Adventures With The Cherub
Mark Lander's Specifications
Page 2
To quote Mark:
"They are designed to do everything the big critters can do, weigh in at about 12kg, about the same price as a good blender, fit in a carry case or into your plastic vat for storage after use, tough enough. All my testing has been with new denim (2.5 hours to good smooth pulp), it can handle all botanical plant materials happily (our New Zealand flax test had great results with pulp in 30 minutes), capacity - it makes three gallons or 1.5 buckets full in one go. Great for experimenting and for small projects.
This one can be picked up in one hand. I had to increase the capacity to stop it jumping off the table with the denim rag!! The Cherub needs the rag cut into 1/2 inch squares. It doesn't need much to make a load. About 1.5 square feet of cloth or a small saucepan of cooked up plant material. It would be easy to overload.
I have found [a motor] at Grizzly Industrial, Inc - model number G7942 - have a look - you will find these little baby drill presses in any hardware store. (Note from Sunni: Northern Tool was the best buy for online purchasing.) Extremely common, there may be one locally on special you can just go and get. The motor is a 1/3 horse power and the right size to fit on the top plate. Also, the pulley will fit the shaft. Maybe fit a switch into the cord somewhere. The fan belt is a 25?? Check it out. One of the smallest sizes. Let me know how you get on.
Yep!! It is a cute small machine for having fun with and experimenting. It does all the big ones will do only smaller. It has been ground in and should be ready for use. Sorry about the rough edges - maybe give them a scrape with a knife.
A load for one of these is enough denim, cut to 1/2 inch squares, to just cover the bottom of the tub in one layer. If it's sheet material, cover the bottom a bit more to two layers or a small pot load of plant material. You will have fun experimenting!
Motor Fitting
1/3 Horse power, 110 volt, 1725 rpm needing to be stepped down to around 230rpm.Fitting the motor is reasonably easy if you do it in the following order:
1. Get the motor wired up with a long extension lead, rotating clockwise as you are looking into the pulley (there is one included in the package)
2. Fit the v-belt guard
3. Now position the motor on top, lining up the shaft with the hole in the guard
4. With a pen, mark where you have to ddrill the holes to bolt on the motor
5. Drill holes through the top plate and bolt on the motor using nuts, bolts and washers. There are slots in the motor foot so you can tighten the fan belt in future.
6. Put on the motor pulley, lining it up with the big 5 inch one. (Note from Sunni: It was determined by the other beta testers the 5" pulley was too small, allowing the roller to turn too fast. Mark recommended a 6 inch pulley to step down the rpm sufficiently.)
7. Now go shopping for the fan belt. Put the whole machine in the back of the car and go to the nearest automotive supply shop. Try out the sizes and get one that is a god snug fit.
8. Refit the guard top - it will fit nicely - spin it around by hand to check that nothing is rubbing etc If it is, identify where and give it a twist!
9. Have fun with some old pulp first to get the feel of the water level and how it circulates. The water level is just covering the bedplate.
10. Put the water in first with the machine running. You will hear swishing as the level reaches the roll. Throw in the pulp you are trying and stir it up with a stick - a prod behind the roll occasionally will dislodge any blockages - it will want to circulate. Play with the main screw. Lower it down and you will hear a low rumbling as the roll works on the pulp. This is where 95% of the work is done. Easy and fun!
11. Check for any leaks. It is never totally dry - water is amazing stuff for finding a pinhole - and pulp is amazing stuff for sealing them up!!!! If you run your sailing ship onto the rocks, just haul around the bottom some cotton waste and it will block the holes, enough to get to the next port!!!!"TIP on pulping from a friend of Mark's: His friend used to use industrial scale Hollanders and they would run a knife through the pulp to check to see if it was done - measuring the fiver on the blade edge.
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Last revised: DEC 3 2006