OS 8 Plug

[Rodney Rogers]

is a os #8 plug good for rc boats and what engine ,thanks

 

[RaceMechaniX]

The #8 is a "medium" plug similar to a 287. Probably good for low nitro/sport or small 12/21 motors.

 

[Rodney Rogers]

The #8 is a "medium" plug similar to a 287. Probably good for low nitro/sport or small 12/21 motors.

thanks I found some for less than $4.00 each that's why I asked.

 

[Grimracer]

snap em up!

 

[Tom Foley]

thanks I found some for less than $4.00 each that's why I asked.

I'll buy them for my airplanes if you are selling .

 

[Rodney Rogers]

im not selling but thanks

 

[Rodney Rogers]

do you need a 91 os with pits muffler ? i have one im going to sell

 

[Tom Foley]

do you need a 91 os with pits muffler ? i have one im going to sell

No , oddly I have 3 of those ....but price , condition ?

 

[Rodney Rogers]

been sitting a while i got it new only a few flights had it on a biplane sold the plane !

 

[Rodney Rogers]

been sitting a while i got it new only a few flights had it on a biplane sold the plane !

$175

 

[Wasted wages]

The problem I have with #8 plugs is if you run too lean and the plug drops the coil, you can almost guarantee that the piston and liner is going to get scored... it like dropping a coil spring thru the motor..

I'd rather burn a #6 and be a litte safer...I think the coils vaporize as they burn up...
I've had plugs come in hollow, and not suffer any motor damage..

just an observation...

 

[Tom Foley]

$175

OK , I'll have to pass on that one . Great engines .

 

[Davidkrienke]

The problem I have with #8 plugs is if you run too lean and the plug drops the coil, you can almost guarantee that the piston and liner is going to get scored... it like dropping a coil spring thru the motor..

I'd rather burn a #6 and be a litte safer...I think the coils vaporize as they burn up...
I've had plugs come in hollow, and not suffer any motor damage..

just an observation...

That is what worries me about the rossi r5 anr rt6 there coil seems very thick. I would hate to have one of them come loose through the engine. I Have a time with the os 8 plugs seems like all the testing I do once I get my temp to 240 or so and messing with pipes they turn color and sometimes I loose a coil I guess I am running them on the ragged edge and just need to be more careful. and there expensive now best price I have found is 8 a piece on ebay .

 

[Wasted wages]

David, have you checked AL Hobbs vendor site here on IW ?
I think he is lower than 8 bucks a plug..?

 

[Davidkrienke]

David, have you checked AL Hobbs vendor site here on IW ?
I think he is lower than 8 bucks a plug..?

Well the rossi are 4.50 and 5.50 for the rt now I think. I never asked him what other brands he had if he has OS I might get some from him sometime. But for now I have 24 of these rossi plugs I will give them a good try first I guess.

 

[Tom Foley]

Well the rossi are 4.50 and 5.50 for the rt now I think. I never asked him what other brands he had if he has OS I might get some from him sometime. But for now I have 24 of these rossi plugs I will give them a good try first I guess.

Good plugs for many decades . The OS coils look fragile but do work well in airplane applications.