Walther LGU Varmint .177 spring change

[Buldawg76]

I have a LGV competition Ultra 177 that is a pleasure to shoot for a spring gun with a very fast lock time and just one solid thud. It shoots JSB 8.44s at 860 and 10.34s at 780 with one hole accuracy out to 35 yards with ease if I do my part. I have the JM spring as well but have yet to install it since its so good now I am afraid it will change if I mess with it. I did have to open it up after about 50 shots to quell the twang that developed, so some cleaning of the barely greased spring and a fresh coat of JM black tar and its twang free and a happy camper again.

Mike

[WHITEFANG]

I had already made a new guide for the factory spring prior to the JM replacement. I have to say that the JM SPRING had a better fit for his spring than the factory spring. So very possible the JM fit to your factory guide no tar may be required.

Not big fan of the tar but it does it's job on a have to case tune.

I put off the JM install due to your thoughts. The gun was so good after a little lube and a few odds and ends that I just could not make myself test the waters of a chance o not being able to get back like it was. But these guns if shoot with the factory spring there is no doubt they should still have the accuracy.

Love the captured guide and the fact no trigger brake down required. Really a plug and play spring. replacement.

But again a spring compressor is advisable due to more spring exposure and preload for a safety factor. I usual remove all my scopes on much work.  Not on this job and still had little elavation change. 💀

[Buldawg76]

I had already made a new guide for the factory spring prior to the JM replacement. I have to say that the JM SPRING had a better fit for his spring than the factory spring. So very possible the JM fit to your factory guide no tar may be required.

Not big fan of the tar but it does it's job on a have to case tune.

I put off the JM install due to your thoughts. The gun was so good after a little lube and a few odds and ends that I just could not make myself test the waters of a chance o not being able to get back like it was. But these guns if shoot with the factory spring there is no doubt they should still have the accuracy.

Love the captured guide and the fact no trigger brake down required. Really a plug and play spring. replacement.

But again a spring compressor is advisable due to more spring exposure and preload for a safety factor. I usual remove all my scopes on much work.  Not on this job and still had little elavation change. 💀

Hey Fang
Do you by chance have pics of the captured guide you made for your LGU. I was thinking of calling Vortek to see if I could buy just the rear guides that he use in his kits for a HW77/97 since I believe they are pretty much the same size ( the old 25mm seal versions) as the LGU/LGV internals.

I am not a fan of tar either but its all I had to quell the twang and accompanying vibration. It did drop the fps by about 15 fps so would rather have a captured guide to eliminate the tar. I have a homemade spring compressor that I used to tar the spring so that's no issue with disassembly.

Do you sell the captured guide that you made by chance or is it capable of being made without a lathe. I do have a drill press and dremel as well as 45 years of automotive repair tools at my home since retiring three years ago. 

Mike

[Art Deuel]

The Vortek HW77 25mm kit is a "drop-in" for the LGU and can be used without replacing the Walther "captured" guide.
I prefer to make a very small "captured" piece that is flush with the face of the trigger housing just to be sure that the piston latching rod will not touch metal as it is being cocked.

You should be able to make the small guide piece without any fancy equipment.....or you can simply cut the factory guide off at the face of the trigger housing and everything will work.

The Vortek HW77 25mm bore kit will get you in the 14 to 15 FPE range when installed. The Vortek 25mm piston seal will fit and work fine in the LGU but the original Walther seal is a very good seal and has long life, I am going on the third season of FT shooting with the original Walther seal and I will shoot the next season with it also.

I shoot WFTF Field Target which is limited to 12 FPE so I cut 3 coils from the Vortek spring and that drops it 11.4 FPE so I am legal in that class.

The LGU is a great rifle, very accurate!

ART

[WHITEFANG]

My  guide was made as the factory guide.
As mentioned above easy fix would be just cut the factory guide off  to allow the reg flanged guide  fit.

Hector and the Yankee tune shows the method that can be done to use as a vortek set up or flanged rear guide. You just need a centering method to keep the flange from walking I would think. As a fixture.

[Buldawg76]

The Vortek HW77 25mm kit is a "drop-in" for the LGU and can be used without replacing the Walther "captured" guide.
I prefer to make a very small "captured" piece that is flush with the face of the trigger housing just to be sure that the piston latching rod will not touch metal as it is being cocked.

