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Buying RS 125 first bike any hints

Discussion in 'New Riders and Riding Tips' started by 125rider, Nov 19, 2006.

  1. Hey guys have decided to buy an RS 125 and just wanted to know any tricks for stopping it from breaking down too soon.

    Background: I have virually no riding experience and was trying to decide bewteen three pretty different purchases.
    1) Just any old POS 250 that was cheap and I didn't mind dropping till I could get something bigger. This was clearly the sensible option.
    2) Hyosung GT250R. I just can't get past buying a new bike for $7000 and also liked the idea of 2year warranty.
    3) 2001 Aprilia RS 125 with just over 4000k's for $7000. Read heaps and spoke to people and general consensus was this would be a bad choice.

    Decided stuff practicalities and I'm going to buy the Aprilia tomorrow hopefully and just had some questions.

    Any practical hints for upkeep. I know two strokes are higher maintenance but when should I get my first top end rebuild, any particular synthetic oil that people think is great, warming up time etc. Also any riding tips given that I hear can be a bit tricky. Mainly just really don't want to buy it just to have to have the engine completely rebuilt in 1000k's.

    Cheers any help is awesome as I am a complete novice who's probably about to make a dumb decision.

    P.S also I live in Canberra does anyone know a good place to get it serviced and is it worth paying a mechanic to have a look at the bike before I get it.
  2. 125 -

    Yep, it's a dumb decision, especially if the bulk of your riding is city riding/commuting. Two strokes need to be ridden wide open regularly to stop the combustion chambers, power valves, ports etc. from coking/gumming up with crap, even when you use the best oil.

    And seeing as you're a beginner, it's an even dumber decision! RS125's are an all-or-nothing ride - you're either in the (narrow) powerband and the world is a wonderful place, or you're out of it and life is hell. They are quite a challenge.

    But enough of these considerations, it seems you've made your choice, so here goes....

    Plutoline, Motul or any of the big brand (very expensive) full synthetic oils are a good choice. Settle on one brand, find a regular supply and don't switch around. Hi performance 2 strokes tend not to like switching from one brand of oil to another often.

    It would be a wonderful thing, seeing as you've decided to own a 2 stroke, if you could learn to do some spanner work yourself - it'll save you heaps. A good dealer will be able to recommend top-end rebuild intervals. Either warm up the bike static for a few minutes or at least ease into your ride. Thrashing from cold can "cold sieze" your engine - the piston expands fatsre than the bore size and ker-bang. They'll usually run again once they've cooled down, but your piston and bore will be history.

    All this considered, whilst top end rebuilds might come up as often as every 5,000 k's (depending on how you ride) a "full engine rebuild" shouldn't be needed unless you have a total disaster - unlikely.

    Riding tips? Learn to slip the clutch, and ride at very quiet times of the day until you're confident. Cars will have no patience or understanding of your bike only travelling as fast as a pushbike because you don't yet have the skill to keep it constantly in the powerband.

    I've ridden and raced 2 strokes much of my life and I love them, but they are high maintenance machines. You'd be far better off with a clean second hand (or even a new) Kawasaki GPX250 or similar. If you're gonna go for the RS, just know that it's a commitment in maintenance and riding style.

    They are beautiful bikes. Enjoy, but tread carefully.

  3. The advice you have is spot on, don't go any buy a lawn mower, you with kick yourself within a month, buy something that's practical as you will most likely want to upgrade.

    RS125 would be good at a track day for some fun, but other than that you need too rev the shit out of them 24/7.
  4. Life insurance ???

  5. hints? how about...

  6. Rs125

    Hi Mate

    I bought an Rs125 for my first bike. i bought mine with 4000km on it as well. I have had it since Mid July, and it now had 15000km on it. I use it daily as my commuter as well as a weekend thrash bike, and a track day bike.

    It has done all this without any complaints. People that have been on group rides with me know that i wring the neck of the bike, and it keeps on going. Having said that, you have to keep the maintainance up on it. Parts on these things fail a lot. i have had to replace the chain, sprockets, speedo drive, thermisor, clutch cable, clutch lever, battery...

    Fuel range is about 200km out of about 10 litres. I use Castrol TTS as that is what i ran in my go kart and never had a problem with it. cost is about $70 for 4 litres. Lasts about 1500km or so.

    spark plug is about $15 i think. one of those every about 4000km with a new filter and change the gearbox oil.

    There is a lot of support on forums for them. They are hugely popular over in Europe. everyone has been there and done that with the bikes. if you are having problems, the solution is only a search away.

    There are bikes in Europe that have got to 40 000kms before being rebuilt.

    To put it bluntly, it is an easy bike to ride. my girlfriend went off and got her learners, jumped straight on the bike and rode a large chunk of springvale road in peak hour traffic to visit me at work.

    Just be prepared to spend money and a lot of time maintaining it and chasing up parts for it. If you want something loud and easy, get a CBR. If you want something a bit more fun and a little different, get the RS. I love mine. If you have any questions, just pm me.
  7. Dont let people 'Pi$$ down ya back an tell ya its raining' 125rider.
    Go the RS, Its a shame bigger 2strokes are now outlawed.
    A 2stroke single requires no more expense in the long term than a multi cylinder 4stroke, and if people say otherwise they're either skipping maintenance schedules, or dont know what service costs are in total for 40,000ks as opposed to 1 topend rebuild maybe $800 then 1-2 freshen ups (15,000k's) thereafter.
    It's all in the tuning, so yes find a good 2 stroke specialist. (MX Tuners) and do a top end rebuild soon as U can. By doing this it shows how its been running, what parts wear most, and the performance & service life of those parts can be extended with careful attention to detail.
    Motul, Rockoil, & Castrol make good low smoke reliable products.
    As far as performance goes it will then $hit on a CBR or a WhoSang, as well as a much more rewarding ride. The rest of the $ spend on rider training, get on a track and enjoy!
    The new 250's are a great rideaway price at 7000, but remember in 2yrs they'll be even cheaper new- and already avail secondhand at 3500, your Aprillia will still be something special.
  8. Go for it

    Im looking at an RS250 as my first road bike. I have a bit of experience with 2 strokes and offroad bikes so I know what to expect.

    Preventative maintenance is what it is all about. Treat it well by letting it warm up, use correct oil and general maintenance and it should leave a relatively pain free and healthy life.

    Be careful of ex track bikes though. May seem to have low k's but that can be a sign in itself. Not many commuter 125 2 strokes out there. It can be done though.

    Top end rebuilds every 15-20 thousand k's. Can be as early as 5,000 for a track bike. Early signs of a tired engine in need of a rebuild is rough performance and sluggish

    Have fun and be careful. POWERBAND WOAAAHHHHH :)

  9. Thanks guys hoping to pick it up this week. I know it's a bit crazy but would rather have a bike I love I suppose than one I'm just riding because it seems like the sensible option. The suggestions are appreciated and hopefully it won't blow up too soon.
  10. i'm still waiting for my rs125, but i was having a chat with one of the guys at the aprilia stand at the bike show and he warned me to try and keep it off the highways. the engines aren't designed to hold a constant throttle and will seize. either keep rolling your speed on and off and alternating gears or keep to the backroads. plus what the other guys already said, clean spark plugs, good oil, and warm it up properly
    best of luck though!
    tell us how it goes
  11. 2 strokes can be toned down a bit by making changes to sprockets and the power valve spring. Most mx workshops should be able to help with this.

    If you change to a lighter spring the power band will be reached earlier and last longer but you will not achieve the heady rush of it opening suddenly (which is half the fun :) )
  12. I ride mine on the highway every day to work. It is fine. Just have to sit on about 110 - 120kmh as 100 is right between 5th and 6th gear. 120 brings it right on the start of the powerband so it will sit there all day.

    Bet you cant wait to get the new model loki. That one looks damn mean. Awesome styling and something that looks a whole lot bigger than a 125.
  13. might just be the new ones that don't like highways then
    how long have you had yours, what's the milage up to?
    i really liked the old ones, but i LOVED the new ones. you're right, i can't frikken wait :) but unfortunately i have to because the shipment is a month late
    damn wino soccer-fag italians :D
  14. The milage on my bike is up to 15 000 km now. i have done 11 000km in the 5 months that i have owned it so a hell of a lot of riding for a two stroke.

    I cant see why the new bikes would not like the highway. it is exactly the same engine in the new ones as the one that i have. Would not surprise me if the guy that you were speaking two really had no idea. Just the usual 2 stroke bashing stereotype. There are guys here in oz as well as over in Europe that are commuting on them with no troubles at all.

    Just find some corners and you will see why the people that own rs125s love them, and why most of them keep them when they upgrade. Anything will hose it in a straight line, but in the corners, it can really show up some bigger bikes. Just learn to ride a stroker a little different to the 4s, as there is basically no engine braking so it is a lot of trail braking into and through corners. lots of fun.