Buglespanner help needed

[micky]

A mate of mine is looking for an exploaded view of a Buglespanner, if anyone can help it would be very much appreciated many thanks.

Mick.

[Garvin]

Mick there's this one of a Manteuffel bugelspanner, courtesy of Frank K and pics of the springs/piston together and separate.

[aimless]

sorry, at the moment no better picture available:

http://sta.sh/021yu4x2peas

Jochen

[micky]

Many thanks Danny and Jochen for the exploaded views, l will pass this on to my mate and hope it will help him.

Regards,

Mick.

[greenwayjames]

I thought that Buglespanners used volute springs because of the lack of room for a coil spring.

[micky]

I thought that Buglespanners used volute springs because of the lack of room for a coil spring.

Hi yes they do as shown in the first reply, by Gavin.

[aimless]

The one on my picture might be modified and not original ...

[micky]

The one on my picture might be modified and not original ...

Thanks Jochen l will tell my mate.

[greenwayjames]

Hi yes they do as shown in the first reply, by Gavin.

Thanks, I didnt look at that one.

[greenwayjames]

The one on my picture might be modified and not original ...

I imagine it would be pretty difficult, read expensive, to get a replacement volute spring nowadays.

[Garvin]

I imagine it would be pretty difficult, read expensive, to get a replacement volute spring nowadays.

Surprisingly perhaps, they are still made today.

One seller of them says this:

Volute springs are preferred over normal helical springs because of their-

Superior lateral stability
Non-linearity of their load/deflection curve
Larger loads for limited space that you could not get from a helical spring

[hebhaggis]

I had occasion to chrono one once - not a .25 dart thrower but a smaller calibre pellet one ...crikey it went well - no tuning or lubing ( and having stripped a .25 years ago , it will at most have been lubed with what looks like axle grease ) ...seem to remember it was pelting out 8-9ft/lb ....with a little care and modern lubes that would increase too . The springs look pretty harmless - I nearly took my eye out when the thing went pop as I dismantled it ! Very clever system and I think there is a later system by 'PAFF' ? that used similar springs .
Surprisingly good airguns , and not all have smoothbore barrels either ....Is there any published info out there ?

[micky]

My mate is still struggling with the Bugglespanner, does anyone have a drawing or photo of the trigger layout how it works ect on of one of these as it's failing to hold on the trigger, here's hoping.
Mick.

[Garvin]

My mate is still struggling with the Bugglespanner, does anyone have a drawing or photo of the trigger layout how it works ect on of one of these as it's failing to hold on the trigger, here's hoping.
Mick.

Mick just by chance I was reading the Pyramydair blog and saw this - but the Bugelspanner being dismantled is a rare double trigger version, so presumably has a very different geometry to a single trigger one.

[micky]

Mick just by chance I was reading the Pyramydair blog and saw this - but the Bugelspanner being dismantled is a rare double trigger version, so presumably has a very different geometry to a single trigger one.

Hi Danny many thanks for the link hopefully it might help my mate, l have never seen or heard of a double trigger Bugelspanner before nice one,