Correct Power Valve Orientation?

[SJBrit]

Since I'm an engineer and I just can't help myself, I pulled out a power valve to see what they look like (it's what you do with your new PV motor when you haven't quite got on the water yet :bigok

Anyway, the orientation seemed counter-intuitive to me (see photos). I guess I had thought that the chamfer on the end was there to make it parallel to the cylinder wall, but this is the exact opposite, making the valve end perpendicular to the wall.

Now, I have no reason to be concerned since I don't think this motor has been touched since it was running and everything spins freely, but I'm super-paranoid about not messing up my new baby when I fire her up. Reading the 16mm DASA thread where it was suggested that an inverted PV might be the cause of the piston breakage, I have to ask:

Is this right? Is the chamfer on the end of the valve supposed to be parallel or perpendicular to the cylinder wall?

 

[SJBrit]

(BTW, I won't be spinning the starter until everyone has said "that's exactly how they work" or I've talked to Chucky.)

 

[Big Kahuna]

u suck

 

[SJBrit]

Are you jealous of my valves...?

 

[SUPERTUNE]

Oh Boy now you did it!
Now you should IMO, take it all apart, clean everything, get a new gasket, now put the slide back in back the way it came out, (short side towards the exhaust gasket) lay the gasket on, set the housing on, as you start to tighten up the bolts, push the slide up and down and back and forth sideways to find exact centerline of shaft and then tighten down housing so the shaft cannot ever get stuck when engine gets up the temperature (hot). then be very careful with the bellow assembly as not to get it oily and NOT to over stretch the rave bellow spring while getting it back on, if you do overstretch it you WILL need to buy another one as they will blow the bellow apart if the spring is damaged.
And have FUN!

 

[SJBrit]

He he - I knew you'd be mad with me :wave: You can blame the government - they used to pay me to take missiles apart to figure out how they work and this is what they've turned me into!

I'll get everything cleaned up and make sure it's all aligned as you say. Hoping to get wet this afternoon for the first time in way too long.

 

[keith t]

He he - I knew you'd be mad with me :wave: You can blame the government - they used to pay me to take missiles apart to figure out how they work and this is what they've turned me into!

I'll get everything cleaned up and make sure it's all aligned as you say. Hoping to get wet this afternoon for the first time in way too long.

which missiles ? did you work down stevenage or hatfield way ?

 

[SJBrit]

which missiles ? did you work down stevenage or hatfield way ?

Farnborough. And I couldn't possibly say... :sneaky:

 

[keith t]

Warton, and i couldnt possibly say - but look at all the fast jets in the UK over the last 30 yrs and that would give some clues as to what ive been up to

 

[SJBrit]

Warton, and i couldnt possibly say - but look at all the fast jets in the UK over the last 30 yrs and that would give some clues as to what ive been up to

Cool. I used to love playing around with missiles and radars and jets and helicopters, but I have to say it did get a bit old after a while. Great memories though: I wish I could share them!

 

[Big Kahuna]

Cool. I used to love playing around with missiles and radars and jets and helicopters, but I have to say it did get a bit old after a while. Great memories though: I wish I could share them!

Adian, it is ok to admit that you were the guy wit the bucket of soap and water.....................to clean te service trucks.

 

[SJBrit]

Now, why did you have to tell everyone that? I told you about that in confidence. :buttkick: