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Old 05-08-2018, 12:56 PM   #1
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Default Prop nomenclature - need a little help

Rounding out the 'model/serial number/identification, etc.' book for equipment/parts on the boat.
Per the parts manual the boat/engine combo will have a LH and RH ...

PROP,24X26X4,HS,LH,NI,2"SHFT,6"HUB
Known
- 24x26x4 = 24 inch diameter, 26 inch pitch, 4 bladed prop
- LH = Left hand (of course the other is a RH)
- 2"SHFT = 2 inch shaft
- 6"Hub = 6 inch hub
Need help
- HS = ?
- NI = ?

Thanks in advance
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Old 05-08-2018, 01:34 PM   #2
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Prop specs are always (Diameter x Pitch x Blades)

HS = High Speed

High-Speed props are for planing boats which run at higher rpms. As compared to full displacement boats that can run at 90% engine load at 1,800 rpm's.

NI = Nickle (Nickle Bronze)

Nickle Aluminum (Ni-Al) Bronze is a very, very common propellor alloy. This is either a Nickle Bronze, or an abbreviated abbreviation for Ni-al.

NOTE:

Shft (Shaft): Diameter
Hub: Length of hub parallel to the shaft.
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Old 05-08-2018, 08:48 PM   #3
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@ Shrew ... thank you very much.
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