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| DEADmetal |
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DEADmetal
Borekit Bruiser
Joined: 25 Apr 2014
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 Posted: 17:21 - 25 Apr 2014  Post subject: Getting RS 125, need advice |
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Hello, i'll meet two RS 125 owners this weekend to decide which bike to take.
Bikes:
One bike - 2006 RS 125 - supposedly has 154 Polini piston and bored out cylinder, also a low mileage for its year - 6000 miles, arrow exhaust but with seemingly rusted pipe, supposedly derestricted, used with Yacco MVX 1000 oil.
Another bike - 2007 RS 125 "Spains No. 1" - the owner seems to know his stuff, supposedly derestricted, stock cylinder, owner claims top speed of 118 mph (190 km/h), used with Motul oil.
Questions:
1. Is there an easy way i can check if the cylinder is stock or bored out?
2. How can i check for a bent frame?
3. Any advices on inspecting a bike? What faults should i check for?
4. Is the top speed of 118 mph realistic for stock piston?
5. Is "Spains No. 1" somehow different from other models? Is it more rare?
Big thanks in advance! |
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Nexus Icon
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| Posted: 17:28 - 25 Apr 2014 Post subject: |
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Isn't "Spain's #1" just the Fortuna cigs paint job?
Also, 118mph? Tell him, "Do fuck off," from me. 
Personally, I wouldn't touch either of those. The first sounds like potential trouble if you're not 100% sure exactly what you're buying and the second is owned by someone who is clearly full of shit. If he's lied about the top speed, something easily checked, how many lies will he tell you about the stuff you can't check so easily?
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| P.addy |
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P.addy
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| Posted: 17:36 - 25 Apr 2014 Post subject: |
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Top speed, indicating about 100, real speed about 92-95 fully derestricted most likely.
With the 2006 one.
Exhaust is likely from a pre-03 one, no cat to rip out which is likely the reason for rust. Get it checked though.
6000 miles, probably fairly hard miles too... due some form of rebuild/piston/rings at least.
1- Not easily.
2- Bent frame, hope and dreams really. Just check everything lines up nicely.
3- History of ring changes, check for the usual stuff, chain slack, tyre tread, notchy steering, brake pad/disk condition. Assess seller a little too. "Av ad it to 105 m8, still pullin" is one to steer clear of really IMHO.
4- as I said above, not a chance.
5- Nah, see plenty of them, was a standard colour. |
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| MarJay |
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MarJay
But it's British!
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| Posted: 18:03 - 25 Apr 2014 Post subject: |
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118mph.
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Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another. |
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andy_uk
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| Knacker |
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Knacker
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| Posted: 18:31 - 25 Apr 2014 Post subject: |
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My best advice would be walk away from both of them.
118mph
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| Rogerborg |
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Rogerborg
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| Posted: 19:08 - 25 Apr 2014 Post subject: |
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Why a full power 2-stroke?
2nd or 3rd bike for cocking around on a full license?
17 year old on a CBT, dem 5-0 boyz know nuffink, dem is never catch me?
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GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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| DEADmetal |
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DEADmetal
Borekit Bruiser
Joined: 25 Apr 2014
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| Kickstart |
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Kickstart
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Posted: 19:44 - 25 Apr 2014  Post subject: Re: Getting RS 125, need advice |
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| DEADmetal wrote: |
One bike - 2006 RS 125 - supposedly has 154 Polini piston and bored out cylinder, also a low mileage for its year - 6000 miles, arrow exhaust but with seemingly rusted pipe, supposedly derestricted, used with Yacco MVX 1000 oil. |
If bored out to 154, not sure what that would do with the port timing. Ports are angled so an extent, so boring out by quite a margin could do odd things. What oil?
| DEADmetal wrote: | Another bike - 2007 RS 125 "Spains No. 1" - the owner seems to know his stuff, supposedly derestricted, stock cylinder, owner claims top speed of 118 mph (190 km/h), used with Motul oil. |
Not a hope on that for the true top speed. Speedo might seriously over read. On my early RS125 (so 34mm carb as standard, decent stock exhaust, etc) I have managed to get an indicated 185kmh, but not a hope in hell that is accurate.
| DEADmetal wrote: | 1. Is there an easy way i can check if the cylinder is stock or bored out? |
Not easily. You can check to see if the barrel is a polini one (or the like).
| DEADmetal wrote: | 2. How can i check for a bent frame? |
Look for cracked paint in stressed areas. However the RS frame is pretty strong, but is largely cast alloy and more likely to crack in a serious smash. Rear subframe could bend, but look from behind and see how the back of it lines up with the rear wheel.
| DEADmetal wrote: | 3. Any advices on inspecting a bike? What faults should i check for? |
Look for accident damage. Look for proof of a recent new set of rings. Look for pitting on the fork chrome. Feel for vertical play in the rear suspension. Check for a leaking rear shock. Check for a worn brake disk (ie, scoring to the disk after someone ran the pads down to nothing), check for the amount of life left in the tyres, etc.
| DEADmetal wrote: | 4. Is the top speed of 118 mph realistic for stock piston? |
Not a hope in hell for a true top speed.
