Today's Message Index:
----------------------
1. 06:22 AM - IO-540 sniffle valve (Tal Holloway)
2. 10:28 AM - Re: IO-540 sniffle valve (Robert Jones)
3. 11:01 AM - Re: Magneto upgrade? (Robert Jones)
4. 01:31 PM - Re: Magneto upgrade? (Don McDonald)
Message 1
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| Subject: | IO-540 sniffle valve |
Is anyone using a horizontal fuel servo and a sniffle valve?
Go Navy, Beat Army!
Have a great day!
Tal Holloway
Message 2
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| Subject: | Re: IO-540 sniffle valve |
I am using a sniffle valve on a Lycoming 540X (290HP) built by Barrett Precision
Engines which has cold air induction. It has a forward facing Airflow Performance
FM300. Barrett provided a sniffle valve for it. I plumbed it back to the
left side of the exit air for the Showplanes cowl required for the Barrett Engine
about 2 inches aft of the back edge of the cowl. The only time fuel exits
is when I shut down a hot engine. All the fuel past the mixture cut off valve
boils out of the lines and distributor and runs down to the bottom of the intake
manifold where it exits via the sniffle valve. I put a pan under it where
I park it in the hanger so it wont stain the floor blue.
Robert Jones
702-521-1840
> On Nov 27, 2020, at 6:30 AM, Tal Holloway <whodja@gmail.com> wrote:
>
>
> Is anyone using a horizontal fuel servo and a sniffle valve?
>
> Go Navy, Beat Army!
>
> Have a great day!
>
> Tal Holloway
>
>
>
>
Message 3
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| Subject: | Re: Magneto upgrade? |
Having a magneto firing early during starting is very bad for the starter. Even
at starter speeds a magneto can generate a weak spark and cause kickback. Thats
why the right magneto is grounded out while the starter is engaged when the
engine is equipped with either a conventional magneto with an impulse coupler
and an non impulse coupled magneto or the Bendix Shower of sparks system.
I had Bendix Magnetos on my RV10 when I started flying last February. I did not
use a conventional switch, just guarded on/off switches for the P leads. As a
result I only turned on the left mag for starting to avoid kickback. I turned
the right one on after it was running. When the EMags came out for the 6 Cylinder
engines I installed one on the right so I could start on both ignition systems.
After 50 hours I installed one on the left as well. Starts are easy and
the engine still runs great at 18,000 DA. 175 knots TAS on 12 gal/hr. I might
get around to flying if higher to see what happens to performance post COVID
when I can travel more easily.
Robert Jones
702-521-1840
> On Nov 27, 2020, at 1:42 AM, Kelly McMullen <kellym@aviating.com> wrote:
>
>
> Standard setup is with impulse coupling on pilot's side. However, even if the
coupling had failed, it should still fire, early.
>
>> On 11/25/2020 4:02 PM, Phil Perry wrote:
>> And I believe it requires a magneto with an impulse coupling on the other side.
Correct?
>> Im pretty sure that is right.
>> Phil
>> Sent from my iPhone
>>>> On Nov 25, 2020, at 3:49 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>>>
>>>
>>> Sheesh, I don't know how you pass the A&P practical if you can't do basic trouble
shooting on a mag.
>>> If it won't fire with P lead disc, the problem is inside the mag, It could
be worn out points, bad condensor, damaged rotor.
>>> A bad rotor will be pretty obvious from where it the contact is made at each
plug wire. Yes, it requires taking off the main rotor cap.
>>> Slick mags have easy to get tools to verify e-gap setting.
>>> Sent from myTRS-80 Model 100
>>>
>>>
>>>> On Wed, Nov 25, 2020 at 2:33 PM Lenny Iszak <lenard@rapiddecision.com <mailto:lenard@rapiddecision.com>> wrote:
>>>
>>> <lenard@rapiddecision.com <mailto:lenard@rapiddecision.com>>
>>>
>>> Marcus,
>>>
>>> The easiest swap is the Surefly. Keep the same plugs, harness and
>>> magneto cap, and just swap in the Surefly for the mag, then
>>> install a power wire and thats it. If it ever breaks while on a
>>> trip you can always swap in a standard mag.
