I've heard the noise may be due to the gears and may be dealt with by changing the pinion gear. There are some posts on the forum about this.

 

If you remove the bodies of all three cars, is the Porsche still more noisy? Start with the bodies off to figure out what parts are causing the noise. It probably is the gear noise which can be fixed by setting the gear mesh spacing properly. With regard to the tires, on the RS cars that have 2 thin ribs on the wheel, it's best to fill between the ribs with some foam and then put the tire on. Of course it's even better to glue and true the tires after that depending on the level of performance you want to achieve.

 

I only have a Marcos, the noise was pretty bad. There are topics in this forum that talk about the Revo noise, especially the early models. As mattew77 said the pinion had a bad profile. Mine was sounding like an old coffee bean grinder...no joking.

if you don't want to change the pinion with a new one, one the solution is to had a washer between the chassis and the motor mount like I did:

With up to 0.5mm thichness there were no effect, but with 0.75mm or 1mm, the sound quality is improved significantly,

I've a new pinion on order, I would be able to tell more once i receive it.

In your case you may have defective wheels, it easy to switch them between the models to see if it is the case.

As Dingleberry said, it can be a body vibration as well.

 

I had trouble with the spur gear on a BRM/TTS car. Info gleaned from another forum confirmed.
Replaced with S-419A gear and all was well...er...quiet.

 

Older Porsche GT2 chassis had a smaller opening for the motor and lacked the thin shimm that later models do have between the motor and motor holder.
I do believe that part/shimm can be ordered seperately. Updated main chassis plate with enlarged hole for motor also available...and if not you can always DYZ.

With kind regards
Tamar

 

I haven't bought anything by Revoslot yet, but remain most impressed by the authenticity of the Porsche. From photos I've seen, it looks indistinguishable from the 1:1. I note from Pendle's website today that the gold-coloured Warsteiner car has been launched, too. Beautiful.

As an aside, I've just watched the closing stages of Le Mans, 1998. Can't recall a time when a winner was more travel-stained: a car for model-makers after realism to consider.

 

Enjoyed 98, the mercs looked great and the Toyotas were mega quick. I didn't hold out much hope for the Mobil gt1s, but the old adage always applies, to finish first, first you must finish. Bit of a naughty one 98,had to skive three days off teacher training college and take three year old son with me, wife was away at a trade fair in New York, she flew into Orly Friday morning and train to LM Friday afternoon for the race.

 

...Can't recall a time when a winner was more travel-stained: a car for model-makers after realism to consider.

Agree!! That would be amazing, but you wouldn't know what car it was it was sooo dirty!

Exoto make some exquisite "Finish Line Excess" die cast models. This one is just amazing!

 

Dingleberry

Many thanks for the above post. That Exoto Ford is extraordinary. A lot of skill is needed to make that. Some of my models have ended up looking the same, but quite unintentionally, usually because of feline intervention.

 

I haven't bought anything by Revoslot yet, but remain most impressed by the authenticity of the Porsche. From photos I've seen, it looks indistinguishable from the 1:1. I note from Pendle's website today that the gold-coloured Warsteiner car has been launched, too. Beautiful.

As an aside, I've just watched the closing stages of Le Mans, 1998. Can't recall a time when a winner was more travel-stained: a car for model-makers after realism to consider.

The thing with Revoslot is..if you buy "just" one it will always be the "oddball " in your collection of RTR 1/32nd cars, 3mm axles, metal chassis and totally different wheels.
But if you buy two..or more and race them on any type of track without needing to change set-up and still have a blast driving them ...you get to appreciate them more and more.

