Contra spring tuning. It is running without any problems.

Contra spring tuning. Which contra spring should I use? First off, let's look at the duties a contra spring (a. Tried yellow clutch springs. Sep 13, 2016 · So I have a blue 1k, a stock (1. Aug 31, 2017 15:03:53 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by milly on Aug 31, 2017 15:03:53 GMT -5 Well got my qmb 139 scoot through mot and on the road today the transmission pulls away fast and seems to drop off accelerating really quickly like its hit a higher Apr 27, 2013 · ive got a similar setup, still tuning. Oct 22, 2013 · 49ccScoot. This improves throttle response. The contra spring helps push the rear pulley back together when torque is applied to the rear pulley. Next I put in the Dr Pulley HiT 161301 just like I got it from Oct 9, 2019 · The yellow contra spring is way too much. 9K views 11 years ago This is how I measure my springs when cvt tuningmore Sep 27, 2011 · Red LeoVince Clutch springs Either the White or Purple contra spring from Malossi. Isn't the Malossi green spring a little too stiff? Contra guitar tuning In a Niibori Guitar Orchestra, the contrabass is tuned an octave lower than the prime guitar. The contra spring is vital to a proper cvt tune. (The speedo actually went a little higher, but mine is about 1-2 mph pff once I get above 35). Thanks for sharing :) Reply In this video, we test the performance of different CVT contra torque springs using a method you can try at home — with nothing more than a bathroom scale. This is pretty close to stock, but will hold up better to heat and stop and go traffic. Tell them you were referred by the Silverwing600 forum and that you would like a set of 30gm Round Roller weights (RR2820-8 30gm) for your Jul 28, 2012 · also the contra spring tension changes what rollers are needed. I Aug 13, 2012 · A post in the Performance moped forum by Monti S Your source for high performance scooter tuning parts and accessories. At a standstill, my clutch engages at 4500RPM. 04-12-2009, 11:01 AM reecebuy what does a contra spring do? the question is in the title and whats the difference in stiffness thanks allot Reece 04-12-2009, 02:47 PM High Gain Tuning The contra spring pushes the rear variator pulleys together. where 1500 is a big jump from 1000 where a 1200 is ideal. TK Advanced Racing Systems Air Filter allows your Vespa to breathe better. Malossi performance air filter. All a contra spring does is to push your bike back into low gear when RPMs drop (pushing the rear cheeks back together), so you can re-accelerate well from slowing down. This keeps our cammed out modded engine in the powerband better, reduces belt slip and lets the transmission downshift better on the hills. They stock the "1000 rpm", 1500, and 2000 rpm springs. HONDA elite, aero, Feb 17, 2021 · Similarly with the spring; The lighter, or weaker that it is, the lower the RPM/weight it will give at, the heavier, or stronger spring, the higher the forces (RPM x Weight) to overcome it. You can keep your stock clutch, they are actually pretty good. 5 in and ran about 8250 at first. Jul 5, 2022 · What gram rollers were you using to hit 9850rpm? Or what combination of things like springs, roller weights & contra spring? Read more + 12 October 2021 By bradmt in Scooter Tuning Malossi Contra Spring Size Chart Read more + 04 March 2022 By Ad min in Latest posts, Scooter Tuning Piaggio Typhoon Tune Build Details. MALOSSI is the best that the scooter tuning market currently has to offer in the area of engine tuning. com had an NCY drivetrain upgrade kit for the PCX which allowed them to determine that the contra spring has the same dimensions as all of the standard GY6 125cc springs. Choose from; Yellow or Red Yellow is perfect for sport to midrace 72cc-80cc builds. In this video I try a few things to get some more speed out of the TGB R50X scooter but it looks like I'll have to settle for the I agree drt-tuning! That is why I suggest running a red spring and changing roller weights to compensate! I also find that running a heavier spring lets me maintain speeds up hills much better also! I tested a Malossi contra spring against a Stage6 spring to see which one delivers better performance in the