Minarelli Scooter Over Range Rear Pulley Alternatives Project 1of3

In this video series I was looking for possible cheap alternatives to an over range rear pulley for the Minarelli / Jog / 1E40QMB two-stroke scooter engine. Along the way I tried to include information on other CVT topics that may be useful, in addition to detailing what was done to make each pulley fit my Chinese scooter's 1E40QMB transmission.

Part 1 : This video is part 1.

✅Tip Jar (Did this video help you?)✅

Even if you aren't looking for an over range pulley, check out the listing below to help you find specific sections in the series about other topics.

Part 1 (24min53sec)
0:14 What is an over range CVT?
2:27 Malossi Over Range CVT Kit
6:28 Using Spacers On The Drive Boss
11:47 Morini Rear Pulley
14:59 Elongating Torque Driver Grooves

Part2 (32min02sec)
0min00sec Modified Stock Rear Pulley
4min11sec Modifying A stock Front Pulley Fixed Half
11min13sec Stock CVT
14min45sec Piaggio Rear Pulley
20min16sec CVT Cover Clearance
27min12sec Flat Centered Front Drive Face

Part3 (15min57sec)
0min00sec 139QMB/GY6 50 Rear Pulley
5min54sec Hoca Rear Pulley
10min40sec Conclusion

Thanks for watching and please Like, Favorite, and Subscribe for more!

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used under Creative Commons Attribution 3.0 License
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#ScooterTuning #CVT #ScooterPerformance

[C.D.J.Burton]

Mate your style of presentation is perfect. Not to fast and not too slow. Easy to understand. Very important key information mentioned which is almost always missed out. Love the visuals. Not over selling yourself. Just straight to the shit. I came here unintentionally as well. I'm not even planning a cvt upgrade, in all honesty your title and thumbnail got me!

[corybuiltsean]

I love this 8 year old video and still helping people out. I’m working on my daughters Bombardier DS 90 atv and honestly I didn’t know much about cvt this was well worth the watch

[iliveinthes]

This video might be eight years old but the info contained within it still relevant and will always be relevant thank you very much for that.

[eliecervargas]

Great. this confirms my set up. Stock torque and clutch springs. Longer belt. Larger variator. Shorter boss pin and a combinated roller weights. I switched my gears from stock 13-40 to a longer 15-38. Igor the same acceleration but 20% more top speed

[markjohnston]

Sir I love your no BS style and appreciate the time and effort you display...I know it is very time consuming and I just want to say well done just subbed.

[feidex]

omg the work that this dude put in his vidoes is feneamenal you deserve more subs

[tadasvaznevicius]

Thank god this guy doesn`t charge money for his videos. A lot of good information, very good explonation, becouse of you i reach 54mph with my little Yamaha. God bless you.

[Abydos]

Nice to see there are other guys like me, spending hours and Days of thinking and building low-budget improvements on those scooter parts. In the end i use Dr.Pulley Variator sliders a Malossi Variator and a Naraku Twist control, this makes most "bang for the buck", on the gy6 139qmb the e-starter gear makes a large overrange impossible.^^

[robertpierce]

I’m revisiting some of your older work
I need to study this harder

[YszapHun]

I use a 128mm standard Piaggio rear pulley, with an additional linear pathway. Originally it was a "banana shape", but my friend did the CNC milling and introduced 3 new pathways next to the original ones. To me it is essentially an overrange now :)

[GLBETREKKER]

Amazing work! Will watch all parts of this series!

[josepeixoto]

Great idea, that deal with the grinder was something;

[Racer]

Hello I love you videos. Im in The Philippines And have a new Nmax 155 And being a retierd mech And racer I wanted to work ON The CVT. Almost All videos ON YT are in Tagalog Or other languages I can figure out alot by watching The videos but listening And watching you is very helpfull in understand The other operations of The CVT no matter The bike
Thanks again

[Sheptunofff]

My 5BM setup for example: stock variator with milled roller housings, belt 17x804, rollers 5.4gr., 1mm washer, Suzuki Sepia stock torquedriver. It runs 84 kmh via GPS with rev limiter.

[kingkong]

King of tuning I like your information you are the best I see millions of videos you're the best

[nomiserah]

All i did to gain a much wider variable 'gearing' range on my 139qmb was to fit +1mm wider than stock (17mm instead of 16mm) 3~5g roller weights to my stock variator. I also fitted a 6mm shorter belt than the stock (723mm x 18mm instead of 729mm).
The wider weights allowed the belt to ride the front pulley higher and the shorter belt pulled in tigher on the rear pulley (giving a much wider ratio range). One or the other would work for a light to medium tuned engine, or both for heavily tuned engines to hit 50+mph without overevving. Much cheaper than final drive gearing changes, sports variators etc. Sure it would work for any CVT system.

[zizo]

Man we cant put any comments u already did what no one ever did in youtube about the 50cc minarelli i hope u continue on what u do cs u explained alot of things i need
I have aprilia sr 50 and i cant pass 65km/h i hope you help me to fix that i really got some ideas from ur vidéo i will try them and i hope it be helpful to me great job man !

[johnwood]

Well done. really informative and the Variator/Clutch balancing now makes more sense to me.
Come the spring and I will certainly try playing with over range  bits n bobs.

Thanks again

[NinkyodoCODEX]

This Channel is Gold, thank you for all the great Videos! 💯

[bertlzansinger]

This is proper scientific (field) research! Cheers mate!