Possibility of a 125 engine in an 50cc 03 derbi senda frame

[Dannylewis27]

I have my derbi fully de restricted an it can hit 50 but I'm not financially in a place to buy a 125, I've seen a few posts of people wanting to do this but no real out comes

Could I replace my 50 2t for a 125 2t engine

If anyone has any info of engine sizes that fit i.e. a DT125

And any other issues?
____________________
Derbi senda R, 03
Aprilia RS 125 Extrema, 98

[Timmeh]

[Englishman]

It really doesn't seem worth it - particularly as you say you can't afford a 125. You'd end up with an un-insurable monstrosity that wouldn't work as well as any 125 that you could buy for the same money as doing this.
Better yet, spend the money doing your tests on a rented/borrowed 125, then live with the 50cc until you have enough money for a decent bigger bike. You'll be amazed what you can get for 125cc money when you're not stuck with having to get a 125.
____________________
INSTALLING SUMMER... ████████░░░░░░░░44% DONE. Installation failed.
404 error: Season not found.

[Teflon-Mike]

Ibelieve that the Derbi Senda 125 uses the 50 frame.... how much use that nugget may be I dont know.

PRACTICALLY: Derbi 50 is a MOPED.
If you want to modify it to be a 125, and use it legally on the roads, say for such things as taking tests on... then you would need to get the thing re-registered, under new licencing catagory of MOTORCYCLE

So after all the engineering niggles, you have a big paper-work one, which I believe starts with something like a £350 fee to VOSA for Identity & complience inspections..... then the hassles of insuring it as a modded vehicle.

As a poverty measure; its a non-starter really; moped will fetch more money sold on as a moped, and a 125 would be cheaper to buy, than build, and live with.

If 50 is in any kind of road-worthy shape, ought to fetch if not enough to fund a propper 125, at least a fair chunk, even if its only a CG125 or heaven forbid a Chinky CG-Copy!
____________________
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?'

[Rob W]

Really cant see it being worth any of the ballache that will ensue to be honest.
____________________
'16 GSX-S1000F

[Boxing]

Only people I've known willing to put a 125CC engine in a 50CC, is 16 year old's who want more speed. Then they have a crash and the insurance inspect it and see it has a 125CC, so then the rider gets disqualified and the insurance is void, for telling them lies.

[Matt-]

It's really not worth it.

There's no other way of putting it

if you into your supermoto's or motocross / dirt bike style bike's
go for a DT125, their great little bike's and can be highly modified with some mechanical knowledge and money

or RX125 SX125 or something like that

Hope this help's

Matt
____________________
RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010