CVT. torque spring, main spring) has. a. Malossi make a number of different contra springs, in different stiffness’s (measure in ‘K’ rating) and different physical sizes to suit different make and model scooters. This clutch will probably last forever on a Ruckus! To help tune the transmission, we used a Malossi red high tension contra spring from a Yamaha Zuma to slow upshifting. Anytime you change the cc, exhaust or other engine mods, you need to address your contra spring. It is running without any problems. Let's say you have a bike with stock 7g rollers. I suggest: get the Polini for Ruckus variator and use the stock drive face boss with it. Feb 27, 2023 · I figured I'd just start a thread here in builds. Aug 14, 2012 · -64 Polini, re-built bottom end, cases matched, inlets 13mm, stock crank, 13 sha carb, 68 jet, polini filter drilled out, proma circuit, modified stock variator, 4. Finally got tach installed to go further with tuning. Changing your contra spring, and then trying different roller weights is how this is achieved. Better exhaust ? If you want faster Sep 17, 2003 · OK, another issue I see asked a lot is about different roller weights, different variators, and different contra springs. The contra [torque-driver] spring puts a counter-tension on drive belt and when in time it loses stiffness can cause bogging on take-off and hills. If you are looking for improved durability and performance, this kit is perfect. his kit includes the following: Malossi Kevlar Belt. Every time I install the yellow contra spring I can not, for the life of me, get the clutch open to drop the Keywords: scooter belt performance test, clutch spring adjustments, moped tuning results, 2 stroke scooter modifications, stage 6 adjustable clutch, scooter life insights, malossi scooter upgrades, scooter mods review, yamaha scooter performance, moped clutch issues milly Scoot Master! Posts: 6,966 Location: Wales Contra spring and weights confusion. 5mm wide, 64mm long, 3. If you want smoother acceleration, use a Malossi 2000 Variator. Variator rollers are 3 5g and 3 7g and just put on 1500rpm yellow contra spring and 1500rpm clutch springs. Changing the contra spring can affect variator behavior, potentially requiring rebalancing both the roller/sliders weight and clutch springs to properly match the new powerband of the exhaust. so you will need to retune roller weights with a change in contra tension. Which contra spring should I use?Scoot F. . 25k?) and a yellow 1. Watch the results and decide for yourself!🔧 Feb 2, 2006 · If your roller weights are giving you good acceleration, and a good top end, but when you approach a small hill the scooter slows drastically, this may be caused by having too light of a contra spring. Jun 21, 2020 · If I'm off the throttle and going back on the throttle on a rolling hill, my takeoff doesn't seem as strong as if I am taking of from a standstill. The truth of the matter is, A new variator, spring, and weights WILL NOT increase your vehicles over all power Jul 18, 2011 · Malossi Contra Spring Discussion in ' Scooter Tuning ' started by RelentlessDan, Jul 18, 2011. Pressure is the simplest of the two ideas. Ditechs are not hard to tune. All donations are appreciated and help to keep this forum and it's projects going. It is really stiff! I'm glad This is why you should use a tachometer to tune. 5g rollers and see what happens. the one which came with the malossi kit - you only really need a heavy spring for fine tuning or where the bike is so powerful the belt is starting to slip (massive screech) otherwise the higher pressure on the belt causes power loss through friction. Many performance exhausts come with lighter roller weights and sometimes stronger clutch springs. Nov 2, 2011 · The guys at Scooterworks. It was about 2mm to shave off the spring to let the pulley travel all the way Btw, might sound silly but if you need to make a short sleeve to keep a larger spring centered internally on a driven pulley, the outer race Nov 8, 2018 · looking for some measurements of contra springs—playing around with C2 clutch tuningshrug emoji 45. I don’t have scales and don’t know what gram weights were in it. Red is for race setups only! TGB R50X Scooter Tuning The Variator Contra Spring And Road Test. The stock spring is fine (unless super worn). My issue is Jan 6, 2015 · You compress the spring full in a vice and measure it's coilbound length. Touring Spring. The yellow is a 30% stiffer spring, and is best for higher rpm Malossi Contra Spring The Malossi Contra Spring replaces your tired contra spring. So I'd get a lighter contra spring to compensate. That should make it take off fast and let the engine rev to 40mph+. These should be replaced at every belt service. Continued riding city blocks settled below 7500 Aug 10, 2012 · Id like to hear other peoples opinions on contra springs. But the stock variator is just fine. If you were driving a standard transmission ClutchesYour transmission tuning is a big deal. Very happy. Apr 24, 2016 · Changing GY6 Scooter Clutch Springs Pit/Pocket Bikes & Scooters Jun 16, 2012 · "Project 49" is a 49cc two-stroke scooter performance project, based If your roller weights are giving you good acceleration, and a good top end, but when you approach a small hill the scooter slows drastically, this may be caused by having too light of a contra spring. In order for you to understand which way you need to go with weights and springs, you must first understand how the entire drive train works. com Scooter Forums 4 Stroke Scooters And Mopeds Contra Springs / Torque Springs "upgrade" not really helping I've tried different slider weights, different contra springs, jets, variators, and many other "performance" mods for my GET 50cc Ruckus. It determines when those plates will open which will drop the belt lower on the rear creating a taller gearing. HONDA elite, aero, A clear comparison between heavier roller versus stiffer contra clutch spring with numbers on a graph. I have Dr Pulley 3. I have greater acceleration now (5500+rpm full throttle) but it seems like the gear ratios change too suddenly or at least are too sensitive to throttle input. I use sorta heavy 7 gram ones with the stiff red contra spring, my theory is that stiff spring and heavy weights moves the belt better than light weights and light spring. Long story short: Im a large dude and Im doing everything Im capable of doing to this scooter to get it to 50mph+. Put blue Polini contra spring in. 2gram sliders in now. Jul 29, 2021 · The contra, or torque, spring in the clutch provides resistance against the clutch pulley, so the variator weights have to provide enough force to overcome the resistance of the contra spring. My set up Yellow molassi contra 4. If it accelerates good but loses a few mph off the top end, then the contra spring is too stiff for the lighter rollers. I'm thinking of going with the polini blue or white? (whatever the softer performance spring is) and jumping up in weights a little bit. Sep 16, 2010 · I have always known clutch and contra spring ratings as RPM. ScooterSwapShop is the #1 shop for parts for your Honda ADV 150 & the new 160! We are always researching parts and testing and tuning parts! Please call us for questions about fitment between the two models, if it doesn't say that it fits the 150, or the 160, then it likely won't fit! Jun 22, 2021 · Properly tuning around a lighter tension contra has so many benefits compared to the heavy contra. contra spring exploded? Discussion in ' Scooter Tuning ' started by jayvinci, Apr 19, 2014. Apr 7, 2014 · Is the RPM rating on these contra springs indicating how much higher (than stock) the rpms will go before upshifting/how much higher the rpms will downshift at? I ordered that Koso 1500, st Complete Starter Tuning kit for your Vespa Belt Service. usually 1000 (stock) 1500, and 2000. sad thing is there isnt many choices of contra springs available. I would start by throwing in some 5. Q. its kinda been 2 steps forward 1 step back for me. Main jet is currently at 195, however it did the same thing with 180, 182. Now, the contra spring is the large spring that compresses your clutch drive plates together. The contra is therefore 5 notes lower than the bass. 1. If you are running a soft, or weak center spring, your transmission is changing too fast. Mar 1, 2015 · Make a donation to this forum! You choose the amount. The yellow is an awesome spring for most sport setups. com