Changing / Installing Clutch Springs on Scooters - Aprilia SR50R (Piaggio Hiper2 motor)
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- Опубліковано 15 жов 2024
- Step by step how-to guide on changing / installing performance clutch springs on an Aprilia SR50R.
The SR50R as most Aprilia 50cc scooters uses the Piaggio Hiper2 motor. All Piaggio/Vespa 50cc 2T scooters are exactly the same for installation.
This guide can be used for most scooters, as almost every make of scooter used the same type of clutch design. Please ensure you install the correct springs according to the make and model of your scooter.
To view our full range of performance clutch springs, see the below link.
www.scooterstr...
VERY helpful video.. I was a bit scared to loosen the nut that holds the big spring on.. Thanks for posting these helpful how to videos HUGE THANKS 💪😎🤘
Thanks for watching and you're welcome! 👌
One of the best Italian's bike ❤️🏆🥇🔝
Agree
Appreciate the videos guys this one alone helped me know what I'm doing to replace my springs
Great stuff! tThis is why we make these videos, to help others🙌
I have a really slow acceleration in the beginning then when I hit 10km/t it accelerates faster. What should I use for my clutch and variator?
Without knowing any details of your scooter or the set up it is almost impossible to make any suggestions. I guess you could start by checking the components in the transmission and carby/airbox and look for wear and tear. Try to lighten the rollers and up the tension of the clutch spring set.
sounds like you need high rpm to start moving, try buying less weight rollers, or you can buy heavier, so you could go faster.
I run this setup:
-Multivar 2000
-white contra spring
-red leovince clutch springs
-leovince tt
-7 gram stage6 roller weights
-Athena gold series drivebelt,
(Malossi kevlar belt should also work fine)
This setup is for aprilia SR 50R Factory (Ditech) 2006 with stock cylinder.
If you weight +60 kilograms please try out this setup, worked very well for me.
Thanks for sharing your setup👍👍👍 awesome!
Hi, have you got some contact that I could write with you on pv somewhere? I've got the same Aprilia sr 50 factory (ditech) 2006 and Im trying to reach best top speed with stock cylinder to avoid changing it. Right now mine goes 80 km/h on 4,5 gram rollers but Im going to change all of the parts. Im very intrested of you final effect at the acceleration, top speed, sound and the rpms.
@@ciorny2426 final result with stock cylinder was 92 kmh on speedo
what is the top speed
@@ciorny2426 Thanks for your comments👍 On this model I would use a street race exhaust system and a variator, the Ditech has a high revving engine and these 2 parts will enhance the acceleration and top speed.
What size is the clutch nut socket please?
34mm
Also I have adjustable screws to loosen the tension on the springs which I later found out I didn't even need the pliers, they just slipped right out after I released the tension.
Yes the adjustable clutch spring system.
Does swaping my scooters clutch spring effects the engine? Please lemme know.. From India.. Having a Yamaha Rayz
If you fit a set of higher tension springs, this will allow the engine to increase the rpm before the clutch engages.
hi what contra spring , clutch springs , jet and rollers should i use on my aprilia sr 50 2012 full stock only have stage 6 pro replica mk1 exhaust on ,i want better acceleration
It is all trial and testing, make one change per time. For rollers start at .5 gram lighter on each roll. Get an adjustable clutch, Polini.
@@scooterstreetau shoul i try with like yellow springs white spring and 4.5g rollers or 3/3 with 6.5
@@izanagi9959 Just change rollers first and then change to an adjustable clutch.
Hello, very good video 👍, i would like to ask , i have an aprilia sr50r and have Malossi with red clutch springs and torque spring , wondering if i could put a blue torque spring which is +106% , is that to much or do i have to change clutch springs too? Its a 70cc Malossi cylinder with a 21mm carb and a stage 6 exhaust with 5.1g rollers Malossi variator. Thanks
The clutch springs make a difference to the engagement of the clutch as the RPM builds, don't go too hard tension. The rollers will need to be adjusted to suit if you run with the Blue Torque spring. Trial and testing is the key to finding the best solution for your engine performance.
@@scooterstreetau thank you for helping the community🙏🏻
@@a.samatasss4731 There is a lot of amazing people out there sharing their information and for that we are grateful🙏all the best..
I have a BV 500. Will this foot method not perhaps be dangerous doing the stand on it removal method, as my spring is much more powerful?
For the larger capacity scooters use the clutch holding tool. This will hold the assembly and allow safe removal of the clutch and spring.
