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Thread: Bats Aprilia RS50 “twinturba”

  1. #31
    apriliaforum expert twinturba's Avatar
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    Finally did my final checks and TT made it off the table and onto the road! Kept it under 8k for a short ride to the gas station and then my parking spot. Managed to get the temp up to the top of the blue so I'm happy with the first ride.



    First impression is the torque on the new TP85 kit is great. It's easily pulling 14/44 gearing around at low to mid RPM's and the front brake makes 1 finger modulation easy. Suspension feels solid and balanced. The carb will need a little tuning after another break in run to lean out the mixture.
    Jenius Biker Blog

    Current: RS250³,Newd, TT, Max, Nastro, Bangkok, 85 ADV

    Past:Versys, Typhoon, NCXD, RC390², Madass, PW50, KTM BR 65, Aprilia BR50, Aprilia RS125², DRD, WR250X, Derbi SM⁷, Aprilia RS50¹⁰, Derbi GPR³, Aprilia RS250², Mito², NSR50², NS50, HRC RS125, HRC RS80, YSR63 (1st 2stroke!), FZ600, KLR250(1st Bike!)

    I Need Parts!

  2. #32
    apriliaforum expert mattology's Avatar
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    absolutely gorgeous example.

    Get your confidence back with Aprilia.

    caution: the use of motorcycles may be habit forming. side effects include purchasing multiple examples of the same bike, in different states of tune, different years, or different models altogether. some motorcycles may be not running when purchased. some parts are no longer available. there are rare instances where aprilias are bought over the internet and upon arrival, they are not as were originally disclosed. there is a small group of people who cannot handle two stroke engines and motorcycle maintenance. if this is the case, you may not be a candidate for Aprilia RS250's.

    Aprilia. Ask your doctor if the RS250 is right for you.

  3. #33
    apriliaforum expert twinturba's Avatar
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    Quote Originally Posted by mattology View Post
    absolutely gorgeous example.
    Thanks man! It's been a real labor of love.

    TT made the trip down to the 2019 2 Stroke Extravaganza this past weekend and performed great on the Saturday ride and even got awarded 2nd best exotic at the show on Sunday! I really feel all my 6 months of hard work paid off!

    You can read more about the 2 stroke extravaganza by checking out my blog 2 Stroke Extravaganza Post

    During the ride Saturday, not sure how fast that is, but TT was able to keep up with the other two fast bikes at the front no problem.



    Trophy from the Sunday Show


    TT had a filthy layer of road grime from sitting in an open trailer all the way up I-5 during the rain storm that hit us here in California on the way back from the Extravaganza.





    I normally don't give TT the hose down, but this called for extreme cleaning action!



    Clean and mean ready for the next show!

    Jenius Biker Blog

    Current: RS250³,Newd, TT, Max, Nastro, Bangkok, 85 ADV

    Past:Versys, Typhoon, NCXD, RC390², Madass, PW50, KTM BR 65, Aprilia BR50, Aprilia RS125², DRD, WR250X, Derbi SM⁷, Aprilia RS50¹⁰, Derbi GPR³, Aprilia RS250², Mito², NSR50², NS50, HRC RS125, HRC RS80, YSR63 (1st 2stroke!), FZ600, KLR250(1st Bike!)

    I Need Parts!

  4. #34
    apriliaforum Junkie chadzilla1's Avatar
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    looks awesome, and that front brake wow, all the mods looks great.
    1999 RS 50


    Stock engine, stock pipe, giannelli can


    Dellorto PHBG 17mm AS carburetor
    atomizer = 262 AU
    main jet = 86
    idle jet = 52
    starter jet = 60
    float = gr .4
    needle = W7
    slide = 40

  5. #35
    apriliaforum expert twinturba's Avatar
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    TT needs some fork seal love so I took the fork off, ordered the seal, and decided to take off the tank and plastics to clean the rest of the road grime.




    As can be seen in the photo below, removing the tank and bodywork revealed the grime I couldn't reach when I washed it. This is more than a vanity project as it will make finding leaks and issues easier in the future.





    Also added some dielectric grease to all of the electrical connections on the bike to prevent corrosion and help maintain a strong connection. This is an easy and often overlooked part of most bikes that can lead to untraceable electrical gremlins down the road.



    After everything was clean and buttoned up I decided to adjust the chain as well so it will be ready to ride once the fork seal is resolved.



    Changed out the leaky fork seal on TT which is a 2004 Aprilia RS50 sporting a fully custom adapted Aprilia RS125 front end. The forks were just overhauled earlier this year for the 2 stroke extravaganza show and go so I was puzzled how the seal gave up the ghost so fast.

    Picked up the replacement seal from my local Aprilia Dealer, Scuderia West, where Bob always helps me find and order bits for my rare Aprilia machines! Next up was some Motul 15 wt fork oil from SF Moto where everyone knows my name. Then Cycle Gear for the seal driver. Sounds like a lot of travel, but they are all within a mile of each other and keeping local shops open is something I try my best to support.



    After assembling the needed materials and toolsI pulled the fork apart to inspect what was causing the leak. Never seen one this bad in such a short time so I'm thinking our difficulty in seating the seal may have caused some damage the last time resulting in catastrophic failure.





