Torque of alternator rotor nut

jms

jms

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So just having installed an RGM Atlas belt drive, the question comes up as to how to apply 70 lbs of torque to this nut. I’m thinking that amount applied to a 20mm belt may not be good for it. Thoughts?​
 
I'll +3 that.

I've done it 3 times with a 20mm RGM belt and 2 times with a 25mm belt. I did not have any problem with the belts.
 
jms said:
So just having installed an RGM Atlas belt drive, the question comes up as to how to apply 70 lbs of torque to this nut. I’m thinking that amount applied to a 20mm belt may not be good for it. Thoughts?​
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Gents, torque is measured in lbf-ft. A toothed belt transmits a static tensile force, not a torque. Using common belt parameters for a Norton, 70 lbf-ft equates to about 500 lbf of tensile pull at the belt.

- Knut
 
Simply use a wooden block between a tooth and a stationary point.
 
concours said:
Simply use a wooden block between a tooth and a stationary point.
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I wonder if that would work with a belt pulley. The teeth are kind of shallow in depth. I am not knowing.

Much easier to use a clutch locking tool with the belt on both the engine and clutch basket.
 
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Just finished putting mine back together after changing the main seal, I to kinda cringe thinking it going to slip a tooth. It's never had a problem doing it that way.
 
Schwany said:
I wonder if that would work with a belt pulley. The teeth are kind of shallow in depth. I am not knowing.

Much easier to use a clutch locking tool with the belt on both the engine and clutch basket.
Click to expand...
Well, wonder if you must.🤔

Meanwhile, I work on this type of belt drive regularly. 💡⚙️🔧🏁
Torque of alternator rotor nut
Torque of alternator rotor nut
 
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