Spring Gun Tuning

[nightstalker]

hi guys,i have been helping a freind today putting in a gas fire,looking for some bits in his shed i spotted a gun case in the corner.he said it was a air gun,i said can i have a look he said yes,so i took it out of the bag it is a webly vulcan.22.it`s been neglected to say the least,stock needs a revarnish,the bluing is pitted with rust,but the barrel bore was clean no rust which surprised me,it has a trigger guard,i think it might be 20 years old but thats a guess,it also had iron sights a one time,i gave it a clean took the crap scope of and put one of my own on it,but i could not get it on the target,when i break the barrel it has bright metal one side and i was wondering weather it had been dropped and the barrel had took a knock,it has a hell of a twang when i fire it,is it worth taking as part payment for the gas fire,can i get barrels moderrators ect, for it if i take it on.any help would be great.
best regards.

[Firestorm]

is anyone writing all this down?

They could bring out a book........

Russ

[BONNIE & CLYDE]

big thanks to hsing-ee for this post good old tuning used this method for years myself good to see somebody had the time to do this to help others ill take my hat off to the guy
in modern day there are many variations but the basics are still the same
silicon oil best place for it is
the bin

[joffy]

is there any need to hone the cylinder in my hw80 ?

[Hsing-ee]

is there any need to hone the cylinder in my hw80 ?

Unless it has been damaged and scored, it would be best to leave it alone. Weihrauch do a fine job at the factory, no benefit will come of re-honing the cylinder. If you are having piston tightness issues, try sizing the piston seal. This can be done by spinning it and touching it with very fine abrasive paper. Get a V-Mach, Bonny & Clyde or Maccari tuning kit if you wish to finesse the performance of this truly excellent rifle. Be careful though as it is easy to put miles over the legal power limit.

[T 20]

silicon oil best place for it is
the bin

The top tuners from the past used to recommend the use Silicon oil on piston heads in the form of SM50.

As you advise against the use of Silicon, I thought I'd ask what you recommended instead ?


All the best Mick

[carld41]

I like this thread

[Gungeek]

Silicone oil lubrication for old guns with leather piston washers was recommended. Is that now considered bad? Regards ... Geek

[accused]

Well after about twenty years I am back tinkering and to be honest I am a little dissapointed that things are still frustrating when it comes to the good old spring gun design. Bought a Stealth recently and loved it but needed the "soul" of a spring gun again so off I went and sold the Stealth...

There was I hoping the niggles of 20+ years ago would have been just a memory....same issues that were there years ago are still there Today, bought a brand new HW80 recently and even though still robustly built the internals are a little bit of a disgrace with the cut spring and lucky chance tolerances. With modern machining it should be possible to have super smooth reliable consistency out of the box without resorting to tuning on £300+ guns!

So the tinkering starts and after a polish and lube things improved but then the cut spring needed dealing with, ordered an XS - truly awful too long and harsh then bent like a banana inside 50 shots! Back to the cut HW spring that actually looks better quality than most after market stuff but I cant live with the cut off end.

Then it's a TR ROBB spring...hmmm bit too hot and no facility to cut it at home, the garden gate spring collection grows!

Now it's an SFS spring, really nicely finished but sadly for some unknown reason gives shotgun groups - maybe a tight / loose guide compatability, who knows.

The last chance is going to be a Bonnie & Clyde kit from William all matching and if that goes the garden gate route it's sadly full circle to the PCP again.

Rant over

[Flannelmeister]

The last chance is going to be a Bonnie & Clyde kit from William all matching and if that goes the garden gate route it's sadly full circle to the PCP again.

Rant over

A good choice.

I have just fitted one of Bonnie and Clyde's kits as sold by Westy on here to revive an old .177 HW80.

You get a variety of brass washers/spacers for the piston and a couple of power bands to use on the spring guide.

In my case, no power bands and the thickest brass washer plus the thin delrin washer/top hat bearing in the piston provided the desired result.

Gun is now a joy to shoot @ 765 -770fps (where I like the power of my springers to be) with JSB Exacts which equates to around 11 ftlbs.

You won't be disappointed if you buy the kit and use the various lubes supplied correctly - Westy can advise you on what to use where.

[T 20]

Silicone oil lubrication for old guns with leather piston washers was recommended. Is that now considered bad? Regards ... Geek

Cheers Geek

I'm still no wiser as to what is used now.

I only asked the question because John Bowkett and many other top tuners used to recomend SM50 or MS50 on Synthetic and O ring piston heads.


Thanks again


All the best Mick

[BONNIE & CLYDE]

The top tuners from the past used to recommend the use Silicon oil on piston heads in the form of SM50.

As you advise against the use of Silicon, I thought I'd ask what you recommended instead ?


All the best Mick

sm50 is fine dont have a break down of what it contains but its not just silicon its a mix ,i used it for years on seals but now i coat with anti scuff like gn paste ,then wet with dryslide type lube ,both high molly content this way every time you cock & fire your rifle it buffs itself in no need to put dryslide in compression tube
i can send you a sample of my moly lube (dryslide) but much thicker no charge if you pm me your addy
thanks dave

[T 20]

sm50 is fine dont have a break down of what it contains but its not just silicon its a mix ,i used it for years on seals but now i coat with anti scuff like gn paste ,then wet with dryslide type lube ,both high molly content this way every time you cock & fire your rifle it buffs itself in no need to put dryslide in compression tube
i can send you a sample of my moly lube (dryslide) but much thicker no charge if you pm me your addy
thanks dave

Thanks for the info Dave

And thanks for the chat on Sunday, as a born again airgunner things have definitely moved on in the last 20 years.

You have Email by the way


All the best Mick

[finners]

I would just like to echo many comments about the Bonnie & Clyde tuning kits now sold by Westy.
I can only say that the tuning kit is simple to fit and the lube instructions are very good for the relative novice like me.

The results are amazing. I would encourage anyone who is unsure about their ability to fit one of these kits themselves to not worry. It's so gratifying when the rifle feels so much smoother and the consistancy has you thinking the chrono is stuck....!

Thanks again to both David (B&C) and Paul (Westy).

Finners

[Westy]

I would just like to echo many comments about the Bonnie & Clyde tuning kits now sold by Westy.
I can only say that the tuning kit is simple to fit and the lube instructions are very good for the relative novice like me.

The results are amazing. I would encourage anyone who is unsure about their ability to fit one of these kits themselves to not worry. It's so gratifying when the rifle feels so much smoother and the consistancy has you thinking the chrono is stuck....!

Thanks again to both David (B&C) and Paul (Westy).

Finners

Well, thanks for that Jez - you are more than welcome mate.

Cheers
Westy