Yamaha Aerox & Jog RR 50cc Malossi Tuning Guide
Categories: 50cc Tuning, Featured, General Tuning
Written By: admin
The Yamaha Aerox and the Jog RR are the flagship performance Yamaha scooters, both featuring the highly tuneable Minerelli LC 50cc engine which responds very well to tuning with Malossi products. Yamaha AC powered bikes like the Neos, BWS, Zuma and Jog R are also very similar, but do not make as much power as the LC models, but this guide still applies to them.
Extremely early Yamaha scooters (I know the original Billywhizz for instance) had a restricted CDI unit, as far as I’m aware the new ones do not anymore, and won’t need a replacement CDI unless you install really high revving / high power race 70cc kits, which I do not recommend doing for road use unless you like rebuilding your Yamaha scooter a lot. I’ve had a relatively high revving Hebo kit installed in a fairly new AC engine before combined with a Hebo exhaust and it ran fine without a replacement CDI.
1. Yamaha Scooter Tuning: Malossi Variator
I always prefer to start tuning Yamaha / Minerelli engine based scooters by replacing the Variator with a Malossi Variator to start with. This is because, in my opinion, the standard Variator isn’t the best unit in the world and it seems to cause bogging at 30mph and struggles to keep the engine spinning at its optimum rpm (where it makes peak power). Although the standard Variator is fine on normal derestricted Yamaha scooters, when you start tuning you tend to end up with a narrower power band (the region where your scooter makes the most power) and since the standard Variator struggles to keep the rpm from fluctuating outside this range, causing bogging, a replacement performance Malossi Variator should be fitted before anything else.
2. Yamaha Scooter Tuning: Giannelli Exhaust
As with nearly every Malossi tuning guide I’ve written, I fit Giannelli exhausts 99% of the time for 3 basic reasons:
Cost: Giannelli exhausts are available from £88 for the Giannelli Extra and £117 for the Giannelli Reverse. Giannelli exhausts might not be the cheapest on the market, but the cheapest isn’t the best and they are by far from the most expensive exhausts available.
Power: Giannelli are very well performing exhausts, Giannelli’s perform equally well on both standard 50cc cylinders and Malossi tuning 70cc big bore kits.
Warranty: Giannelli’s are e-marked and legal. Although hardly anyone cares about fitting “race use only” parts, the main benefit this actually gives you is the fact they come with a warranty, race use only parts do not.
3. Yamaha Scooter Tuning: Malossi Big Bore 70cc kit
As per usual, I always recommend fitting Malossi tuning 70cc big bore kits. Malossi make the best tuning parts on the market. The Malossi tuning cast iron 70cc big bore kit is £158 in the UK and is the best value for money road cylinder kit available in my opinion; it makes the best combination of power, price and reliability. Malossi tuning also produce the MHR Replica kit which is an alloy barrel and nickasil plated cylinder designed to be a road going replica of the super power MHR Team race kits (which make 18bhp+ but are only really suitable for race use as they require another £2000 or so of parts alongside it to run properly). The MHR Replica makes a little bit more power than the cast iron kit, but in my opinion, not enough to warrant buying one for a road scooter that does the miles. If a cast iron one blows up, you can just get these rebored and a new piston, if an alloy kit blows up you need new nickasil plating and a piston, which costs almost as much as a brand new kit.
I did mention I have used Hebo kits and exhausts in the past on these engines with some success, but I wouldn’t recommend using them because they’re all alloy/nickasil barrels with a single ring piston. This is great for high revving power (due to less friction on the cylinder) but not so good for reliability and you’ll need to replace the piston often compared to the Malossi big bore kits. When combined with the Hebo exhausts, these kits are really high revving and make bucket loads of power yes, but are in turn, more difficult to setup (unless you have a dynamometer in your back yard). Also, my biggest issue is Hebo UK are possibly the worst suppliers I’ve ever dealt with when working in the scooter industry, poor stock keeping and make too many false promises about deliveries, waiting 6 months for replacement cylinder kits is totally unacceptable in my opinion. They used to have a guy called Colin working there who was a genuine bloke 100% concerned about his customers, but after he parted ways with them, Hebo UK have gone downhill rather sharpish in my opinion.
August 24th, 2008 at 12:58 pm
what is the bets exhust to get for my yamaha neos 50cc 03 plate.
August 25th, 2008 at 11:29 am
I am looking to tune my Aerox, I’ve had it deristricted and its just capable of 50mph.
I’m looking to stick a performance exahust on, one of the more expensive and reputable brands as described.
They don’t come with rollers and/or carb jets and rely on you to buy them seperately (obviously different combinations will tune it differently.
Only problem is I don’t know what the standard sizes are to get the best performance from it, I know I need lighter rollers and a bigger jet size for increased fuel flow but don’t know the ones that come as standard on the bike.
If anyone knows of the sizes that work well please shoot an email to me.
Ideally I’m looking for better top end speed, and an acceleration increase.
Thanks,
August 26th, 2008 at 11:26 am
i have a yamaha aeroz 05 plate had i derestricted and new rollers and sports exhaust but ever since i have had this done my acceleration has decreased does anyone know how i could get better acceleration out of my aerox thanks write in !
August 26th, 2008 at 12:19 pm
http://forums.tunemyscooter.com/
http://forums.tunemyscooter.com/
http://forums.tunemyscooter.com/
http://forums.tunemyscooter.com/
http://forums.tunemyscooter.com/
Just incase you’ve all missed the previous links on the page!
September 4th, 2008 at 9:38 am
best rollers 4 yamaha aerox are mallosi 4.2 grams or less heavy one’s are no good
October 1st, 2008 at 3:11 pm
yeah i got a yamaha neos and tuned it to fuck it does about 80 and is 50cc beat that I dare ya!!!!!!!!!!!!!!!!!!
October 8th, 2008 at 4:33 pm
iv got an aerox that does 87 mph on a flat, havent even put my 70cc bore kit in…yet! haha, think tht smashes ur neos bro
October 13th, 2008 at 7:18 pm
hey jeremy how du manage that /what with den
October 13th, 2008 at 7:33 pm
He’s taking the piss you retard lol
October 16th, 2008 at 12:29 pm
I can get 75 - 80 on a good day out of my aerox 50
Giannelli Reverse
Malossi MHR Variator
Malossi Delta Clutch 107mm
Speedline Race 28mm Carb
Malossi race crankshaft 12mm
Few more bits that dont make much difference
October 17th, 2008 at 4:01 am
I’m aussie my yamaha aeorx does around 100 km/h on flat.
October 18th, 2008 at 6:05 pm
u must be having a laugh! do you mean kmh ?
October 31st, 2008 at 8:55 pm
Hi I was wondering would a 21mm Carb be ok for Yamaha Aerox 50cc
November 7th, 2008 at 10:47 pm
If a Rox is tuned well ,they can go very hard,there are so many vids on youtube to prove that…I think they are still one of the best scooters to tune,very fast….
November 11th, 2008 at 7:26 pm
Hello.
In Denmark we have the best test with Malossi MHR Team Speed - My aerox does about 22 HP and its not optimated AT ALL. Just “plug ‘n play”.
A friend of mine have an Benelli K2 - allso with Aerox motor on it - it did danish record with great 36.xx HP (Team Speed and NOS)
Heres a link with my little racer: http://www.scootergalleri.dk/html/gal_visbil.asp?ID=196373&ipc=601464
But I’ve wonder to trade it for an Yamaha Jog RR (with allmost same parts) or an ZIP SP - caus I want to Join the Danish National League
November 11th, 2008 at 9:52 pm
i have a aerox that run 120 kmh here in Aruba
i have won a race with a banshee 1/4 mile and full mile
December 29th, 2008 at 2:37 pm
i have a yamaha aerox 58plate does 70 mph but is crap off the start because my jet is to small
does any one know what size jet i might need
December 31st, 2008 at 3:08 am
hi i have an yamaha aerox 04 n i put anew variator on it and it didnt make much difference bt im wonderin if the weights are too heavy allso wen i put my new sports exhoust on it didnt wnt t move off my drive n e help please
January 19th, 2009 at 11:37 am
hi there ive got an 03 roxy it did about 65-70 with pollini race belt, doppler sr3 race can and rollers , just put a big bore 50cc kit on it nd now does 50 can any one help me get it back up to speed thanks , thinking it needs another upjet ??
January 20th, 2009 at 11:02 am
wot is this first step you wld take to tune up a yamaha aerox 50cc 2005 model. write in
January 30th, 2009 at 9:01 pm
hey kenn,
iv just put in a yasuni exhaust, raicng air filter, variator weights and some other stuff and im having the same problem as you, i asked a mechanic for some advice and he told me that i was getting that problem because there was not enough fuel flowing through the carb so i sujjest u use a 90 mm jet or somehting.