Note that if you are a learner you are limited to an 11kW 125cc bike. To get a true 100mph is going to need over 20kW.
All the best
Keith
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Rogerborg
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| DEADmetal |
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DEADmetal
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Joined: 25 Apr 2014
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| Posted: 14:40 - 26 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| Kickstart wrote: |
If bored out to 154, not sure what that would do with the port timing. Ports are angled so an extent, so boring out by quite a margin could do odd things. What oil? |
Good point with port timing but i've seen some videos on youtube - these bikes run with 154 pistons as they should unless they don't have bored out cylinders but 154 kit cylinders instead? Yacco MVX 1000 oil - is it any good? I imagine Motul is better.
Another bike turned up for much lower price. 2006 year, it suffered some accident with front plastics, also doesn't have front brake pad. And the owner has disconnected oil pump - uses premix instead, with Motul oil. 2000 km ago, that bike has had engine rebuilt. The one real downside - it has 30000 km on it.
Pics:
https://www.autogidas.lt/aprilia-rs-2006-021082278.html
Is it worth looking at? Is 30000 kilometers not too much for the rest of the bike (as the engine has been rebuilt) to be in ok condition?
I think i need to familiarize you with my situation a bit. I have full licence so i can ride any bike and relatively speaking, i know how to ride.
I'm thinking of getting RS 125 only because it's at least 3 times cheaper than say 2007 Yamaha R6 (more money left for riding expenses) and i think i'd have a blast with it on small countryside roads, on the forest non tarmac roads, basically - everywhere i would like to go. Where with 600cc "superbike" i'd be stranded on tarmac roads. Of course, i could take 600cc on these small roads as well but it would somehow be improper, wouldn't it? I'd have much greater chance to lose my licence because of speeding and i might not have that much fun in city roads, within the speed limit with 600cc bike. And lastly, there is a psychological aspect of my choice - i would not be able to enjoy RS 125 as much if i'd get it after i get 600cc. However, with 600cc i would be much more confident of mechanical reliability. Also, i want to practice some stunt riding.
Alright i think i've mentioned pretty much everything now, sorry if it's overly long. I am nearly 28 years old, 192 cm and weighing 85 kg btw. So what are your thoughts on that? I'm kinda lost atm. What would you do if you were facing my dilemma?
Nice avatar picture btw. |
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| woo |
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woo
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Kickstart
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| DEADmetal |
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DEADmetal
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Kickstart
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| Posted: 19:31 - 26 Apr 2014 Post subject: |
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Hi
Pre mix would be a pain, carrying a bottle and measuring it out with each tank of fuel. If the oil pump has just been left running with no oil (just premix) then I would suspect the pump might be a bit worn. New pump wouldn't be hard to fit though.
With an oil pump the mixture varies (from memory Aprilia listed it as between 0.7% and 2%) while with premix it is a fixed percentage of the fuel. I suspect that the 2% is when the fuel usage is low (ie, closed throttle) but revs are high so X amount of oil is now far more in comparison to the fuel. Run on premix this is the time when the oil mix is at its leanest.
Where a premix 2 stroke can suffer is when running with a closed throttle but under load / revs (ie, down a long steep hill).
As to the speedo, the speedo drives are known to be weak
All the best
Keith
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| DEADmetal |
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DEADmetal
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Kickstart
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| deadwolf |
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deadwolf
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| Posted: 14:36 - 27 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| DEADmetal wrote: |
I'm thinking of getting RS 125 only because it's at least 3 times cheaper than say 2007 Yamaha R6 (more money left for riding expenses) and i think i'd have a blast with it on small countryside roads, on the forest non tarmac roads, basically - everywhere i would like to go. Where with 600cc "superbike" i'd be stranded on tarmac roads. Of course, i could take 600cc on these small roads as well but it would somehow be improper, wouldn't it? |
Do you mean dirt/gravel roads? If yes..
https://www.youtube.com/watch?v=yO4niuCUPPI
I'd suggest searching Youtube for 'sportbike off roading' or something like that. Plenty of folks have taken seemingly-inappropriate bikes off road for better or worse. Most will manage alright enough, but don't expect kneedragging or performance and speed equivalent to dedicated offroaders.
| DEADmetal wrote: |
I'd have much greater chance to lose my licence because of speeding and i might not have that much fun in city roads, within the speed limit with 600cc bike. And lastly, there is a psychological aspect of my choice - i would not be able to enjoy RS 125 as much if i'd get it after i get 600cc. However, with 600cc i would be much more confident of mechanical reliability. Also, i want to practice some stunt riding.
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I wouldn't worry about that tbh. Once you end up with two or more bikes, you should be able to appreciate each bike's unique qualities and know to use them for different situations i.e. 600 for commuting and RS 125 for weekend fun where their strengths can be fully utilised. IMO a sports 600 and RS 125 are different enough in behaviour, weight, chuckability etc to be considered distinct.
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| DEADmetal |
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DEADmetal
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| Posted: 15:16 - 27 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| deadwolf wrote: |
Do you mean dirt/gravel roads? If yes..
https://www.youtube.com/watch?v=yO4niuCUPPI
I'd suggest searching Youtube for 'sportbike off roading' or something like that. Plenty of folks have taken seemingly-inappropriate bikes off road for better or worse. Most will manage alright enough, but don't expect kneedragging or performance and speed equivalent to dedicated offroaders. |
I've seen that video before. Awesome journey. However, i wouldn't take 4600 euro R6 to the forest or bumpy gravel road just because i would like to explore it. I would be regreting that with every bump as its suspension is made for track use, not for bumpy roads and there's the mud / dust... it's just so improper to me.
Where with 1300 euro RS 125, i would only have fun, without any second thoughts. I would also have almost no problems with accidentally dropping it on sliders on gravel, while trying to drift.
| deadwolf wrote: |
I wouldn't worry about that tbh. Once you end up with two or more bikes, you should be able to appreciate each bike's unique qualities and know to use them for different situations i.e. 600 for commuting and RS 125 for weekend fun where their strengths can be fully utilised. IMO a sports 600 and RS 125 are different enough in behaviour, weight, chuckability etc to be considered distinct. |
Indeed, the bikes are just too different. I realize that. The only similarity in them is that both are strictly designed for track use. However, i'd avoid commuting with R6. I would be too afraid that it would get stolen, although i'm getting GPS tracker device for RS 125 or R6 but i don't know how exactly useful it would prove in the case of theft.
Then there is another problem - money. I think it marks the bottom line. Even if i'd squeeze it for R6, i'd have not much left for riding expenses where with RS 125, i'd ride as much as i want. Yeah both bikes would be awesome but that's off my limits currently. Maybe if i'll succeed in getting a better job this summer, i'd also buy R6. Yeah i think it's the best way around it - i shall get RS 125, then later this summer get R6 if i can (it would also be cheaper in mid summer).
What are your thoughts on me on RS 125 btw? I don't give much attention to what people think bike seating / looks wise but since we are that far, i'd like to know what you think. I'm almost 28 years old, 191 cm, weighing 85 kg. Will be riding with my gf occasionally. Also, wouldn't it lack power with two o us?
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| deadwolf |
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deadwolf
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| Posted: 16:11 - 27 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| DEADmetal wrote: |
I've seen that video before. Awesome journey. However, i wouldn't take 4600 euro R6 to the forest or bumpy gravel road just because i would like to explore it. I would be regreting that with every bump as its suspension is made for track use, not for bumpy roads and there's the mud / dust... it's just so improper to me.
Where with 1300 euro RS 125, i would only have fun, without any second thoughts. I would also have almost no problems with accidentally dropping it on sliders on gravel, while trying to drift.
Indeed, the bikes are just too different. I realize that. The only similarity in them is that both are strictly designed for track use. However, i'd avoid commuting with R6. I would be too afraid that it would get stolen, although i'm getting GPS tracker device for RS 125 or R6 but i don't know how exactly useful it would prove in the case of theft.
Then there is another problem - money. I think it marks the bottom line. Even if i'd squeeze it for R6, i'd have not much left for riding expenses where with RS 125, i'd ride as much as i want. Yeah both bikes would be awesome but that's off my limits currently. Maybe if i'll succeed in getting a better job this summer, i'd also buy R6. Yeah i think it's the best way around it - i shall get RS 125, then later this summer get R6 if i can (it would also be cheaper in mid summer).
