
wise_mumu
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Everything posted by wise_mumu
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Hi, my bike is nearing 50k kms already. Was wondering how much a typical top end rebuild cost (block + piston + gasket + bearings)? What brand of pistons is recommended? (wossner, vertex?) And typically, how long does it take to do the entire service? I know Ah Seng very busy always, so I'm guessing turn around time is around 2 weeks? Just trying to ask around here before going to shop just to have an idea on how much damage I will be facing! Thanks.
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Ok, definitely reading up more! But i did get what you were saying. Thanks for the tip!
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Hope he makes a speedy recovery. Prayers sent. Ride safe everyone.
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Very informative post! Thanks! BTW, looking at the dellorto website, I only see 266FN, 264FN, etc, none with DP / DQ. Can this be bought locally? Thanks. Sorry for noob question.
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Anybody know who make number plates (the one you stick on the front screen)? Changing my bubble screen soon (old one is no longer clear, so you can't see anything when you try to tuck in). Thanks!
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Thanks! I'll pay them a visit soon
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Yup, been there many times for F1 & MotoGP (since 2006) . Always using a Plane or a coach though. Skipped last year because been busy (though I should have gone since it was VR46's last Yamaha ride in Sepang, also his last win to date). This year, I'm using this to convince myself in going: 1. Last 2 stroke race 2. Last 800 race 3. Moto2 Reasons for not going: 1. Ducati's gonna suck Still, very much inclined in riding there. But i guess it's too much of a hassle.
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any one going for motogp on oct? would it be pure torture for the rs to ride it there? maybe i should just ride the bus or plane. contemplating on going or not. last chance to see 125 2-strokes in full gp glory.
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. . . I managed to DIY my carb-cleaning last weekend, finally managed to overcome my fear of the CARB Anyway, it was more straight forward than I imagined. Didn't find any hassles, unlike when I first attempted to clean the powervalve (stuck because of gunk). Adjusted the airscrew (-2 1/4 turns CCW - I think no need to adjust idle jet for now), and the needle clip 1 notch down (it was originally all the way on top), to try to get rid of that 1/4-1/2 throttle bogging... but still not completely eliminated. I will try to play with this adjustments 'til I find the best compromise. Bike's running a 155 main jet, rarely go full throttle so no need to be investing in this yet unless I go to track soon (not in the near future, still missing some gears) Biggest pain was re-installing the carb. That throttle spring makes it very difficult to put the cables back in. I think I should use a clip / zip tie next time to hold the springs down (read this tip form interweb). BTW, how long does delivery take if you order from PJME? It's been 2 weeks now and the stuff I ordered haven't arrived yet ... to many folks selling their RS's... where were you when I was shopping for one? (kidding)
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Before trying to look online (pjme), can you guys point me to shops where I can purchase the following locally: 1. Spark plugs 2. Jets for 34mm Dellorto (just in case need to change some jets) Gonna attempt to clean my carbs, and adjust the jetting this weekend. Bike's sluggish at 1/8 to 1/4 throtle (around 6k rpm). Hopefully I can solve my problem by DIY. Trying to follow this guides I found on the web: http://www.rgv250.co.uk/forums/index.php?/topic/24668-spankeys-jetting-guide/ http://www.nsr-world.com/tuning/250-tuning/carburation%20index/jetting/ http://www.gassrx.com/index-12.html Thanks in advance!
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Ok, lots of insights. Learning a lot just by your sharing, so thanks to all. Hopefully I won't experience any expensive 'tuition fees' As for rejetting, ok bit apprehensive since I have zero experience. How do you mix & match jets with exaust & filter? Is there a tool used to measure fuel flow rate to ensure you're getting the right air + fuel ratio? Or is it trial and error (i.e. fit new jet, run bike, take note of rpm if there's any bogging, check spark plug colors, rinse/repeat?). How many jets are there (pilot, main, any more?) Should I be taking note on how many turns it takes to do/undo the jet? I guess I'll have to attempt it sometime and be glad that i'm only dealing with a single piston engine with no need to worry about synchronizing multiple carbs...
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Thanks. Kinda not keen on re-jetting (i don't even know the current jets fitted, assuming 160 for the main jets based on some info from the web). Afraid to touch the carbs at the moment, need more time to research The bike came with a Gianelli muffler. I think the stomach is still stock. Not sure if there's a cat-converter inside (model 2004). At some point, i would like to repack that muffler. When I get hold of rivetting tool, and electric drill Also, how do you decarbonize the stomach of the exaust? (I'll try to google but better to know first hand from those who did it i guess).
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Would I need to reject my carbs with this filter? Do I have to remove the stock airbox? Thanks.
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Cool. Ok, pricewise. Can you point me to a specific shop/person who sells one? Thanks!
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LOL. But i can no longer be considered a 'kid'
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Thanks for the insights. Sheesh, now I have to look out for a better filter! The K&N is more of a paper type filter if I'm not wrong. Anyone selling? Hopefully not so expensive... OK, next valve washing, I will use petrol. I plan to wash every 2 weeks. I noticed improved performance after washing, and also notice the 'click' sound when the solenoid is activated. BTW, when the tank is lifted and the bike is on its side stand (haven't got a paddock stand yet, hopefully by this weekend), I'm worried it might snap bolt holding the tank as the tank tends to lean towards the left. Removing the tank every now and then is a pain especially if it's fulltank. Actually, it's the putting it back together that's a pain. Is there any special technique in cleaning the radiators? Lot's of things stuck in between (bugs, small stones). I haven't got a pressure washer and I'm afraid those car wash shops are not too careful in operating them and might soak them electics. On a more extreme case I might just remove the rad (change all coolants) and soak in some sort of solvent (is petrol ok?). There also doesn't seem to be a fan attached to the rads, so I must avoid getting stuck in a jam lest risk overheating. I guess RS's aren't really commuter bikes, just track bikes with some lights fitted
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BTW, the bike is sluggish at around 6k rpm. But before or after that rpm, it's smooth. Is this a jetting issue? or the stock CDI retarding ignition for emissions purposes? Haven't checked if any mod was done to the CDI (i.e. cutting the bridge, btw, is this legal to do here in Singapore?) Thanks.
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Ok, I'll ensure to keep checking the filter at least once a week. Thanks for the tip.
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Ok, that's quite a relief. But I'll be running mine with the foam air filter just to be on the safe side. Anyway, an interesting design by Aprilia is that originally, I thought the ram air duct from the Right hand side of the fairing is connected to the air box, but it isn't. I guess it's just there to supply some cold air, but there are a lot of other areas that air can pass through (between tank and frame) (see, i'm a total noob ).
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Hi All. Newbie rs 125 rider here. Just got a 2nd hand 2004 bike about 3 weeks ago. I'm currently the 3rd owner. I did some basic DIY maintenance. My first time doing it. I was anxious to do it knowing that a 2T is a relatively simple machine (less moving parts) than a 4T. To my surprise, there's no airfilter inside the airbox. I was using the bike regularly for commute. Do you think there's any damage done to the pistons/carbs/block? Anyway, I fitted an oiled foam filter which I bought from LAB. I noticed there are some cracks in the manifold, so I ordered online for a replacement. Bike's running a 34 mm dellorto (not the racing one). I wanted to wash the carb but was too intimidated to attempt it! I did clean the powervalve. Sprayed lots of wd40 in it as it was stuck. after about 30 minutes of spraying, I was able to take it out. I soaked it in wd40 to get rid of the gunk. When it was relatively clean (most of the gunk were out) i oiled it up (motul 710) and fitted it back in. I had no gasket sealant on hand, but gasket was in good shape so I think it's ok. I adjusted the cable a bit, checked to see the solenoid working (rev to just around 2.5k). I took out the spark plug, noticed it was running denso iridium, but have no idea what model. Color was black (so i think it's running a bit rich). Cleaned with some wd40 and washcloth an placed it back in. I have no idea on what my jettings are (too afraid to remove the carbs ). No idea of the compression ratio as the compression tester tool is yet to arrive. Anyways, like I said, i ordered some stuff online which would be fitted in the comming weeks. A new manifold, a double bubble screen and a Boyesen reed valves are on the pipeline. Hoping to be able to join some DIY sessions in the near future as I really want to learn through hands on. I plan to keep my bike for sometime and hopefully be able to do all the necesarry maintenance myself. It's my first time doing anything significant "mechanicly". I ordered some tools, looking to invest in some quality stuff. Thanks for taking time to read.
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Hi, Wondering if you guys know where to buy good quality tools. Basic things like spark plug wrench, allen keys, ratchet, spanners, screw drivers, pliers... And more specialized for bike items like oil filter remover and bike stands. Any help will be much appreciated. Don't mind if tools are brand new or 2nd hand as long as quality is good. Thanks again.