As for finish-line realism
Just how long do you think this "showroom" shine on my new Revoslot Porsche will last before I apply weathering to make it look like this

By the way the Toyota picked up its fair share of patina at Le Mans, but on Toyota red it just doesn't stand out as much as on Porsche Weiss

Got my annual fix at Le Mans between 1996 and 2006..never missed a beat...what a decade

With kind regards
Tamar

 

If you remove the bodies of all three cars, is the Porsche still more noisy? Start with the bodies off to figure out what parts are causing the noise. It probably is the gear noise which can be fixed by setting the gear mesh spacing properly. With regard to the tires, on the RS cars that have 2 thin ribs on the wheel, it's best to fill between the ribs with some foam and then put the tire on. Of course it's even better to glue and true the tires after that depending on the level of performance you want to achieve.

When I lift all 3 Revo's rear wheels and throttle up, the Porsche actually has a little less whine that the Toyota and Marcos - so I think I can rule out the gear noise and motor shim. The gear whine is accentuated only slightly by the body-to-chassis music-box affect - on all three cars - but this is tolerable - only slightly more than the most of the fleet - but less than a few of the fleet.

From another forum discussion, I added gaskets to reduce metal-to-metal contact points on the Porsche only. This doesn't seem to have much affect.

The chassis to track appears adequate on all three cars, but the tire OD seems to extend less from the wheel OD on the Porsce than the other two Revos. So I'm hoping tires for Revo hubs of a little more OD will quieten what appears to be road noise, rather than gear or body noise. I get them in a week and will report back.

 

No offense Perrotoro, but you haven't answered the Golden Question... When you run the 3 cars Without Bodies, does the Porsche still make noise?

Youv'e come here for help and support in solving an issue you have, have received guidance to quickly determine factors at play, and haven't accepted the guidance it seems...

I hope you figure it out so you can enjoy your car.

 

Ding,

After you mentioned running all 3 without bodies, you (along with 2 others) pointed at the likely hood of gear noise. So by my indications of lifting the rear wheels of all 3 cars (bodies on) and applying throttle and noting that the bad actor (the Porsche) was quieter than the other two in this mode - I thought the logical inference there is that the gear noise is not likely the culprit.

With nearly all the replies pointing at gear noise, including your own that followed your bodies off request, I went after gear noise as the culprit. With bodies on, I indicated the Porsche was actually the quieter of the three. I think we can infer from this that the Porsche would be as quiet or quieter than the other two with bodies off. So in my mind - right or wrong - I had satisfied thhe bodies-on/bodies-off request - at least relative to gear noise only.

With that said, the Porsche, that is quieter than the other two with rear wheels lifted, is noisier than the other two on the track - even with the
the body-off the Porsche. The Porsche picks up a rumble noise on the track that the other two do not.

So I can still run the other two without bodies, but let me know what I'd be looking for - other than gear noise, if I were to do that.

Theres's no competitive racing in my region of the country. I basically set all the cars (80+/- currently) at the fastest Carrera CU speed at which my great nephew and great niece will stay slotted most of the time - even in the harder curves. I do run them at full CU speed occasionally and I do like quiet - like everyone else. However, for my home racing, I don't think I'll go so far as filling the wheel flanges w foam nor gluing-and-truing. At least not until something competitive comes along.

I've ordered new wheels, bearings, and axle. And I've ordered ST1501 and 1502 tires to try along with the QS's. I hope this will help with the road rumble, but I'm not out too much if not.

Sorry for not addressing all three cars without bodies - thought I had the inference (gear noise) addressed in another manner.

 

Tamar

Thanks for the above pictures. The travel-stained Porsche is a wonderful mess. Just as a car should be after pounding around the Sarthe for 24 hours.

Perrotoro

I have a few slot cars that are annoyingly noisy. With all but two, changing all four tyres has cured the problem. The two that continue to annoy remain a mystery - for now at least. Both sound similar to Formula E cars: dry and whining. Application of oil to the usual moving parts has made no difference. Ditto a change of tyres.

Beginning to suspect the motor, but I remain in ignorance.

