What's on your bench today?

[Moose McAlpine]

49 minutes ago, spudulike said:

Nice?

Need some cash then i can run the other one up to you!

 

This new one has never even had fuel or oil in it. Looking forward to running the other one now.

[SpannerRat]

I have a KM94 that’s had me scratching my head a fair bit. Has compression. Has a nice spark, but won’t fire or even pop.
Went through a whole range of options before I got there, bad flywheel?, bad key?
Eventually realised that the timing is way off. Still haven’t worked out quite how it’s ended up like it is.



Rouge one on the left, working on the right, both at TDC.

I can only guess the crank has spun on itself???

Edited September 11, 2020 by SpannerRat

[spudulike]

Probably different sets of coils and flywheels. Had that with a blower once, the thing sparked when the magnets were around 180 degrees from the coil.

Check to see if there are two types available. 

Highly unlikely the crank has twisted. 

[SpannerRat]

I thought that, there is an engine change over when looking for parts but the crank and flywheel are the same part numbers throughout.
I need to fully strip it and see what’s going on.

[Khriss]

22 hours ago, Moose McAlpine said:

What's better than having a brand new 395 on your bench? Having two!

 

Needs the full wrap kit, dogs, source the right bar and then it's ready to sit on the wall as a display saw.

 A suspiciously shiny clean workshop  ? wot you think mr @Stubby  ?  K

[spudulike]

1 hour ago, SpannerRat said:

I thought that, there is an engine change over when looking for parts but the crank and flywheel are the same part numbers throughout.
I need to fully strip it and see what’s going on.

That's strange, I have seen twisted cranks before and the output shaft wobbles when rotated due to the twist but it is rare, one 346 and can't remember the other machine type, think it was a 660.

Let us know what you find.

[bmp01]

9 hours ago, SpannerRat said:

I have a KM94 that’s had me scratching my head a fair bit. Has compression. Has a nice spark, but won’t fire or even pop.
Went through a whole range of options before I got there, bad flywheel?, bad key?
Eventually realised that the timing is way off. Still haven’t worked out quite how it’s ended up like it is.



Rouge one on the left, working on the right, both at TDC.

I can only guess the crank has spun on itself???

Would have thought it'd be the power take off side that would 'spin'. The flywheel would slip on the crank before the crank slipped.  Unless the crank parts were well out of spec when assembled.

 

Don't suppose it has done a big end or small end bearing leading to a load of backlash and confused the tdc position??

 

No doubt all well become clear when is apart.

 

 

 

[Moose McAlpine]

4 hours ago, Khriss said:

 A suspiciously shiny clean workshop  ? wot you think mr @Stubby  ?  K

Not mine unfortunately. When i had my own garage it was packed wall to wall with tools.

 

Been a mechanic for 14 years, lots of tools, equipment, welders, etc. Breakup with my ex saw me out of that house (rented) and now all my stuff lives in a unit on a farm. Even more tools in it, and a chipper!

[Khriss]

33 minutes ago, Moose McAlpine said:

Not mine unfortunately. When i had my own garage it was packed wall to wall with tools.

 

Been a mechanic for 14 years, lots of tools, equipment, welders, etc. Breakup with my ex saw me out of that house (rented) and now all my stuff lives in a unit on a farm. Even more tools in it, and a chipper!

Brent Cross ?? Not far from me office then. K

[SpannerRat]

Would have thought it'd be the power take off side that would 'spin'. The flywheel would slip on the crank before the crank slipped.  Unless the crank parts were well out of spec when assembled.
 
Don't suppose it has done a big end or small end bearing leading to a load of backlash and confused the tdc position??
 
No doubt all well become clear when is apart.
 
 
 

The flywheel side is the PTO side on these, clutch bolts to the flywheel. The bearings looked ok when I slid the pot off for a peek.