cya
February 3rd, 2009 at 8:34 pm
hi i have a yamaha neos an am tryin to find out wot is up with it i put a 70cc kit on it an a technigas exhaust new rollers its good off take off it is just doin 45 fat out wot do i do to get it right
February 9th, 2009 at 6:01 pm
Hi,
Im James from the Philippines and I am 140lbs in weight. I have a Honda Dio 1 body and I installed a long stroke last re-bore 90cc Block . stock open pipe and stock Carburetor, but already changed the segunial into big solid segunial and a thick belt plus mallossi rollers. also changed pulley to center spring and clutch springs to racing but everything else is stock and hey man, I run 1350 KPH on flat and thats not it cause I dont down my head yet. I haven’t yet tried the maximum speed of my Dio cause the roads her in phil are not that safe. no joke. I cant actually smash SYM , Honda XRM, Jet and other 50 - 110 CC motorcycles. the main problem that I have is that its not registered so cops used to chase me every time I go to highway. but of course cops cant get me. if you have any question regarding the setup of my scooter or if you want some pictures or if your in the Philippines I’m happy to show this off to you and very happy to have you drive it and see for yourself. email me. blowinghorns@yahoo.com
February 9th, 2009 at 6:08 pm
sorry there’s a mistake on my first post. the speed is 135KPH not 1350KPH. thanks!
February 24th, 2009 at 11:52 pm
Hi
i have a 2006 Jog R (ac) and i want to put giannelli extra exhaust on, i im wondering where the best on the internet i can get one from.
cheers
February 28th, 2009 at 10:54 pm
Aerox tuning with Hebo Patanegra!
Hi I have Patanegra on and want to know what ignition timming I shall use?
I dont have a grade plate and use timming micrometer, current setting is 4.5mm before top dead senter on the timming micrometer.
What is the correct timming to use with Hebo Patanegra and long strocke crank chaft? I use Polini Racing ignition.
Also I would like to know what the normal main jet size would be with Keihin PWK 28mm carb when used to Patanegra?
I be happy if any know this and maybe if someone knows can send me a email about it? robert.myrland@sbnett.no
Thanks!
March 31st, 2009 at 11:50 am
iya ive just bought a 50cc aerox gp1 its bin deristricted and has a sports exaust on it
it does 55mph but i want it going faster what can i do without spending a lot of money please someone help me
thanks
April 11th, 2009 at 5:52 pm
i have just bought a Yamaha 50cc aerox 08 bike
soon i will be derestricting the bike and i would like to tune it up
can some one give me some advice on what i should do and tell me what are the best parts to buy
could you email me on cell_jamez@hotmail.com please,
thnaks
May 1st, 2009 at 11:55 am
oryt i av just went and bought a piaggio typhoon and i am just wondering how to fully derestrict it it does 43mph at the minute i think the expanstion pipe has been cut of it is a 1999 model anyone got any ideas…
chow
May 4th, 2009 at 12:59 pm
hi can you tell me whats the best way to tune my o9 plate jog rr
May 14th, 2009 at 11:32 am
I have a aerox 70cc malosi kit with mixed rollers 3.5/6.5 and a technegas exaust DAVE and it goes 70mph
so all i can say is play with the rollers.
And does anyone know what my bike would do if i put a Race cdi unit in
Thanks eddie 66
May 18th, 2009 at 2:59 pm
hello,
got a 08 areox had it deristricted does 53mph atm, looking to put a GIANNELLI EXTRA EXHAUST on it does anyone no if that will make a diff or not? i havent got the money to spend on a leo vince zx which i no from mates works if anyone can help me would be great, as im buying in on a cheap for £40 i need rollers and cluch springs which ones woould i get for this exhaust that will work im hoping to increase the speed and a good acceleration its good off the mark atm want to keep that or increase it,
just give me a email if you know
ccjkilner@hotmail.co.uk
many thanks
May 20th, 2009 at 8:32 am
i got my yamaha bws ng about a month ago:
since then i have fitted with numerous things here is my list:
revolver exhaust:
new brake dicks
new pads
race belt
6 g rollers
air filter
reed valve
boostbottle
induction kit
re jetted
23mm carb
9 roller clutch http:
ok right did you think i missed something… yeah a bloody 70cc boar kit there not needed yes i no that if i had a 70cc boar kit i would go well over 100mph but im happy with my ‘50cc!!’ moped and if the pigz stop me they cant crush my bike because im only 16 and im happy going 82mph
May 20th, 2009 at 11:08 am
hello
i have just bought an aerox 50 2005 with already a gianelli exhaust and 9 roller pollini variator. It does about 85-90 klm. I want more!!!! where do i start? I don’t really want a 70cc kit though if i can help it.
regards,
Kurt
June 5th, 2009 at 8:12 pm
hi people im reece!
i have an 04 earox with a 2007 engine and a 70cc bore kit, i am currently hitting around 60mph and am not sure wat size jet is in it, im wonderin if any1 wud know wat size to purchase to get some more speed! and also wat are the best weight rollers to put in to get good acceleration and still some top speed?.. cheerz.