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Discussion Starter · #3 ·
Well my bike just freshly full rebuild engine with exhaust , powervalve , modified cdi boysen reeds and standard airbox with panel filter. 28mm carb

took it 3 hour drive to a 2 stroke specialist to have the jetting set up correctly on the dyno ,very interesting day and the guy was brilliant bike pulls perfectly now no hesitations and can cruise at any rpm and it will pickup on demand instantly it feels like a different bike,

was sick of all the guess work with the jetting.

mine pulled 25.9 bhp at the back wheel, Running in the safe limits yes he said could push a little more but then your running in to leaner territory.
He said you wouldn’t be looking at any more bhp without altering the squish

Where did this 33bhp figure come
From when A freshly built bike with performance upgrades achieved less ?
 

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That's good to hear, 26bhp is a decent figure, enough to put a lot of boy racers to shame xD where was it that you took your bike to be tuned?

I think the 33bhp comes from the race spec rs125s, the road versions are understandably, "detuned" versions for reliability reasons, however for a proper full power RS it needs the 34mm carb so your maybe losing a few bhp there.
 

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Discussion Starter · #5 ·
Yes well the bike feels fast enough to me anyway pulls like a train , i only bought one to restore as iv always liked 2 strokes and couldnt afford one when i was 17 the guy who did it specialises in dellorto carbs mostly on vintage air cooled stuff but i knew from watching videos or him hes was the man for the job i rang about 100 companies and nobody would entertain a 2 stroke regarding correctly setting up the carb on the dyno . Very annoying so had to hire a van and do the miles to get it done but the difference of the bike is night and day .

This is the link for my bike
Take a look see what you think
 

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That is a fantastic looking RS, you've done a great job there with the restoration, certainly a good call not buying one when you were younger, too many of these got thrashed and un cared for, certainly some good motivation for me. I've had mine since about 2011, its a 2003. Bought it on a whim because I'd always wanted one, this had been low sided at some point and the main bearings were needing done, I ended up riding it for a year after doing the bearings then shoved it in the shed. I've been on and off restoring it for about 8 years now (very more more off than in that time) only recently started to gain some motivation to actually get the project moving now.
Where did you find you got most of you parts for the bike? and did you buy a new fairing set or just get the original painted?
I am also a bit stuck with what to do with the rear rim, I wanted to powder coat the wheels orange however I cannot get those damn rear disc bolts out, so I'm either going to have to buy a 2nd hand rim and disc or at least try and salvage the disc somehow by drilling the bolts out, either way its a bit of a headache.
I will certainly keep this guy on the radar for when the bikes done though, provided I cannot find someone closer up in Scotland, looks like he's done a top job and good to see another well looked are RS on the roads again.
Thanks for sharing the video.
 

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Discussion Starter · #7 · (Edited)
Thanks for that , yes it certainly takes alot of work and money to bring it to that standard.
most of the parts have been sourced for pj engineering and motorcyclespareseu +ebay , the bike was purchased whole so everything was refurbished or replaced. The fairings are all original aprilia just been professionally repainted, then stickers added to the scheme i wanted. I had it painted in original colour so if the next owner doesn’t like the scheme it can simply be changed back to oem with a sticker kit .

Regarding your wheel /disc you need to heat the bolts and use an impact driver to undo them
It that fails weld a nut to the head of them then undo them that will get them out aslong as they dont snap . Then your into different options im sure you’ll manage, yes powedercoating is the only option for me when it comes to wheels .
I viewed a couple bike before trying to just purchase a decent one but sadly there all absolute turds and people asking 3k upwards for basically a bike that needs a full restoration with a valid Mot , i feel sorry for people who would buy them unknowingly ..

id deffo advise having a dyno set up just takes all the guess work out of it , everyone was saying 120 for main jet for 28mm carb if i would of used that my engine would of lasted 5 minutes,
Figures don't lie and you can see exactly what the engine requires at every throttle position . .
Wish you luck with your project 👍
 
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