 

Perrotoro - I understand your process... but the axle can have slop in it that you don't notice by just lifting the rear of the car up off the track. That's why running it without the body tells you a lot more. Slop can be from a left hand turn or a right hand turn only, and you wouldn't know until you run it. You also get to see the gear train while its running and can tell if something is out of whack immediately. When the mass of the entire axle is spinning at high revs, the centrifugal forces tend to keep the parts spinning in place unless a greater mass is exerted on it to move in a given direction.

If the axle and wheels are all good (no bent wheel, or off axis a tad) then it's most likely the tires. I've noticed on my track I don't like cars with low profile rubber. My track is very technical - there's bumps from track pieces being a mil taller than the other, banked curve and elevation change. The track loves a car that rolls on all 4 tires and the more cushion in the tire the smoother the ride.

 

Dang Ding - your talking in circles. You guys helped me (mostly) eliminate gear noise. After that, I noted that only the Porsche exhibited rumble on the track - this was with bodies on all 3 cars. I took the body off the Porsche only - to partially satisfy your indications and of course it still rumbled. I don't think if I take the bodies off the two that didn't rumble with bodies-on will rumble with bodies-off - right? Taking the bodies off would be an even less "greater mass exerted". I'd bet a case these two won't rumble without bodies.

I stated I ordered all new rear components. This won't be too expensive of a try to eliminate bearing slop, bent axle, poor tires. I may try a new set of wheels or swap out with the quiet cars.

Anyway, if I'm missing something that taking the other two bodies off will do, relative to what we know now, please advise specifically what I'd be looking for.

 

if you have driven the porsche with the body off and it still rumbles it sounds a bit like the pod screws are loose or the thread is stripped in one causing vibration

 

On my Revo GT2 Porsche I replaced the brass pinion with a Plafit pinion and the gear noise was no longer there

 

Just got my 333SP , cant say theres excessive noise, but not Whisper quiet either. I like the the rubber buffers in the body mounts which is a neat touch. Tyres were fairly close, and a quick scrub some sand paper and they are 90% to race ready. Only downside is that the spur gear doesnt seem totally concentric, a little tight on one side.

 

Thanks crustypop, TonyA, and Albion.

TonyA: from early replies, I'm resonably confident gear noise is not my main problem. None of my three Revos are whisper quiet gear-wise - but the Porsche is probably the quietest in this respect. But when you put the Porsche on the track, the road noise is exorbitant - but the other two are not. I would like the Plafit pinion spec to try - after I go after road noise, if you wouldn't mind posting

crustypop: there was a video on this or another forum about putting gaskets or rubber/foam washers at metal-to-metal contact points on the Revos. I did this with the Porsche - to no avail. As part of this process, I think I have the screws reasonably tight, but will double check. After that, I will try bearings, axle, tires. After that I may try new wheels or swap some over from the Marcos or Toyota - I think I'll go try that this morning.

Albion: I replaced the stock tires with Quick Slicks for Revo (TS43 and RS75) on all three Revos. This improved handling immensely on all three, but not Road noise on the Porsche. I think I have the old Porsche, so I have another set of RS75's ordered to try. I also have some ST1501's (also for Revo) ordered - these have a slightly larger OD and I hope will help muffle road noise - along with the new bearings and axle mentioned above.

Thanks all! Let me know if there's another try I'm missing.

 

Just did mine on the weekend. Had no major issues but the pans on the chassis rattled no matter what.
I used the advised gorilla tape 4 tiny square pieces and shaved on the outer edges of the chassis. Just to cover the space where the screws go through and then make sure to punch out the hole and ensure there is no tape in the hole,,, very important. This got rid of the unwanted noise right away. There was a bit of tire noise but it disappeared shortly after. Even trued tires of the urethane or rubber will find their own sweet spot after a few laps.

