HW95 + Titan No.8 = pain in the arris

[robs5230]

In my opinion Titans are too harsh for the majority of springers.

I'd start with one of the HW 3.1 wire springs and go from there.

[Mach 1.5]

Ditch the titan and ask Venomman for a VMach spring for a 95. Mach 1.5

[Shed tuner]

yup.. you need 3.0 or 3.1mm wire

a titan #8 is apparently 3.3mm = way too stiff

[DCL_dave]

Thanks guys, I know I can swap it out for a softer spring but would prefer to work with what I have for the time being.

does the weight of the spring add to the potential power and piston weight?

if I chop the dead coils off and perhaps chop/collapse another coil, thus further reducing spring weight and stored energy, will this reduce felt recoil?… obviously I’ll have to pack out the spring guide to get some preload back on the spring… trying to find a balance between spring potential and preload to reduce power and the snappy shot cycle…does this make sense?

[maximus]

Thanks guys, I know I can swap it out for a softer spring but would prefer to work with what I have for the time being.

does the weight of the spring add to the potential power and piston weight?

if I chop the dead coils off and perhaps chop/collapse another coil, thus further reducing spring weight and stored energy, will this reduce felt recoil?… obviously I’ll have to pack out the spring guide to get some preload back on the spring… trying to find a balance between spring potential and preload to reduce power and the snappy shot cycle…does this make sense?

I'm afraid if you want it to shoot nicely you're going to have to let go of the Titan no. 8. Do you still have the original HW spring? Fitted guides in that should be an improvement although many of us struggle to get the 95 shooting as sweetly as it should do on paper. Regards Max

[TonyL]

. Do you still have the original HW spring? Fitted guides in that should be an improvement. Regards Max

Absolutely.

[robs5230]

A good starting point for tuning any springer, is knowing what you want to achieve.

If the goal is a snappy, harsh, and hold sensitive rifle, the Titan is the right choice of spring.

[look no hands]

I was always led to believe that collapsed coils act like piston weights and can effect the power, I'd remove the end that sits in the piston and collapse a single coil, are you using any delrin top hats or slip washers?

Pete

[tinbum]

That spring is too stiff, adding dead preload to a short spring increases stiffness. In this case it is also increasing piston bounce and cocking effort.
The only real answer is to use the right spring, 3.1mm wire is ideal, then reduce the spring to power so you have no dead preload.

[Shed tuner]

That spring is too stiff, adding dead preload to a short spring increases stiffness. In this case it is also increasing piston bounce and cocking effort.
The only real answer is to use the right spring, 3.1mm wire is ideal, then reduce the spring to power so you have no dead preload.

yup.

"Ye cannae change the laws of physics"

[DCL_dave]

That spring is too stiff, adding dead preload to a short spring increases stiffness. In this case it is also increasing piston bounce and cocking effort.
The only real answer is to use the right spring, 3.1mm wire is ideal, then reduce the spring to power so you have no dead preload.

Why does dead spring space increase piston bounce? Is the weight of the spring adding to felt recoil?…And are you saying it is better to have no preload?…in the current set up if I add two brass slip washer in the piston end to increase preload to about 8mm, the fps increases to around 825!… it,d doing my crust in…

[TonyL]

Ditch the titan and ask Venomman for a VMach spring for a 95. Mach 1.5

yup.. you need 3.0 or 3.1mm wire

a titan #8 is apparently 3.3mm = way too stiff

That spring is too stiff, adding dead preload to a short spring increases stiffness.
The only real answer is to use the right spring.)

Yes, yes and yes.

By trying to persist and making the too stiff spring work, you'll keep going round in circles and then end up doing what you would have been better doing all along.

The V-Mach spring (they're calibre specific too) works very well in the 95.

Another spring that impresses in the 95 is the SFS one.

If "re-purposing" other springs, I'd very, very much like to give a TX200 Mark III spring a try in one.

And some of the thinner wired Titans, originally marketed as being for different models, will also be fine.

Having a quick look at some of the specifications of different springs on the Mainspring Data Thread in the Useful Section may help.

Hope you get sorted.

[Neil.]

Tinbum has never let me down.

[DCL_dave]

How many coils have you collapsed and will there be zero preload if you remove all but one ?

As stated in op, the spring has been chopped from 295mm down to a free length of 192mm long inc two dead/collapsed coils at either end…it has 4mm preload with spacers and slip washer on the guide…goes hot with any more preload withe the spring in its current configuration.

I was always led to believe that collapsed coils act like piston weights and can effect the power, I'd remove the end that sits in the piston and collapse a single coil, are you using any delrin top hats or slip washers?

Pete

yes, aftermarket plastic top hat, spring guide and spacers…delrin I think.

[BTDT]

yup.. you need 3.0 or 3.1mm wire

a titan #8 is apparently 3.3mm = way too stiff

If the wire is 3.3mm, the active coils just 20 then, assuming the spring OD is 20.8mm, the spring is making circa 31 ft. lb. available to the piston, and the only way to keep it legal will be to make it horribly inefficient, which 4mm of preload will do admirably.

Problem is the spring is placing a force well north of 200lbf on the piston at release, so recoil acceleration will be fierce. At the point of piston bounce, the spring will offer in the region of just 10 to 20 lbf to resist piston bounce force probably approaching half a ton, hopelessly inadequate, so mucho surge to add to the impressive recoil.

Jon's right. 3mm to at most 3.1mm wire.