Today's Message Index:
----------------------
1. 03:02 AM - Yak 18T Batteries (Anthony Hudacek)
2. 08:30 AM - Gearbox "window" (Richard Goode)
3. 08:51 AM - Re: Gearbox "window" (A. Dennis Savarese)
4. 09:49 AM - Re: Yak 18T Batteries (Jon Boede)
5. 01:28 PM - M462RF (George Coy)
Message 1
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| Subject: | Yak 18T Batteries |
My 18T is now close to flying after a rather extensive refurb and I noticed
today that the battery box is missing. Does anyone have pics and dimension
s of the box or perhaps a suitable mod to use different batteries. Has anyo
ne cut off the original connectors and soldered on new ones to suit the new
battery type? And how are the batteries held in place?=0A-=0AAlso does a
nyone know where I can buy the chrome storm window surrounds or even have t
hem made, mine are really rusted.=0A-=0AMany thanks,=0A-=0ARegards Ant
down under.
Message 2
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| Subject: | Gearbox "window" |
To set the record straight:
=D8 The idea of the =93window=94 was not to be able to inspect the
gearbox in
use, but was developed by Sergio Dallan in Italy as part of his oil
shut-off
system.
=D8 So there was a valve on the oil supply preventing oil coming down
to the
engine, controlled through a small door in the cowling, with a safety
back-up in the form of a =93barbers pole=94 and a light in the cockpit.
=D8 Then, in order to stop any oil that might be in the crank shaft
draining
down to the cylinders, there was a white mark in the gearbox, visible
through the =93window=94 and when the mark lined up, then the crank
shaft was in
its highest position, and so oil would not drain down into it and then
into
the cylinders.
=D8 Sergio made a few, and indeed we fitted them to several Sukhois.
Generally worked well.
=D8 As I recollect it was simply a thick Perspex disc, with a metal
reinforcement around the rim, using the same three bolt holes as the
existing metal cover.
=D8 In passing the existence of the cover is an easy way to identify a
Series
2 engine.
Richard Goode
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
<http://www.russianaeros.com> www.russianaeros.com
Message 3
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| Subject: | Re: Gearbox "window" |
Thanks for clearing things up Richard.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 10/4/2011 10:26 AM, Richard Goode wrote:
>
> To set the record straight:
>
> The idea of the window was not to be able to inspect the gearbox in
> use, but was developed by Sergio Dallan in Italy as part of his oil
> shut-off system.
>
> So there was a valve on the oil supply preventing oil coming down to
> the engine, controlled through a small door in the cowling, with a
> safety back-up in the form of a barbers pole and a light in the
> cockpit.
>
> Then, in order to stop any oil that might be in the crank shaft
> draining down to the cylinders, there was a white mark in the gearbox,
> visible through the window and when the mark lined up, then the
> crank shaft was in its highest position, and so oil would not drain
> down into it and then into the cylinders.
>
> Sergio made a few, and indeed we fitted them to several Sukhois.
> Generally worked well.
>
> As I recollect it was simply a thick Perspex disc, with a metal
> reinforcement around the rim, using the same three bolt holes as the
> existing metal cover.
>
> In passing the existence of the cover is an easy way to identify a
> Series 2 engine.
>
> Richard Goode
>
> Richard Goode Aerobatics
>
> Rhodds Farm
>
> Lyonshall
>
> Herefordshire
>
> HR5 3LW
>
> United Kingdom
>
> Tel: +44 (0) 1544 340120
>
> Fax: +44 (0) 1544 340129
>
> www.russianaeros.com <http://www.russianaeros.com>
>
> *
>
>
> *
Message 4
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| Subject: | Yak 18T Batteries |
If the 18T uses the same battery box as a lot of other Russian stuff... whi
ch is to say the SAM-28 batteries... take a look at how Oddessy PC-925 batt
eries might fit in your box. We've used them in a variety of things and th
ey fit perfectly... you just have to go to a welding shop and have the copp
er cable to put them in series made up out of some thick wire. Golf cart s
hops can make them=2C too.
Jon
From: antdea2000@yahoo.com.au
Subject: Yak-List: Yak 18T Batteries
My 18T is now close to flying after a rather extensive refurb and I noticed
today that the battery box is missing. Does anyone have pics and dimension
s of the box or perhaps a suitable mod to use different batteries. Has anyo
ne cut off the original connectors and soldered on new ones to suit the new
battery type? And how are the batteries held in place?
Also does anyone know where I can buy the chrome storm window surrounds or
even have them made=2C mine are really rusted.
Many thanks=2C
Regards Ant down under.
Message 5
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I was speaking to Doug Sapp today and he was looking for a manual for th
M462F engine. I remembered that I have one in English. I am going to make a
copy for him. If anyone else wants one let me know and have Staples run off
some more. It is about 85 pages and several are fold out 11 x 17 size with
the diagrams, so it will be about $45 or so per copy.
I may have the manuals for the V520 propeller as well.
I know I have copies of all the service bulletins for the Z37, V520 and
M462RF in Czech language as well.
There was a woman from China on the list offering parts for the CJ and
Housai engines. I would like to contact her about making exhaust valves for
the M14P.
George Coy
CAS Ltd.
714 Airport Rd.
Swanton VT 05488
802-868-5633 off
802-363-5782 cell
802-868-4465 Fax
george.coy@gmail.com
http://coyafct.com/
SKYPE george.coy
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Walter Lannon
Sent: Sunday, October 02, 2011 11:34 PM
Subject: Re: Yak-List: M462RF
Didier;
Further to Doug's post I believe the prop shaft on the MR462 engine is a
Western standard SAE 20 spline.
I have not yet confirmed that observation. It is at this time just that -
an observation.
If correct the only readily available Western propellor would be the
Hamilton Standard 2B20.
However there should be Avia Propellor models in the Czech Republic designed
for that engine.
Cheers;
Walt
----- Original Message -----
From: doug sapp <mailto:dougsappllc@gmail.com>
Sent: Saturday, October 01, 2011 5:26 PM
Subject: Re: Yak-List: M462RF
Didier,
Please contact me off list, I have several of these motors.
I think MTV9 requires a flanged crank shaft, the M462RF is a splinded shaft
motor. The spline being slightly larger in dia than that used on the HS6A
285 hp engine.
Best,
Doug Sapp
On Sat, Oct 1, 2011 at 3:50 PM, Didier Blouzard <didier.blouzard@gmail.com>
wrote:
Oh dear LIST
does anyone on this LIST know where I can find spare parts and technical
data for a M462RF motor.
I need a tach generator, a cover for the rear shaft and probably a blade
unless the MTV9 can be mounted on the shaft which I doubt.
Pictures of my motor can be found here :
https://picasaweb.google.com/106676445988268949228/Moteur?authuser=0
<https://picasaweb.google.com/106676445988268949228/Moteur?authuser=0&feat=d
irectlink> &feat=directlink
Any hints contact or technical data in order to put that motor back into
operation would be greatly appreciated.
Thank you LIST
--
Didier BLOUZARD
didier.blouzard@gmail.com
0624243672
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