Savage 21 Precision 44T Delrin First Gear Technical Upgrade DSAV1644T1T by GPM  [DSAV1644T1T]

HPI Savage 21 Delrin 2speed First Gear (44T) - 1pc - GPM DSAV1644T1T
Price:
USD$11.44
Brand:
GPM
Model:
DSAV1644T1T
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Precision Delrin 44T first-gear for Savage 21 two-speed box

Manufactured as a Delrin 44T replacement for the HPI Savage 21 two-speed gearbox, this component is supplied as 1 pcs and is intended for direct-fit service or performance-minded rebuilds. The polymer construction reduces metal-on-metal wear while maintaining alignment in the factory gearbox layout.

Use this Delrin unit where reduced friction and improved wear resistance are required in the first-gear position. During installation confirm radial runout, shim stack order and axial endplay, and verify the two-speed dog alignment to prevent premature engagement issues.

Workshop notes: remove the gearbox cover using the Savage 21 service procedure, retain original bearings and shims where serviceable, and set spur and pinion backlash before final assembly. Perform controlled low-speed break-in runs and re-validate mesh and selector operation after initial bedding.

What inspection checks are critical when fitting this gear?

Check shim stack, bearing fit, axial endplay and gear mesh. Confirm the selector dog seating and that there is no lateral play affecting engagement.

Are there any special lubrication requirements for Delrin?

Apply a light, gear-compatible grease to mating surfaces; avoid heavy oils that can collect debris. Reinspect lubrication when checking mesh after break-in.

Does this part alter gearbox geometry?

The part is designed as a direct-fit replacement and should not change gearbox geometry if shims and bearings are reinstalled in their original configuration.