What's on your bench today?

[spudulike]

Hope ya didn't wrench too much on that upper AV mount. Looks like he got his saw stuck.

 

Here's some numbers I have from Parris and Brad in duration and degrees:

 

Ex- 170° duration, 95° ATDC

 

Int- 150 duration, 74° FTDC

 

Tran- 122° duration, 119° ATDC

 

My 390 was very similiar to yours.:

Ex-96

Tran-122

Int-76

 

Thanks Wes - I put the degree wheel on it and saw the exact same figures, I ended up squaring and widening the inlet, widening the exhaust port significantly, widening the rear uppers and raisig all the uppers to reduce blowdown. I found squish to be 0.25mm - too little IMO, especially on an older saw so made up a custom gasket and left it at 0.55mm....sorry metric here:blushing:

[spudulike]

Are you sure it was push on? They are usually a self-tapping type screw in there so it should be twisted on.

 

Thats about right - some are potted in but most screw in - if the case has some sort of thread then fit a larger diameter HT lead otherwise use a little epoxy or glue like you have done!

[mikerecike]

Are you sure it was push on? They are usually a self-tapping type screw in there so it should be twisted on.

 

Definitely an unthreaded 'spike' epoxy it is.cheers folks

 

Sent from my GT-N7000 using Arbtalk mobile app

[wyk]

Thanks Wes - I put the degree wheel on it and saw the exact same figures, I ended up squaring and widening the inlet, widening the exhaust port significantly, widening the rear uppers and raisig all the uppers to reduce blowdown. I found squish to be 0.25mm - too little IMO, especially on an older saw so made up a custom gasket and left it at 0.55mm....sorry metric here:blushing:

 

That's the tightest squish I've seen so far for standard. That thing must have been running fairly well stock. If I recall, my 385xp was pulling 178psi with the gasket delete before break-in. It wore an 8 pin rim with a 32" bar in douglas fir.

 

[Rich2484]

Ms260, doing my nut in. Has passed all it's tests again. Just the carb left to check and test.

[spudulike]

390XP nearly finished, ported, new starter, new chain brake handle bush - they always go missing and a new rim drve, just waiting for the top AV spring.

 

MS880, new decomp - very lucky it didn't drop as it was in a bad state - carb clean and rebuild as it wasn't starting well.

 

MS660 in for porting - very nice condition and a brace of buggered 026s.

 

Got an MS200 back after rebuild - owner said the idle wasn't good and lack of power - the chain depth gauges were as new but the cutters were half down so wouldn't cut for toffee - sorted that out and ran through some rock hard seasoned Wych Elm and it is perfect - bit baffling - top end was bang on 14Krpm......will run it through further wood this weekend before returning it.

[Rich2484]

Got a small stump grinder dropped off today.

 

It wouldn't start. So after removing the plug and the off/on switch. It still wouldn't spark. So removed the cables for the oil sensor and away it went. As soon as I re attach the sensor wire it won't spark.

 

So going to change the oil, it was on the over filled side a little.

 

So question. How do to by pass the sensor?

[jamesd]

I know this is not strictly "on your bench" related but what brand of tools do you guys use? I need a set of pliers and spanners and was wandering what the decent makes are nowadays? Or what you use at the moment and think it is good quality/value for money?

[Rich2484]

I know this is not strictly "on your bench" related but what brand of tools do you guys use? I need a set of pliers and spanners and was wandering what the decent makes are nowadays? Or what you use at the moment and think it is good quality/value for money?

 

Now that's a very big question.

 

Depends on the jobs. I use a lot of whitworth spanners. Also use Britool.

 

But for modern ones I'm not sure. I have got the brief case type one from halfords, the advanced range. They are nice and easy to keep away.

[spudulike]

I know this is not strictly "on your bench" related but what brand of tools do you guys use? I need a set of pliers and spanners and was wandering what the decent makes are nowadays? Or what you use at the moment and think it is good quality/value for money?

 

An eclactic mix of cheap shrap that does the job, old school Draper, Hilka, britool and a few others - saw work is light weight work so isn't too heavy on the tools