Mainspring data thread

[Shed tuner]

I stuck a number 1 Titan in my .177 Diana 52 and it made 17 ft lb. I had to cut 3 whole coils off it to get 11.4 ft lb

Bloomin stiff spring

I'll be interested to hear how it goes john and how many coils you end up lopping off

Matty

hmmm... chopping is easy, but I don't want it too stiff... it looked less stiff than the #9 (more coils, same len), and the #9 is meant for a mk2. Maybe I should try the #10 but it looks too thin wire and possibly a bit short

Is the #1 really stiff, or just too long ?

[airborn68]

Hi all

Just thought I would add this to the mix.

One of the guys I shoot against is running a titan No7 in his tx with good results.
I shot it & it felt very fast but a little harsh for my liking, all other internal details he seems reluctant to divulge.
Have any of you tried one before I waste my money.

Regards Jon

[airborn68]

I tried the 9 in my set up & it made power very easily, so much so I had to cut a few coils off.

With minimal top hat the spring has only 5mm preload which gives me 11.2-11.3 f/lb.( also gets a bit stiff to cock towards the end but not excessive )

The number 10 had 47mm preload to make 11.2f/lb

Jon

[NickG]

I use the No 9 and the Mk2 in my guns depending on stroke, the No 9 is good and makes power easily but is a bit stiff to cock, I would like something in between ideally

[airborn68]

Nick

I was a bit concerned that with so little preload that it would not keep the bounce in check, but it seems to shoot fine @ 25 yards, of to test it out to 55 this morning.

Jon.

[NickG]

Nick

I was a bit concerned that with so little preload that it would not keep the bounce in check, but it seems to shoot fine @ 25 yards, of to test it out to 55 this morning.

Jon.

Mine( TX200) has a very light piston, and that does not bounce with the No 9, I do have a bit more spring room than standard though.