Mainspring data thread

[bigtoe01]

posted this in the other thread...will place it here also

Titan springs grouped by wire size.

[CODE]

Model # OD ID Wire Coils Length
TS001 21 14.5 3.25 31 280
TS003 20.8 14.73 3.26 34 304
TS009 21.35 14.75 3.3 27 280
TS010 21 14.8 3.1 27 230


TS005 19 13.19 3 32 290
TS006 19 13.3 2.92 39 341
TS007 20 13.8 3.3 30 255
TS008 20 13.8 3.3 34 295
TS011 18.8 12.8 3 31 230


TS002 22.7 15.5 3.65 30 291
TS004 22.62 15.64 3.65 28 252
TS012 22.8 15.6 3.65 41 410

[/CODE]

[TonyL]

Thank you tone. You're a star.

[bigtoe01]

I like this spring..a LOT, if Walther will push LGV spares into the UK I for see this spring being used in many project guns.

Specs are:

236mm long, 3.35mm wire, 20.8mm OD, 14.4mm ID, 3.96mm between coils, 33 coils.

If the rifle you are tuning is optimised this spring will deliver 11fpe in .177 with ease with just 34CC of swept volume and the shot cycle is supreme. Its a soft spring due to the 33 coils but packs a nice punch.

Titan should make a copy of this one

[BTDT]

I think this thread could be even more useful if people post the spring specifications (and where people can obtain one) that suited a particular gun, and put the year, model and calibre of gun in the thread title.

[4end]

I think this thread could be even more useful if people post the spring specifications (and where people can obtain one) that suited a particular gun, and put the year, model and calibre of gun in the thread title.

Spring recommendations for specific guns are not always the best option. Several springs may be recommended for a gun but what is reguired is one that is the best fit inside the piston. If there is too much gap between the piston and spring a severe twang can be the result so beware and always measure the piston inner diameter before ordering a spring.

[BTDT]

Spring recommendations for specific guns are not always the best option. Several springs may be recommended for a gun but what is reguired is one that is the best fit inside the piston. If there is too much gap between the piston and spring a severe twang can be the result so beware and always measure the piston inner diameter before ordering a spring.

I credit the members of the BBS with enough intelligence not to recommend a spring as being suitable for a particular rifle if it caused a 'severe twang'.

[DoctorBoudreau]

I like this spring..a LOT, if Walther will push LGV spares into the UK I for see this spring being used in many project guns.

Specs are:

236mm long, 3.35mm wire, 20.8mm OD, 14.4mm ID, 3.96mm between coils, 33 coils.

If the rifle you are tuning is optimised this spring will deliver 11fpe in .177 with ease with just 34CC of swept volume and the shot cycle is supreme. Its a soft spring due to the 33 coils but packs a nice punch.

Titan should make a copy of this one

Re-reading this statement Tony... define 'optimised' here. I think you said it didn't work well in a TX. Just not enough room in that gun to pre-load it properly? What kind of rifle would it be good for? I ordered one of the 16J kits from Germany and I'm going to test the piston in my TX but would like to hang onto the spring if there is a good use-case for it. Maybe an HW95 at 12fpe? At 34CC would a .22 be best?

[DoctorBoudreau]

I currently have the QX4600 - in a gun with Mk1 stroke it's up near 11.7 ft lbs with no top hat and no spacers....just custom guide. So there really is no spacing option. It would be nice to be able to adjust pre-load some more...I can't go up with this one. The piston is lightened as well.

Here are some other Maccari springs that I can easily source here in the U.S. (some may not fit the TX factory guides though and will need custom ones):

QX4600 spring 32 coils x.120" wire - ID .560 set
http://www.airrifleheadquarters.com/...88/7905117.htm

R6 Ultra XLD spring 30 coils x .120" with .530 ID
http://www.airrifleheadquarters.com/...88/1979288.htm

E9870 Euro Universal spring 39 coils x .120" wire 480" ID - 13" OAL
http://www.airrifleheadquarters.com/...88/6825218.htm

E8700 mini spring .105 wire, 29 coils, ID .555" 10" OAL
http://www.airrifleheadquarters.com/...88/5730289.htm

Merlin XL spring - Square wire, figure it at .116" average, .509 inch ID., 37 coils and 12.2" plus unset.
http://www.airrifleheadquarters.com/...88/4452198.htm

E3200 spring 32 coils, .110 wire, ID .540 inch - Unset 12" OAL
http://www.airrifleheadquarters.com/...88/7908088.htm

Merlin Mini Mag spring 29 coils x .110 round wire x .545 ID
http://www.airrifleheadquarters.com/...88/9682441.htm

[hmangphilly]

posted this in the other thread...will place it here also

Titan springs grouped by wire size.

