 30th, 2011, 01:17

Awesome, I recommend firefly rubbers. I got one in my VSR and I'm shooting dimes at 200 feet

pestobanana · August 30th, 2011, 02:33

Quote:

Originally Posted by ThunderCactus

Awesome, I recommend firefly rubbers. I got one in my VSR and I'm shooting dimes at 200 feet

Do you remember how it shot with other rubbers?

ThunderCactus · August 30th, 2011, 04:33

Well it shot like crap with the TM rubber lol
My G3 had a guarder black and it was a laser rifle
My M4 uses a firefly and it gets pretty awesome range and accuracy
And my 249 uses an ARS bucking with SCS, also awesome range, less accurate than the non-full auto/full time guns though

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August 29th, 2011, 20:24	#17
Windows Trader rating Join Date: May 2008 Location: Burnaby BC	Exactly which upgrades did you put in your gun, and what is the FPS spread (I presume you had it chrono'd to get the 400 fps you said earlier)? As far as I remember, Clear hop up rubbers are to be avoided. However, Shredder does recommend it to be used with the scs. Last edited by Windows; August 29th, 2011 at 20:27..

August 29th, 2011, 20:29	#18
pestobanana Squid Porn Superstar, I love the tentacles! Trader rating Join Date: Nov 2008 Location: Richmond Hill and Waterloo, Ontario	FPS is going about 395-405. Upgrades uhhh... Modify S110 Spring Deep Fire Cylinder Head Modify High Speed Ultra Piston Modify Polycarbonate Bearing Piston Head Modify Air Seal Nozzle Prometheus 6.03mm 509mm Tightbore Barrel Guarder Clear Hopup Rubber Shredder's Concave Spacer I left out the upgrades that don't affect accuracy or fps. Last edited by pestobanana; August 29th, 2011 at 20:32..

August 29th, 2011, 20:45	#21
L473ncy Trader rating Join Date: Oct 2004 Location: 11-30-24-1W5	I've heard of people putting a wrap of plumbers tape/teflon tape around the barrel to aid in air seal, or something. Maybe try that? __________________ ಠ_ಠLess QQ more Pew Pew READY TO >> RACE

August 29th, 2011, 20:18	#16
pestobanana Squid Porn Superstar, I love the tentacles! Trader rating Join Date: Nov 2008 Location: Richmond Hill and Waterloo, Ontario	I don't remember, I did these upgrades 2 years or so ago... Air seal seems to be fine.

August 29th, 2011, 20:33	#19
Windows Trader rating Join Date: May 2008 Location: Burnaby BC	If the air seal is good ( should give you about 3 FPS spread), The only things I can see it being are: 1 Dirty or greasy hop up or barrel 2 Poor quality ammunition 3 SCS is improperly installed or needs adjustment (I haven't played around with SCS too much yet but I remember that it's not just a plug and play thing. Hope this helps.

August 29th, 2011, 20:40	#20
pestobanana Squid Porn Superstar, I love the tentacles! Trader rating Join Date: Nov 2008 Location: Richmond Hill and Waterloo, Ontario	Well would the air ;seal issue be between the hop up rubber and the air nozzle? 1. I just cleaned both 2. I'm using BB bastard .28 3. I'll reinstall the SCS and see what happens.

August 29th, 2011, 20:50	#22
Windows Trader rating Join Date: May 2008 Location: Burnaby BC	Well, those are good quality upgrades and good ammo 10 FPS is a little much. Your still using the stock CA cylinder? Check to see if the nozzle is pushing firmly aghensed the hop up rubber (should cause the rubber to bulge a little) If not try Skladfin's tappet plate mod. Last edited by Windows; August 29th, 2011 at 20:54..

August 29th, 2011, 21:09	#23
pestobanana Squid Porn Superstar, I love the tentacles! Trader rating Join Date: Nov 2008 Location: Richmond Hill and Waterloo, Ontario	I'll try re-chronoing my gun. The chrono we used was a bit hard to use, and I was getting weird readings like 250, 360 and even 955. I don't think it's an air seal issue though, because when I'm shooting it looks like it sometimes isn't coming out 100% straight. Should I try a new hop up rubber?

August 29th, 2011, 22:29	#26
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Unless you've got the gun bolted to a stand, it's pretty difficult to really accurately gage your grouping. But accuracy is all about compression and hop rubber, not FPS or tightbores. Make sure your mechbox is sealing at 95% when your air nozzle is in the forward position, you should be able to put 20lbs of pressure on your piston and have it move forward at half a snail's pace. Once you know your mechbox is sealing, you need a quality spring to gage your hop seal. If you KNOW it's a 380fps spring, you should be getting no less than 380fps. I generally get an extra 10fps out of the max rating of a spring due to excellent compression. You've already got a high quality hop rubber And lastly is ammo. If your at 370-420, .28g BBs are best. .25g BBs just don't cut it. My own 360fps G3-SG1 could outrange 470fps sniper rifles just due to having better compression parts.

August 30th, 2011, 01:17	#28
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Awesome, I recommend firefly rubbers. I got one in my VSR and I'm shooting dimes at 200 feet

August 30th, 2011, 04:33	#30
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Well it shot like crap with the TM rubber lol My G3 had a guarder black and it was a laser rifle My M4 uses a firefly and it gets pretty awesome range and accuracy And my 249 uses an ARS bucking with SCS, also awesome range, less accurate than the non-full auto/full time guns though

What groupings are you getting?

Airsoft Guns Discussion