Screw Fixing Guide

NSR4845 Guide: Screw Fixing, Low Profile and Short Blade for Precision Slot

The NSR4845 Screw Fixing Guide is a specific spare part from NSR that combines a low profile and short blade for those seeking direct car response on the track. The screw fixing ensures a firm hold without unwanted play, resulting in greater stability in corners and more predictable handling.

Function and Performance

The guide is the component that maintains the car's contact with the track and transmits direction in each corner. The low profile design reduces drag and allows for closer proximity of the chassis to the ground, improving the overall centre of gravity. The short blade offers a livelier and more direct response, especially appreciated on technical circuits with tight corners or chicanes.

The screw fixing system, as opposed to magnetic or bayonet fixing, provides a clear advantage in competition: it eliminates unwanted lateral movement of the guide, which is particularly noticeable on fast tracks or with abrupt lane changes.

Compatibility

This guide is designed to be mounted on NSR chassis that accept screw fixing. It is compatible with the Universal track (Scalextric, Ninco) and the Sport track (Scaleauto, Slot.it). Before installation, check that your chassis has the appropriate housing for this type of fixing and that the depth of your track's rail is correct for the low profile.

Assembly and Preparation

Assembly is straightforward, but attention should be paid to a few details:

• Ensure that the fixing screw is tightened properly but without forcing the plastic of the chassis.
• Check that the guide rotates freely in its housing once fixed: it should have sufficient lateral movement to follow the track without getting stuck.
• Inspect the condition of the braids when changing the guide; this is the ideal time to replace them if they show wear.
• In competition chassis, some preparers add a small amount of lubricant to the pivot to reduce friction.

Common Errors

• Confusing the orientation of the profile: the low profile must be oriented towards the bottom of the track, not upwards.
• Over-tightening the screw: this can block the rotation of the guide and cause the car to derail in corners.
• Mixing fixing systems: do not attempt to use this guide on chassis prepared for bayonet fixing without the corresponding adapter.

Frequently Asked Questions

What is the difference between low profile and standard profile?

The low profile has a shorter blade height, bringing the chassis closer to the ground and reducing lateral roll. It is common in competition setups where the lowest possible centre of gravity is sought.

What is the purpose of the short blade compared to the long blade?

The short blade offers a quicker and more direct response to the track, ideal for technical circuits. The long blade, on the other hand, is more forgiving on tracks with wide lanes or on straights with gentle direction changes.

Is it compatible with Carrera tracks?

Carrera tracks have specific rail dimensions. Check the depth and width of your track's rail before installing this guide, as the low profile may not make sufficient contact on some systems.

Do I need to change the braids when installing this guide?

It is not mandatory, but it is highly recommended to take advantage of the disassembly to check the condition of the braids. If they show wear or poor conductivity, it is the ideal time to renew them along with the guide.

How many units are included in the blister?

The official NSR specification will detail the exact contents of the blister. Check the product description or contact us if you need to confirm it before your order.

The NSR4845 is a screw-fix, low-profile, short-blade guide designed for slot car racing. Compatible with Universal (Scalextric, Ninco) and Sport (Scaleauto, Slot.it) track systems, it delivers direct steering response and firm rail contact, making it a go-to choice for club racers and performance-oriented hobbyists looking to fine-tune their NSR chassis setup.