Sirio flywheel help

[TomMoorehouse]

does anyone know what flywheel/collet works with these sirio engines. the crank is not completely threaded like the other ones i've seen are.

View attachment 1523

 

[TomMoorehouse]

another

View attachment 1524

 

[Watercadet]

Tom when I used to work at the LHS every Sirio box had a collet in it. It is nothing different just a unique I.D.. I am hoping that the motor you have was not obsconded of it's collet!

 

[Ron Olson]

There should be a spacer that goes on between the block and flywheel. It's identical to those used on plane engines behing the props. It looks like the cone-shaped collet is missing also. Most of these parts are interchangable. My Fantoms and other motors are pretty much like this and I would assume that the unthreaded part of the crank has a flat spot on it.

 

[nitrotoys]

That tapered cone. Kinda helps flywheel stay on and tight when you tighten nut at end. I would see about getting a cone to fit that engine. I beleive tower carries them.

 

[TomMoorehouse]

nobody knows what flywheel to get???

 

[MikeP]

Sorry,

I made my own. I could make another one for you and I am sure there are others willing to as well.

Wade drew me up some cad plans for it.

MikeP

 

[MikeP]

pic

 

[Glenn Quarles]

Tom, I just used a NR 21 flywheel and collet. I turned the flywheel on my lathe enough to miss the carb and it works great.

Glenn

 

[TomMoorehouse]

a lathe is something i dont have....

ill bet the octura would fit but would also need to be modified

 

[Ron Olson]

Tom, if you have a problem with the flywheel hitting the carb, some can be put on backwards so that the taper and groove are closer to the carb. A flywheel from a ProBoat Miss Bud is smaller in diameter for more clearance.

If you don't have a lathe like me, I mounted the flywheel with a nut and bolt to a drill and held it to a flat file to grind it down.

 

[TomMoorehouse]

ron, does the pro boats flywheel use a drive wahser or a collet?

i need one that works with an 8mm collet

 

[Eric Perez]

Pro-boat flywheel from Miss-Bud 1/12 uses a drive washer.

 

[TomMoorehouse]

does anybody have this OPS flywheel?

It looks like it does not have a large overhang on the rear.

http://www.aeromarinerc.com/opsengines.htm

 

[nitrotoys]

See if Tim at PB boats can make you up one.

He can wipe one out for ya.

Tom

 

[Ron Olson]

I've been using the spacers on all of my .12 motors. This will help ensure that the flywheel won't be too close to the carb and/or block. I do have a vintage Octura flywheel on a modded Webra .11 that I got from Gary Preusse about 2 weeks ago. See the posting on the Fantom .12 also for more help.