Where can I buy a auto reverse stress controller?

[ukminch]

I'm presuming it should be programmable to work off any type?

[GlobalNewark]

£292, they work off a tach sensor (flywheel) alternator pulse or magneto. Anything with a signal pulse.

[aspenarb]

I Know these stress controllers work but its a shame the manufacturers never went non electronic. How hard would it have been to rig up a variable displacement hydraulic pump coupled to mechanical engine driven governor to slow roller feed down in a linear way rather than the stop start electronic route.It would be a lot kinder to the engine and hydraulics.

 

Bob

[openspaceman]

I Know these stress controllers work but its a shame the manufacturers never went non electronic. How hard would it have been to rig up a variable displacement hydraulic pump coupled to mechanical engine driven governor to slow roller feed down in a linear way rather than the stop start electronic route.It would be a lot kinder to the engine and hydraulics.

 

Bob

 

Interesting idea but doesn’t it need something instantaneous AND the slight reverse to pull the load off the knives.

 

The electronic route looks simplest but I could envisage a mechanical governor "balls out" when up to speed but pushing a diverter as the speed dropped.

[aspenarb]

Interesting idea but doesn’t it need something instantaneous AND the slight reverse to pull the load off the knives.

 

The electronic route looks simplest but I could envisage a mechanical governor "balls out" when up to speed but pushing a diverter as the speed dropped.

 

I think the only reason you need an instantaneous stop on these systems is because the rollers fire the timber in at its fastest to start with, I am not so sure they reverse slightly on stop or whether the last blade round relieves the pressure with its cut. Either way you would still need the stop and reverse buttons for HS.

 

Bob

[openspaceman]

I think the only reason you need an instantaneous stop on these systems is because the rollers fire the timber in at its fastest to start with, I am not so sure they reverse slightly on stop or whether the last blade round relieves the pressure with its cut. Either way you would still need the stop and reverse buttons for HS.

 

Bob

 

I'm pretty certain the Heizohack reverses and this will be because of the self feeding characteristic of a drum chipper. I'll have to look more carefully at the disc chippers but I think they do just stop. This latter makes the control easy and you just need to dump the oil flow to the controlling spool block. Feed stop and reverse still being on the original block which is re enabled once the governor is back up to speed.

[aspenarb]

Interesting about the self feeding characteristics of the drum chippers, I have that Morbark wtc festering in the yard that needs to be retro fitted with a stress kit, its been crane fed but I would like to bring it up to date so foot soldiers could use it. I was looking at the timberwolf kit which it cheap but I may need to research this a bit more because it too is a drum type.

 

Bob

[GlobalNewark]

We use the same system on all Bandit chippers whether drum or disc, there is an option for reversing autofeed on all units.

[ukminch]

£292, they work off a tach sensor (flywheel) alternator pulse or magneto. Anything with a signal pulse.

 

Seems like the cheapest option so far. May well be in touch early next week!

[Breezeblock]

i picked up a controller for our chipper made by woodward for 60 on ebay the only thing i had to do was program it which was interesting to do