Weihrauch HW 90 !

[Blackrider]

Now that Theoben are no more, what is the practical connection/involvement with regards to the 90's gas ram power plant ?
This air rifle is still being produced so who's gas ram is being used nowadays in their manufacture ?

[bighit]

Now that Theoben are no more, what is the practical connection/involvement with regards to the 90's gas ram power plant ?
This air rifle is still being produced so who's gas ram is being used nowadays in their manufacture ?

Weihrauch would be making their own I would assume .Any one could make one its just machined parts and seals. Not the sealed ram like the conversion kits .




stripped one here https://www.airrifle.co.za/threads/47205-HW90-Issues

[Blackrider]

Weihrauch would be making their own I would assume .Any one could make one its just machined parts and seals. Not the sealed ram like the conversion kits .




stripped one here https://www.airrifle.co.za/threads/47205-HW90-Issues

Yes, thats plausable, gas rams could be made by other parties right enough !
Did the HW 90 have "Theoben" stamped on the breech block side or have I maybe seen that on Theoben TB versions ?

[bighit]

Yes, thats plausable, gas rams could be made by other parties right enough !
Did the HW 90 have "Theoben" stamped on the breech block side or have I maybe seen that on Theoben TB versions ?

only the Theoben ones . I think it said HW90TB. had a look on google but can find any that say it . one on free ad's just now

.Edit





Extra hole in the breech block was for the FAC version of the HW90. It had a different piston and longer cocking link from what i'm lead to believe .

[Shed tuner]

My regular 90 has the stamped on the block.

The (30 year ?) gas ram patent expired a while ago, so anyone can make 'em now - which is probably why Gamo, Benjamin, Crosman and everyone else is doing so...

[Shed tuner]

Extra hole in the breech block was for the FAC version of the HW90. It had a different piston and longer cocking link from what i'm lead to believe .

yeah longer stroke

[robs5230]

Now that Theoben are no more, what is the practical connection/involvement with regards to the 90's gas ram power plant ?
This air rifle is still being produced so who's gas ram is being used nowadays in their manufacture ?

The 90 was developed with HW in conjunction with Theoben. The ram in the 90 though similar is a different design to the one used in Theoben's own rifles (and more reliable) and belongs to HW.
I'm 90% sure the ram design in the 90 has not changed since its introduction.
The 90 is still a current model and all spares are still available.
There have been a few variants of the 90 but only real changes have been stock design and barrel length.
The cutie out of the lot is the Euro Custom which wears a very nice stock.

[bighit]

yeah longer stroke

I read on here from Ben Taylor that they did that to got to fac levels and it was posted here. I queried it with weihrauch who then told me to read a page in the manual on how to get it to fac and it only said to pump more air in.

I then told them what Ben said here and they then asked for the serial number of the rifle.

I told them it was just a general question and they have not replied.

Is there different barrels on newer ones that only have the one hole and to get to say 20ftlbs is just a case of pumping it up

Where as the older one as you say is a longer stroke ?



It would be good to settle this .

[MartynB]

The cutie out of the lot is the Euro Custom which wears a very nice stock.

Any pics ? Or links to them

[bighit]

Any pics ? Or links to them

No its not mine and therefore i'm not wearing the dirty white socks

[Shed tuner]

I know the UK ones were around 80mm stroke - mine is. Here's a thread:

http://www.airgunbbs.com/showthread....highlight=hw90

[bighit]

I know the UK ones were around 80mm stroke - mine is. Here's a thread:

http://www.airgunbbs.com/showthread....highlight=hw90

I remember Ben saying there was Fac bits and he and Baz said they were hard to get in the UK


Baz said
"
I take it the 90 is a genuine FAC model Rustam? As a UK version over pressurised will give accuracy problems along with scope problems too
I shot a 90 with FAC parts fitted, smooth to shoot at 20ftlb with JSB Exacts, never tried it at higher power, very accurate with JSBs
Its not easy to get FAC bits here though
Baz
"


Ben said
"
Hi Rustam
Is the 90 a genuine long stroke version (cocking link pin should be at the front corner of breech block) because if it isnt it will be impacting the end of the cylinder at this power level and will do damage.
If its the standard action then 15-16 ft lbs is the max before accuracy is destroyed and thats in .22, .177 is 13-14 ft lbs max.

"

Rustam said
"
Hi Ben,
The position of the cocking link pin is where you say it should be for a FAC HW90.
What I forgot to mention earlier on is that the owner had pumped it up to 30 BAR (4 BAR over Weihrauch's recommended limit). The initial testing was done at Weihrauch's max limit of 26 BAR. At this pressure the rifle was producing about 25 ft.lbs. with H&N FTT, if I remember correctly.
I have never shot a 90 at this pressure and I noticed two things:
1) The recoil was sharp enough to slap the cheek a bit.
2) The rifle torqued anti-clockwise (say 11 o'clock) on the follow through. All previous FAC 90s had a straight back recoil.
Would any of the above indicate a problem?
Thanks.
Rustam

"
you commented on the thread also Jon .

http://www.airgunbbs.com/showthread....light=fac+Hw90


Did Weihrauch change things in the future ?

The reply I got fro Weihrauch

Dear Sir,

we refer to your e-mail of 07.03.2018 and we have read with interest that you own one of our model HW 90.
Please note page 12 of your manual (care):
Any changes may only be done by a shilled gunsmith. Please give us your serial number to work on your issue.
Best regards
i. A. Laura Büttner
--
Weihrauch & Weihrauch
Sport GmbH & Co. KG
Industriestr. 13, 97638 Mellrichstadt


And when I told them what Ben and Baz had said the reply was

Dear Sir,
we refer to your e-mail of 23.03.2018.
Please give us your serial number to work on our issue.
Best regards
Hans-H. Weihrauch
--
Weihrauch & Weihrauch
Sport GmbH & Co. KG
Industriestr. 13, 97638 Mellrichstadt

I then replied and told them I did not have the rifle and it was a general question. No Reply .

from the manual

Never dismantle the air rifle or never do a repair on the action yourself. The interior of the air rifle
is under pressure. Only a skilled gun smith may open it. Improper handling or disassembly
can cause personal injury or damage to the gun. In case of functional failure it is necessary to have
the air gun checked and repaired by this specialist or to return it to us. This applies especially to
changing washers. Use only original Weihrauch spare parts.


Email reply from Hull cartridge

"
There are not two different sets of parts for the HW90 it just depends on how much it is set by.
Which gas ram designer have you spoken too as Weihrauch are made in house.
Thanks
Tom
"
when I replied it was Ben Taylor , I got no further replies

Is Hull Cartridge advising people to over pressure their Rams?

I had asked both Weihrauch and Hull cartridge if it was possible to buy the parts to take one to 20ftlbs .

[les allam]

No its not mine and therefore i'm not wearing the dirty white socks

That's one Handsome rifle,I wouldn't mind having that gun in my collection .very nice.
Les..

[Blackrider]

That's one Handsome rifle,I wouldn't mind having that gun in my collection .very nice.
Les..

Ditto that Les, and that looks like a Long Series Silencer !

Think I'll give those socks a miss though !

[robs5230]

Ditto that Les, and that looks like a Long Series Silencer !

Think I'll give those socks a miss though !

Yes it was a long series silencer. The silencer is the nearest I've ever got to one.
These do come up periodically but fetch top wonga