PICK-UP GUIDE SPACERS .010" BRASS/0.25mm (10pcs)

Precision to the tenth of a millimetre: NSR guide spacers for uncompromising tuning

In the preparation of a slot car, significant advancements sometimes come in very small formats. The NSR4819 Pick-Up Guide Spacers are brass spacers of 0.25 mm (0.010") designed to accurately regulate the height at which the guide is suspended relative to the chassis. The pack includes 10 units, sufficient for multiple assemblies and comparative adjustments.

Function and performance

The height of the guide is one of the most critical —and most overlooked by less experienced enthusiasts— parameters in slot car preparation. If the guide is too high, the braids lose pressure against the rail and the car suffers power cuts on bumps or changes in track inclination. If it is too low, the guide rubs against the bottom of the rail and unnecessarily increases friction.

By interposing one or several of these spacers between the guide and the chassis, the position of the guide can be raised in increments of 0.25 mm, allowing for fine and reproducible adjustment. The chosen material, brass, provides sufficient rigidity so that the spacer does not deform under the pressure of the fixing screw, while not adding appreciable weight to the assembly.

Compatibility

These spacers are designed for NSR guide systems and are compatible with the brand's standard guide sets. Always check the diameter of the screw passage hole of your guide before installation to ensure that the spacer fits correctly.

Installation and preparation

• Remove the guide from the chassis by loosening the fixing screw.
• Insert the spacer (or several, stacked) between the guide and the chassis housing.
• Refasten the screw without overtightening to avoid deforming the brass.
• Check on the bench that the braids make uniform contact along their entire length.
• Run the car on the track and adjust by adding or removing spacers as needed.

With 10 units in the pack, you have room to try different configurations and keep spare spacers for future preparations.

Common mistakes

• Stacking too many spacers at once: raise the height in increments of one at a time and check the behaviour before adding another.
• Ignoring braid wear: a good height adjustment loses meaning if the braids are worn. Change both at the same time if necessary.
• Over-tightening the screw: brass is rigid, but disproportionate tightening can bend the spacer and nullify the adjustment.

Ideal for…

This type of spacer is especially useful for club racers seeking reproducibility in their adjustments between sessions, and for tuners working with multiple NSR cars who need to maintain consistent configurations among them. It is also valuable when racing on tracks with varying levels of wear, where the optimal guide height may vary.

Frequently asked questions

How many spacers does a typical adjustment usually require?

It depends on the chassis and the condition of the track, but in most club preparations, one or two spacers (0.25 mm or 0.50 mm total increment) is sufficient. The most important thing is to test on the track and adjust progressively.

Can multiple NSR4819 spacers be stacked?

Yes, they can be stacked. Keep in mind that with a higher guide height, there is a greater risk of the braids losing lateral tension. Stack judiciously and always check the result on the track before finalising the configuration.

Does brass add significant weight to the car?

No, not appreciably. The size and thickness of each spacer is minimal, and while brass is denser than plastic, it does not represent a relevant weight variation in the overall car.

Are they suitable for guides from other brands?

They are designed for the NSR guide system. They may work with other guides if the diameter of the screw passage hole is compatible, but it is advisable to verify this before installation.

How many spacers does the pack contain?

The NSR4819 pack includes 10 brass spacers of 0.25 mm (0.010").

NSR4819 brass pick-up guide spacers, 0.25 mm thick, pack of 10 units. Essential slot car tuning parts for precise guide height adjustment, improving pick-up contact and power delivery consistency. Compatible with NSR guide systems. Ideal for club racers and experienced slot car builders looking for repeatable setup configurations.