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#1
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Dual or Geared belt for Perkins 4-108
I wonder if I can convert my 4-108 to a dual belt or geared belt driven
alternator? The 100 amp Balmar seems to eat belts and I generally reduce the load to start at 40-50 amps. Spreading out the belt load seems a good alternative. Also anyone put two alternators on and how did you do that? Thanks, Norm |
#2
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The simple answer, sure you can. Is it COTs, maybe. As the song says,
"it just takes money" http://boatdiesel.com/Forums/main.cf...=2&Forum_ID=66 A search of this forum (alternator) turned up "Belts&Pulleys" but it is members only so I didn't read the post. I have added secondary alternators to jeeps, which would pose the same problems of fabrication. Usually mounted over and under. Most people use the same alignment on one belt for the two alternators. I use an offset alignment with two belts (the same size) for redundancy and serviceability. I can remove one alternator and still use the other. This would require double pulleys on the crank and whatever else runs off the same belt. Double belting is a good fix for belt load problems, but conditioning and proper adjustment is usually all that is requited. If you convert to toothed belts the is always the availability issue. If it breaks you need the exact replacement whereas V-belts can be had or made most anywhere. If your setup is eating belts, it sounds more like an alignment/setup problem. In the case of V-belts and pulleys, tension and alignment are important. Tension is the most miss understood of the two. Too tight a tension can cause premature belt wear, actually wearing out belts faster than not enough tension, not to mention what effect it has on bearings, and pulley alignment "Norm" wrote in message ups.com... |I wonder if I can convert my 4-108 to a dual belt or geared belt driven | alternator? The 100 amp Balmar seems to eat belts and I generally | reduce the load to start at 40-50 amps. Spreading out the belt load | seems a good alternative. Also anyone put two alternators on and how | did you do that? | Thanks, | Norm | |
#3
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Norm wrote:
I wonder if I can convert my 4-108 to a dual belt or geared belt driven alternator? The 100 amp Balmar seems to eat belts and I generally reduce the load to start at 40-50 amps. Spreading out the belt load seems a good alternative. Also anyone put two alternators on and how did you do that? Thanks, Norm why not use a poly vee (micro-vee) belt? the carrying capacity is significantly greater than vee belts, and the resistance is less. -- Your ridiculous little opinion has been noted. My diesel truck has been modified to run on an environmentally friendly mixture of clean burning Caribou fat and whale oil. "Tolerance is the virtue of a man without convictions" G.K. Chesterton |
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