Bob

 

We run on wood tracks and if the wheels/tires/axles have any runout you can clearly hear a drumming noise. I only have one RevoSlot car and that is a Toyota GT-One. The body and pod screws are slightly loose and I have some packing tape across the chassis and pod. The car makes almost no noise at all beyond a slight rattle. Normally I glue the tires and true them using a Hudy machine, but I have been using the car to evaluate some special prototype tires. Some of the tires can't be trued, so I have been testing all of the tires "as is". A very soft tire will make less noise and may even help to dampen noises that originate elsewhere, however soft tires will create extra drag and actually bog the car down.

One experiment that you might try is to swap the wheels and tires from another car.

 

Gents, as I'm digging deeper and deeper into the Revoslot range...here's met 2 cts.

Unfortunately the only Revoslot I don't have in my personal stock is the Porsche GT2, I did do some test runs with the Porsche GT2 and I do have all the rest of the cars.
So far I've tested them on wood, Carrera and Ninco tracks.

What you do have to take into account is that all Revoslot cars, by design, run and rest on all 4 wheels.
( the design philosophy being that, as they are heavier cars, running on ballbearing axles/wheels gives less resistance than running on the guide)
As such having all wheels, axles bearings etc etc aligned, square and all 4 tyres treud is more important than on your regular plastic chassied cars.

Another difference with the Revo chassis is that the motor holder can be moved closer to and further from the rear axle. No need for fixed diameter pinions and gears, but...

...it also means that the motor can be rotated slightly, so checking and setting the motor position is also more important to maintain a good mesh than on plastic chassied cars.
Last but not least, the fact that Revoslot cars have aluminium chassis doesn't mean you shouldn't check if they're flat and straight.
During fabrication they are machined, handled and assembled by humans....so same room for error and deformation as with plastic chassied cars.
Now Revoslot has a pretty good reputation for quality control, but as tolerances on the metal chassis are tighter than on plastic cars, small deformations have bigger consequences.

With the Porsche GT2 being the "oldest" design in the range there are some differences from all the other cars that can cause more noise, vibration rattle etc etc.

1 They were released with narrower rear wheels and tyres and these are more prone to deformation in the corners.
2 Early versions had a tighter opening for the motor and lacked the motor shim that is now stock on all Revo cars. Without the spacer the motor can start to give vibrations to the chassis.

3 The Porsche GT2 is one of but 2 chassis where the rear screws are mounted through a hole in the bedpans.. not a sliding slot as with most other cars. (The other chassis being the new Porsche GT1)

4 The Porsche GT2 has the shortest wheelbase (70,6 mm) of all Revoslot cars. So if all 4 wheels are not perfectly round it will hop earlier than longer wheelbase cars.

5 The Porsche GT2 also has the shortest guidebase (82,5 mm) of all Revoslot cars...but the guide sticks out further in front of the front axle than most other Revoslot cars, same consequences as with item 4.

Noise, resonance, vibration is usually the result of imbalance or tension building up and being released.
As RichD mentioned a common setup trick is to loosen the Bed pan screws, which gives the body some float.. improves handling and can reduce noise.
Last but not least, a drop of oil where you guys put tape can also work wonders.

For those running a Porsche GT2, let me assure you that things will get better the longer your run your cars, more metal parts on the chassis just means that running them in..takes longer.
In some of the clubs that have been running Revoslots for some time..the Porsche GT2's definitely can hold their ground with the other GT2's.

Hope this helps

With kind regards
Tamar

 

Perrotoro - which new wheels did you get for the Porsche? Did you go with a wider wheel? It's something I want to do to mine.

 

Just did mine on the weekend. Had no major issues but the pans on the chassis rattled no matter what.
I used the advised gorilla tape 4 tiny square pieces and shaved on the outer edges of the chassis. Just to cover the space where the screws go through and then make sure to punch out the hole and ensure there is no tape in the hole,,, very important. This got rid of the unwanted noise right away. There was a bit of tire noise but it disappeared shortly after. Even trued tires of the urethane or rubber will find their own sweet spot after a few laps.

Bob

Hi Bob

is there a link to the tip about 4 tiny squares of Gorilla tape - with pictures so I can see where they go.... thanks David