Angle axle holder

The detail that makes the difference in a well-executed anglewinder setup

In slot preparation, small components often determine whether a car runs smoothly or with vibrations that cost tenths. The SIPA25 angle axle grub screw from Slot.it is exactly that type of piece: discreet, yet essential for the transmission of an anglewinder setup to function as it should.

Function and performance

The grub screw's mission is to secure the rear axle in its position within the support or bracket, preventing any axial movement that could result in loss of transmission, noise, or premature wear of crown gears and pinions. In an anglewinder configuration — where the motor is positioned at an angle to the rear axle — the geometry of the transmission is more demanding and requires all elements to be properly locked and aligned.

This grub screw is manufactured by Slot.it with the same precision standards that characterise the rest of its spare parts catalogue, ensuring a reliable and repeatable fit in every assembly.

Compatibility

The SIPA25 is designed for the angle axles of the Slot.it system. If you are working with anglewinder chassis, brackets, or transmission kits from the brand, this is the reference grub screw for that configuration. Before ordering, check that your axle and bracket correspond to the range compatible with this reference.

Assembly and preparation

• Ensure to clean the axle housing before assembly to avoid any grease or dirt residues preventing a proper seating.
• Tighten the grub screw with the appropriate tool, firmly but without overdoing it: excessive tightening can damage the axle or the grub screw itself.
• Check that, once assembled, the axle has no longitudinal play. If there is, review the seating before closing the chassis.
• In competition cars, it is advisable to check the condition of the grub screw after each intense session, especially on technical tracks with many direction changes.

Common mistakes

One of the most common failures is reusing a worn grub screw or one with a damaged internal hex. If the grub screw does not grip securely, the axle may move during a race and ruin the car's performance. Having spare units like the SIPA25 on hand is a common practice among the most meticulous preparers.

Frequently asked questions

What type of setup is the SIPA25 designed for?

It is specifically designed for Slot.it anglewinder configurations, where the motor is positioned at an angle to the rear axle. It is not intended for sidewinder or inline setups unless expressly specified by the manufacturer.

What tool is used to tighten this grub screw?

Slot.it grub screws typically require a small Allen key. Check the specifications of the kit or bracket you are going to assemble it on to use the correct key and avoid damaging the internal hex.

How many units are included in the package?

We recommend checking the package contents on the product sheet or contacting us if you have questions about the quantity included in this reference.

Is it necessary to use any thread locker with this grub screw?

In general, Slot.it grub screws are designed to function without a thread locker in standard use. However, in competition, some preparers apply a minimal amount of low-strength thread locker for added security. This depends on the level of demand of your setup.

The Slot.it SIPA25 axle grub screw is a precision replacement part designed for anglewinder drivetrain setups. Essential for slot car racing enthusiasts and club competitors who demand reliable axle retention and consistent power transfer. Compatible with Slot.it anglewinder axle systems, this small but critical component ensures zero axial play for optimal performance on the track.