Author	[Modern View]
MFPoor 12-03-2012 03:20:08 72.4.0.230 Report to Moderator	Most 3-point disc's I've seen were put together wrong for using them. The rear gangs need to be moved outward somewhat. They also need to be set one or two positions less aggressively than the front gangs. Rear gangs are running in soil that has already been loosened by front gangs, so that soil is easier to move. Hence, rear gang doesn't need to be as aggressive to move same amount of dirt. Don't shorten top link much, or you'll lose the effects of the rear gangs. Disc needs to run LEVEL front to rear for the most part, with SLIGHT adjustments as needed to fine tune. I've got an 8-1/2' Massey Ferguson #25 disc that does an incredibly fine job of working and leveling a seed bed. I use it when building waterways and filter strips. I use a slightly worn down disc blade on the outside of the rear gangs. That takes care of the "dead furrow" effect. As mentioned, move rear gangs outward somewhat. That will lessen the center ridging where rear gangs throw too much dirt in a pile if rear gangs are cutting. I prefer rear gangs to be about one disc spacing wider than front gangs. Also, play with ground speed to tune results. A well adjusted disc often doesn't need a drag behind it to leave a level, well worked seed bed. [Reply]   [No Email]
Brendon-KS 12-03-2012 17:19:14 63.245.190.37 Report to Moderator	Re: Outside disc tract in reply to MFPoor, 12-03-2012 03:20:08   I fully agree with MF. When I looked at the picture of the disk I thought too that the rear gangs were pushed together too much. I have a 5' three-point disk that is similar to the one shown and it does a nice, even job when the third link is properly adjusted. Without a "furrow filler" (these are usually smaller and have three lobes) blade on the rear gangs it is impossible not to leave small furrows on the edges but the key point is to have the rears moving the same amount of soil back in as the fronts move out. If this is not happening the little furrows will be only a minor annoyance compared to leaving the whole swath uneven. [Reply]  [No Email]
Tx Jim 12-03-2012 04:40:29 67.142.163.21 Report to Moderator	Re: Outside disc tract in reply to MFPoor, 12-03-2012 03:20:08   Using a cutting torch or the disk will ruin the cutting edge. As previously stated leveling the disk,installing a furrow filler attachment or removing outside rear disk and installing smaller disk on the very outside rear. [Reply]  [No Email]