O.S. Engine OS23870000 42mm Marine Propeller - Compatible with 21XM  [OS23870000]

O.S. ENGINES MARINE PROPELLER 42MM FOR 21XM
Price:
NZD$17.18
Brand:
O.S. Engine
Model:
OS23870000
GTIN:
4531028128620
Condition:
Brand New
Write a review
alt="O.S. ENGINES MARINE PROPELLER 42MM FOR 21XM" title="O.S. ENGINES MARINE PROPELLER 42MM FOR 21XM"
alt="O.S. ENGINES MARINE PROPELLER 42MM FOR 21XM" title="O.S. ENGINES MARINE PROPELLER 42MM FOR 21XM"

Precision 42mm Prop for 21XM Tuners

This 42mm marine propeller is offered as an RC-scale spare for 21XM-designated models. It is sold as the propeller only, not a full drive assembly, and is intended for hobby marine craft.

Compatibility is restricted to the "for 21XM" label used in the product title; confirm your hull and shaft accept a 42mm prop before fitting. Typical installation requires the correct prop adapter and retaining hardware on the prop shaft; verify shaft fit and thread engagement before first run.

For tuning, altering prop diameter impacts thrust and RPM balance. Fit this prop for matching original performance or to assess small changes in thrust on small-scale RC boats, and always do static checks and a cautious low-throttle trial after installation.

Will swapping to this 42mm affect acceleration or top speed?

Yes, diameter changes alter thrust and RPM response. A 42mm prop will shift the balance between acceleration and top-end depending on motor and gearing; test progressively and monitor motor load.

Is this suitable for experimental tuning runs?

It is suitable for controlled tuning trials. Fit the prop, confirm secure mounting, and run short tests at conservative throttle settings while recording RPM or lap data if available.

What should I watch for after changing props?

Monitor motor temperature and current draw, listen for unusual vibration, and check for cavitation or loss of grip; revert and reassess if performance is unsatisfactory.

Copyright © 2008-2026 rcjaz.co.nz All rights reserved