MG90S Servos - "Genuine Fake" Tower Pro vs Racestar Metal Geared Servos

The fake Tower Pro MG90S servos from BG used to be really good, however... they've cheapened out and now the RaceStar ones are a way better choice now as of 2020. 6x bit.ly/30xitLf Links to all of them below, press SHOW MORE to see them.
MG90S Racestar Servos:
6x bit.ly/30xitLf
4x bit.ly/2XSUB39
1x bit.ly/3cUaJFR
50x bit.ly/37ofFkR
Remember they also do plastic geared ones too, don't get caught out by buying the "cheaper ones" as they'll be plastic gears throughout and those die for a passtime.
Description:
Brand: Racerstar
Product: MG90S 9g Analog servo
Operating Voltage: 4.8V-6.0V
Stall Torque: 1.8kg/cm(4.8V ), 2.2kg/cm(6V)
Operating Speed: 0.1sec/60degree(4.8v), 0.08sec/60degree(6v)
Gear: Metal Gear
Motor Type: Coreless
Connector Wire Length: 175mm
Weight: 20g/PC
Dimension: 22.8 x 12.2 x 28.5mm
Application: For 450 RC Helicopter RC Car Boat
Features:
- Micro size
- Suitable for RC Truck, Boat, Racing Car, Helicopter and Airplane

[@RagTheNutsOff]

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[@thenatedog]

I have come home from work to realize i had my laminate iron on all day long on my wooden work desk. Occasionally left soldering iron as well. My safety protocol now is that anything that heats up in my shop is plugged into a powerstrip that also has some kind of light that is always turned on. Now i can just glance around my shop and if any lights are on i know i need to turn that power strip off.

[@Aerialdrone_gr]

Just be aware of banggood Racestar MG90S. I bought 6 of them, opened the case and surprise! All gears except for the output shaft are plastic! Also there is not any kind of bearing or brass bushing on the output shaft. I ve send email with pics to them and waiting for refund.

[@RagTheNutsOff]

Oh what! That's not on.

[@andretheriault9716]

@@RagTheNutsOff Same thing here, all plastic inside. Recent reviews on BG are reporting the same. You should add a note somewhere in the description to let your viewers know, so that its not too deceiving. Could be a good opportunity to do an update video with a new batch of BG servos, see where to good deals are at now :D

[@JorgeJimenez2020]

Very timely video and glad you did this and the teardown. I've also noticed quality issues with these servos. Will give the Racestar a try, thanks!

[@RagTheNutsOff]

Good morning Jorge, I'll be using these in anger this weekend. I'm sure they'll be fine. Matt

[@iforce2d]

Good to know. I bought some of the racerstars near the end of last year, they seemed good so bought another 12 recently.

[@RagTheNutsOff]

Morning Chris, they used to be really good. Oh well, times move on. All good in your coughing aids free NZ? Matt

[@theuglycamel8122]

Hey Matt! I had given up on these servos last fall. Had one short my BEC/ESC/Motor on a twin foamy. Brand new, out of the box. With most 9g servos, I expect 2-3 out of 10 being bad, but the last batch of these I got was 5 of 10 DOA. Thanks for the review, I'm going to give the RacerStars a try with my next build.

[@cosminjuverdeanu3671]

Hi Matt, the bushing on racestar is there to corect a factory defect ... the gear box is moving up and down because the middle gear is to small. On towerpro if you take a closer look the middle well is spot on and it will keep the top one from going down :). They did not put bras bushing because they have no friction on the plastic case .

[@mikegriffiths7487]

Phew! Just bought a 6 pack of metal gear 9g servos from Amazon. Fortunately, they have the metal bushing so seem to be the right sort. Many thanks for the video because I wouldn’t have thought about this before.

[@hoverbovver]

When walking down Nathan Road in Hong Kong in the 1990s we were regularly accosted by salesmen shouting "Get your genuine fake Rolex watches here".