Scooter Forums General Scooter Chat How to choose correct Roller weight, Clutch&torque Spring Malossi Contra Spring The Malossi Contra Spring replaces your tired contra spring. I’ll keep yinz posted. g. Proma Exhaust MLM intake VM 20 carb HPI mini rotor ignition TJT variator w/ 1. Less lateral force on crank, less weights required in variator (lighter rotating assy), and less wear on belt. May 6, 2015 · The contra spring also helps climb hills. Variator Slides. I've seen it all too often. It provides improved acceleration and is a good way to upgrade during your regularly scheduled service. Thats in the gearing. Jun 18, 2020 · I have a 08 Zuma all stock except Yasini R and 5gm sliders. Oct 9, 2017 · Take 2, LX50 tuning advice ⬆️ About 3 years elapsed ⬇️ Post Reply Torque spring from Stage6 R/T (Racing Team), specially developed for the R/T tuning CVT. 5mm shim Yellow rear contra spring (ground nubs) Stuffy crank Pull start Green clutch springs SYMPTOMS: Starts really easy Idles fine After a rev it wants to die when rpms are falling. Here's a yellow Malossi contra spring for your Honda PCX150,PCX125,ADV150, Navi 110! These are stiffer than your stock spring, which makes your CVT shift at a higher RPM. This causes the back wheel to be in a "higher gear". High Performance 1500 RPM compression contra spring for the Honda Ruckus, Honda Dio, Genuine Buddy and Roughhouse 50, as well as many chinese QMB139 Scooters. Since it is a crucial part of the tune, for the purpose of this article, We will consider the counter-spring a tuneable part of the variator. The lighter sliders will delay upshifting and help keep the engine in its powerband better. Aug 9, 2007 · fitting a stronger contra spring increases the rear pulleys tension on the belt capri dave,Aug 8, 2007 #2 The contra spring pushes the rear variator pulleys together. There's a hint of lag while the Contra Spring: This spring is to resist the expansion of the secondary clutch, which is a result of the primary clutch contracting. Anyways. 25mm gauge, 5 coils long (not sure if relevant) Any ideas on alternatives? looks like vespa variator spring looks similar. Shifting at the right rpm is essential for getting the best acceleration and speed out of your 2 stroke or 4 stroke scooter! What does changing roller weight do? How does the contra spring stiffn Sep 22, 2010 · CVT Principles - Variator Clutch Belt Rollers Contra Spring ⬆️ About 1 year elapsed ⬇️ Post Reply Last year I bought a 2015 with almost 1400 miles on it. The installation of a stiffer contra spring will often also require an adjustment to the rollers. Tune up your Vespa for a little more zip off the line and across the powerband. Stock rollers are usually a pretty good balance. Even a stock engine can use a stronger contra spring. Since an expansion chamber has less back pressure, the clutch springs improve take-off response by Oct 12, 2021 · Like all things to do with transmission tuning, this is a fine balance. Jul 18, 2022 · Rollers, clutch springs and contra spring have little to do with getting higher top speeds. You can keep your stock clutch bell. The stiffer the contra spring the harder it is to pull the belt down into the pulley halves and once there, the quicker it will kick the belt up on decell. When played, an E comes out an octave lower - the same as the 2nd Here is how my "spring tuning" all went down: First I tried the Malossi red contra spring and lost top speed so the white one went in and top speed came back and acceleration was unaffected so I went with the white. The guitar is notated as if it were tuned conventionally, so that the instruction to play the open first string is written as an instruction to play (high) E. Helps eliminate clutch shudder and helps the clutch engage better under load. We assembled everything with Dr. Oct 22, 2018 · Red contra is generally unnecessary. The clutch seems to engage at a better rpm for the pipe but it seems to slip. 5g roller weights Notched stock variator Gates Ax-36 belt I'm SERIOUSLY very impressed with the new contra spring. 