You should be able to make the small guide piece without any fancy equipment.....or you can simply cut the factory guide off at the face of the trigger housing and everything will work.

The Vortek HW77 25mm bore kit will get you in the 14 to 15 FPE range when installed. The Vortek 25mm piston seal will fit and work fine in the LGU but the original Walther seal is a very good seal and has long life, I am going on the third season of FT shooting with the original Walther seal and I will shoot the next season with it also.

I shoot WFTF Field Target which is limited to 12 FPE so I cut 3 coils from the Vortek spring and that drops it 11.4 FPE so I am legal in that class.

The LGU is a great rifle, very accurate!

ART

Thanks Art
I was pretty sure the 77 kit would work in my LGV but I don't really need the complete kit just the rear guide he uses in the kit. I was hoping to use it with either the stock spring or the JM spring in place of the 77 spring that comes in the kit. I shoot FT with mine also but in Hunter class so I want to up the power to shoot the 10.34s closer to 890 fps than it does now with them at 780 it does now.

I would likely make a new piston rod guide to fit in the pocket inside the trigger housing instead of cutting my spring guide off flush with the housing. I like to keep the factory parts as is so if I ever sell it I can put back to stock if the buyer wishes but it likely I will never sell the LGV. I also love my LGV and its far more accurate than I am most days.

Mike

[Art Deuel]

Fang,
The Vortek rear guide flange is a near perfect fit in the LGU tube, it will stay centered without any help, that is why you could probably get away without the small guide piece in the trigger housing.

ART

[brent375hh]

I am happy to see that it appears that I don't have to count on Umarex for spares in my future.

[Buldawg76]

Here is another source for parts for most any German made gun including old and new.

http://www.waffencenter-gotha.de/shop/Ersatzteile/Luftdruckwaffen/HERSTELLER-MODELL/WALTHER/WALTHER-Luftgewehre/Walther-LGV:::11_12_614_307_562_1309.html

Mike

[HectorMedina]

Thanks Art
I was pretty sure the 77 kit would work in my LGV but I don't really need the complete kit just the rear guide he uses in the kit. I was hoping to use it with either the stock spring or the JM spring in place of the 77 spring that comes in the kit. I shoot FT with mine also but in Hunter class so I want to up the power to shoot the 10.34s closer to 890 fps than it does now with them at 780 it does now.

I would likely make a new piston rod guide to fit in the pocket inside the trigger housing instead of cutting my spring guide off flush with the housing. I like to keep the factory parts as is so if I ever sell it I can put back to stock if the buyer wishes but it likely I will never sell the LGV. I also love my LGV and its far more accurate than I am most days.

Mike

Hello Mike!

Sorry, but I cannot see the LGV yielding the 18.2 ft-lbs you want. And even less with the Vortek HW77 kit or the guide thereof.

Your spring may be somewhat tired, as OoB the LGV does a little above 800 fps with the 10.3's:
http://www.ctcustomairguns.com/hectors-airgun-blog/the-walther-sport-family

Which translates to a little under 15 ft-lbs. To get 18.2 would require a complete redesign of the piston itself.

And by then, it may be a rather "unshootable" gun.

JMO

But if you really want to explore the possibilities of this platform, drop me a line.

Keep well and shoot straight!





Héctor

[Buldawg76]

Thanks Art
I was pretty sure the 77 kit would work in my LGV but I don't really need the complete kit just the rear guide he uses in the kit. I was hoping to use it with either the stock spring or the JM spring in place of the 77 spring that comes in the kit. I shoot FT with mine also but in Hunter class so I want to up the power to shoot the 10.34s closer to 890 fps than it does now with them at 780 it does now.

I would likely make a new piston rod guide to fit in the pocket inside the trigger housing instead of cutting my spring guide off flush with the housing. I like to keep the factory parts as is so if I ever sell it I can put back to stock if the buyer wishes but it likely I will never sell the LGV. I also love my LGV and its far more accurate than I am most days.

Mike

Hello Mike!

Sorry, but I cannot see the LGV yielding the 18.2 ft-lbs you want. And even less with the Vortek HW77 kit or the guide thereof.

Your spring may be somewhat tired, as OoB the LGV does a little above 800 fps with the 10.3's:
http://www.ctcustomairguns.com/hectors-airgun-blog/the-walther-sport-family

Which translates to a little under 15 ft-lbs. To get 18.2 would require a complete redesign of the piston itself.

And by then, it may be a rather "unshootable" gun.

JMO

But if you really want to explore the possibilities of this platform, drop me a line.

Keep well and shoot straight!





Héctor

Hi Hector

I was not really expecting it to get to the desired 890 with 10.34s but was just hoping it get over the 800 mark and closer to the 820 or 830 mark. The gun is a refurbed from AGD so not sure how much it has been shot before I got it but it is in as new condition appearance wise and I have put about 15 to 200 pellets thru it so I hope the spring is not tired already. Mine is at about 14 ft-lbs depending on the pellet since with JSB 8.44 premium ones in the black box it does 880 and with the everyday 8.44s it does 860 both 4.52mm heads.

I would be happy with 15 to 16 ft-lbs out of it but it shoots so good right now really am hesitant to do much to it at this time so just exploring my options now for the future game plan. it has a very nice fast lock time with one solid thump and minimal recoil to the extent that it is a one hole gun off of a bag rest at 35 and under yards.

When I am ready to move forward I will contact you. Sorry for not getting back to you early this year on my B40 with the tuning you were going to help me with on it. I had some health issue that came up unexpected and kept me down for a few months. I have not done anything with it since getting the LGV and now a TX as well.

Did you ever find a beater B40 to play with and explore its harmonics and potentials.

Mike

[HectorMedina]

Hi Hector

I was not really expecting it to get to the desired 890 with 10.34s but was just hoping it get over the 800 mark and closer to the 820 or 830 mark. The gun is a refurbed from AGD so not sure how much it has been shot before I got it but it is in as new condition appearance wise and I have put about 15 to 200 pellets thru it so I hope the spring is not tired already. Mine is at about 14 ft-lbs depending on the pellet since with JSB 8.44 premium ones in the black box it does 880 and with the everyday 8.44s it does 860 both 4.52mm heads.

I would be happy with 15 to 16 ft-lbs out of it but it shoots so good right now really am hesitant to do much to it at this time so just exploring my options now for the future game plan. it has a very nice fast lock time with one solid thump and minimal recoil to the extent that it is a one hole gun off of a bag rest at 35 and under yards.

When I am ready to move forward I will contact you. Sorry for not getting back to you early this year on my B40 with the tuning you were going to help me with on it. I had some health issue that came up unexpected and kept me down for a few months. I have not done anything with it since getting the LGV and now a TX as well.

Did you ever find a beater B40 to play with and explore its harmonics and potentials.

Mike

Hello Mike!

No worries, mate!

Nope, have not gotten a B40 and now I am truly busy anyway.

I hope your health issues are getting resolved, nothing is worse than being sick/ill.

Anyway, Happy Holidays!








Héctor

[Buldawg76]

Hi Hector

I was not really expecting it to get to the desired 890 with 10.34s but was just hoping it get over the 800 mark and closer to the 820 or 830 mark. The gun is a refurbed from AGD so not sure how much it has been shot before I got it but it is in as new condition appearance wise and I have put about 15 to 200 pellets thru it so I hope the spring is not tired already. Mine is at about 14 ft-lbs depending on the pellet since with JSB 8.44 premium ones in the black box it does 880 and with the everyday 8.44s it does 860 both 4.52mm heads.

I would be happy with 15 to 16 ft-lbs out of it but it shoots so good right now really am hesitant to do much to it at this time so just exploring my options now for the future game plan. it has a very nice fast lock time with one solid thump and minimal recoil to the extent that it is a one hole gun off of a bag rest at 35 and under yards.

When I am ready to move forward I will contact you. Sorry for not getting back to you early this year on my B40 with the tuning you were going to help me with on it. I had some health issue that came up unexpected and kept me down for a few months. I have not done anything with it since getting the LGV and now a TX as well.

Did you ever find a beater B40 to play with and explore its harmonics and potentials.

Mike

Hello Mike!

No worries, mate!

Nope, have not gotten a B40 and now I am truly busy anyway.

I hope your health issues are getting resolved, nothing is worse than being sick/ill.

Anyway, Happy Holidays!








Héctor

Hector

I have gotten my health back on track now and doing well and feeling good now.

If you still are interested in exploring the potentials of the B40 I would be willing to send mine to you to play with for awhile. I have a new compression chamber and a couple different manufactures seals and new cocking arm and shoe to use for replacement parts if needed.