What do you reckon I should do. Because my bike. Takes loads of RPMS to even move and it’s dangerous for traffic light cars can rear end me ??
Without the details. Check for wear or damage.. all I can suggest is to increase the roller weights and reduce the spring tension on the clutch shoe. 🤷
I have a stock 50cc engine, and i want more power from my transmission. What do you think is a good transmission setup?
A performance Variator will help achieve this, dialling in the correct roller weights, step up the clutch spring set or adjustable clutch shoe (2nd option is better). Get a very flexible belt and make sure it sits high on the rear pulley at idle and high on the front pulley and high speed.
Hello ! Are the purple contra spring and the yellow clutch springs the stock / original for piaggio nrg 2008 ?
No.
What is the size of the socket that you used on the impact gun?
It depends on the model, the Piaggio Hiper2 engine is 34mm.
So when reinstalling the variator or the clutch, it isn't necessary to use a torque wrench to make sure you're not over or under?
Yes using the Torque wrench is the Gold medal approach👍
@@scooterstreetau nope pretty standard. This is setting the bar dangerously low.
@@Austin-dr5fo Using the Torque wrench is the Gold medal approach👍 it is OK if you do it how you want to, best way to learn.
@@scooterstreetau it is the best way to crush your splines. I've seen it happen. I've done it myself.
@@Austin-dr5fo If you don't set your shaft spacing you will crush the spline.The Spacing must be outside the where the spline finishes and the conical washer facing inward, from factory it is set. It does not matter which method used to tighten the bolt, if the spacing is short then you are asking for trouble.
I have a piaggio zip 2t wondering if anyone knows the a good weight for the rollers and what clutch springs to use for wheelies as I'm building it as a stunt bike
Start with 5-6 gram rollers and the tighter clutch springs. You will need to adjust the rollers to suit.
for a good start you shloud use 4-5 grams and yellow springs
How do you get the belt on when using bigger/stronger springs? I can pull the pulley using 1000 spring but 1500+....there's no way. That's the only reason I'm using 1000 spring. I can't get the belt on after changing it.
Place the belt into the pulley and use the leverage from pulling the belt to open the clutch. Or, you can also slide the pulley onto a stationary shaft (for example a long bolt locked in a vice) and pull the belt and finger squeeze simultaneously. Pinch the belt together to keep the tension as it it placed around the crankshaft when refitting. Wella👌
I have just bought a Leo Vinci exhaust and it came with clutch springs and rollers, do you think I should put these on at the same time? The clutch springs are yellow. I have a Peugeot speedfight 4 2t
?
Yes you must fit these and the main jet is a MUST. Always trial and testing..
@@scooterstreetau okay thanks and I have already got a bigger main jet in as I have an exposed airfilter and I had a sports pipe prior to this but it snapped so I think my jet should be fine
@@charliestowe3421 Don't be happy with I think so, check as you go😁
I have a Icebear 50cc gy6 I have a naraku clutch kit It has 2000 rpm springs 20mm carb 30idle jet 80main jet Naraku high tention coil mikuni fuel pump ncy no rev cdi I don't know what contra spring to go with, 2000 rpm or 1500 I weight 150, pounds waiting to get my fmf exhaust welded on I'm new to these could you help me?
The idea of the contra spring: When you release the throttle the revs will decrease. When the revs decrease we want the transmission gearing to also decrease and continually move to low gear so when the throttle is banged on again the engine is at the lower gear to have an instant response to the throttle action. A balance between rollers and spring tension is how this is acheived. The Contra spring can also slow the accelerating progress if too highe tension, trial and testing will get you the best result.
Where did you find that tool!?! I want one but can’t find them anywhere
Did you check our website?
