50cc 2T more power needed

[TravisBickle]

Hi guys after some advice here if possible please.

My work sometimes requires me to move vehicles around the local area and I often get stuck at the other end without a lift back. We live and operate rurally so public transport is virtually non-existent. I've bought a Di Blasi fold-up scooter which is awesome, was worth the money just for the comedy value alone, goes in the boot of any car and light enough to lift at just over 30kg. Perfect solution!

However some of the roads I have to use it on are 70mph dual carriageways. Some extra power would be handy. Currently getting about 30mph. Obviously I'm not expecting to get like 60mph out of it but another 5 or 10mph wouldn't go a miss! I have a full bike licence.

I've searched for Di Blasi specific big bore kits but having no joy. I don't mind spending a bit of money on it, is there anything I can do with this so get more oomph out of it? Happy to send the bore/piston away if they can be enlarged or whatever and carb rejetted if possible? I'm not overly mechanically-minded so would need to have someone else do the work but happy to pay for it.

Please help x

[Nobby the Bastard]

Why not just by a 125 monkey bike?
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[garth]

Apparently same as the AV7 big bore kits - so can go to 74cc.

Will need to rejet and piss about with the variator to get the best out of it though.

Disclaimer, I know nothing about these.
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You ain't a has been if you never was

[TravisBickle]

[TravisBickle]

[Easy-X]

That fold up scooter is road legal? Really?!

It looks like a similar engine to the 2-stroke push-bike conversion I did. You might want to seek parts and information in that area.

IIRC the main gains would be rebarrel to 80cc, a decent exhaust, traditional 2-stroke port fettling, boost bottle and racing carb... oh, and don't forget the basics: drop some teeth off the rear sprocket (or add some to the front one) and you'll get more speed at the cost of less torque.

If all else fails...

NITRO

https://www.youtube.com/watch?v=KUrNwRRcriY&t
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[-]

I had to have a look for that model. It’s quite impressive for 32KG.

I’m not sure the handling and brakes will be up to much over 30mph though. Looking at the engine and pipe, I doubt it’s restricted, so a bore kit will be the best option if you’ve got the balls to do 45 mph on it!

The 74cc kits are only £60, but up the carb main jet to match or it’ll seize.
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TZR250 2MA road, TZR250 1KT road, TZR250 2MA race, TDR250, YZF-750R Boost colours.
Jaguar S Type 3.0 V6 Sport R, VW Transporter T5 GP LWB Shuttle 140ps DSG.

[WD Forte]

look here

https://di-blasi-r7-tuning.de/zylinderkitdiblasir7.html
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bikers smell of wee

[Teflon-Mike]

Power is force x speed. Faster you go, more wind resistance you get, so you need more poser still, its sort of an expomemtial, and for typical bike & person shaped vehicle like a motorbike, you need aprox 3bhp to go 30mph. 6bhp will get you to about 50, ie 2x the power but not 2x the speed; 9bhp, will nudge 60, so 3x the power for 2x the speed. 12 bhp gets you to about 70mph; 24 about 90mph, and then it starts to get daft, and 30 bhp just about gets you nucging 100, but to go faster still? 120 needs about 90 bhp, and you have a ramp that sort of suggests that each time you try dounle the speed you need tripple the power...
And even id you can make the power... you need the gearing to get the speed....
A-N-D we are talking about a moped motor....
When I was 16, long long ago in a galexy not too far away... I renovated a Yamnahga DT50E and my Grandad got a bit interested in 'tuning' the thing, diginng a cottonn bouind book calle tuning the 3T for speed, full of pictures of villiers lawn-mower motors and BSA bantam engines, out the loft.... getting over exited about 'primary compression', and filling the crank cases with ali loaded araldite, we di get the thing typ to almost 60 mph over a measued 1/2 mile,before it blew its crank seals out, leaving ME to push the fecker home, and Pops to make some seal stays and ponder the porting!
I did discover MUCH later he had ideas for the gearbox, to use on his lathe, and HOPED that I'd blow the thing up so he could have it.. but thats another yarn!
Point is, even going big-bore you are NOT really into the teritory of big power, and even 50mph on an air-cooled 50 motor would be an achievement, likely to be short lived!
And you STILL meed to match the geaaring to get the mph....
On which basis, my advice is better to leave it stock and gt back slowly, than have it go poip and leave you a long walk and hard push.....
Think about it, the LSR for a 50cc 2 wheeler, and thats a super-tuned streamliner, is still less thanb 100mph... trying to tune an air-cooled mini-bie motor, its like VW beetles.. huge claims are made cos they make so little to start with, but even the best of them dont actually make all that much power relecively....
And duel cariageways? Thr audi-cochs will still be tryomh to cruise at 2mp under insta-ban speeds up your chuff regardless... at least at 25mph it wont hurt too much if you jump off into the hedge top doidge one!!! It would hurt a lot more than 2x as much if you could make it go 50, and youd still not stay ahead of an Audi enema!!!
Personally, If me I'd refuse to move veghickle unless a 2nd person gave me lift back.... Do you get paid enough for this kind of shit? And what about insurance?: Do you have cover for work use to start with? How much will that go up if you declare tuning mods? And will workpay it?
Make then give you a lift or pay for a taxi, thats likely cheaper, safer and FAR more comfy, I say.... leave faffince with, moped motors to 16 yer-olds and the clinically derranged!!!
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[garth]

Shut up Tef.
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You ain't a has been if you never was

[Easy-X]

Shorter answer: if you double the power don't expect double the speed!

I rebuilt my ebike from 500W to 1500W - triple the power! - but that only got me from ~20mph to 30. So 300% power increase = 50% speed increase, YMMV obviously.

At best I would guess you might double the power output of that little 2-stroke. I reckon it'd top out at 35 if it's doing 30 now

Completely left field suggestion: buy a car with one of those trailers with the front wheel thingies... like wot the AA/RAC use to tow your car if it's kaput.
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[-]

I doubt it’s restricted anyway as it looks a very simple 2T engine without much of an expansion chamber, but a 74cc kit with appropriate jetting and intake widening should be able to push out 7-8bhp.

Weighing in at 32KG’s it should push 40mph surely?
How much did an unrestricted FS1E push out and weigh? They were good for 50mph.
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TZR250 2MA road, TZR250 1KT road, TZR250 2MA race, TDR250, YZF-750R Boost colours.
Jaguar S Type 3.0 V6 Sport R, VW Transporter T5 GP LWB Shuttle 140ps DSG.

[A100man]

[stevo as b4]

I personally think that it's a waste of time to mess with that tiny folding scooter, and that the engine isn't a tunable one. I've got some experience of just crap engines.

Ever wondered why people say not to tune weak poor breathing motors like the Peugeot speedfight 100? It's because they are either a poor design, something already pushed to the limit, or because they can't handle extra power well. I spent £600 on a 100cc Peugeot and got 4extra bhp out of it and 10mph when it ran right which was never really.

Don't waste your time and money, and buy a decent Monkey bike that'll fit into a car boot. You can probably fit a Honda MSX in the average estate car without taking anything other than the mirrors off.

If your scooter was a proper one with more brakes and better suspension than it needs, and it had a really tunable engine like the Minarelli AM6 then I'd say go for it though.

[TravisBickle]

[Easy-X]

[TravisBickle]

Yeah sure next time I have to visit a client up that way I'll hit you up.

[TravisBickle]

[Riejufixing]

May be some clues here if you read carefully:

https://www.mopedarmy.com/forums/read.php?1,3776786

[TravisBickle]

[RhynoCZ]

You're going to be sorry you ever took the engine apart.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[TravisBickle]

[RhynoCZ]

[Teflon-Mike]

[Easy-X]

I might be wrong but it looks to be belt driven from the photos?

But yes... going from 49cc to 72cc on my scooter build did nothing for the top speed but it was noticeably more torquey (Got it >40mph taking off the RPM restriction.)
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter