Page 1 of 2 12 LastLast
Results 1 to 15 of 17

Thread: SR50 R Throttle problem *help*

  1. #1
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11

    SR50 R Throttle problem *help*

    Hello!

    im new to the whole tuning of the 50cc. I know a decent amount at the moment but not enough lol. I have an Aprilia SR50 R fuel injected model 2013 and it has been derestricted, has the Leo vince rollers in there (not sure of size they came with exhaust) and also has a leovince TT sport exhaust. I have a new CDI in it (de restricted) and also got malossi sponge in the air box ( probably makes no difference)

    anyways, I was on my friends SR50 R 2016 earlier today and his throttle seems a lot more loose than mine. With my throttle I got to give it a good pull (it's more like riding a 4 stroke) but with his bike it's loose and feels nicer to pull back. (Like an actual 2stroke should) I've looked everywhere for solutions and don't know what to do? After going on his bike it feels so much nicer to ride.

    P.s - his bike has an arrow exhaust and rollers -- he had them fitted in a shop and I don't really want to spend money in the shop for them to sort my throttle when I could do it myself.

    please help, cheers

  2. #2
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    Hi again! I'm having a hard time understanding what you mean about the throttle. The actual feel when you twist the throttle? Or the engines response when you twist the grip? If it's kind of hard to twist the throttle, try lubing the cable and make sure it doesn't have any kinks or sharp bends in it. I can tell you that the Arrow extreme exhaust is a much better choice than the TT. Power on the TT is a little lower, comes on sooner, and drops in power faster when the revs get past the peak power. I've been seeing the Leo Vince ZX chrome version back on the market and it doesn't really get better than that for the DiTech. The pipes mentioned all come with 4 gram rollers which are too light for our engines but good for the carbed models. 5-6 grams is just right for the engine we have when it is still 50cc. The TT, coupled with rollers that are too light, will allow the engine to rev right past the point in which it makes the best power. (Which is about 8,200-8,400 RPM's with the Arrow and ZX).

    Also, from what I've learned, there really is no ignition better than the stock one. It's not restricted and puts out an amazing amount of power. Derestricting on a Piaggio Ditech would consist of removing the spacer between the two variator halves, removing the metal plate between the intake manifold and reed valve, and getting the ECU derestricted.
    Last edited by 2Strokesforlife; 01-27-2017 at 07:26 PM.
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  3. #3
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    Hello!

    thanks for the reply

    its a bit of both it feels stiff while twisting and when I release it doesn't pull back quickly... was thinking about getting a quick action throttle but I have to get something to go on bars and I wasn't too sure what they were. What rollers do you recommend best? The TT was just the cheapest option at the time.. slightly regret it now but there we are lol!

  4. #4
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    Between 5 and 6 gram rollers. Trial and error is going to be the best way to see what works with your pipe. If the transmission is set up just right, it'll make all the difference in the world. Do you have the stock throttle on there?
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  5. #5
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    Yes standard throttle on there currently

  6. #6
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    Get yourself one of these if you don't have one already. http://m.ebay.co.uk/itm/Dual-Cable-L...927?nav=SEARCH
    I use silicone spray or wd40 to lube the cable. If you change any of the adjustments on the throttle cable, it will also change adjustment of the oil pump slightly. You can fine tune both serprately as the cable coming off the throttle splits into 2. One to the throttle body, one to the oil pump.
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  7. #7
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    Was thinking about getting the TNT quick action racing throttle from pedpartsUK? Think it was around 15. My throttle is harder to twist compared to my mates SR and I'm not keen on it. What do you think?

  8. #8
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    What rollers should I get please? 16x13?

  9. #9
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    That's a pretty cool looking throttle. The only problem is that the stock throttle is part of the assembly that has your controls on it (start button, kill switch, and mode select). If, you can get it to work with your stock cable, you probably won't be able to fit the controls and the mirror on there as well. I still think you should give it all a good cleaning and lube it up before spending money on a universal part that might not work.

    The rollers are 19x15.5.
    http://www.sip-scootershop.com/en/pr...i+27+_m669420e

    Dr. Pulley sliders work better and last longer but they cost a little more.
    http://www.sip-scootershop.com/en/pr...ley+_sr1915555
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  10. #10
    Looking for my Fujiko-chan. William the Third's Avatar
    Join Date
    Oct 2003
    Location
    Asheville, NC
    Posts
    7,406
    Quote Originally Posted by SR Connor View Post
    Aprilia SR50 R fuel injected model 2013 and it has been derestricted ... I have a new CDI in it (de restricted)
    Ok, so I'm a bit confused. Is it a direct injected "Factory" model, or the "R" carb model? Kind of conflicting information there, just want to be sure.

