aprilia rs 125 engine rotax 122

[lmcarr1979]

hi all just been ripped of with a an aprilia rs 125 and it needs a new gearbox or engine either would help do any of you no where i can get one but it needs to be good and cheap as i have spent out over 1400.00 on the bike so far and have only riden it 20 miles plz help me im in diastrates many thanks oh plz consider im in devon thanks

[hmmmnz]

not cheap, but very low miles
https://cgi.ebay.co.uk/2005-Aprilia-RS-125-Rotax-122-Engine-5000-GENUINE-MILES-/110580707052?pt=UK_Motorcycle_Parts&hash=item19bf1faeec

probably worth spending the money, since you have already spent 1400
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Wiring Diagrams BIDNIP it bitches

[DrDonnyBrago]

What's wrong with the current engine/gearbox?

[N cee thirty]

jesus you could have bought a nearly new one for that much,you've been had
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Im-a-Ridah]

So its seized?

Also, you might want to avoid just getting an ultra cheap engine, or you might end up with even more problems.

[lmcarr1979]

siezed solid

[chris-red]

[Im-a-Ridah]

[SillyMe]

Yeah check the two stroke feeds have not been crimped with plyiers as I have seen before. Keeps mechanics in work.
There will be two, one to the reed block and another to bearings.

Sorry to hear this. I have had two Aprilia RS 125's and rebuilt the top end of one of them. (Nightmare of a job)
Both bikes jumped out of 5th gear on me.

The latest Aprilias are made and designed to fail big time up and after 6 to 7 thousand miles. I noticed there are intentional perforations on the floats of the float chamber which fill over time. Well at least it seems that way looking at the nu-unified mould of the floats.
This Knocks out the running and effects clutch control, which in turn affects gear change and ruins the already fragile cogs.

I have heard of people rebuilding the gear boxes on these with more robust cogs so check this out if your gunna go for a full rebuild.

https://shop.ebay.co.uk/?_from=R40&_trksid=m570&_nkw=aprilia+rs+125+engine&_sacat=See-All-Categories
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Owned and rode: Honda 100H, Honda MBX 125, Kawasaki AR 125, Suzuki RG 125 Pepsi, Honda NSR125 RK, Honda NRS 125 race bike, Suzuki GSXR 400 Bandit, Aprilia RS 125 O2, Honda CG125, Kawasaki KMX 125, Aprilia RS 125 O6, Suzuki XT225 and now Honda XR 400. ( A few scooters and other dead beats in between)

[Frost]

Sounds like it's the engine that's the problem and not the gear box. Gear boxes are EXPENSIVE, so i very much recommend you stick with the one you've got. A full top end rebuild is routine maintenance on these bikes so just get that done.

[Kickstart]

Hi

No RS125 I have seen has a 2 stroke feed directly to the main, just a single feed to the carb. But not looked over a current one in detail.

Top end rebuild is easy enough. Gentle afternoons work. Gearboxes are pretty tough and generally don't cause a major problem.

Had the bike run out of oil?

All the best

Keith
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[steveh]

if you need a gearbox i have one that came from a bike i did, top end seizure/bottom end failure.


steve.
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[SillyMe]

[cb1rocket]

why hasn't he replied? sounds like he actually has forgotten to add 2 stroke oil to the bike............

[lmcarr1979]

no i didnt forget to put oil in as i did it as soon as i got it same as coolant i have taken it to a respectable aprilia dealers in exeter who has stripped the engine down and have identified the problem as the gearbox being seized

considering i only had the bike for around 2 hours and did only 20 ish miles on it the only explanation is the lad i brought it of new of the fault hence to him selling it but then i have been through paypal and ebay to open a case dispute and it so happens to be under the one catergrie that isnt supported by protection so all in all its a nightmare

[lmcarr1979]

oh and i cant reply str8 away to posts as i work from 8 til 10 mon to fri so plz bear this in mind hence why i havent replied sooner

[N cee thirty]

[lmcarr1979]

only cost 40 an hour so not bad and has taken hour and half to strip it so all in all cheap

[N cee thirty]

what you planning on doin?
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[lmcarr1979]

find a engine and replace it

[Kickstart]

Hi

Why has the gearbox seized? No gearbox oil? If so where has it gone? Crank seal or smashed casing from a chain snapping are the most likely. Main other cause of a gearbox seizure is probably it managing to engage 2 gear at once (used to be something BMW K series bikes suffered from occasionally), and if it is that then probably just worn shift forks.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Frost]

So long as the gears and selector barrel are okay it's worth fixing the gearbox. Selector forks, seals, pumps etc are all cheap to sort compared to buying a new engine.

[alains]

ok , this bike is more popular in germany , i suggest you use this link (some engines are new)
https://shop.ebay.de/i.html?_trkparms=65%253A12%257C66%253A2%257C39%253A1%257C72%253A3357&rt=nc&_nkw=rotax%20122&_dmpt=Motorrad_Kraftradteile&_trksid=p3286.c0.m14.l1513&_pgn=1
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[lmcarr1979]

i have looked on the german ebay but i dont understand german mate so no good for me

[alains]

tell me your budget , i will look about
this one is a totaly rebuilt engine by a pro , shipping will be around 22 quids
https://cgi.ebay.de/Aprilia-RS-125-Motor-Getriebe-komplett-Rotax-122-NEU-/360303186860?pt=Motorrad_Kraftradteile&hash=item53e3be53ac

https://cgi.ebay.de/Motor-Rotax-122-Kein-Austausch-Aprilia-RS-125-/150472708024?pt=Motorrad_Kraftradteile&hash=item2308df4fb8
this one comes with 1 year garantee (shipping £15ish)
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the worst day fishing is better than the best day working