SlotForum banner
1 - 4 of 4 Posts

·
Registered
Joined
·
22 Posts
Discussion Starter · #1 ·
Can anyone enlighten me as to why some manufacturers' motors are so very quiet (Monogram/Revell ) while others' are quite noisy (Fly)? And then there is Scalextric whose motors are both quiet (NASCAR, Porsche GT1, TVR) and noisy (MINI). And Carerra motors make a wholly different sound all together. I prefer the quiet motors - they just give a sense of quality - as opposed to a loud whiney sound. Just wondering.
 

·
Registered
Joined
·
4,634 Posts
A lot of the noise comes from the gears - how well they mesh, and what they are made of makes a difference, metal gears seem to be louder. Greasing them can quieten em, and oiling all the wheel bearings also quietens a car generally. Have a Fly Ferrari 512 which sounded like it was carrying a bag of nails, replacing the crown gear and pinion, and reducing the rear axle slop with washers, cured it, tho its still not as quiet as cars with plastic pinions and crowns.

The material the car body is made of can resonate, you can definately hear it on some hard plastics, for example proteus lamborghini, and mrrc porsche 908.

plastic detailing not secured properly can add to the noise too.

different motors also make different amounts of sound, but I think the above factors contribute more to the level and quality of the sound.
 

·
Premium Member
Joined
·
5,672 Posts
I have one Venturi, out of six, that makes a high-pitched squeal when you come off the juice. It doesn't sound a happy bunny at all but it has lasted for ages.

I think I would miss it now if it were to be cured - little things, please little minds - as my mater says.
 

·
Registered
Joined
·
119 Posts
G'day DJ911SC
With respect to the Beach Boys, there's no such thing as Good Vibrations and Shake, Rattle and Roll has little place here as well. You ask a good question as noise is often associated with vibration which affects car handling, particiularly for low- and non-magnet cars.

There is another excellent tuning thread running somewhere here that talks about tuning motors. In particular, balancing the armature so that it spins with minimal vibrations. So 1 answer to your post is the motor often creates vibrations to rattle things around.

Then as Astro suggests, gear mesh etc also add noise. New gears, in the main, don't always mesh perfectly. You may notice a car gets quieter the more you use it? That's the gears wearing in. Often recommended tuning is to lightly glue the motor to its mount and the bearing to their carriers. Then to speed up the gears bedding in, you can remove the grease etc from a new car and apply a little toothpaste, car polish or cutting compound (take care -- just a little to start) to the gears and apply low throttle for a minute or two. Wash the car in water, relubricate and it should be quieter.
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top