>>>
>>> Theres only one minor issue with it, most current EFIS systems
>>> can't read the RPM from the P-lead of the SureFly. Using a hall
>>> effect sensor in the other mag takes care of that though.
>>>
>>> Lenny
>>>
>>> > On Nov 25, 2020, at 12:13 PM, Marcus Cooper <cooprv7@yahoo.com
>>> <mailto:cooprv7@yahoo.com>> wrote:
>>> >
>>> <cooprv7@yahoo.com <mailto:cooprv7@yahoo.com>>
>>> >
>>> > During my run up to fly to meet the family for thanksgiving the
>>> left magneto was completely dead. Back to the chicks to
>>> troubleshoot where I removed the P leads in case they had grounded
>>> somehow with no effect. I spoke with 3 mechanics and all had no
>>> ideas other than replace the mag.
>>> > Ive read some sporadic news about P Mags and maybe other
>>> hybrid magnetos on the market. I dont want to go pure electronic
>>> ignition due to other battery source issues, but does anyone have
>>> any recommendations that would be a step up from a pure magneto?
>>> >
>>> > Thanks,
>>> > Marcus
>>> >
>>> >
>>> >
>>> >
>>>
>>>
>>> ==========
>>> -List" rel="noreferrer"
>>> target="_blank">http://www.matronics.com/Navigator?RV10-List
>>> ==========
>>> FORUMS -
>>> eferrer" target="_blank">http://forums.matronics.com
>>> ==========
>>> WIKI -
>>> errer" target="_blank">http://wiki.matronics.com
>>> ==========
>>> b Site -
>>> -Matt Dralle, List Admin.
>>> rel="noreferrer" target="_blank">http://www.matronics.com/contribution
>>> ==========
>>>
>>>
>>>
>
>
>
Message 4
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| Subject: | Re: Magneto upgrade? |
I also have switches for both ignitions.=C2- My engine from it's origin
was equiped with dual lightspeed ignitions.=C2- Especially with the 3 bla
de MT I always hit the starter button PRIOR to flipping the ignition switch
es. I think this is a good idea for all.=C2- Let the blades get going and
then turn on the ignition.=C2- No kickback ever.Don McDonald1,200 hours
and lovin' it.
On Friday, November 27, 2020, 01:13:01 PM CST, Robert Jones <rjones560x
l@gmail.com> wrote:
Having a magneto firing early during starting is very bad for the starter.
Even at starter speeds a magneto can generate a weak spark and cause kickba
ck. That=99s why the right magneto is grounded out while the starter
is engaged when the engine is equipped with either a conventional magneto w
ith an impulse coupler and an non impulse coupled magneto or the Bendix Sho
wer of sparks system.
I had Bendix Magnetos on my RV10 when I started flying last February. I did
not use a conventional switch, just guarded on/off switches for the P lead
s. As a result I only turned on the left mag for starting to avoid kickback
. I turned the right one on after it was running. When the EMags came out f
or the 6 Cylinder engines I installed one on the right so I could start on
both ignition systems. After 50 hours I installed one on the left as well.
Starts are easy and the engine still runs great at 18,000 DA. 175 knots TAS
on 12 gal/hr. I might get around to flying if higher to see what happens t
o performance post COVID when I can travel more easily.
Robert Jones
702-521-1840
> On Nov 27, 2020, at 1:42 AM, Kelly McMullen <kellym@aviating.com> wrote:
>
.com>
>
> Standard setup is with impulse coupling on pilot's side. However, even if
the coupling had failed, it should still fire, early.
>
>> On 11/25/2020 4:02 PM, Phil Perry wrote:
>> And I believe it requires a magneto with an impulse coupling on the othe
r side.=C2- Correct?
>> I=99m pretty sure that is right.
