A6TEXAN

i got this engine in some trade stuff. so i was gonna run it in test stand to check it out. i got to the point of starting and found the glowplug here. what was OS thinking here.
engine is an old OS 90fs. i think im gonna pass on this situation.

KeroPower

Looks like the prop just clears it. What is the problem?

w8ye

My Feedback: (16)

When this engine was designed, everyone, used a right angle glow plug connector shaped like a spring type clothes pin.

Now people use a short remote glow adapter fastened somewhere behind the engine. And that is where you connect your igniter.

A6TEXAN

do yall know how old this OS is ? also it has what appears to be a pump as part of the back plate. is it a pump ? i just couldnt believe they set this engine up like this. seems kinda dangerous for the mass.

huck1199

I think it is arround 1988

piper_chuck

My Feedback: (12)

First introduced in 1983:http://osengines.com/history/ostimeline10 The FS-91S shows up in 1988.

Two choices for dealing with the plug are an onboard glow driver or a remote connection.

spaceworm

Resulted from their design choice of putting the cam and pushrods at the rear of the engine. Likely easier to put the cam on the end of the crank rather than between the crank throw and prop drive.

Hobbsy

My Feedback: (102)

Good morning Richard, he needs some of this stuff.

http://www.sonictronics.com/xcart/home.php?cat=329

earlwb

yeah the old early version OS 4 stroke engines and the Enya 4 stroke engines all have a front angled glow plug on them like that.
You need to use a glow plug adapter or use a angled clip like they used many years ago, or a pair of aligator clips.

Here is a Enya engine glow plug adapter used so one can use our modern nicad glow ignitors on the engines. This puts the ignitor back behind the engine in a safer location.

MinnFlyer

My Feedback: (4)

I think the prevailing theory was: Put the pushrods behind the head to protect them in case of a crash. Makes sense - until you realize that most people are not going to buy a special glow clip

w8ye

My Feedback: (16)

http://www3.towerhobbies.com/cgi-bin...&I=LXBC35&P=ML

Mr Cox

Someone should tell this guy:

[youtube]http://www.youtube.com/watch?v=-xHKBIWasKg&feature=results_main&playnext=1&list=PL701B8B194D499D87[/youtube]

NM2K

My Feedback: (14)

There were more of this version of an OS 15cc four-stroke flying at our club field in the early nineties than there were front pushrod engines. They ran fine, made adequate power and had an endearing miss at high throttle, just like the Enya four-strokes they emulated.


Ed Cregger

Roary m

My Feedback: (67)

They have a great sound, a little different than the Surpass. I have one in a VQ Hurricane with a 13/8 TF wood prop. I need to slow him down though.

Maxam

My Feedback: (62)

This 90 is actually a fine engine. Many great four cycles had the plug in front.

the pope

Its only a little engine . It wouldnt cause MUCH damage . Cheers the pope

Broken Wings

My Feedback: (20)

I've got one of the FS-90 engines. I really like it a lot. I use an old GloBee Fire plug and a regular Sullivan glow plug clip.

It idles so slow that I just reach in and disconnect the glow plug clip before the other propeller blade has time to come around....

bob62

My Feedback: (28)

Put it on a plane and sell it to me

jaka

Hi!
What to say!
What a fool!!!

747pilot

My Feedback: (4)

I got int rc back in 1984. Grew to love and own many of the .40 fp. Maybe my eyesight is going but for the life of me I cant find it at that website below. When did the 40 Fp show up on scene?

bob62

My Feedback: (28)

Engine is a 90 not a 40