5k contra spring in my collection. The contra spring keeps tension on the belt and pressure to prevent belt slip. Apr 6, 2013 · Subscribed 10 2. They have gotten rid of my bog when starting from a stop, and let me accelerate at a reasonable rate when starting on a hill. Hi all! I installed the 80cc BBK with cone air filter and bigger main jet on my GY6 engine. With a stock belt installed, the best performance thus far (and what will become the benchmark in my tuning to the 1500 spring) has been with the Jasil 15% spring and 8 gram rollers. Pulley 4. I put 5. This could be the difference of pulling wheelstands off the line, or your bike being a total dog until 15mph. Q. 5g weights, ax-36 belt, yellow malossi contra spring. (BA430UU) Read more + 14 January 2022 By bradmt in Scooter Tuning Which 70cc Cyl kit fits the Euro 4 Typhoon / SRMT ? Jul 4, 2022 · So I’m currently in the process of tuning my moped I’ve got it all broken after my engine rebuild and what not but I don’t know much about any mechanical stuff so I’ve had to YouTube and look at forms. As previously explained, torque from the front pulley raises the gear ratio and compresses the contra spring when accelerating. This filter enables a higher flow of clean air than the original, with identical filtration properties. k. I read plenty from folks wh The contra spring is not exerting enough force to push the belt back up to the top of the pulley. you dont want too much tension on the belt Explaining the functions of a scooter torque spring and under what conditions you would consider changing to a stiffer one. The spring presses against one half of the rear pulley, pushing it toward the other half of the Jan 17, 2023 · Registration date : 2009-06-12 Subject: Re: Malossi (white) Contra spring 17Kgs Tue Jan 17, 2023 4:33 pm JohnyC wrote: Ps, Anyone seen an advert for 30grm rollers ? ? Send an email to Dr Pulley directly. ClutchesYour transmission tuning is a big deal. 2nd to piping, its definitely the most noticeable mod I've done to my ciao. (This is why a stiffer contra takes more rpm to force the clutch open). 5 Oct 10, 2013 · I'm about to install this carb in a few hours and I figure I'll make this thread dedicated to tuning that carb. Member Posts: 315 Death needs Time for what it kills to grow in -wsb Malossi Contra Spring The Malossi Contra Spring replaces your tired contra spring. Hello everyone! I recently purchased a 2005 Yamaha Zuma and have a few concerns! Current fitted parts list is 70CC Polini Big Bore Kit, Minarelli yellow stiff contra spring, Deltoro carb Nov 1, 2005 · Malossi red clutch springsPost Reply Variator, roller weights and contra spring mechanics for dummies! Learn how it works [Archive] - ApriliaForum sponsored by AF1 Racing, inc. 5 gram sliders in the variator, lighter than the 6 gram slider we had been using. I have to greatly disagree. When using the Stage6 R/T CVT you don’t need very hard contra springs. PDA Also do I need to change my rollers also if I install a stiffer contra spring? I read on the internet that I most likely would need to change my rollers to counteract the stiffer spring. After a driver eases on the throttle and the engine’s input decreases, this spring pushes the secondary clutch back together to revert the CVT system back towards its initial orientation. Thought great. It revs out SO much Malossi variator kits for your Honda Navi ! PROVEN mph and acceleration gain, also comes with contra spring Malossi Variator for Honda Navi 110. 2. My tranny seems to work awsome, clutch stalls high, gets right in the powerband and holds it in the fat part of the powerband all the way up. The roller/slider weights will affect when the spring compresses and how far it compresses. I tried the 1500 for $18 shipped and installed it with the stock weights which will take about 20 minutes next time. I saw a member of another forum posting that they were actually measured in Feb 18, 2008 · [MP3250] Contra Clutch Spring or Lighter Dr Pulley Sliders? Post Reply Forum -> General Discussion Nov 25, 2012 · Messages: 101 "hard Contra spring" just noticed that- I would put a weaker spring on for now, e. I drew these pictures real quick, and they are not to scale, but they should work and give you a good idea. Its combination of Kevlar and Aramid construction reduces power sapping slippage between the clutch and variator and improves acceleration. The front variator roller weights and engine speed have a lot to do with this. The single most effective "all around" mod so far for me has been the "blue" CVT clutch springs. I've heard mention of contra-spring pre-load and I assume that means the degree to which the spring is pushing together the rear pulley halves at rest. A. So I am going to attempt to put it out in simple terms. 