[@rcpilots1291]

Brilliant advice and thanks for such detail with the breakdown,

[@bobfin4291]

Good to know Matt Thanks. Been using Corona CS-929MG's analog and DS- 929MG's digital,great about the RaceStars though magic.The 2.2ohm resistors work well on ALL .

[@RagTheNutsOff]

Hey Bob, the DS- 929MG are my absolute goto for premium models. Not broken one of those yet! Matt

[@bobfin4291]

@@RagTheNutsOff No broken one's here to

[@davidknox294]

omg ...been on the racestars since last october ,someone still buys magazines gave up on them when they went to £6 ish in the shops ....nice one matt !!

[@RagTheNutsOff]

Fantastic to hear David. Matt

[@tedre191]

DO NOT BUY THE RACESTAR ANYMORE! Ordered 6x Racestar through your link but the internals are way different. All plastic except the last gear now, and no bushing. Either I got unlucky, or Racestar started shipping cheaper clone.

[@RagTheNutsOff]

Howdy Andre, ok that's not right. Send their support a photo of the insides of what you have got and a screenshot and link to this video and see what they say. Matt

[@julianhumphrey4843]

glad i got on the racestar servo`s early on

[@stuartabella1329]

the original Tower Pro MG90s have the same gear set up. There is that one nylon gear to serve as shock cushon for the motor pinion. They have real custom sized ball bearings as well (8x5x2). And they have QC markings and production sticker from the inside

[@RagTheNutsOff]

OoooO ironically I've never seen a real one Stuart. Matt

[@grayback1857]

Just bought a whole bunch of these rascestar servos from Bangood. Delivered today. No metal bush and only the first gear metal. Held together by two screws. Nothing like the quality in your video. Bangood stuff previously good. Heigh Ho.

[@adamhodge3646]

Yep same here.

[@EnglishTurbines]

The Ratel will become your favourite Matt, great camera, even in bright sun and no ND filter...and I'm picky about what I use...lol.

[@davidlondon3111]

Thanks Matt - I can recommend the ND filter for the Caddx camera

[@RagTheNutsOff]

Thanks for the tip David

[@janszczypka5971]

That is interesting, my Tower Pro MG090s has a bushing and the motor has a metal gear

[@RagTheNutsOff]

Yea they're all basically fake ones and they vary massively. Matt

[@Luka1180]

@@RagTheNutsOff I need a total of ten of them of high quality for VR gloves. What do you recommend??

[@bartnathan7641]

Any good all metal [inexpensive] alternatives now?

[@mikegriffiths7487]

I learned something else about these servos - the hard way. I decided to try a 2S Lipo to power the receiver in a Lidl slope soarer, so no motor and no ESC. The receiver has no problem with 8.4V from a fully charged 2S but I didn’t realise that this voltage would be passed straight to the servos, which have a limit of 6V apparently. The penny dropped when one of the second pair I tried started smoking rather well! Four new servos ruined but another lesson learned 🤕

[@termite2691]

The Racerstar 4 pack from Banggood that I received, same as the ones in your link above, were fake. Metal output gear but all the other gears were plastic and no bearings at all so lots of slop. Total junk really ... but for 9 quid what do you expect. Don't use them where it matters I guess.

[@johnneh2]

Yep same here. Received 6 of them today and all bloody plastic apart from the output. Not a happy bunny :(

[@bluegizmo1983]

Yeah I bought some Tower Pro MG90S servo's and they didn't have bushings on the output shaft and only had metal gears on the motor and the final output, all the rest of the gears were plastic.

[@arduav1]

Is they really a coreless motor in it?

[@noahd8673]

I saw that these are analog servos, and that that digital servos can move a lot faster and are more accurate, are there any relatively inexpensive digital servos?

[@RagTheNutsOff]

Howdy, not that I know of. I happy with the super cheap ones for most of my work. Matt

[@VincentFischer]

My MG30S from aliexpress (none racerstar) have a nylon/plastic gear near the motor too. Chinese lottery as always, glad I won this time

[@RagTheNutsOff]

Good choice!

