wood chipper- grade of chippings

[TheTechnobear]

hi,

 

Ive got a JoBeau M300H which im generally very happy with, and is serving me well, im using it to chip almond tree cuttings (so hardwood)

but have a couple of questions I wonder if anyone can help me with...

(not sure if its a specific to jo beau or not really)

 

a) the output chips, are quite large (1-2cm), and it sometimes throws whole twigs through (i.e. unshredded), though only when small diameter (say 3mm ish)

Ideally, id like to get these down to a smaller size, and with no twigs....

(so chips could be fed into a pellet burner)

is it possible to adjust the chipper, or do i need to process with another machine? if so do you have any recommendations?

 

b) I have new blades on the machine, but would like to get some spares...

are there any recommendations? in particular to deal with almond wood given its so hard

 

 

thanks for any thoughts and suggestions

Mark

[Breezeblock]

adjust the anvil closer

[Stubby]

And slow the feed in down .

[Rich2484]

As said its feeding too fast. The faster it goes the more wood gets put between the blades. Bit like dicing a carrot. The faster you move along it the bigger the slices. The while twigs will either the feed in speed or the anvil is too far away from the blades allowing twigs to fold and get pushed down between the blade and anvil rather than being chipped.

[treequip]

As said its feeding too fast. The faster it goes the more wood gets put between the blades. Bit like dicing a carrot. The faster you move along it the bigger the slices. The while twigs will either the feed in speed or the anvil is too far away from the blades allowing twigs to fold and get pushed down between the blade and anvil rather than being chipped.

 

How does a gravity fed machine feed too fast? Gravity is a constant.

 

The problem is with the gap between the blade and anvil

[Rich2484]

How does a gravity fed machine feed too fast? Gravity is a constant.

 

The problem is with the gap between the blade and anvil

 

Sorry didn't see I was the only one who said to slow the feeding down.

[treequip]

For those machines with roller feed that is adjustable reducing the speed usually means restricting the flow of hydraulic oil to the feed rollers, prolonged use of this feature can cause overheating in the hydraulic system which is a bad thing.

[woody paul]

That is the problem with gravity feed chippers they don't produce a good chip, they are at braking brash down to ruff chips. To get a uniform chip you have got to have a power feed.

[skyhuck]

Small chippers tend not to produce the best chip, part of the problem is they are chipping only small twiggy material, larger timber makes much better chip, IMO.

[TheTechnobear]

thanks for such quick responses, good to hear that it sounds like i could be getting better chips out of it directly.

 

I will check the gap of the anvil - I did not realise it was adjustable, probably because the manual is in Spanish, and my Spanish is not too hot at present. Will try to work it out/find a copy of the manual in English.

 

Feed to fast....

okay, being a bit dumb here... isnt the feed controller by the throttle of the motor? i.e run fast, the drum is rotated quicker = faster feed, or is it not that simple?

Im usually run the engine at around 2/3 throttle (its honda 13hp engine) and crank it up, if needed due to thicker branches.

Slightly concerned if I slow it down, it will snag due to hardness of wood, as I assume a certain speed/power was needed for cutting.

 

 

fyi, the almond branches are on average 2-5cm diameter on the main branch, but obviously i still have attached the rest of the 'pruning', so theres a fair amount of 5mm or so twigs attached still

 

thanks again for the help

Edited January 9, 2013 by TheTechnobear