>> Phil
>> Sent from my iPhone
>>>> On Nov 25, 2020, at 3:49 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>>>
>>> =EF=BB
>>> Sheesh, I don't know how you pass the A&P practical if you can't do bas
ic trouble shooting on a mag.
>>> If it won't fire with P lead disc, the problem is inside the mag, It co
uld be worn out points, bad condensor, damaged rotor.
>>> A bad rotor will be pretty obvious from where it the contact is made at
each plug wire. Yes, it requires taking off the main rotor cap.
>>> Slick mags have easy to get tools to verify e-gap setting.
>>> Sent from myTRS-80 Model 100
>>>
>>>
>>>> On Wed, Nov 25, 2020 at 2:33 PM Lenny Iszak <lenard@rapiddecision.com
<mailto:lenard@rapiddecision.com>> wrote:
>>>
>>>=C2- =C2- <lenard@rapiddecision.com <mailto:lenard@rapiddecision.com
>>
>>>
>>>=C2- =C2- Marcus,
>>>
>>>=C2- =C2- The easiest swap is the Surefly. Keep the same plugs, harn
ess and
>>>=C2- =C2- magneto cap, and just swap in the Surefly for the mag, the
n
>>>=C2- =C2- install a power wire and that=99s it. If it ever bre
aks while on a
>>>=C2- =C2- trip you can always swap in a standard mag.
>>>
>>>=C2- =C2- There=99s only one minor issue with it, most current
EFIS systems
>>>=C2- =C2- can't read the RPM from the P-lead of the SureFly. Using a
hall
>>>=C2- =C2- effect sensor in the other mag takes care of that though.
>>>
>>>=C2- =C2- Lenny
>>>
>>>=C2- =C2- > On Nov 25, 2020, at 12:13 PM, Marcus Cooper <cooprv7@yah
oo.com
>>>=C2- =C2- <mailto:cooprv7@yahoo.com>> wrote:
>>>=C2- =C2- >
>>>=C2- =C2- <cooprv7@yahoo.com <mailto:cooprv7@yahoo.com>>
>>>=C2- =C2- >
>>>=C2- =C2- > During my run up to fly to meet the family for thanksgiv
ing the
>>>=C2- =C2- left magneto was completely dead. Back to the chicks to
>>>=C2- =C2- troubleshoot where I removed the P leads in case they had
grounded
>>>=C2- =C2- somehow with no effect.=C2- I spoke with 3 mechanics and
all had no
>>>=C2- =C2- ideas other than replace the mag.
>>>=C2- =C2- >=C2- I=99ve read some sporadic news about P Mags
and maybe other
>>>=C2- =C2- hybrid magnetos on the market. I don=99t want to go
pure electronic
>>>=C2- =C2- ignition due to other battery source issues, but does anyo
ne have
>>>=C2- =C2- any recommendations that would be a step up from a pure ma
gneto?
>>>=C2- =C2- >
>>>=C2- =C2- > Thanks,
>>>=C2- =C2- > Marcus
>>>=C2- =C2- >
>>>=C2- =C2- >
>>>=C2- =C2- >
>>>=C2- =C2- >
>>>
>>>
>>>=C2- =C2- ==========
>>>=C2- =C2- -List" rel="noreferrer"
>>>=C2- =C2- target="_blank">http://www.matronics.com/Navigator?RV10-
List
>>>=C2- =C2- ==========
>>>=C2- =C2- FORUMS -
>>>=C2- =C2- eferrer" target="_blank">http://forums.matronics.com
>>>=C2- =C2- ==========
>>>=C2- =C2- WIKI -
>>>=C2- =C2- errer" target="_blank">http://wiki.matronics.com
>>>=C2- =C2- ==========
>>>=C2- =C2- b Site -
>>>=C2- =C2- =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admi
n.
>>>=C2- =C2- rel="noreferrer" target="_blank">http://www.matronics.
com/contribution
>>>=C2- =C2- ==========
>>>
>>>
>>>
>
>
>
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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