Today's Message Index:
----------------------
1. 11:05 AM - Re: CJ6A tach generator, cleaning? (rolif6)
2. 02:48 PM - Re: Re: Yak-18T main LG shocks air/oil filling procedure (michael@wikstrom.cc)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: CJ6A tach generator, cleaning? |
When it comes to maintaining the efficiency of tach generators, regular cleaning
is essential. A tach generator, which measures the rotational speed of a shaft,
can accumulate dust and debris over time, potentially affecting its accuracy.
To ensure optimal performance, it's important to follow a cleaning routine
that includes gently wiping down the generator with a soft, lint-free cloth and
using compressed air to remove any particulate matter from hard-to-reach areas.
As Dana (https://surfacekingz.com/) emphasizes, keeping the tach generator
clean helps prevent inaccuracies and prolongs the life of the equipment, ensuring
reliable performance in various industrial applications.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513741#513741
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Yak-18T main LG shocks air/oil filling procedure |
Hi Vic,
Thanks for your recent input on my shock issues.
I've checked the main gear pressure, both bottom and top.
The bottom part has 65 kg/cm2 and the top part has 18 kg/cm2
The front shock has bottom 70 Kg/cm2 and top has 20 K/cm2 - This shock
works fine.
I've not checked for oil yet.
What I don't understand is, with the aircraft empty (60L+60L fuel) with
no-one inside, the main gear shocks are half compressed, and she is
sitting statically at quite an angle, to the rear.
If I measure the ''shiny'' part of the shock, which when on jacks,
measure 290mm, goes down to about 200mm when the jacks are removed.
If I fill up fuel and put 2 persons inside, the shocks compress almost
completely.
What I'm wondering is, that as my aircraft is an earlier model yak18t
(1979), maybe I'm, using the wrong pressure settings? Maybe the top
part should have higher than 18 Kg/cm2?
I got the readings from the only yak18t description manual that I have.
Vic, can you confirm that it is pressure in the top part that determine
the static position of the aircraft?
Note that I have no visible oil leaks, and no pressure leaks either
Thanks for any input that might help
Michael Wikstrom
Yak18T - F-HMSS
On 2024-07-09 16:59, Vic wrote:
>
> Hi Michael,
> there are two places for pressurizing the lg struts: You checked the bottom filling
valve but that is just for extra hard landings when a second piston gets
active, which is sitting in the top of the hard chromed inner telescope. This
filling does nothing for the standing height. Look way up at the painted outer
section of the lg strut, there is another filling valve next to the brake hose,
see photo below. There you can add oil or change it by fully compressing
the strut to get old oil out. Dont know about the amount of oil but you found
some numbers. Anyway, at the top filling valve you can add some more air, nitrogen
no real argument. But dont do excessive pressure, it would give you a harsh
ride. Id want some angle in the brackets that align the wheels for parallel
tracks.
> In case you disassemble the whole landing gear Id suggest to bin these old felt
seals at bottom , they collect a mass of dirt and lead that into the strut
and destroy bushes and hard chrome. Better have real dirt wiper seals there, like
on motor bike teles, saves you precious hard chrome restoration costs.
>
> cheers
> Vic
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=513682#513682
>
> Attachments:
>
> http://forums.matronics.com//files/p1040077_352.jpg
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|