OS #8 Glow Plugs
Tim Barron
I've been having some fairly poor performance out of my Thunder Tiger Pro-60
for the past year. A couple of months ago, I gave up on the Thunder Tiger
Carb, and replaced it with an OS carb. Things improved tremendously, but
still not perfect (mostly, midrange transition problems). Today, I installed
an OS #8 glow plug, and the engine ran like a bat-out-of-hell. It was even
able to pull my Trainer 60 vertical! Although they are somewhat pricey (I was
previously using its less expensive brother, the OS A3 plug), they certainly
seem to be worth the cost.
Tim Barron
Vince
Just think what it would fly like if you had an OS 60.
--
Vince
There's something happening here
What it is ain't exactly clear
Buffalo Springfield 1969
Dennis Collin
Vince <aur...@iamerica.net> wrote:
>>Today, I installed
>> an OS #8 glow plug, and the engine ran like a bat-out-of-hell. It was even
>> able to pull my Trainer 60 vertical! Although they are somewhat pricey (I was
>> previously using its less expensive brother, the OS A3 plug), they certainly
>> seem to be worth the cost.
>>
>> Tim Barron
I think you'll also find that they last a lot longer ... when that's
factored in, the OS #8 gives me better value than the crummy Fox plugs
I was using ... unit price ain't everything.
Howard Sullivan
trba...@why.net (Tim Barron) wrote:
>I've been having some fairly poor performance out of my Thunder Tiger Pro-60
>for the past year. A couple of months ago, I gave up on the Thunder Tiger
>Carb, and replaced it with an OS carb. Things improved tremendously, but
>still not perfect (mostly, midrange transition problems). Today, I installed
>an OS #8 glow plug, and the engine ran like a bat-out-of-hell. It was even
>able to pull my Trainer 60 vertical! Although they are somewhat pricey (I was
>previously using its less expensive brother, the OS A3 plug), they certainly
>seem to be worth the cost.
> Tim Barron
Since these plugs are so pricy, what is a suitable substitute? I have
a Thunder Tiger Pro46.
Rick Taylor
On 2/22/97 7:53PM, in message <5eo0ub$o...@camel1.mindspring.com>, Howard
Sullivan <hlsu...@mindspring.com> wrote:
I have a TT pro-46, started flying it last spring on 10% morgan fuel and fox
plugs. The engine ran ok the first 5 flights, but on the sixth flight when the
engine would unload after takeoff it would die. The engine wouldn't hold full
throttle, no tank foaming, and the mixture wasn't lean. Replace the plug and
it was ok for another 5. The bad plugs were gas tight, but wouldn't sustain
full throttle operation (the engine running on the rich side). Tried K&B plug
and would only get 3 flights...
Went to a #8 and now I get 50+ runs per flight. After this I went to #8's on
all my planes and my engines will idle much better on the 8s (although it
didn't take log to realize that I was landing shorter with the lower idle
speed).
I agree that the 8 is a pricey plug. For my applications, I will use the #8
until something better comes along. I believe the extra cost is due to the
heaver platinum element of the 8. I believe that this higher compression
engine is harder on plugs than most engines, but the extra performance is worth
the extra cost (my opinion).
--
Rick Taylor
Erik Sollie
Tim Barron wrote:
>
> I've been having some fairly poor performance out of my Thunder Tiger Pro-60
> for the past year. A couple of months ago, I gave up on the Thunder Tiger
> Carb, and replaced it with an OS carb. Things improved tremendously, but
> still not perfect (mostly, midrange transition problems). Today, I installed
> an OS #8 glow plug, and the engine ran like a bat-out-of-hell. It was even
> able to pull my Trainer 60 vertical! Although they are somewhat pricey (I was
> previously using its less expensive brother, the OS A3 plug), they certainly
> seem to be worth the cost.
>
> Tim Barron
What probably happend is that you found a plug that fits your
engine better.
The OS #8 i slightly colder than #3 - you see?