[@noahd8673]

Can you do a comparison between the racestar and the actual towerpro servos to see if there is a difference?

[@RagTheNutsOff]

Ironically I don't think they make them anymore! Matt

[@prophoto1675]

thinking of replacing the stock servos on my rnger 1600 with these Racestars whould i be upping to 12g or will the 9g do just fine?

[@RagTheNutsOff]

Howdy, they're 12g ones, which are the same size as 9g servos. Matt

[@prophoto1675]

@@RagTheNutsOff the 12g's are almost twice the price will the 9g work or would i be better off with the 12g ?

[@prophoto1675]

@@RagTheNutsOff also cant seem to find the 12g your link is for the 9g

[@hifinsword]

It's too hard to keep up with which BG MG90S models will be good and which ones are going to die on you, I'll be running with Corona, HiTec or Freewing for NORMAL voltage servos, or ProModel for HV servos. Too much to keep up with and too much at stake with my scratch-built models.

[@tk-maker]

instead of compare the build, can compare the performance difference? stress test it?

[@RobisonRacing68]

You couldn't have published this two weeks ago?? I bought 6 of the Tower Pros last week! LOL!!!

[@frewon9]

Ive notice the Fake one only have a metal gear only on the servo horn part and not all the gears

[@NoAgendaFPV]

Ratels are a great cameras, I just got a Foxeer Toothless 2 Nano that seems promising.

[@NoAgendaFPV]

I also just looked at my last batch of MG90S servos, they're "TIAKONGRC" and have the brass-ish bushing and metal gears throughout, but have the translucent case too.

[@stealthwingsrc1094]

The Caddx is the perfect cam for the T-TRAXX ;)

[@stevefox3763]

i ordered some of the 'Racerstar' servos (they are called that and not 'Racestar') a few weeks ago to try out as i was looking for something with much less play in them than the tower pros have as i want them for a 450 CP Heli. I have been very impressed with them, ALL 6 of the servos i received have absolutely no play in them what-so-ever and second Matts endorsement of these servos. now, as time goes on and the machinery used to make them wears, we might start to see poorer tolerances but seriously, there isn't even 1/4mm of slop at the end of the servo arm in the ones i have received :)

[@RagTheNutsOff]

Hey Steve, thats really good to hear. Matt

[@stevefox3763]

@@RagTheNutsOff I've got millions of the tower pro servos but from now on I'll be buying the racerstar's. Always ays been happy with their motors and esc's and thought I'd try the servos and I've not been disappointed 😊

[@digeolrc8586]

Which Purple or oeange fake one?

[@braveheart5280]

That plastic gear cannot strip, there is not enough torgue from the motor. The plastic gear is used to prevent wear at this high rpm area, it also is used to lower gear noise.

[@did3d523]

why 2 metal you dont explain

[@jimmynoname4089]

Huh, i just picked up 3 dozen of the racestars about 2 months ago. I was happy with my choice

[@RagTheNutsOff]

Good times Jimmy! Matt

[@jimmynoname4089]

RagTheNutsOff now to fine time to use them....

[@alphaadhito]

You know that it's a serious issue when you runs out of servo in your home, lol

[@RagTheNutsOff]

lol, it is indeed!

[@Caroline_Tyler]

That's interesting! I got 12 of these 'fake' Tower Pro servos in last month from BangGood and they look the same as the ones I bought in 2019. I just opened one up after seeing this and all the gears were metal (checked with a meter) and the label is not that tiny one on yours. However the touque is way down on what they used to be and the positioning is unreliable - really unreliable. I think they are sourcing them from all over the place and just cannot be trusted anymore.

[@terrymurphy562]

Not the same anymore Matt, these servos have gone to a very poor standard now unfortunately. Top cog is the only bit of metal in the servo. Just not sure why banggood do it, just charge a bit more for them and keep the quality.

[@SkyrisUK]

I wouldn't Touch either of those servos. Get the EMAX ES08MAii instead.. why cheap out on an aircraft costing a couple of hundred quid all up and put cheapo servos in it .. Like putting Remolds on a sports car . ya just dont .

