Std. 2 Jantar - CG Tost hook?

[[email protected]]

The manual mentions that a CG hook can be mounted on the landing gear. Does anyone have instructions from the factory on that process?
Thanks
Phil

[Frank Whiteley]

On Saturday, November 25, 2017 at 6:03:44 PM UTC-7, wrote:
> The manual mentions that a CG hook can be mounted on the landing gear. Does anyone have instructions from the factory on that process?
> Thanks
> Phil

Can't comment on that approach. I had a share of a Jantar Std 2 in the UK several years ago. It would back release at about 700agl during a winch launch. The BGA senior inspector rotated the hook 2-3 holes. After that it went to the top of the launch.

Frank Whiteley

[[email protected]]

That’s an interesting approach to the problem. I mounted a Tost hook on the landing gear of my HP18 and that worked great. Since this is a certified aircraft I’ll have to check with our AME. I anticipate that the factory will have the mounting info given it was an option. Thanks for input.
Phil

[Justin Couch]

On Sunday, 26 November 2017 12:03:44 UTC+11, wrote:
> The manual mentions that a CG hook can be mounted on the landing gear. Does anyone have instructions from the factory on that process?
> Thanks
> Phil

It is basically a mount already welded into the gear and two bolts through it. The cable is a separate item off the main pulley below the instrument panel. Inside the seat pan area, you need a large rounded cutout to allow it to swing up with the undercarriage. Typically there is a FRP piece that is bonded into the fuselage to cover the hole. All the Jantars I have seen had this built in from the factory, but it may have been optional if yours never came with the CG hook. I should be able to find the right TOST part number. Do already have a hook and just need to know all the fittings?

Also, I recommend you join up the Jantar group over on Yahoo as there's a lot of drawings and useful paperwork there.

[David Salmon[_3_]]

At 01:03 26 November 2017, wrote:
>The manual mentions that a CG hook can be mounted on the landing gear.
Does
>anyone have instructions from the factory on that process?
>Thanks
>Phil
>
A long time ago I had a 19m Jantar, and was interested in the same thing.
It did not back release, just started to pitch up and down. I did obtain
some pictures of one in Ireland that had the modification of a hook welded
to the u/c, though I never got round to doing it. I'll have a search round
to see if I've still got them, this was pre-computer storage. Even before
that there was a Std Jantar on site, that may have been modified, one of
the partners in that is one of my partners now in a DG500, so I'll ask
him.
Dave

[Eric Munk]

It’s a G72 according to the TCDS from EASA, but a G73 or G88 is also
technically speaking compatible. I am rebuilding one that has a CoG release

so if you need pics send an email...



t 08:18 26 November 2017, Justin Couch wrote:
>On Sunday, 26 November 2017 12:03:44 UTC+11, wrote:
>> The manual mentions that a CG hook can be mounted on the landing
gear.
>Do=
>es anyone have instructions from the factory on that process?
>> Thanks=20
>> Phil
>
>It is basically a mount already welded into the gear and two bolts
through
>=
>it. The cable is a separate item off the main pulley below the instrument
>p=
>anel. Inside the seat pan area, you need a large rounded cutout to allow
>it=
> to swing up with the undercarriage. Typically there is a FRP piece that
>is=
> bonded into the fuselage to cover the hole. All the Jantars I have seen
>ha=
>d this built in from the factory, but it may have been optional if yours
>ne=
>ver came with the CG hook. I should be able to find the right TOST part
>num=
>ber. Do already have a hook and just need to know all the fittings?=20
>
>Also, I recommend you join up the Jantar group over on Yahoo as there's a
>l=
>ot of drawings and useful paperwork there.
>

[David Salmon[_3_]]

At 07:39 28 November 2017, Eric Munk wrote:
>It’s a G72 according to the TCDS from EASA, but a G73 or G88 is also
>technically speaking compatible. I am rebuilding one that has a CoG
releas
>
>so if you need pics send an email...
>
>
>
>t 08:18 26 November 2017, Justin Couch wrote:
>>On Sunday, 26 November 2017 12:03:44 UTC+11, wrote:
>>> The manual mentions that a CG hook can be mounted on the landing
>gear.
>>Do=
>>es anyone have instructions from the factory on that process?
>>> Thanks=20
>>> Phil
>>
>>It is basically a mount already welded into the gear and two bolt
>through
>>=
>>it. The cable is a separate item off the main pulley below the
instrument
>>p=
>>anel. Inside the seat pan area, you need a large rounded cutout to allow
>>it=
>> to swing up with the undercarriage. Typically there is a FRP piece that
>>is=
>> bonded into the fuselage to cover the hole. All the Jantars I have seen
>>ha=
>>d this built in from the factory, but it may have been optional if yours
>>ne=
>>ver came with the CG hook. I should be able to find the right TOST part
>>num=
>>ber. Do already have a hook and just need to know all the fittings?=20
>>
>>Also, I recommend you join up the Jantar group over on Yahoo as there's
a
>>l=
>>ot of drawings and useful paperwork there.
>>
>
>My syndicate partner has just confirmed that they fitted a c of g hook to
their Std Jantar, by buying a new u/c frame with a hook on it. That of
course was from the original manufacturers 40 years ago.
Dave