Serpent 401744 Bladeless Spool Outdrives - Spring Steel Racing Upgrade  [SER401744]

Serpent SER401744 Spool Outdrive 4X-411 no-blade (2)
Price:
CAD$36.59
Brand:
Serpent
Model:
SER401744
Condition:
Brand New
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Race-Focused Bladeless Spool Outdrives by Serpent

The Serpent 401744 bladeless spool outdrives are built to refine handling for club and competitive racers. Designed for Project 4X and compatible with Eryx models, they remove the driveshaft blade to lower the chance of blade failure and reduce ongoing wear. Machined from high-strength spring steel, these outdrives resist wear while keeping weight down for more consistent lap times.

Engineered Flex That Absorbs Impact

These spool outdrives are precision machined to give controlled flexibility, which soaks up impact energy on knocks without bending out of shape. The bladeless layout reduces assembly play and delivers a more predictable turn-in, important for tight cornering and quick steering corrections. The lighter assembly also helps throttle response on tight tracks.

Fitment and Practical Upgrades

Primarily developed for Project 4X, the outdrives also integrate cleanly with Serpent Eryx setups that use the same spool arrangement. They make a straightforward upgrade for hobbyists aiming for stronger, lower-maintenance drivetrains when preparing for racing or frequent track use.

Yes, they will fit Project 4X cars that use the same spool interface, but check pin sizes and clearance during installation to ensure a proper fit.
No special tools are needed beyond standard RC hand tools. After fitting, verify free play and rotation to confirm the spool is centred and moves smoothly.
Spring steel offers improved fatigue resistance versus softer materials, so you should see less wear and fewer failures under typical racing loads.

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