[@RagTheNutsOff]

Morning SkyrisUK, you say that, but only until recently when I hot a tree so hard, I killed both servos (4S, full knackers, both servos completely stripped where it hit that hard), the older TP ones had been working great, with the only suspect ones coming from eBay and they looked a lot like what they do here. Matt

[@tomf3150]

That plastic gear is here for speed, not torque.

[@wrongbirthday2]

oh my....got tons of these fake MG90S yeah plastic!

[@jzflmr6089]

i have both too, and the black ones run quieter..

[@RagTheNutsOff]

Thats fab to hear

[@itsallaboutthekarma5881]

The racerstar is an analog servo, while the tower pros are digital

[@SladkaPritomnost]

What makes "towerpro" ones digital? kzbin.info/www/bejne/e3nVkn53ps93ecU

[@FasterThanJesus666]

Bought these at the end of 2020 because of this review, they have 2 metal gears all others are plastic. :( Don't buy these anymore.

[@RagTheNutsOff]

Yea see the other comments, they've changed them several times since. Even the racestar ones have gone to shit too

[@FasterThanJesus666]

@@RagTheNutsOff yeah no worries mate, could your tell me what you would recommend that doesn't break the bank

[@did3d523]

hard to find good servo on amazon

[@kostyash3079]

i think not necesary metal wheel on motor course the weak place is small wheel of bigger plastic gear wheel ..

[@chopperharly]

the new mg90s are junk bought some and totally unusable nice choice to swap with racerstar cheers Matt

[@RagTheNutsOff]

Morning Chris, a stark different. Glad you're getting on with the others too. Matt

[@magicsmokemitlothar7377]

at this place the Plastik Gear is Spinning fast but it doesnt need to sustain a Lot of talk

[@Dragonewiz]

THE TOWER ONES ALL BURNT UP ON ME JUST TESTING THEM ON SERVO TESTER THEY DO HAVE ALL METAL GEARS BUT BOARD JUST GETS HOT AND BURN-OUT ALL 12 OF THEM I BOUGHT ...SAD.... WON'T BUY THESE AGAIN...

[@teamblacksheep-]

Mine mg90s from last year have metal gear

[@RagTheNutsOff]

Morning Gurjeet, yes mine too! Thats why I was curious, they used to be really, really good. I've been through +200 of them. Matt

[@DudeBoerGaming]

Plastic gear....you didnt convince me :.(

[@tonyaudsley4342]

I bought 12 of these from Banggood and all but the top gear are plastic .. I have used 4 of these and all ended up stripping the gears now I am afraid to use them again .. these bastards lie through their back teeth

[@3DRC-707]

Fuck..... gotta pull the ranger1600 apart now and see 😒

[@RagTheNutsOff]

Errr where thats going, yea I'd have a nose too. Balls! I feel your pain. Matt

[@paulg.25]

!!! 01-NOV-2020 UPDATE: Racerstar MG90S has gone fake too !!! All plastic gears except for the last one on top. Very sad to see this fraudulent trend spreading ... I guess the quest for affordable metal gear servos continues once more 😉

[@ilkkasorsa9778]

Hey! I too can confirm the products you have those affiliate links for are pure shit and nothing to do with the product you are promoting so surely it might be a time to update this video. ? I left a complaint to Banggood too. Have they responded to anyone else?

[@RagTheNutsOff]

Howdy, I'm sure you're aware once a video is uploaded to KZbin it cannot be altered. Matt

[@carlharrison3637]

Chinese metal is more commonly known as Chinesium

[@RagTheNutsOff]

LMFAO, so it is Carl 😁👍

[@garnetnelson1419]

My goodness this guy doesn’t take a breath just bla bla bla bla calm down please.

[@did3d523]

bangood donc make servo it s stupid like said servo of amazon are good...

[@dustinplee5067]

Is the MG90S sevros considered a ultra Micro sevro