[CODE]

Model # OD ID Wire Coils Length
TS001 21 14.5 3.25 31 280
TS003 20.8 14.73 3.26 34 304
TS009 21.35 14.75 3.3 27 280
TS010 21 14.8 3.1 27 230


TS005 19 13.19 3 32 290
TS006 19 13.3 2.92 39 341
TS007 20 13.8 3.3 30 255
TS008 20 13.8 3.3 34 295
TS011 18.8 12.8 3 31 230


TS002 22.7 15.5 3.65 30 291
TS004 22.62 15.64 3.65 28 252
TS012 22.8 15.6 3.65 41 410

[/CODE]

Got this off a bagnall and kirkwood listing



Model Outer (mm) Inner (mm) Thickness (mm) No. Coils (mm) Length (mm)
No. 1 21 14.5 3.25 31 280
No. 2 22.7 15.5 3.65 30 291
No. 3 20.8 14.73 3.26 34 304
No. 4 22.62 15.64 3.65 28 252
No. 5 19 13.19 3 32 290
No. 6 19.7 13.3 2.92 39 341
No. 7 20 13.8 3.3 30 255
No. 8 20 13.8 3.3 34 295
No. 9 21 14.75 3.3 27 280
No. 10 21 14.8 3.1 27 230
No. 11 18.8 12.8 3 31 230
No. 12 18.912.6 2.9 36 295
No.13 19.4 13 3.1 39 340

No.14 22.7 15.4 4.12 37 356

No.15 17.53 12.1 3 33 254
Hatsan 19.55 13.4 3.0 37 310mm

5/25 12.5 9.5 1.6 28 240mm

[hmangphilly]

grr spent ages getting those spaces too

[TonyL]

Thank you for that updated information.

[look no hands]

Got this off a bagnall and kirkwood listing



Model Outer (mm) Inner (mm) Thickness (mm) No. Coils (mm) Length (mm)

No. 12 18.9 12.6 2.9 36 295

Not sure where you got those figures from but the other Titan listings says different as well as the Bagnall and Kirkwood site.

http://bagnallandkirkwood.co.uk/prod...un-mainsprings



Pete

[hmangphilly]

Not sure where you got those figures from but the other Titan listings says different as well as the Bagnall and Kirkwood site.

http://bagnallandkirkwood.co.uk/prod...un-mainsprings



Pete

That website info is wrong

Those other figures taken from their e b ay listing .

I promise you a no 12 is not 22.8 od and 3.65 mm
It's just under 19 od and 2.9

Don't know about the others but the figs I posted are a copy paste from the auction site listing .
I know they look Mickey Mouse and home made but that's just how they came out of my laptop.

If any one knows how to screen shot that page and put it up it might Have more credibility.

[look no hands]

That website info is wrong

Those other figures taken from their e b ay listing .

I promise you a no 12 is not 22.8 od and 3.65 mm
It's just under 19 od and 2.9

Don't know about the others but the figs I posted are a copy paste from the auction site listing .
I know they look Mickey Mouse and home made but that's just how they came out of my laptop.

If any one knows how to screen shot that page and put it up it might Have more credibility.

That's interesting as I need a longer spring with the same figures as no11 and the no12 would be almost perfect, I have a Welsh Willy tuning kit in my short stroke project rifle I'm doing at the moment and I know he uses Titan springs, I measured the original spring that came in the kit and the figures where the same as a no11, so I bought another no11 spring hoping it would be longer but the new spring is exactly the same length (even though the figures in the list said it was longer), now if the figures for a no12 spring are as you say then that is going to be a longer spring which will help with upping the power, I think I'll go measure the no11's length and see if it's under 295 (just in case the figures in the list is wrong) and then go from there.

Many thanks for the info.

Pete

PS just measured the no11 spring I have and that comes out at 235mm, the list says 230, so even that bit of info is wrong.

[hmangphilly]

Yep got a brand new , no 12 here that measures 305 compared with the list at 295 and a no 6 that measures 345 compared with the list at 341

i think production tolerances come into play here . IT might be sensible to give some latitude to the quoted numbers.

Of course the makers can control the gauge of wire that they use , so the listed size for that should be pretty close ( to give wire sizes down to 0.01mm seams a bit daft though ), the no of coils would be within their control too.

They would probably be affected by manufacturing tolerances on OD , ID and length, although i agree it's curious how they come to od vs id numbers that don't correspond to 2 x wire thickness .....

I cant answer that and It's a bit of a fudge to say that the figures should be taken as approximate. That is how i use them .

These are not my figures . I found them on the listing . I have been using them as approx rather than absolutely perfect , and they have served me adequately so far.

The main reason for posting these numbers was to highlight the error about the no 12 dimensions in the original list .
I had "spoken " to 2 experienced tuners who were both ignoring the 12 because they were using the incorrect numbers in the original table .