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TKART magazine Must Have | 4 bits for the pulse screwdriver recommended by the "pro" mechanics of various manufacturers: when to use them and when to (to avoid damage) absolutely not use them!
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Jacopo Colombo
02 December 2023 • 5 min. read

The pulse screwdriver makes it easier to operate on the chassis, makes it faster and saves time (as well as effort) both in the garage at home and on the track, especially when the sessions are short, close and particularly hectic. It is no coincidence that it is one of the tools favoured by professionals who operate in the most prestigious international competitions (to learn more, read "Must Have | What Top Teams Use: pulse screwdriver"). Given that on the kart the pulse screwdriver could be used to screw anything, including, absurdly, even the fastening bolt of the data logger on its support, it is important to emphasize that this tool must be used with the right precautions. This is because it can suddenly be transformed from a "friend" of the kart driver to an "enemy", especially for those who use it while not respecting the right tightening torques and not regularly replacing the small parts according to certain cycles of use. This is why, in order to provide you with a handbook on the optimal use of this tool (protecting you from damage caused by its "improper" use), we asked the professional mechanics of the official teams of some of the main manufacturers of Racing kart chassis (such as OTK Kart Group, CRG, IPKarting, Parolin Racing Kart, Sodikart and Birel ART) to tell us which are the most used sockets, what they are used for and when, on the other hand, it is better not to use them to avoid damage.

N.B. The bits for the screwdriver chuck indicated in this article all have a hex drive (1/4" - 6.35 mm), compatible with most products available on the market. In any case, we recommend that you check compatibility with your model.


Bit with 10 mm hex key

Useful for loosening or tightening nuts and bolts and M6 type screws (present on the chassis of many brands), the 10 mm hex bit was one of the most used by the mechanics interviewed (for everyone it is a must-have element even in parc ferme, to learn more read "How to | The kit of the expert mechanic at parc fermé (and all the ways of using it)"). How is it used? On Sodikart chassis, OTK Kart Group (for the various brands of the Italian company, such as Tony Kart, Kosmic Kart, LN Kart, Exprit...) and Birel ART is used for fastening the rims on hubs, both front and rear. In addition, it is also generally used for the removal of the nuts that fix the gear wheel to the rear sprocket holder of single-speed karts, thus allowing the gear to be replaced (to learn more, read "How to | How to mount the gear ratio in single-speed karts"  and "True or False | 6 quizzes on the optimal ratio of your kart"). Also, on Parolin chassis it is used to speed up the modification of the caster on the eccentric "Easy Caster". The recommended product, thanks to a total length of 150 mm, allows you to easily reach the nuts of the front and rear rims.

Indicative price

About 14 euro (VAT included)

To buy:
Photo credit Blukart

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