Just let me know and in no hurry on it if you are interested.

Have a great holidays season as well.

Mike

[HectorMedina]

Hector

I have gotten my health back on track now and doing well and feeling good now.

If you still are interested in exploring the potentials of the B40 I would be willing to send mine to you to play with for awhile. I have a new compression chamber and a couple different manufactures seals and new cocking arm and shoe to use for replacement parts if needed.

Just let me know and in no hurry on it if you are interested.

Have a great holidays season as well.

Mike

VERY glad to hear that health is back with you.

I need to test a completely new concept in the LGV, IF that works, then we will have a totally new game to play. I will then contact you.

THANKS a bunch for the offer!

Keep well and shoot straight!







HM

[WHITEFANG]

Nice that  the link has parts available. Price not bad. But I just wonder if they are original Walther replacements. Which I thing they are.

I still see many options in the states for upgrade springs and more.

I book marked it. I have a friend that is tied to BLACKPOOL. Springs and things can be had there. Vmach parts.

Maybe Hector is on to something? I had 2 B40 nice guns. Accuracy was side by side with my TX. EVEN did an LW .20 in one. The .20 was accurate but did not put out the power I wanted for a .20. Easy re barrel except for the threaded breach. I went back using the thread that Bam used. It is a real odd ball thread. On another I would go back with a common thread. The barrel once pinned will go no where and a good light press fit with Industrial LT it is in place.

[Buldawg76]

Hector

I have gotten my health back on track now and doing well and feeling good now.

If you still are interested in exploring the potentials of the B40 I would be willing to send mine to you to play with for awhile. I have a new compression chamber and a couple different manufactures seals and new cocking arm and shoe to use for replacement parts if needed.

Just let me know and in no hurry on it if you are interested.

Have a great holidays season as well.

Mike

VERY glad to hear that health is back with you.

I need to test a completely new concept in the LGV, IF that works, then we will have a totally new game to play. I will then contact you.

THANKS a bunch for the offer!

Keep well and shoot straight!







HM

I will be waiting on the testing and results for the LGV and the B40 is not going anywhere so when and if you are ready just send me a PM.

Mike

[Buldawg76]

Nice that  the link has parts available. Price not bad. But I just wonder if they are original Walther replacements. Which I thing they are.

I still see many options in the states for upgrade springs and more.

I book marked it. I have a friend that is tied to BLACKPOOL. Springs and things can be had there. Vmach parts.

Maybe Hector is on to something? I had 2 B40 nice guns. Accuracy was side by side with my TX. EVEN did an LW .20 in one. The .20 was accurate but did not put out the power I wanted for a .20. Easy re barrel except for the threaded breach. I went back using the thread that Bam used. It is a real odd ball thread. On another I would go back with a common thread. The barrel once pinned will go no where and a good light press fit with Industrial LT it is in place.

Fang '
I have gotten parts from them for my 300s and can assure you they are factory parts and shipping is quite timely for coming from Germany. If you need anything email Sarah Siepmann for what you need since she is who handled my order and was very informed on the parts needed and responds very fast in a timely manner.  I was very impressed with the service and courtesy I received.

Mike

[WHITEFANG]

915+fps with the JM spring and slight spacing but over all shot cycle and cocking much improvement. More spacious g can be added but I an sticking with what I have. Accuracy no change. JSB EXACTS  7.8.

[Buldawg76]

915+fps with the JM spring and slight spacing but over all shot cycle and cocking much improvement. More spacious g can be added but I an sticking with what I have. Accuracy no change. JSB EXACTS  7.8.

My LGV is shooting the 7.87s at 900 fps in stock form and the 8.44s at 880 which is the pellet it really likes the best. it shoots 10.34s at 775 very well also but the trajectory is to loopy for my tastes.
I will stick with the 8.44s and stock spring for now until I get the urge to tune it some.

I just tuned my TX with a vortek SHO kit and its shooting 8.44s at 900 fps and 10.34s at 795 with a 8 fps ES spread so it will be fed a diet of 10.34s. The lock time is super fast with virtually no recoil to speak of since I can watch the pellet in flight thru the scope with ease.

Mike

[WHITEFANG]

I lost a little fps. Not tried any other pellet this time on the chrony. Worth the lose.