#1
IP: 73.35.200.244
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Alternator tension device
Hi all, just got the alternator tension spring kit from Moyer. I have a question as to what belt to use. i have the high output alternator also from moyer. I have the longer mounting arm as well. do i use the new arm that comes with the kit? what size belt works best? i have two new 26" will that be to long for the tensioning spring to work properly?
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'69 Newport 30 MKI Hull #20 |
#2
IP: 104.174.83.118
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As far as I know here is nothing special about the curved adjustment arm included with the tensioner other than it's clean and smooth allowing the alternator to move smoothly on the tensioner. A rusty, chewed up or otherwise deteriorated arm would not be good.
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others |
#3
IP: 73.35.200.244
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Thanks, i like shiny new parts but if i dont have to change it i would rather not i have to pull the motor this winter anyway to replace the fuel tank so will change it then. the high output alternator is a bit much. i keep smoking belts. i did just see the larger pully for the accessory drive, is that difficult to change while the drive is on the motor?
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'69 Newport 30 MKI Hull #20 |
#4
IP: 47.142.128.103
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Quote:
Not sure this is true but lateral force on the pulley can shorten bearing life? ex TRUE GRIT |
#5
IP: 138.207.177.95
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Quote:
What kind of alternator do you have and how many amps are you getting out of it? * a loose belt will slip and heat the pulley, which will eventually damage the alternator |
#6
IP: 73.35.200.244
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thanks all. got it all hooked up. i did find that my mounting arm was on the wrong side of the attachment down on the bottom. i did have a bit of misalignment in the setup. all good now and we will see how long it goes. i think i have a bit to much alternator for my setup. its the 100 amp rig from moyer. maybe the 55 amp one is better suited.
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'69 Newport 30 MKI Hull #20 |
#7
IP: 69.250.111.245
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I think you'll find the arm in the correct spot may help with the belt issues. Don't forget to follow up!!
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-Shawn "Holiday" - '89 Alura 35 #109 "Twice Around" - '77 C-30, #511 with original A-4 & MMI manifold - SOLD! (no longer a two boat owner!!) |
#8
IP: 138.207.177.95
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Quote:
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#9
IP: 47.142.132.134
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Quote:
ex TRUE GRIT |
#10
IP: 104.174.83.118
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What determines the load on the engine, pulleys and belt from alternator load is the battery State of Charge (SOC), not the size of the alternator alone. A 35A alternator delivering 35 amps will impart the same load as a 105A alternator delivering the same 35 amps. The difference is the 105A alt will be cruising along easily at a third of its rating while the 35A alt will be straining at maximum.
I run a 105A alt and monitor its output via a digital Gauss loop ammeter. I don't make a habit of running my batteries down and charge them in banks. The greatest amperage I've ever seen is around 50A (~1500 engine RPM=2600 alt RPM approx.) as Joe mentioned and that rate was short lived as the battery SOC came up with a corresponding drop in charge rate.
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others |
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