Yamaha / Minarelli Transmission Fix!
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- čas přidán 27. 08. 2024
- www.scooterstreet.com.au
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how to fix the common transmission bogging on Yamaha / Minarelli engines.
for a replacement Clutch Assembly / Torque Driver for your Yamaha or Minarelli engine see the link below!
www.scooterstr...
The most misunderstood talked about part of the clutch. Thank you for making this video. That’s what’s going on with my scoot and it’s also jerking on tank off. I’m sure it’s related to these pens. I will be looking into them tomorrow. Thank you very much.
That is great Dave, thank you. I hope you can solve the issue👍
The torque drive. The often forgotten part of the CVT system. 👍
Exactly but its half the performance set up right..
@@landmonkey22 that's right. And some people just think fitting a super hard torque spring will work. With no consideration for the effect it will have on other parts performance.
I couldn’t see one for a BWS100 on your webpage. Can I special order a setup with a sports clutch as a package ?
There are 2 types: 105 and 107 mm torque drivers. Mines a 2001 Aprilia Area 51. Which size should I get?
105 and 107 represent the bell ID, the Area 51 is 107mm.
Thanks for that.
Very welcome..
Good video 👍
Thanks for watching🙌
The fix ?, ok.... get another one but what it is the difference, with the old one ? , model ? , why the new one won't act like the old one after a while ?
The fix isn't explain properly i think.
You can replace it with the Malossi outer pulley (the pulley with the slots) which will help. Unfortunately this is just a common problem with the Minarelli engine, so it may happen again over time. This is just the nature of the engine.
Hi, I have a 50cc 2 stroke scooter, and the belt doesnt go all the way up, could the "groove" be the problem, as its not allowing the rear pulley to open all the way?
At first I would say NO. When the belt travels forward as the gearing changes the belt will stop progressing for several reason but mainly I can list 2:
1/ the belt is sitting at the lowest point in the rear pulley and cannot physically move as it has met its limit of travel. Is the belt too wide, too short and incorrect belt?
2/ There is a mechanical restriction not allowing the progression of the belt, with this I refer to the rollers being to light, the engine RPM too low, the rear pulley (as you mention) not closing - this usually causes slippage of the belt.
Some things there to check and isolate why.
Hello Sir i recently changed my stock clucth for a mallosi red springs, on a 50cc stock build, before she was ok, now she revs very high but no power she literaly takes a lot to start get some speed while reving high and i have a stock variator. 5g rollers, maybe you could help me?
Springs are too high tension for 50cc. Rollers too light.
how big was the socket you used to open the clutch?
Yamaha is 39mm, Malossi Torque nut is 38mm.
@@scooterstreetau Thanks for responding. So if i were to open a Yamaha Aerox clutch id need a 39mm, correct?
The fix was to just buy a new one?? That is not a fix. that is just a solution. I have a Aprilia Leonardo 125cc from 1998. And it has this problem and I have looked at it. Would you know any brand that have interchangeable parts for mine? I know many scooters have a engine number like 139qmb etc but i dont know the number for my engine so its difficult finding the exact part on AliExpress since the Leonardo is not such a common sold bike but it sure has many common parts. I just dont have the number or a different scooter to compare it to wich are kore common like a different brand. Thank you. Im in Norway so im not gonna come by your shop. Im just asking for help. Thank you
However you want to see it mate! If a part is worn or broken, get it fixed, replace the part or the peice and problem sorted. Search for 139QMB parts there are many coming out of China and Euro suppliers.
@@scooterstreetau but 139qmb is a 50cc and that is the number on my Chinese scooter. But I was hoping you could give me engine code or anything information about the Aprilia Leonardo 125cc 1998 scooter. That is what I am working on now and the grooves in the rear CVT is worn so I should replace it. But it's not many results searching Aprilia Leonardo and I was hoping you had some magical book where you could see what interchangeable parts for different brands I could search and buy for my Aprilia. And I was not negative on your video but I thought you als had a nice fix I could do here at home and without buying a new part. ;) So again, do you please have some info about my Aprilia? Everything helps, even if you have measurements I could go search for also. Please
@@RimjobHimself You need a parts diagram for the engine. Check this out.
www.apriliagenuineparts.co.uk/navigation-aprilia-parts-leonardo-14.php
@@scooterstreetau my comment got removed by CZcams again. I said thank you for the link. :) It showed the diagram but unfortunately not dimensions. My luck always finding the rarest least sold bikes and then needed to find parts. Story of my life
I was looking on your shop for torque drive unit for my bws100, but couldn’t only see one for the 50? Did you have one for the 100?
Here it is: www.scooterstreet.com.au/product/malossi-torque-driver-kit-33mm-for-yamaha-50-100cc-2t-models/ Te Malossi 61 8312 fits both versions and many more.
So am I right in thinking that if my secondary pulley has straight diagonal slots it's more performance orientated?
Just serviced my xmax and the rear pulley was straight diagonals no wear after 22,000 miles but didn't have the curved slots that So many say are stock.
All TD's start off as straight diagonal cuts on the Torque driver shaft, as the driver wears the slot becomes wider and this straight cut start to change in shape having a belly shape on the force side. Both the pins and the shaft cuts will wear. The larger engines have larger components with greater surface area which gives a lower wear rate.
@@scooterstreetau gottcha 👌 I have the minarelli s/c 125cc, has same transmission as the 250cc so would explain the lack of wear, although it still struggles to change ratio on hills, wonder if my contra spring is cooked,
any recommendations on spring colour or just go to a malossi yellow contra? I will watch a couple more times so it sinks in hahaha 😆
@@liamkenny100 Usually for this issue it can as simple as reducing the roller weight by 10%. The factory rollers in the Xmax 125cc are 20x12mm 10 gram so try the 9 gram (2021> are 20x12 8G). Trial different rollers and see how you go, there will be a best result and it will up to you to find what suits you and your scooter best!😄
@@scooterstreetau 9 gram is exactly where I'm at now, the bike feels better loaded up with weight, and pulls well occasionally 😅 with just myself on, I will be trying a few other things, thanks for the replies 👍 😀
@@liamkenny100 Great, you are onto it!🤠
Does your store have on for the Honda elite 80
Sorry, no we do not have many of these models in Australia.. We had the Lead 80cc.
What size is the clutch nut is it a 35mm socket
It is a 34mm......
Ok thank you
Can it be the failure on piaggio?
Yes, it can happen to Piaggio, any metal parts will eventually wear. It seems to be more noticeable on Minarelli engine.
I forgot to mention that i have a aftermarket performance pipe, as well tecnigas.
With exhaust, replace the main jet, rollers to 10% less only! Clutch spring set 2500-3000 rpm. Adjust rollers as required.
So i should keep the red springs, from new clucth and just adjust jet and roller correct?
@@Prasowkasportowaa The clutch springs can be replaced but I would not go too high in the tension. I mentioned above.
Thank you very mutch for your help sir 🙏🏻
@@Prasowkasportowaa you are welcome👍👍
What is the size of the nut on the clutch?
I cannot be sure without measuring, so I would only be guessing from memory ID. 32mm.
Thanks for your answer. Anyway, I was wondering if using a sandpaper and some polishing cream on the slots where the pins go just to get the surface flat would work instead of buying a new clutch. And can be the springs on the clutch be loosen so that is why it accelerates in low gear instead of high gear?
@@walterboczula8774 Best to just replace the Torque Driver, Malossi sell this part alone. The issue is the shape of the slots has changed and no longer allows a slow detailed progression of the pins to run. Hey give it a go and let us know how it went..