Well, Spaceman, it seems you're getting a lot of free advice from the sidewalk superintendant set. I really like your setup as I've always thought that the scissor concept would be great. Any design usually takes a few tweaks here and there to get up to speed. I'm really anxious to see how it works, and I'm sure it will, as my tow mixer crapped out on me and this could be a good alternative.
--- On Fri, 10/5/12, spaceman <Spaceman@starship-enterprises.net> wrote:
From: spaceman <Spaceman@starship-enterprises.net>
Subject: Re: [papercreters] New scissors barrel mixer
To: papercreters@yahoogroups.com
Date: Friday, October 5, 2012, 8:57 AM
The bolts go through the shaft. I agree that the bolt should probably be hard, but I didn't have any in stock, and these will be trivial to replace if/when they break so I won't worry about it until I get to test. Haven't had a chance to get back to this, maybe today or tomorrow if things go well. On 10/2/2012 9:52 PM, clarke2 wrote:
I'm thinking the bolt keying to the shaft might be the weak point unless the shaft has a deep well for the bolt to register in. T And the bolt should be hardned. Just my 2 bits. Dan ----- Original Message ----- From: "spaceman" <Spaceman@starship-enterprises.net> To: <papercreters@yahoogroups.com> Sent: Tuesday, October 02, 2012 9:00 AM Subject: Re: [papercreters] New scissors barrel mixer Well the photo doesn't show a lot of detail, but I can assure you that I welded those nuts to the angle so they won't come off unless the angle is ripped apart. The welds aren't pretty but they are strong. A sledge hammer weld check confirms this. This is 2x2 angle as you guessed. The blades are 16" long which I suspect may be a bit much but I made it so I can take it apart and modify as needed. I tried to get it finished yesterday, got the motor mounted, but still need a couple of hours tying up loose ends. No time today, maybe tomorrow. On 10/2/2012 8:45 AM, Ron Richter wrote: Spaceman, I see where you bolted the nuts to the drive bar, but with paper in there and water it looks like you'll need a bit more weld to hold the nut to the angle iron. If the attach point were a bit more toward the center of the angle iron it may hold, but you may need to add a flat plate on the other side of the angle iron and another nut with bolt through the drive bar to hold it. I may be wrong, but the torque on that nut at the side of the angle iron may be too much and it will shear the nut from the angle. Don't have dimensions, so if the driven angle is only 8" long or so, and the angle is 2" X 2" or less it may be fine. Can't wait to hear how it works. Ron ------------------------------------------------------------------------------ This is the beast in the barrel. It is long enough that the three legs will not spin. It is not bolted to the barrel. The shaft goes through metal brackets that are on the outside. These brackets hold the shaft bushings and will support the motor. The blades are keyed to the shaft with bolts so that they can be removed if I ever need to work on the mixer. The alternative would have been to weld them in place, making it really hard to repair. If things go right I'll have this running tomorrow. I'll take more photos in the daylight after I get the motor running, and post a report on how it makes pulp. The original description said McCain's would mix a barrel full in two minutes flat!!! If this one is even close to that, I think I'll make short work of the triangles for the underground dome. spaceman No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5303 - Release Date: 10/01/12
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