Mileage of a 50cc?

TomC · Trackday Trickster Joined: 17 Dec 2004 Karma :

Hello.

Im considering buying a Derbi Senda but i was a little concerned about the mileage of a particular bike. Its done 15000 miles. I read somewhere that when they get to around this mileage the engine may require rebuilding?? Is this true?
I basically want to keep it for a year before buying a car but i dont want to buy it and then have to spend a couple of hundred pounds to get the engine rebuilt if it blows. Is this likely to happen??
How long do 50cc engines usually last?
Any help would be appreciated.
Thanks.

BlueNinja · Trackday Trickster Joined: 14 Dec 2004 Karma :

A 50cc engine will last just as long as any other engine.. as long as you care for it. In theory, they should even last longer.. because theres less moving parts in one.

BUT, they need propper care, and the 15,000 mile rebuild, often even less then that..

The first 50cc I rebuilt was a Suzuki FS50. I didnt even buy a manual because it was so simple.. but I would recommend you buy a Haynes manual as the Senda is i believe, liquid cooled.

Shopping list:
Haynes manual
Top end gaskets, (should be 2)
Piston rings
New spark plug
And if you havent got one, an small socket set..

If you have the above, you should be ok to do it yourself. Its so very simple, anyone can do it. Read the manual, give yourself a day or 2, and your done.

If your stuck, ask here. Im pretty sure there are others with 2 stroke experience here. But it would save you quite a few bob to do the job yourself, plus having the fun of A) learning how it all works, and B) knowing how to rebuild 2 stroke engines..

All the above parts shouldnt even cost you more then 90 squids including a fairly good socket set!

Barker-CBR 600 · Could Be A Chat Bot Joined: 20 Nov 2004 Karma :

How long is a piece of rope?

Like ninja said no reason a fifty wouldnt last as long as any other engine, but its incredibily subjective.

Maintanance, servicing, not crashing, warming it up, letting it cool down, how cold it is when you ride, how hard you ride it.

Theres alot of things to consider.

Best idea is to look through bike trader, see what a brand new bike is worth, then a second hand bike and compare the price drop with mileage.

Once you notice that they arent running anymore, then you can see what kind of mileage gives you some idea of where they become unreliable.

But again, how do you know how its been treated?

Theres no reason it shouldnt last a long time and many miles... but its down to how well its maintained.
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TomC · Trackday Trickster Joined: 17 Dec 2004 Karma :

Ok guys thanks for those replys. Very useful cheers.

TomC · Trackday Trickster Joined: 17 Dec 2004 Karma :

Anyone know of somewhere i can get the parts online??

Barker-CBR 600 · Could Be A Chat Bot Joined: 20 Nov 2004 Karma :

Google it mate,

that or try the phone book for catalogues etc and do some old school mailordering.
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Previous - Gilera DNA50 / XVS125 Dragstar/Honda CBR 600F/GSF 650 Bandit
Current - 2013 Suzuki VZ800 Intruder
'Is this a rhetorical question?'

Josh|RD125LC · World Chat Champion Joined: 08 Sep 2004 Karma :

www.50cc.nl might be a good try. They do all sorts of parts for 50's.
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JonB · Afraid of Mileage Joined: 03 Jun 2004 Karma :

My piaggio has done nearly 15,000 miles and it is still as sweet as ever. Depends how the bike had been rode previously.
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BlueNinja · Trackday Trickster Joined: 14 Dec 2004 Karma :

Also remember to use good oil! dont use fully synthetic 2 stroke racing oil which the scooter boys think is best.. its a waste of money and useless on a 50cc. Just get a fairly good quality type. Silkolene do very good oils.

Keith · World Chat Champion Joined: 24 Mar 2004 Karma :

TomC · Trackday Trickster Joined: 17 Dec 2004 Karma :

Thanks very much, really useful.
Also, what about price?
Ive been looking around at similar bikes but havent really found much.
Its a 2000 Derbi senda R with 15000 miles in good condition? Is £600 a reasonable price or is it overpriced?
Thanks.

Keith · World Chat Champion Joined: 24 Mar 2004 Karma :

jamie192 · Spanner Monkey Joined: 18 Oct 2004 Karma :

my ts is on 25 thousand miles and still going strong, tomorrow im treating it to a new gasket set, new cylinder an new piston. Happy christmas for it.
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binge · Emo Kiddy Joined: 03 Jul 2004 Karma :

If you do change the rings n that, REMEMBER to stuff rag around the piston when the barrel is off so no bits of piston ring fall into the bottom of the engine (if you accidently snap one)

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