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View Full Version : What engine should my RS50 have?



DunkRS50
08-10-2008, 06:02 PM
Just bought my first RS50 :D

What engine should be in it? - 1995 RS50

Cheers

Bandit79
08-10-2008, 06:13 PM
Typical Minarelli Motori AM6 i guess :)

mx50boy
08-10-2008, 06:15 PM
dont the older ones have the AM5?

Aprilia af1
08-10-2008, 06:39 PM
Just bought my first RS50 :D

What engine should be in it? - 1995 RS50

Cheers


If its the bike in your picture, then it will be an rv series engine, easy to check if the reed valve is in the barrel then it's an rv series engine, also at the bottom right of the left hand engine case it should tell you what it is E.G rv6 ap or rv5 ap etc, also that bike in your picture looks exactly like the aprilia af1 futura.

DunkRS50
08-11-2008, 05:55 AM
Can you get a BBK for a RV series engine then?

Rs50_2007kris
08-11-2008, 08:34 AM
aha, thats the bike that ermok was going to buy

DunkRS50
08-12-2008, 07:44 AM
Well i'll give you a full update on it when i collect it thursday :)

So is it a AF1 50 then?

Pictures off Ebay:

Aprilia af1
08-12-2008, 04:53 PM
Can you get a BBK for a RV series engine then?


Yeah you can get big bore kits for the rv series engine as i have a couple of them, i have only ever seen 70cc and 65cc ones for that type of engine, and mainly polini and malossi , polini aluminium are surposed to be the best, the only thing is i have never seen these types of bbk's for sale in england only in other countries.
e.g. opvoeren.nl and other sites.

Aprilia af1
08-12-2008, 04:56 PM
[QUOTE=DunkRS50;1935731]Well i'll give you a full update on it when i collect it thursday :)

So is it a AF1 50 then?

it looks exactly like an af1 futura 50 to me, try google images for af1 50 futura etc, but it may still be an rs50, an early one.

RS01
08-12-2008, 06:39 PM
af1 im pretty sure from the guages and rear end :S?

Sududri134
08-12-2008, 07:15 PM
Am I the only one noticing the 21000miles on the gauge?..

DAMN! respect man! :worship:

The highest i've ever seen on an bike up here (RS/RX/MX) is 10000miles

Rs50_2007kris
08-13-2008, 02:45 AM
Think its the old RS50 extrema..

Ermok_RS
08-13-2008, 07:25 AM
Yea I was going to buy it, but it was dodgy as fuck, no V5 logbook, no tax. Didn't seem worth it. Had alot of rust too, looked like it needed alot of work. But have fun with it! :)

Aprilia af1
08-13-2008, 09:17 AM
Think its the old RS50 extrema..

The aprilia rs50 extrema was made in 1993 onwards and this is a 1992 model, so is probably an af1, although there is a posiblity it is an rs50 frame and clocks with af1 body pannels and wheels.
if you check out this website http://www.bikepics.com/aprilia/af1futura50/92/pics.asp
you can see a black aprilia af1 futura 50 with red wheels a little way down the page which looks the same as the one on here.
The only way of confirming it is an af1 is if the engine is an rv series(possibly rv4 ap or rv6 ap)with the reeds in the barrel and not in the crankcase as these are the only engines that fit in the mountings on the af1 frame.
Hope this helps.

Aprilia af1
08-13-2008, 09:23 AM
Am I the only one noticing the 21000miles on the gauge?..

DAMN! respect man! :worship:

The highest i've ever seen on an bike up here (RS/RX/MX) is 10000miles


21000miles, thought they were in kilometres?
my bike aprili af1 replica, has done 27000 and something km's but has had a rebuild 3 thousand km's ago.

patchb
08-13-2008, 09:35 AM
21000 is low, although at that age i should imagine it's been round the clock already. My RS has 32000KM and thats a year 2000.

Aprilia af1
08-13-2008, 09:41 AM
21000 is low, although at that age i should imagine it's been round the clock already. My RS has 32000KM and thats a year 2000.


I doubt that it's been round the clock because as i said mine has done 27,000km's and mine is a 92 model,which is probably true, it was an import though.
my bro's derbi gpr50 is a 2003 model and that has done 29,000 nearly 30,000km's.

DunkRS50
08-14-2008, 11:55 AM
Turns out its a 1995 RS50 :)

So what engine? :bump:

bourney2007
08-14-2008, 01:12 PM
Turns out its a 1995 RS50 :)

So what engine? :bump:



how many gears has it got?

either an AM5 or an AM6. Probably AM6

DunkRS50
08-14-2008, 01:13 PM
Not sure on the gears, havn't ridden it much yet - no MOT :(

Little tatty but a solid bike, runs sweet as a nut, quite nippy too :D

Dan92
08-14-2008, 01:56 PM
Oh nice one man, You're in guildford? I'm in chertsey, not too far away.

