So Jim, these long transfer ports as per your AGW article....

[Shed tuner]

I don't own an LGU, nor have I had a play with one.

At one point, some owners were reporting drop off of velocity due to mainspring fatigue. Many attributed this to too small a TP, leading to excessive piston bounce, causing the spring fatigue. Not sure what the final outcome was, whether it was indeed this or just a poor batch of springs?

Yeah, no change in that analysis.. port around 6mm long, needs to be around 3.2 minimum.

[bozz]

Yeah, no change in that analysis.. port around 6mm long, needs to be around 3.2 minimum.

Hi good that is what i have drilled mine out to, i was very surprised at the increase in power i had to compress a coil to get it back to 11 ft/lbs.
It just surprises my that you see a lot about Weihrauch or air arms but very little on walther tuning any idea why.
Graham

[Rickenbacker]

Because the Walther badged Umarex has only been around a few years, and it's not as good as the established HW or TX platform?

[TonyL]

Because the Walther badged Umarex has only been around a few years.......

Yes. Also the overall numbers of "high-end sporting springers" sold will be relatively low, so you'll have the Walthers competing for a slice of that market vs the more established (and trusted and known?) Weihrauch, Air Arms and Diana competition.

The prices of some of them won't have helped, either, plus the seemingly awkward parts availability. In the early days of the new LGV, it seemed to receive a bit of a slating over the finish and trigger function and variable quality (some shot beautifully whilst some twanged like the proverbial banjo on amphetamines). The "tuned from the box" image coupled to all these other factors won't encourage the aftermarket goodies suppliers to jump on that particular bandwagon.