Check out OS homepage at:
http://www.hobbies.net/os/accys/glowplugs.html
John L Ferrell
Tim Barron wrote:
Although they are somewhat pricey (I was
> previously using its less expensive brother, the OS A3 plug), they certainly
> seem to be worth the cost.
>
> Tim Barron
I once had an Enya #3 last 132 flights in an OS61 pumped but it is about
the same cost & performance as an OS8. The next best thing is a K&B 1L
at about $3. The more expensive plugs do last longer as long as they are
not run lean or more than 15% nitro. I have not tried an OS A3.
--
John Ferrell in Julian NC, aka W8CCW
JShaw16840
Try the K&B HP plugs. At $3.50 ea. they have worked like a charm for
me.JIMSHAW
BBrastad
Used to use OS #8s a lot, but found that K&B 1L plugs work as well if not
better at half the price.
Tim Barron
In article <19970224112...@ladder02.news.aol.com>, bbra...@aol.com (BBrastad) wrote:
>Used to use OS #8s a lot, but found that K&B 1L plugs work as well if not
>better at half the price.
I've tried them, and found that they did not operate nearly as well as the OS
A3, and far worse than the OS #8.
Tim Barron (originally posted message)
Dave Tatosian
In article <N.022397....@jc026.socketis.net>,
r...@sockets.net (Rick Taylor) wrote:
>I have a TT pro-46, started flying it last spring on 10% morgan fuel and fox
>plugs. The engine ran ok the first 5 flights, but on the sixth flight when
>the engine would unload after takeoff it would die. The engine wouldn't
>hold full throttle, no tank foaming, and the mixture wasn't lean. Replace
>the plug and it was ok for another 5. The bad plugs were gas tight, but
>wouldn't sustain full throttle operation (the engine running on the rich
>side). Tried K&B plug and would only get 3 flights...
>
>Went to a #8 and now I get 50+ runs per flight. After this I went to #8's on
>all my planes and my engines will idle much better on the 8s (although it
>didn't take log to realize that I was landing shorter with the lower idle
>speed).
Something sure sounds desperately wrong with the engine/tuning/vibration/prop
used/whatever to be eating plugs at that rate. Going to a heavier wire is
covering up a problem - and it isn't the "high compression"...
We ran a TT Pro 46 and a TT Pro 40 from April 'til the snow started falling
with a single KB-1L (non idle-bar) plug on each. Lovely idle, beau coup power,
no flameouts. We'll start the new season with the same plugs (which have at
least 100 flights on each) and keep flying on...
Cheers!
/dave
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Disclaimer: Opinion and content is mine alone, and unlikely to be
shared by my employer, etc...
Mark Czekaj
Tim Barron wrote:
>
> I've been having some fairly poor performance out of my Thunder Tiger Pro-60
> for the past year. A couple of months ago, I gave up on the Thunder Tiger
> Carb, and replaced it with an OS carb. Things improved tremendously, but
> still not perfect (mostly, midrange transition problems). Today, I installed
> an OS #8 glow plug, and the engine ran like a bat-out-of-hell. It was even
> previously using its less expensive brother, the OS A3 plug), they certainly
> seem to be worth the cost.
>
flameouts after takeoff. I was careful not to run too lean but would
still burn out glow plugs after four flights or so. I switched to an
O.S. #8 and had different engine on my hands. No more flameouts and the
glowplug is 2 years old and still going strong. Best dollars I ever
spent>
Mark
James Thompson
haven't determined any perfromance meterics for myself but would be
interested in other thoughts. Thanks
Iskandar Taib
In article <N.022397....@jc026.socketis.net>,
Rick Taylor <r...@sockets.net> wrote:
>Went to a #8 and now I get 50+ runs per flight.
How do you manage to fill the tank and flip the prop in mid-air?
Bought a few #8s at a swap meet for $1 apiece (^_-)
--
-------------------------------------------------------------------------------
Iskandar Taib | The only thing worse than Peach ala
Internet: nt...@copper.ucs.indiana.edu | Frog is Frog ala Peach
Home page: http://bigwig.geology.indiana.edu/iskandar/isk2.html