    Quote Originally Posted by SR Connor View Post
    Was thinking about getting the TNT quick action racing throttle from pedpartsUK? Think it was around 15. My throttle is harder to twist compared to my mates SR and I'm not keen on it. What do you think?
    A quick turn throttle will make the throttle even stiffer/harder to twist.
    #1 Forum Loser

    1973 Harley-Davidson Aermacchi Z-90 - Restoration project
    1983 Kawasaki KZ750 Spectre - Fathers old bike
    1998 Kawasaki KE100 - My first bike at 14
    1998 Laverda Ghost Strike 668 - A fun little bike
    1999 Aprilia RS250 - Track bike
    2001 Aprilia RSV Mille - My first Aprilia
    2007 Aprilia SR50R Factory - My babe magnet
    2009 Aprilia SR50R Factory - My "help me I have a problem"

  11. #11
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    I'll order them now Thank you 2strokeforlife!

    william the third... I believe it's the Factory I'm not 100% though lol. Just an SR50 R fuel injected all I know pmsl!
    my mates bikes is a 16 plate and his throttle is quicker than mine seems to act faster than mine. It's also more lose to twist where as mine is stiff... after riding his my SR is annoying me...

    thanks ks for the replies!!

  12. #12
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    If it has a kickstart it's most likely carbed. Your friends throttle has an easier "pull" because it's basically new. Clean yours and it will be like new again, or get a new cable. Just remember that the oil pump has to be correctly set or it'll give too much oil, or worse yet, not enough.
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  13. #13
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    How do I set the oil pump? Also with the cable can I just clean it with WD40. How do I clean it as it's got rubber all around it? Where do I start lol..!

    thanks again for replying

  14. #14
    apriliaforum Junkie 2Strokesforlife's Avatar
    Join Date
    Aug 2016
    Location
    Jenison, Michigan
    Posts
    316
    You didn't answer if it had a kickstart. If it is a carb model, and I could be wrong, but I think between 4.5 and 5.5 gram rollers would work a little better as that engine can rev higher than the DiTech

    Cable
    https://www.youtube.com/watch?v=aQnMdOL09uY

    Oil Pump
    http://www.apriliaforum.com/forums/s...t-PPJ-oil-pump
    2009 SR 50 Factory
    Malossi 70cc BBK
    Malossi HPC Crankshaft
    Stage6 Waterpump Impeller
    Arrow Extreme Pipe
    Malossi VL 13
    Ecu De-restricted 2.8.0
    7 Gram Dr. Pulley Sliders
    Stage6 Soft Contra Spring
    Water Trap
    RS 24/10
    Stage6 260mm Front Brake
    Stage6 Torque Control MKII 107mm
    Stage6 R/T Clutch Bell 460g
    Malossi Special Belt
    Malossi E5 Air Filter
    Stock Gears Installed

  15. #15
    apriliaforum newb
    Join Date
    Oct 2016
    Location
    UK
    Posts
    11
    Yes it does have kickstart mate

Page 1 of 2 12 LastLast

Similar Threads

  1. SR50 front fork problems help
    By Gbgfactory in forum Scarabeo 50 Ditech, SR 50 Ditech, SR Factory
    Replies: 1
    Last Post: 02-14-2011, 01:58 PM
  2. SXV 2008 Throttle problem..Help please
    By Hisham in forum 2006-2011 Aprilia RXV, SXV, MXV 4.5/5.5 V-Twins
    Replies: 8
    Last Post: 06-12-2010, 08:00 AM
  3. SR50 Ditech 2005 Problem HELP!!!
    By Jackniksmith in forum Scarabeo 50 Ditech, SR 50 Ditech, SR Factory
    Replies: 5
    Last Post: 07-26-2009, 06:24 AM
  4. Need Urgent Help With SR50 DiTech - Crank Problem!
    By Ste-V in forum Scarabeo 50 Ditech, SR 50 Ditech, SR Factory
    Replies: 4
    Last Post: 10-12-2006, 10:32 AM
  5. SR50 Problems - help!
    By SFsr50 in forum Scarabeo 50, SR50, Mojito 50, Rally, Fly 50
    Replies: 4
    Last Post: 02-26-2004, 08:59 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •