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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Grizzly G0602
This is a 10x22 lathe with speed changes effected by moving v-belts:
http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of the high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC |
#2
Posted to rec.crafts.metalworking
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Grizzly G0602
On Dec 17, 9:13*pm, "Michael Koblic" wrote:
This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of the high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC The instructions are to release the tensioning roller to change the belt, then retension the belt us the roller. Seems pretty straight forward. Similar to the spring loaded tensioner in my Prazi lathe. Paul |
#3
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Grizzly G0602
On Dec 17, 9:13*pm, "Michael Koblic" wrote:
This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of the high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC Sorry, I should read a little better before writing! I concure with your conclusion. Upon re-reading, there appears to be two belts! Both a low speed belt and a high speed belt. For high speed, you remove the low speed belt that uses the tensioner and place the high speed belt on the indicated pullies. With a belt as long as they show, 33 inches, it should be moveable from groove to groove. Paul |
#4
Posted to rec.crafts.metalworking
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Grizzly G0602
On Dec 17, 11:13*pm, "Michael Koblic" wrote:
This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of the high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC Quite a while back I used a similar lathe and found that you had to loosen the motor. The problem was not addressed in the (useless) manual. It was a real pain because you had to tip the lathe over to get at the bolts. I think that I re-mounted the motor to make it more easy to do this job. Usually I just ran that lathe on its lowest speed.. |
#5
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Grizzly G0602
" fired this volley in
: On Dec 17, 9:13˙pm, "Michael Koblic" wrote: This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of t he high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC Mike, the instructions clearly indicate you don't use (or need) the tensioner for the high-speed selections; pulley A to C. It's a long belt. Vee-belt drives don't rely on high tension to grip, so the belt is flexible and stretchy enough to hop grooves. LLoyd |
#6
Posted to rec.crafts.metalworking
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Grizzly G0602
On Thu, 17 Dec 2009 21:13:33 -0800, the infamous "Michael Koblic"
scrawled the following: This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of the high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? It's harder on the belts and creates more vibration from the belts "setting up" in that position. I got around it on my G1012 (yes, wooddorking bandsaw) by putting link belts on it. They don't take a "set". Vibrations from the saw are much lower with link belts on it. -- This episode raises disturbing questions about scientific standards, at least in highly political areas such as global warming. Still, it's remarkable to see how quickly corrective information can now spread. After years of ignored freedom-of-information requests and stonewalling, all it took was disclosure to change the debate. Even the most influential scientists must prove their case in the court of public opinion—a court that, thanks to the Web, is one where eventually all views get a hearing. --Gordon Crovitz, WSJ 12/9/09 |
#7
Posted to rec.crafts.metalworking
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Grizzly G0602
Lloyd E. Sponenburgh wrote:
" fired this volley in : On Dec 17, 9:13˙pm, "Michael Koblic" wrote: This is a 10x22 lathe with speed changes effected by moving v-belts: http://cdn1.grizzly.com/manuals/g0602_m.pdf What puzzles me that there seems to be no way to relieve the tension of t he high speed belt to move it from groove to groove. I had a look at the non-Grizzly clone today (trust me, it's identical) and could not work out how to move that belt except by forcing it (the slow speed belt has a tensioner which can be relaxed). Neither BTW could anyone else present. I thought this was a no-no, bad for the belts. Can anyone comment? -- Michael Koblic Campbell River, BC Mike, the instructions clearly indicate you don't use (or need) the tensioner for the high-speed selections; pulley A to C. It's a long belt. Vee-belt drives don't rely on high tension to grip, so the belt is flexible and stretchy enough to hop grooves. The machine in the local shop had the belt pretty tight and sitting down in the grooves. Half-hearted efforts of all those present did not suggest that the speed change would be an easy proposition. I thought about it afterwards and wondered if in fact thay had the wrong (27.5") belt on the wrong pulleys. the way the tensioner is placed it should work for both sets of pulleys, pushing the belt *out* on the B pulley and pushing it *in* on the A pulley. I shall go back and have another look, especially as the manager intimated they might be willing to part with the machine at a substantial discount. I had a gear head version of a similar thing lined up at $1108, but that one comes with no accessories and I am always concerned about breaking gears where a slipping belt would bail me out. Also I understand the belt-driven lathes are, pound for pound, quieter. Plus no shipping locally. Etc... -- Michael Koblic Campbell River, BC |
#8
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Grizzly G0602
"Michael Koblic" wrote in message ... snip I have spent the last hour on various fora dealing with the G0602. All manner of problems came up but strangely the speed change has not been mentioned once. Thus I figure that on the genuine Grizzly it is not an issue. The local machine is made (well, imported) by King Canada and may be different, although in every aspect I can assess from the manuals, pictures etc. they are identical. One could always restrict oneself to running the lathe at 560 rpm or below. The other choice would be to install a longer v-belt for the A side and *use* the tensioner. They are commonly available 3L belts... The manual in the shop was poor quality and the pictures were hard to interpret. The on-line manual (especially the pictures) is clearer: http://www.ujr.ca/EN/PDF_Support_Fil...manual-eng.pdf The relevant picture clearly shows the use of tensioner in the A position. The text, however, is clear as mud... If I buy this I shall employ someone skilled in interpreting birds' entrails. -- Michael Koblic Campbell River, BC |
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