    I didn't want to repeat the same mistake with the new seal so I created a simple rig which enabled me to apply equal pressure to each side of the seal while pushing the fork down with my body weight. This prevented the issue we had last time where one side would seat and the other side would pop out.



    Job done with minimal mess and fuss so time to get everything fitted back together.



    All put back together and ready for the next ride!

    Jenius Biker Blog

    Current: RS250³,Newd, TT, Max, Nastro, Bangkok, 85 ADV

    Past:Versys, Typhoon, NCXD, RC390², Madass, PW50, KTM BR 65, Aprilia BR50, Aprilia RS125², DRD, WR250X, Derbi SM⁷, Aprilia RS50¹⁰, Derbi GPR³, Aprilia RS250², Mito², NSR50², NS50, HRC RS125, HRC RS80, YSR63 (1st 2stroke!), FZ600, KLR250(1st Bike!)

    I Need Parts!

  6. #36
    apriliaforum Junkie freedomgli's Avatar
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    Looking great! I think I'm going to pick up one of those Motion Pro Chain Alignment Tools. I have the CAT laser tool but it can be difficult to read sometimes. I feel like the simple rod alignment method is easier.

  7. #37
    apriliaforum prov-nov f4fntm's Avatar
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    Spectacular! Inverted fork and big brakes on an RS50 are unique in the true sense of the word. And the finish on your fairings is super glossy - how? Those NOS panels, or did you spray them?

    Regarding the exhaust hanger: Have you considered going without? It helps clean up the bike, and gets rid of one big heavy hunk of iron. I've been running one of my bikes that way for awhile, with no ill effects. And mine's the OEM exhaust, surely heavier than yours.
    ---> Lee

  8. #38
    apriliaforum expert twinturba's Avatar
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    Quote Originally Posted by f4fntm View Post
    Spectacular! Inverted fork and big brakes on an RS50 are unique in the true sense of the word. And the finish on your fairings is super glossy - how? Those NOS panels, or did you spray them?

    Regarding the exhaust hanger: Have you considered going without? It helps clean up the bike, and gets rid of one big heavy hunk of iron. I've been running one of my bikes that way for awhile, with no ill effects. And mine's the OEM exhaust, surely heavier than yours.

    Thanks! The rs125 front end was a rewarding upgrade! The panels are OEM Harada which came glossy, Although I do keep mine polished for effect.

    Running without a hanger is possible, but I don’t want to risk my carbon jolly Moto silencer. I have a KRD high rpm pipe with a tiny carbon silencer that can run without support no problem. I’m going to eventually make a nice light hanger for TT
    Jenius Biker Blog

    Current: RS250³,Newd, TT, Max, Nastro, Bangkok, 85 ADV

    Past:Versys, Typhoon, NCXD, RC390², Madass, PW50, KTM BR 65, Aprilia BR50, Aprilia RS125², DRD, WR250X, Derbi SM⁷, Aprilia RS50¹⁰, Derbi GPR³, Aprilia RS250², Mito², NSR50², NS50, HRC RS125, HRC RS80, YSR63 (1st 2stroke!), FZ600, KLR250(1st Bike!)

    I Need Parts!

  9. #39
    apriliaforum prov-nov Dextroyer's Avatar
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    Your passion for your machine really shows. My eyes really like the gold Ergal hardware and chain.
    2017 Aprilia RSV4 RR - Road
    2018 Honda Grom - Race
    2003 Aprilia RS50/RS4/RMV125 - WIP

  10. #40
    apriliaforum expert twinturba's Avatar
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    With all the Aprilia RS250 buying we've been doing lately it has provided us a bunch of extra parts including this MK1 RS250 front end. This front end included a front wheel, but we most likely won't be using that. So why is this front end important you may ask? Well it shares measurements with the similar era RS125 front end that currently resides on my personal RS50 TT. The benefits of this front end over the current RS125 front end installed should be obvious, the adjustability and black color. I've already measured and it will fit in the triple clamps and the axel is also the same measurement so it shouldn't be too difficult to swap over. A few issues will be the front fender mounts being different and the extra caliper mount, but it may be worth the effort long term.

    This will be added to the long list of items still on the upgrade list for TT:
    -RS250 Forks (Have Parts)
    -Speedo, Tach, Temp (RS125, KOSO? Still undecided)
    -Domino Throttle and switch gear (Have Parts)
    -Ti frame bolts (Have Parts)
    -Rear braided line (Have Parts)
    -GP top triple clamp
    -RFID ignition
    -Silencer Mount
    -Headlight
    -Rear mud guard



    Jenius Biker Blog

    Current: RS250³,Newd, TT, Max, Nastro, Bangkok, 85 ADV

    Past:Versys, Typhoon, NCXD, RC390², Madass, PW50, KTM BR 65, Aprilia BR50, Aprilia RS125², DRD, WR250X, Derbi SM⁷, Aprilia RS50¹⁰, Derbi GPR³, Aprilia RS250², Mito², NSR50², NS50, HRC RS125, HRC RS80, YSR63 (1st 2stroke!), FZ600, KLR250(1st Bike!)

    I Need Parts!

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