Any Chipper mechanics?

[woodhick]

I have a friend that just purchased a Chipper and we are having some trouble with it.  It is an Asplundh style drum chipper.  Cant find a maker, not sure if its Whisper, Altec, Mitts & Merrill or another.  It has a steel plate under the drum that is spring tensioned that I assume controls the feed rate or chip size.  Correct me if I am thinking wrong here.  I had a disc style but have never messed with a drum chipper.  Anyway when we put in a piece that is 3" or so in diameter it will only chip about 3 feet of it and then it  stalls/ slips the belts.  It has a Ford industrial V-8 on it and it runs good.   Does anyone have a manual or procedure for adjusting the bottom plate on this style of chipper?  Thanks.

[Reddog]

On my Asplundh chuck and duck, the feed pan is adjusted by jack bolts. You set it flush too an 1/8" lower than the bed knife. I have not seen a spring style. :-\

[logwalker]

I am assuming you tightened the belts?

[woodhick]

yeah belts are tight. it's stalling V-8 Ford at full throttle.  Governor appears to working properly.

[Reddog]

If you can get some pictures, we can look at it a little better.

Om my chuck and duck, I have the bed knife set 3/16" from the drum. The knife clearance .010 to .015 from the bed knife.
The 3/16" can be increased to 1/4". It takes some trail and error to see what settings feed and give the best chip.