Aprilia RS50 Goes BANG - Gearbox or Clutch

[Fnatic]

Went out for a blast with my mate today on my RS 50 and he was on his Speedfight 2 Iron-X.

Went from Enfield in North London up towards Harlow on the A10.

Quite a good blast up that way and got an indicated speed of 68mph.

Not sure how accurate that actually is but I think a 60 true speed is realistic

Anyway had to slow down for my mate on his Speedfight all the time so we decided to hit some country roads so onto the A414 from Harlow it was

Bike was running well and really enjoying all the twisties

Coming up to a roundabout on the outskirts of Chemslford.

The roundabout with Greenbury way and Margaretting Road just outside Writtle.

Just as I approach the round about I kick down to 2nd and all of a sudden screeching.

So I'm like WTF I pull over and check all the essentials. Petrol, Chain, 2 Stroke and everything I could check and fired it back up and it starts screeching again So I'm like really confused by this point and begin to think I've blown my top end but then I clutch in and it revs without screeching. So I assume that the engine is fine and my gearbox has blown.

So called up the house and got my Mum to call me a recovery truck for £80.

But they took about 1.5 hours and this guy pulled over and had a look for me. He reckons the clutch bearing but I had never heard of this so I was confused. But he helped me stand it up right as it was sinking into the grass and stood around talking for a good hour and I offered him a drink for his help but he insisted not to take it. Top geezer So my mate rings his Dad about it and he says because I can pull away in first with the noise but not get into 2nd it must be the gearbox.

So whilst I was waiting I thought I'd take a video and some photo's for all of your interest's

https://i298.photobucket.com/albums/mm255/DeclanJ/13042006280.jpg

https://i298.photobucket.com/albums/mm255/DeclanJ/13042006281.jpg

https://i298.photobucket.com/albums/mm255/DeclanJ/13042006282.jpg

https://i298.photobucket.com/albums/mm255/DeclanJ/13042006284.jpg

75 Mile trip in 2 days 28 today

So I got home eventually when the recovery truck turned up at 6.30pm and I broke down as 4.21

Got home and drained my gearbox oil but hardly any come out

https://i298.photobucket.com/albums/mm255/DeclanJ/13042006285.jpg

I think this could be the problem?

I'm going to fully drain it and then refill it. If the problem stays I'll check the clutch plates and hopefully that will sort it as I can't be forking out for a new box

Video Coming Soon

[Blau Zedong]

Sounds like you've fuxxored a bearing or two in the gearbox through lack of oil. Choices -

a) split the cases and change dead bearings.

b) Fill box with EP90 and flog bike ASAP.

Obviously I can't condone b).

Valuable lesson to be learned - check your oil cause gearbox seizures can kill.
____________________
18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[Fnatic]

I expected the oil to come pissing out but about 75ml came out.

[ms51ves3]

[tutton]

Would say use a older box, just had a look about and the older ones use AM6 engines.
so unless you can find another person whos written the bike off and you can engine translplant or want to take it apart and get it done...

Bluex5, the flog the bike, wouldnt they notice on a testride when the oil starts to heat up as im guessing gearbox oil heats and goes thin then the box makes noise again?
____________________
Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[Fnatic]

Hmm I am in to minds whether I caused it. It was an early kick down but it wasn't as if it went round to 12k and bounced off the limiter.

I kicked down and it went back around to 10k and then sounded shit.

[Luke_Retrofly]

You sound surprised.

[Fnatic]

After doing 74.2 miles on my new bike I am

[ncrn]

When you changed out the gear did you get a cracking sound at all?

The easy easy option is to get another bottom end (or new engine) and do a straight swap, however splitting the cases and having a look to see if its gear box/clutch isn't complex; It just takes time and tools.
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

[St0rmer66]

Is that 75 miles from new?
____________________
:: Honda XR 125 L ('53) => Kawasaki GPZ 500S ('02) => Suzuki SV650S ('00) => Aprilia RSV-R ('51) ::

[Blau Zedong]

[Fnatic]

Erm no crackling sound just a loud scraping.

74.2 miles since I bought the bike and had it on the road.

I doubt I'm going to be replacing the engine tbh

[ncrn]

Not sure its gear related as I got a huge crack when I broke my second gear.

If you got a gasket you could take the cover off of the clutch side and take a look at it? They need a special tool to take off usually though.
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

[Fnatic]

Great another tool I have to buy

[Fnatic]

https://uk.youtube.com/watch?v=fxnuirUPRTk

Video

[Devans]

Bugger that sucks, get it fixed mate, don't flog it to an unsuspecting buyer, that's harsh!

[Devans]

Bugger that sucks, get it fixed mate, don't flog it to an unsuspecting buyer, that's harsh!

[L3G3ND_MTX]

I had that happen to me, my bike got knocked over (this is an rs 125 but there pretty much the same) and the balancing gears snapped and i had this horrible noise, also my bike got VERY low on gear-box oil when it was brand new and my clutch plates went because of it (oil went before the first service!) just an idea for you, could be your balancing gears because mine sounded like yours did aswell

[MaybeGuy]

ask yourself:

where did the oil go?
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Dom_]

Where did you buy the bike from?

[Fnatic]

I bought from eBay.

Got the guy to end the listing early.

[L3G3ND_MTX]

[ms51ves3]

[Fnatic]

Think I have found the cause.

Whilst draining gearbox oil, the drain point on the bottom is leaking out gearbox oil.

Obviously the last owner hasn't done it back up properly.

I'm hoping it will just refill and work again.

[iooi]