www.scooterstreet.com.au/?s=tool&post_type=product
Hey, i have a peugeot speedfight 3 50 AC. i have fitted the airsal t6 asso, tecnigas next r, 21mm dell orto carb and a metrakit powerfilter- im about to order a malossi multivar, malossi fly clutch with bell and malossi x special belt. at the moment the clutch and belt is slipping so i think i will start off by using the malossi white contra spring provided with the variator and see if i need to get the stiffer yellow one. but at best my moped is going about 83kmh and i think its using a lot of fuel, like 0,6 0,7 liters per 10 kilometers cirka. anyways would it be worth the upgrade to get a new exhaust like the yasuni R or maybe c16 or perhaps the tecnigas tripos which is a mid race pipe? im currently runnning 4.6g weights and besides a bad takeoff. if im at a stand still and give it full throttle it just slips and sudenly kick into 8k and goes really slow then 2-3 secionds later it just jumps up to 10k and gettting up to speed it is about 9.5k, im thinking to get all the new parts on and tune it from there but do you think the springs that come with the malossi fly cølutch is enough? im driving this scoot ecvery day so im going to get tired off having a very aggressive clutch engagement
The exhaust should be giving a good acceleration, but with that set up you should expect more top speed. Look into what you have already changed as to why the speed is moderate and the the lack of acceleration from the start. Rollers sound a fraction too light for me. The Yasuni R would make you very happy or any of the exhausts from the list you mentioned, Great idea! You will always find when you put the power filter the jet will need to be increased or tuned to suit the filter. My approach would be Setting the carby first to the air box and then fit the power filter and adjust. Many suggest to only make one change at a time and we strongly agree. Take this approach with the transmission.... try to avoid fitting all the parts in one session, like doing a puzzle in the dark... My approach would be to go back at least with the carby/power filter before adding more to the puzzle. I look forward to hearing the outcome and you will learn so much as you go, Please share✌
@@scooterstreetau thanks for the answer, i definitely update you, actually i bought a red powerfilter for the original airfilter box but the scoot couldnt breath and it was too tight to pull up the rpms so i had to get the powerfilter
@@exapioz3075 Ok great, look forward to hear.
@@scooterstreetau now i have changed the parts i mentioned and changed to 6g rollers in it is really good, the acceleration i really good, the scoot with the 6g us running at 8.9k cirka and i dont know yet of that is optimal but on multiple flat spots i managed to get up to 97kmh (stock speedometer) think the wind blew in my bavk but still its pretty quick. I had a drag race with a am6 moped with a turbokit pipe and i got q bit in the front f him then he moved fordt qn then i won because mine could go faster but yeah, any thoughts?
@@scooterstreetau no it was the tecnigas e nox pipe he had
Im wondering with how much pressure do you tighten the big nut for the clutch spring, is it possible to overtighten it?
It would be absolutely possible to over-tighten with such a thin nut, that said, I’m guessing roughly one ugga dugga
Yes, it is possible to overtighten. The Piaggio manual states between 55 - 60 Nm. I have seen one come undone before during riding, so if you don't have an impact driver its best to check with a torque wrench.
@@scooterstreetau thanks mate!
i have aprilia 2021 50cc 2t rollers malossi and gianneli auspuh I want to change the big spring and the springs that are in the clutch what do u reccomend me to put ?
Purple or white for the big spring And for the clutch springs ???
@@besartpajaziti7446 Blue fr torque spring and yellow for the clutch spring set.
Hello, I have Aprilia SR with minarelli horizontal engine, it struggles to move from a stop and wont increase rpm until about 20 km/h. What do I need to change?
To help increase the RPM, lighter rollers and tighter clutch springs. The carby must also be tuned to the optimal setting with the jetting.
I’ve had my aprilia for a while I put a 70cc kit on it and a few weeks later my bike started making this grinding noise coming from the transmission and I later found out that it was because my purple malossi contra spring was hitting my malossi delta clutch, what would be the cause of this? My set up is
Yasuni R exhaust
Malossi multivar 2000 w/ 6.5G rollers
70cc kit
Malossi delta clutch w/ yellow clutch springs
Purple contra spring
Malossi special X belt
Not sure that this spring would cause a grinding noise as it is not rotating..... look for something that has a rotational action that is worn in the transmission. The Shaft spacer that sits into the bearing of the clutch cover perhaps?
🎂
Can someone help me?
what if I have weights on that makes my scooter faster and now I want to change clutch springs?
If I change clutch springs and have my weights on noyhing will get broken right?
Take 1 spring off at a time and replace,all should be well,why are you replacing the springs?
When you say, weights, do yo mean the roller weights?
Is the malossi purple contra spring better then the white one? what is the difference between the two?
Not better, just stiffer. With tuning items like contra springs, it isn't a matter of one part being better than another - Its about whether that part is more suitable for your setup than another part👌
I have a honda forza 300 2014 model. What color spring do I need to order for the clutch?
It depend on the Brand you want to use. Which brand do you want?
I will never let near my scooter for a minute, a hammer LOL
We want all of our tuned scooters to Hammer🔨🔨🔨 If you know how to use the tools there will not be an issue. Thanks for watching👍
thinking of upgrading my variator do i need more power from my engine to power it or will it be fine. got a 50cc moped
Depends on which machine it will be fitted too. Let's say the SR50R. The Variator will be fine, they definitely have greater effect when the cc is upgraded. A lighter roller set will allow easier revs but may change gearing too slow if too light, a heavier set will change the belt position sooner. Fid the best weight to give a slower progression of the belt without over reving.
@@scooterstreetau Can I put malossi purple central spring on stock variator. I have leovince tt, bigger jet .....
@@skullbosnia2584 Yes you can, this spring is used the MHR variator and usually requires very light rollers and high RPM. Worth the try to find out if it is right for you..
Wich roller weights is best for aprilia sr 50 r (piaggio)?
6.5 gramms
@@scooterstreetau what do you think about the gianelli go exhaust, in my country it is illegal to have sport exhausts but the gianelli go looks very low key
6.5
It depends completely on the setup you have in your scooter. Different exhausts and cylinders require different weight rollers.
@@scooterstreetau hi, i have malossi replica 70cc. What main jet would you recomend? I still got the 17,5 carb.
Hi there, my scooter automatically accelerates on its own when i start it. It creeps forward slowly and ideling speed doesnt effect it. Mechanic says its clutch springs. Is this true? I dont trust anyone in my area. Been burnt lots.
Yes I would check the clutch shoes, when they fail they get Locked on to the clutch bell and cause a rotation of the rear wheel.
@@scooterstreetauthank you. I will check that too. Flywheel does seem to rotate the get stiff and loose again. Thanks for sharing and your video. 😊
Thank you, all the beast.@@jmdstudio6176
Ive got the clutch bell off now when i squeeze it together it wont come off I’ve tried head hammers bars and it wont even move!?
You need to undo the nut.
What size socket did you use
34
What type of clutch do you recommend for replacing an original clutch for an Aprilia srmt 50cc
Polini G3 is great.
@@scooterstreetau would that be okay with a leovince exhaust Tt?
@@burg4225 Yes for sure.. There are better exhausts available but the Leo is a good starting point.
@@scooterstreetau what are the benefits of a high performance clutch ?
@@lupurednic8624 Different performance manufacturers make differing designs but always Upgrade from the original design. The performance clutch may have a larger surface area on the contact pad giving maximum allowable grip. Some have a heavier throw out arm and adjustable weights within the arm to fine tune the contact pressure. We like the quick adjusting spring tension in the Polini clutch which saves loads of time when tuning the timing of engagement of the clutch on the Bell.
Please help. Which color (malossi) for honda dylan 125cc on the clutch? I have multivar 2000 variator 20x17x10.5g
@@scooterstreetau i will try white mallosi (30-35%) with yellow or red spring cluches? Is it ok??
@@scooterstreetau i was in motobike store and they told me for dylan fit malossi 2912536 (whiite,yelow,red) ?? Hm...
Clutch spring set for original clutch is Malossi 2912536. The order from highest tension to lowest is RED-YELLOW-WHITE so try the YELLOW and if you need more tension delay try the RED.
wemalossistore.blob.core.windows.net/files/montaggio/pdm/7311401.pdf
So put the belt on the variator first I've put a new variator and clutch and I removed 3 rollers because it had no take off so now take off is good but it feels like no top end just reving high please help
Changing too many parts usually bandaids the original issue, so this is not the best way approach. Taking out 3 rollers is not ideal and the engine will not perform well.
I can make a comment unless I know the history of the scooter and te parts fitted, we have an online support program.
See here: www.scooterstreet.com.au/product/online-scooter-support/
@@scooterstreetau thanks I put the other three rollers back in I'm waiting on the left light box and the new throttle cable there coming this week I bought a extra belt in case the new one I put in breaks so it's ruining great now hopefully it'll continue and I definitely will check your support page out
Always good to hear when it works out, trail and testing is the best way to learn about the transmission🙌@@Deoge4
@@scooterstreetau I haven't destroid it since I put the other three rollers in I took them out cuz they was just slow and only going thirty but I think my belt was in the clutch to far down so I got it to the top just a little bit more hopefully it'll all work out in the morning I will know
@@scooterstreetau I meant to say I haven't test rode it I will in the am though
I put a 1500 contra in my clutch and my bike only goes 20kmh and sounds like it’s revving out. Like it’s full throttle how should I fix this
The rollers should be changed to suit the Spring. Is the belt progressing to the top of the variator? Are the rollers too light? Find a suitable set of rollers for the tension of the spring.
@@scooterstreetau u mean something like 8g
@@sigadoonie1613 Without knowing what condition and modifications the Scooter currently has I can't make any solid recommendations. What I can tell you is that the factory rollers are 7.5Gram. The spring that you mentioned @1500, are you referring to the Spring that sits on the torque driver. (Contast Spring) or the small clutch springs?
@@scooterstreetau I’m talking about the the big one that goes on the torque driver
@@sigadoonie1613 Yes ok, I am not aware of a 1500? Usually measured in K which is the measurement for the stiffness of the spring. What brand spring do you have? Please excuse me for the questions..
Thank you!
You're welcome!
Thanks!
Welcome🙌. Thanks for watching.
what tool saiz the nut hex bro?
38
I used a pair of needle nose pliers and a screw driver and I didn't have to screw it down to the bench.
Nice work👍
is this can do good performans dor 50cc
Yes, but really only if you're also installing a performance exhaust.
@@scooterstreetau i have gianeli rekord and rollers 4.7 malosi
@@MrZavraki Yes you should change the springs..
What size socket do you need to remove the nut
15mm, see 40 seconds.
@@scooterstreetau hi no I meant the big one behind it that holds the big clutch spring on
@@motorbikeryda883 34mm
Where can I get that tool in the U.S.?
Did you Google Dremel USA.
@@scooterstreetau All that comes up are rotary tools. Am I missing something? Do you have a direct link at least?
@@itsroads206 Dremel.com
@@itsroads206 Dremel.com
thank you ^^
👍🎅
Hi my peugeot speedfight 3 can’t hold 9k rpm after accelerating from 0 it drops down to 7 and it rarely raises up to 8 and falls back to 7
MY SETUP
Qtre sport exhaust
Polini variator
4,5 g rollers
17,5 carb
As i said my acceleration is great but at 45 kmh it drops to 7k rpm and i rarely go over 65 kmh theres a sound that it wants to go faster, our suspicions are that our exhaust might have a limiter cuz a mechanic put it on and we didn’t check, CDI being restricted cause the mechanic also didn’t tell us anything and then my friend thinks its the clutch springs being too hard since they are stock
Did you jet the bike up when you installed the exhaust? Also 4.5g rollers sounds very, very light for a 50cc with a performance exhaust and variator. I would definitely recommend pen marking the variator to see that the belt is getting all the way to the outside. You may be correct to think the scooter will have restrictors. Check the exhaust, check the CDI-Rev on Main stand for a quick check and also the rollers may need to be heavier, try 6.5 gram and then trial and test.
@@scooterstreetau I tried heavier rollers it was even worse, my mechanic told me to get even lighter ones idk, and when i put my scooter on a mainstand it revs up to 11k rpm, and idk a mechanic installed my exhaust so he should of regulated the carb for it ( my mechanic also said that i need a contra spring and clutch springs, since mine is too hard, BUT our contra spring seems to press down with ease so im pretty confused)
@@scooterstreetau how do we mark the variator im sorry cuz i dont rlly know much about scooters just got this one in summer and we just had it fixed and start riding like a month ago
@@imdovis787 We have a series of videos relating to the variator, watch these ones. ua-cam.com/channels/ySQaQYtx9PVONqjwXKOZcg.htmlplaylists the pen mark tip is used on the variator face..
@@imdovis787 Ok trial slightly lighter rollers and test again. You need to firstly find out if the exhaust is restricted. When you fit the exhaust it is a must to do the Jet, Rollers and clutch spring set to allow the maximum advantage. If you don't do these things you may as well not fit the exhaust..
I have a honda elite scooter and lately when I'm riding and slow down to a light the scooter stays on high rev and then goes down, what can that be?
Clutch pressure spring
You may have an air leak of the intake system. The air mix screw maybe out too far.
What do I do if my clutch is stuck on 😂
What do you mean stuck on?
Its beter malossi clutch than stock for top speed
Really no difference, the largest contact pad will give the benefit.
Yep if you hit paint with a steel hammer it will obviously chip,
There is a amazing invention called a rubber hammer 😬👍
Yep 😂😂, the pretty coloured paint is for the tension guide and the original factory springs were not painted😭
lol a spring hook would have been nice
😆 did you watch the video, see the spring hook? 3:30 Do you need one?
lol yes
Do you need one?@@23bdubballa
im good got one the other day but thanks@@scooterstreetau
Thanx for waste my time
Your welcome👌 thank for the SUB.
just replace it with a Malossi
What to do if i dont have the variator tool
Find a way to lock the shaft when you release the nut. Power tool or air tool if available.