Spuds Porting and Tuning Thread

[spudulike]

Ahh yeahhh

 

 

How the other half lives, while we slave away in our hovels

[wyk]

Hah. That hotel is more show than go. Not unlike my first attempt at porting a 241cm. It's a brand new hotel with very low cost room offers right now, so I thought I would try it out. I do fancy having a wee with the office workers watching across the way there. Never thought I was such a pervo. Ah well.

 

Er, Ah yeahh

[spudulike]

Hah. That hotel is more show than go. Not unlike my first attempt at porting a 241cm. It's a brand new hotel with very low cost room offers right now, so I thought I would try it out. I do fancy having a wee with the office workers watching across the way there. Never thought I was such a pervo. Ah well.

 

Er, Ah yeahh

 

Never seen a loo in a shower cubicle before, that is a little weird - does it have good ventilation for if you have been on chilli or is it a time saver - have a crap and shower at the same time:thumbup:

 

I think those office workers would be shocked.....I sort of pity them!

[spudulike]

This was the sort of timing curve I was talking about in respect to my 066, it is completely different from a four stroke where the advance increases with revs.

 

In this case, the advance backs off dramatically with revs to protect the engine from overheating and pre-detonation.

 

Older saws had one set advance, this type of curve is found on CDI units, on chainsaws, it would have around 5-6 set points where the advance will change but the concept is the same.

[peatff]

Glass door on the toilet is handy, you don't need a lock because everyone can see it's occupado The shower head looks like a handy washing up tool instead of a bidet. You could wash your feet in the bog.

[jaime bray]

Have you ever tried doing the drill holes in the exhaust whilst running the saw at full revs? Just wondered if it would be a interesting video to actually watch on a rev ometer the difference in the saw output?

 

Maybe talking absolute rubbish but just thought about it yesterday, and was wondering if would show the difference as it occurs.

 

If talking rubbish please tell me, and explain the stupidity behind my thought if it is not related to the potential to slip and injure whilst drilling a full revving saw

[Stubby]

As the drill breaks through and pushes swarf down the side of the piston and the spinning chain takes the knuckles of your drill hand you start to wish you had just taken a tacho reading before and after

[jaime bray]

As the drill breaks through and pushes swarf down the side of the piston and the spinning chain takes the knuckles of your drill hand you start to wish you had just taken a tacho reading before and after

 

Was thinking could do it without the bar and chain on. Just wondered if it would enable the porters of the world to truly find the optimum hole size for porting. Admittedly not into mechanics so firing from the hip.

 

Hadnt thought about the piston aspect, good point. Every day a school day and all that.

 

Thanks for the reply to what may have been a stupid question/thought

[Stubby]

Was thinking could do it without the bar and chain on. Just wondered if it would enable the porters of the world to truly find the optimum hole size for porting. Admittedly not into mechanics so firing from the hip.

 

Hadnt thought about the piston aspect, good point. Every day a school day and all that.

 

Thanks for the reply to what may have been a stupid question/thought

 

Not good to run a saw flat out without bar and chain on . It needs that bit of load on it . Have seen the clutch spin off and dissapiar at a great rate when doing that

[Daniël Bos]

Have you ever tried doing the drill holes in the exhaust whilst running the saw at full revs? Just wondered if it would be a interesting video to actually watch on a rev ometer the difference in the saw output?

 

Maybe talking absolute rubbish but just thought about it yesterday, and was wondering if would show the difference as it occurs.

 

If talking rubbish please tell me, and explain the stupidity behind my thought if it is not related to the potential to slip and injure whilst drilling a full revving saw

 

A much safer way, and more accurate would be to make a really big square edged hole in an an old exhaust with a sliding cover.

That way you can make the hole smaller again after you've gone past the perfect size and performance no longer improves. Then with the hole at the ideal size, simply measure up and create a hole that size in the real exhaust.

 

Downside is you'd either need a spare exhaust or close off the excess hole you've made.