2008 SR50: 70cc Malossi, Malossi crank, Micah porting, big TB, V-Force reeds, Technigas RSII pipe, H-G regulator, Stage 6 Intake maniold, Pro porting air filter, Malossi gears, 7gram Dr pulley rollers, red contra spring, torsion controller, Malossi belt, HiT clutch, Stage 6 front brake, Galfer rear rotor, PM Tuning carbon fender, Paoli shock, water trap, WPC on all moving parts, Kiesler under Apr 13, 2017 · I have a 139qmb with 80cc BBK and performance exhaust and 21cvk carburetor. May 24, 2025 · Now so far I've installed 18g sliders for the variator and ALSO a yellow malossi contra spring, which is stiffer than stock. Good throttle response throughout and about 45mph sustained top speed. I was wondering if I can gain any more power from it with replacing the clutch springs and contra/torque spring? How will it affect my scooter? Clutch springs adjust the Rpms of the take off. Stock transmission works perfect, maybe slightly lighter rollers ? a 25mm carb is good if std reed block, porting the cases/180 barrel can give good results. I suspect the “hot ticket” is going to be 3-5g rollers (18-30g total), red Malossi springs, and the stock contra spring. Jul 22, 2020 · There is no right or wrong way to tune it, you tune it to you personally as in weight? 10 st or 18st ? What do you want from it ? To get more cc you fit a longer stroke crank (55mm) machine head etc. The red will put an enormous amount of strain on your output shaft and motor. Hello guys, I was wondering if you could help me determine the best contra spring for my full malossi overrange kit/mk2 racing clutch, mk2 racing cylinder, yasuni c30, running a dialed in MV We would like to show you a description here but the site won’t allow us. Includes the two screws you need to put it on a Honda Navi and make it work. Can anyone tell me I have 5 to 6 g rollers and 6 to 7 g rollers I also have a contra Malossi White Clutch Contra Spring for Vespa 150-300 and most 150-300cc Piaggio powered scooters. Dec 8, 2009 · This nicely complements our contra spring tuning. Runs 7k consistent. I have the red contra spring off treats and it made a huge difference, where are you jetted and what kind of temps are seeing?? I like my DP sliders. The stiffer the contra spring the harder it is to pull the belt down into the pulley halves and once there, the quicker it will kick the belt up on Aug 12, 2012 · I'll be replacing my contra spring once my new kit comes in. Replacing your stock Contra Spring with this one will ensure longer life and smoother takeoffs. Consistent acceleration. How you can tune the variator roller weights, and ugrade the clutch springs; All of this to provide better performance Malossi Contra Spring The MALOSSI Contra Spring replaces the existing contra spring. Aug 5, 2016 · 49ccScoot. I plan to up the Main jet by 10% as a start so going from 80 to 89. In my experience, my yellow contra bound up before full variation, don't know if the red is the same. Which one are you running, along with the size of your roller weights, variator, and belt. However, if your rollers are too light and the contra too stiff, the variator wont fully open to achieve the highest ratio. Sep 19, 2019 · Set up: DR 70 kit / puch Aluminum head (super sport. Aug 12, 2012 · Well when the 30yr old spring is wore out and beat to hell. 1000RPM, 1500RPM, and 2000RPM being the most common examples. Today I go in depth on how you can tune your gy6 150cc cvt or/and variator. Served the purpose. Belt is fine but I found A logical approach would be to keep the rest of the variator components stock, including the contra spring. Author Topic: New variator, contra spring, and fly springs installed (Read 21395 times) wassonii Sr. Before and After Mar 21, 2011 · I'm looking to get back to roller-tuning today and have a question before I start. zmipw v9tjirtn qgath bfy3 u8 h4 ml yqabzg mxux rs