Getting my RS on the 6th Sept, we should meet up for a ride or something. :)

DunkRS50
08-14-2008, 02:45 PM
Oh nice one man, You're in guildford? I'm in chertsey, not too far away.

Getting my RS on the 6th Sept, we should meet up for a ride or something. :)

Yeah deffo, the more excuses to ride it the better :D

Drop me a Pm or somthing :)

DunkRS50
08-14-2008, 04:21 PM
Right, now things are really confusing me, took farings off, engine says "RV3 AP"?????

Surely it's not a 3 speed? :confused::confused:

Aprilia af1
08-14-2008, 04:24 PM
Turns out its a 1995 RS50 :)

So what engine? :bump:

Can you have a look at the engine and tell me where the carb is connected. either the crankcases or the barrel, because i'm certain it's an rv3,rv4, rv5 or rv6 engine. as i have an rv3,rv4 and 2 rv6 engines all black and the carb and reed valve connects to the barrel.

Aprilia af1
08-14-2008, 04:25 PM
Right, now things are really confusing me, took farings off, engine says "RV3 AP"?????

Surely it's not a 3 speed? :confused::confused:


yeah it's a 3 speed i have the same engine in bits.

DunkRS50
08-14-2008, 04:31 PM
Connects to the barrel.

How are 3 speeds on the road?

Where could i pick up a RV6 engine?

Cheers again

Aprilia af1
08-14-2008, 04:36 PM
Connects to the barrel.

How are 3 speeds on the road?

Where could i pick up a RV6 engine?

Cheers again


3 speeds aren't too bad on the road, not as fast as the rv6 as the gears are different in the two engines, 6 speed has like a couple of gears added and taller ratios. I never tested the 3 speed in the road but did down a track, i would say it could manage about 80/85 kmph where as the rv6 did 105kmph on the road but speedo's are out. i also had 13/40 gearing.

As for where to pick up an rv6 engine i'm not sure, i just looked on ebay and asked people selling af1's for spares as these are basically the motorbikes that have the rv series engine. i would've sold you my rv6 engine but the gearbox went and snapped a shaft.

bourney2007
08-14-2008, 04:41 PM
i bet ermok is gald he didn't buy it now.

Aprilia af1
08-14-2008, 04:54 PM
Dunkrs50, if you have an rs50 frame, then you may be able to fit an am6 engine in the frame(but judging by the engine it should definately be an af1 futura), could you post a couple of pics of the engine both sides and the mounting brackets, because i have just remembered that the rv engines have different mounting places, unless your frame is an rs frame with different brackets to fit an rv 3 ap engine.

DunkRS50
08-14-2008, 04:56 PM
How can it be a AF1 futura if its a 1995 bike? was registerd in 1996.


Back in 5, gonna whip off the fairings and take some piccys.

Aprilia af1
08-14-2008, 05:07 PM
How can it be a AF1 futura if its a 1995 bike? was registerd in 1996.


Back in 5, gonna whip off the fairings and take some piccys.


I don't know how it can be an af1 futura, but they are the fairings it has and the engine, although futura's and other af1's have rv3 and rv4 engines. the rv3 ap being a rare engine. I'm not sure which years the futura models were made but they were made from 1992. Your bike could be an import? and registered as an rs50?
But i've never seen an rs50 with those fairings and engine as those engines don't fit any rs50 frames.

DunkRS50
08-14-2008, 05:12 PM
Heres some pics, not the best as it's dark.

DunkRS50
08-14-2008, 05:19 PM
Servers not working, so heres some more on PB.

http://i14.photobucket.com/albums/a321/spunkun/DSC00129.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00130.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00131.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00132.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00133.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00134.jpg

http://i14.photobucket.com/albums/a321/spunkun/DSC00135.jpg

Aprilia af1
08-14-2008, 05:40 PM
Thanks for the pics, i'm not sure now whether it is the rs50 frame or an af1 frame like i have. yours looks more like an rs50 frame, and could have been modified and welded to fit the rv3 engine, i will have a look at mine tomorrow and check if your brackets look the same as mine, if not then i would say somone has welded af1 engine brackets to your rs50 frame.

DunkRS50
08-14-2008, 05:42 PM
Could it be a Aprilia RS-50 Extrema? 1993-1995

http://www.apriliaforum.com/forums/attachment.php?attachmentid=43819&stc=1&d=1146954104

Aprilia af1
08-14-2008, 05:57 PM
The frames on the rs50's you showed look similar, but they have the am series engine whereas yours has the rv engine.
I have looked on apriliaforum.nl and found an aprilia af1 futura, it has an rv3 engine, and same frame, fairings and a rear muguard covering the wheels like yours. Has your bike been imported? or re-registered at any point. because i believe it is an aprilia af1 futura because of the engine and fairings. but i could be wrong.