What are your thoughts on me on RS 125 btw? I don't give much attention to what people think bike seating / looks wise but since we are that far, i'd like to know what you think. I'm almost 28 years old, 191 cm, weighing 85 kg. Will be riding with my gf occasionally. Also, wouldn't it lack power with two o us?
Cheers |
I wouldn't mind dirtying up a sportbike (in fact I plan to do so once I get one myself, get some of that sweet jungle mud yo) but sliders aren't going to do much off road since there isn't a lot of space to slide. Far more likely hitting something and cracking those expensive fairings, something you wouldn't wanna do as you mentioned that money is a bit tight at the moment.
If you're really keen on unsurfaced roads, why not try a supermoto or dual sport instead of the RS 125? Have you ridden any of those sorts of bikes before? They're far more suitable for the terrain and often cheaper to run.
RS 125 maintenance would also drain the wallet, but that probably evens out against the 600 in terms of the latter's increased wear on consumables. That said, the RS is still a high-maintenance ride.
If you get the RS first, keep in mind that you might actually find the 600 you get later less fun to ride
I'm 168cm/58kg and I quite liked the seating position on my 2003 RS 125. It's quite a large bike for a 125 but could be cramped for someone your height. Recommend having a proper sit on one, check that your elbows aren't rubbing your knees etc
Pillion perch will be quite high up as will the pillion pegs. It won't be particularly comfortable for passengers. Power should be OK, would be more worried about handling in that situation..
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| DEADmetal |
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DEADmetal
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| Posted: 17:35 - 27 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| deadwolf wrote: |
sliders aren't going to do much off road since there isn't a lot of space to slide. Far more likely hitting something and cracking those expensive fairings, something you wouldn't wanna do as you mentioned that money is a bit tight at the moment. |
Yes i realize that. I meant low speed low slides. I would not want to smash RS 125 fairings as well of course but i mean that the slightest scratch on R6 fairings would ruin my mood for the whole day lol as i depict it as ultimate track machine or ultimate clean looking tow ride. Well you get my drift.
| deadwolf wrote: |
If you're really keen on unsurfaced roads, why not try a supermoto or dual sport instead of the RS 125? Have you ridden any of those sorts of bikes before? They're far more suitable for the terrain and often cheaper to run. |
While supermoto would be 10 times more practical than RS 125 or R6 for what i'm going to do this summer, i get my kicks from supersport type riding position and characteristics.
| deadwolf wrote: |
RS 125 maintenance would also drain the wallet, but that probably evens out against the 600 in terms of the latter's increased wear on consumables. That said, the RS is still a high-maintenance ride. |
What consumables do you mean exactly (besides fuel)?
| deadwolf wrote: |
If you get the RS first, keep in mind that you might actually find the 600 you get later less fun to ride |
I was thinking the opposite - that the RS power would not be entertaining after my mind would get spoiled by R6.
| deadwolf wrote: |
I'm 168cm/58kg and I quite liked the seating position on my 2003 RS 125. It's quite a large bike for a 125 but could be cramped for someone your height. Recommend having a proper sit on one, check that your elbows aren't rubbing your knees etc |
I actually had Yamaha TZR 50 some years ago. I was finding it comfortable and my friends said i looked ok on it.
By the way. Is there any way i can tell that RS 125 is properly derestricted with derestriction kit (by riding or inspecting it)? Or that could only be confirmed by bike shop? |
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| P.addy |
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P.addy
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| Kickstart |
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Kickstart
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| Posted: 20:20 - 27 Apr 2014 Post subject: Re: Getting RS 125, need advice |
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| DEADmetal wrote: | What consumables do you mean exactly (besides fuel)? |
Tyres, chains, air filters, spark plugs, etc. The first 2 of these probably last about as long on a sports 125 2 squeak as on a 600 sports bike, but they will be cheaper on the 125.
RS125 is easy to service in many ways. But you need to replace the rings occasionally (I would do them at 6000km), which means a top end engine rebuild. A gentle afternoons work. Gearbox oil occasionally, spark plug every 1000 miles or so, clean the (foam) air filter.
With a big 4 stroke you need to change the oil regularly (rather more of it than a 125 2 stroke), more plugs, likely a paper airfilter that your replace, and valves that need adjusting.
All the best
Keith
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DEADmetal
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stirlinggaz
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Old Thread Alert!
The last post was made 12 years, 136 days ago. Instead of replying here, would creating a new thread be more useful? |
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