Preparing for the Slot Car World Championships - How can a set screw affect the axle so much?

The 2022 ISRA Slot Car #worldchampionships are nearly upon us. I am off to Latvia soon to compete. I have started my preparation and wanted to share these tips about preparing for some of the races.
If you have #races where you have to use "handout" #chassis and #motors then there are some tips for you in this video.
I have also included footage of the #track that will be used for the world championships and you can see a #qualifying run by one of the top teams.
Here are some AMAZON links to the tools used in this video. As an Amazon Associate I earn a very small amount from qualifying purchases...
** ROTARY TOOLS **
Tack Life Cordless Rotary Tool (UK Only) - amzn.to/3xfcz07
Tack Life Cordless Rotary Tool (USA Only) - amzn.to/3S8Osde
Proxxon Rotary Tool (Collet version) - amzn.to/3fXLVRn
Proxxon Rotary Tool (3 Jaw Chuck version) - amzn.to/37yT9qC
Proxxon Rotary Tool with adjustable multi-unit power supply - amzn.to/3jIeYJW
Proxxon Micromot fixed speed with power supply (EU Only) - amzn.to/3sE8L5P
Proxxon Micromot adjustable speed without power supply (EU Only) - amzn.to/3yaUMp9
Parkside Rotary Tool (UK ONLY - Battery Powered) - amzn.to/3fYoaJ4 (I have 4 of these myself and they are excellent)
(I have 4 of these myself and they are excellent)
CleaveTech contact information:
Facebook: / cleavetech.co.uk
Instagram: / cleavetech
KZbin: / cleavetech
Web: www.cleavetech...
Email: [e-mail]
Slotblog: slotblog.net/fo...

[@carlcarlson180]

I was impressed with the axel deflection on the jig

[@Slotcartires]

Back in the 1980's era, when I raced Wing cars, we all would have axles with setscrew gears mounted to them on our cars and in our pit boxes. When checking the axles for run out I noticed that the setscrew gears would bend the axles. To counter this I would bend my axle and mark it so I knew where to position the setscrew when tightening the gears in place.

[@CleaveTech]

Good point 👍🏻. In my past before I used to glue in the gears, I sometimes was able to use the grub screw to help straighten a bent axle. I didn’t deliberately bend it in the first place though 😂.

[@Slotcartires]

@@CleaveTech There was an effort to run two setscrews back then as well. With some fooling around you could avoid bending the axle as well as helping to balance the rear axle assembly somewhat.

[@CleaveTech]

I recently built a plastic bodied car that came with 2 set screws in each wheel and the gear. Seems like the trend continued 😉😁.

[@MrKentaroMotoPI]

@@Slotcartires Yeah, we used to do the "Two Grub Dance" here in Hollywood with those pink gears. Also helped if you stripped the threads in one hole.

[@slotcardude68]

Great video, thanks!!!!

[@CleaveTech]

Thank you 🙏

[@Aladinscave]

Thanks

[@ggaspord]

Thanks!

[@CleaveTech]

Thank you very much ❤️👍🏻

[@karlobobiles2968]

Awesome video! Do you have a link to the axel checker and jig? Thanks!

[@Carfunmostly]

Thanks for the Amazon links. I purchased a rotary tool. It's a shame you can't place affiliate links though.

[@CleaveTech]

You will love the tools. Those links should be affiliate links.

[@curiousaardvark1]

Wow, those cars were seriously moving. Had a huge scalextric setup as a kid, had no idea things had progressed so much What actual speed are these cars doing ?

[@CleaveTech]

Some types of cars can easily reach 70mph on the straights. With most types of slot racing, it is not just the top speed that matters, it is cornering speed that is most important.

[@guywren4801]

Lucky dip motors?

[@richieaustin1604]

What size rear tires do you prefer on a prodution 24 car? Thanks for all you do to help everyone!

[@CleaveTech]

I maybe start a 45minute race with tyres at 17mm diameter. 👍🏻 It can depend on the type of tyre used; some tyres wear down quite quickly, whilst others hardly wear.

[@alexjenner1108]

Would it help if the gear had two set screws on opposite sides of the axle which would apply force from two directions - hopefully cancelling each other out?

[@CleaveTech]

You raise a good point and some of the hard body slot car manufacturers use 2 opposite grub screws. The problem with using 2 grub screws is that the gear or hub is then pivoting about the tips of the two set screws and will probably not be running very true to the axle.

[@stevemurch6974]

Alot of classes don't allow gluing gears on, as in ISRA. In some setups it's a major to get a glue gear and axle out without removing the motor.

[@CleaveTech]

I know of people who have used glued on gears in F1 and have used glue on angled gears 😁. A bit of a nightmare to remove though!

[@stevemurch6974]

@@CleaveTech no pain, no gain

[@stevemurch6974]

@@CleaveTech and very best of luck at the worlds, i hope to be at next years worlds

[@CleaveTech]

@@stevemurch6974 , will be great to see you if you can make it in 2023 👍🏻

[@stevemurch6974]

@@CleaveTech ill shout ya a couple beers mate

[@felicecolella6077]

What axles are those?

[@CleaveTech]

I use 3/32 Vitula axles for my 1/24 slot cars.

[@modernslots1287]

Thanks!

[@CleaveTech]

Thank you so much ☺️.