DunkRS50
08-14-2008, 06:00 PM
I thought they went to the AM series in 1998?

Aprilia af1
08-14-2008, 06:11 PM
I thought they went to the AM series in 1998?


Yes they did in 1998, but the rs50's made in the early 90's had am series engines also but they were am3, 4 and 5 speed versions not the am6 6speed.
but also some af1's had the am series engines am3 i think,some late ones possibly had the am5/6, but all other af1's had the rv engine like yours so that's why i think yours is a futura. but could have been imported and possibly re-registered as an rs50. how did you find out it was an rs50 1995?

DunkRS50
08-14-2008, 06:16 PM
Not 100% sure on the year, bought as a 1995, but was first registerd in 1996.

You can't register somthing to a reg thats newer than it, and its M reg.

Igot the frame numbers if there any use to identifying it?

Aprilia af1
08-14-2008, 06:34 PM
Not 100% sure on the year, bought as a 1995, but was first registerd in 1996.

You can't register somthing to a reg thats newer than it, and its M reg.

Igot the frame numbers if there any use to identifying it?

I think the bike has been imported and had an age replated plate, because i did a check on the number plate and the manufacture date was 19950000 which is odd because it doesn't specify any days or months, and it was first registered in 1996. also there was the make: aprilia but no model, which makes me think again it has been imported or something changed/ new log book applied for.
Well i don't really know how to identify the bike with the frame numbers, so they probablly wouldn't be any use.

DunkRS50
08-14-2008, 06:38 PM
Well I'm confused, looks like RV6 is the way forwards.

But what do i buy bits for? AF1? RS50?

Going to call a Aprilia dealer tomorrow and ask if they can look up my chassis number.

The frame doesn't look like it's been fabricated at all, the RV engine is what fits it.

The rear end, and light looks like a RS50 but the rest like a AF1 Futura.

Cheers for all your help :D

Aprilia af1
08-14-2008, 06:46 PM
Well I'm confused, looks like RV6 is the way forwards.

But what do i buy bits for? AF1? RS50?

Going to call a Aprilia dealer tomorrow and ask if they can look up my chassis number.

The frame doesn't look like it's been fabricated at all, the RV engine is what fits it.

The rear end, and light looks like a RS50 but the rest like a AF1 Futura.

Cheers for all your help :D

Well i would buy bits for both really, engine wise, af1, well rv series engine parts, if it's any help the air cooled p series engines are internally the same just don't have the oil pump or waterpumps. As for rear swing arms etc you could buy rs50 parts, rear sprockets and chain rs50 1998 and pre1998 rs50 fit but front sprocket is different.

Well if the frame doesn't look to be changed it is an aprilia af1.
You also say the rear end looks like an rs50, do you mean the swing arm or the rear fairing,i don't mean to be rude but your bike has different wheels to the rs50 and the rear fairing is more square to the 1998 and below rs50's. rear light may be similar or the same though and the front light is similar/ the same as some rs50's(early ones).
If you need anymore help just ask.

DunkRS50
08-15-2008, 07:23 AM
Just been for a spin on my drive, got into 4th, then i ran out of drive, it deffo has at least 4 gears.

Also, the bottom fairing bolts don't line up?

Aprilia af1
08-15-2008, 09:46 AM
Just been for a spin on my drive, got into 4th, then i ran out of drive, it deffo has at least 4 gears.

Also, the bottom fairing bolts don't line up?


Well as you said before your engine case says rv3 ap, but you say you have 4gears? well perhaps you have a four speed in the 3 speed cases as it can be done, they're the same width. To make sure how many gears you have why don't you just change the gears whilst stationary and let the clutch out until it bites to make sure it's in the gear.

As for the fairing bolts, where do you mean they don't line up, underneath the fairing or on the side at the bottom?

DunkRS50
08-15-2008, 11:49 AM
Side at the bottom

Aprilia af1
08-15-2008, 05:00 PM
Side at the bottom

perhapse the brackets have been bent? are they far off the whole?

bourney2007
08-16-2008, 12:06 PM
go up the street on it and find out how many gears it has.

Ermok_RS
08-16-2008, 01:23 PM
i bet ermok is gald he didn't buy it now.

Very, lol!

DunkRS50
08-17-2008, 05:16 PM
Very, lol!

It's actually a quality liltte bike, even if i don't know what it is!

Well it wouldn't start yesterday so i changed the plug to a old used one i had laying in my toolbox, was running fine, took it up the road and started missing when in the powerband, need to buy a new one as this ones blatently fucked :(

DunkRS50
08-21-2008, 04:08 PM
Well plug changed, missfire gone :D

MOT tomorrow!, I have checked, checked, and double checked everything.

Wish it luck :peace: