2 stroke 125cc tzr rg nsr rs etc.... advice

[lozza59]

hi all
right im interested in getting a 125 2 stroke race rep style bike (on road), my previous bikes have all been 4 stroke i have had:
kymco agility 50
kymco ck 125
skyjet f5
jialing jh 125 33
kymco sector
gilera coguar
honda cbr 600 fl
and currently a superdream 125 (not roadworthy yet)
i had a ride on a aprilia rs and they are a lot of fun, but the 2 strokes always break down?
i have always liked the suzuki rg 125 but i think an nsr would be more reliable?
i will be using the superdream as the daily bike but some 2 stroke fun for the weekends would be good,
i would like some views and opinions/experiences people have had with their 2 stroke race style bikes
things like reliability
value for money (they are all expensive!!???)
running costs (not going to be 90mpg plus like a 4 stroke 125? plus the 2 stroke oil...)

i would be looking to get something along the lines of a running project.

[the95th]

they drink oil quite quickly, keep on top of it.

They can over heat a bit, and have difficulty starting a lot if the spark plugs are warn. MPG is usually about 75ish depending on if you rag it a lot.

They will eventually wear themselves out, but this is often because kids/people dont respect the fact they have a bike that goes twice as fast as it really should.
And when they do a rebuild, they dont bed the engine in properly.... ive seen kids spend 600 quid on an rs125 rebuild and to " see if it goes any faster" afterwards which just kills the poor things.

The rebuilding isnt too taxing, its all logic. But you just have to buy the best and not skimp on the little things. Remember they go faster then the 4 stroke alternatives but thats only because they are high maitainance. Just because you can jump on your cb and it will go, even if the oil's a little low. On a rs. it will die.

hope that helps. rs125's only get a bad reputation because its the riders who kill them

Greg
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2004 Rieju Rs2 Matrix 50cc, 1982 Honda CG125, 1986 Honda Cm125, 1982 Honda Cb125..... I kill a lot of 125's

[phonesurgeon]

second that...

I have an Aprilia Pegaso 125cc, 2T with same engine as RS 125...
I killed it last year, not by poor maintanance, but cause i didn't realised the 2T oil feeder broke off from the reservoir...

I ve made the top end rebuild and while ther i ve stripped the whole bike for a "face lift"

When it will be back on road it will be taken care of... after the intial engine bedding in!

[RichieZX6R]

2T bikes are fantasic, if you keep on top of them!
I had an NSR a while back, it was a lovely little bike. Wish i never parted with it. A bottle of 2T oil a month ish and it did have a oil light but i checked it on every fuel stop any way as the lights cant be trusted really.

Thanks
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Current: Kawazaki ZX6R 51
Past: Kawazaki ZX6R 96 - Honda CBR 600F4 05 - Dragstar 125 02 - Honda CB 400 SF 94 - Honda NSR 125 51 - Gilera Runner XV125 04

[Kickstart]

[Livefast123]

I've just put my 94 NSR back on the road after 6 years stored in my garage, the only thing I had to do was change the petrol, clean the carb, change the battery and it started up straight away.

After the intitial ride I had a few issues such as being down on power etc. I did a full top end rebuild on it, replaced the thermostat and corrected the powervalve cables that the previous numpty had put on back to front at the servo end. After running in the bike now flies and it's just so light that you can throw it around. I run it on Motul 710 and haven't used a tankfull yet so it isn't too bad on the 2 stroke.

2 strokes are only unreliable if they are abused, which unfortunatly they are quite often. I would sacrifice a tiny bit of speed and get an NSR over a RS as they are more reliable and easier to get parts for. Whatever one you buy you may as well budget for a top end rebuild as most owners bu**sh*t about this so it prbably never happened. Also they should be run on high quality 2 stroke oil not your local Tesco value stuff.

2 smokes rock and you'll be keeping alive the dream for future generations!

https://img857.imageshack.us/img857/9922/dscf6019.jpg
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Current ride - Yamaha MT-07

[lozza59]

thanks for the replys everyone,
im liking the pic of the nsr ive seen an rg 125 on ebay and ive always liked the rg 125 fun
though im keen to stay with honda and have got my eye on a nsr alcast model, cant really afford 1000 plus for a newer nsr .....
ive heard that mixing the 2 stroke oil (going from one brand to another,) can cause sludge that blocks the 2 stroke oil pipe further causing the engine to sieze, anyone had a problem with this? i think i would be better off using pre mix?
anyone owned the older nsr alcast? any issues?
the rs is a great looking bike i hear they are going to a 4 stroke soon called the rs4 had a quick look on google,
thats going to cost some dough!
feel like ive missed out never owning a 2 stroke everyone says they are great! while they work... always stayed away as i often commute fron norfolk to lincolnshire, my old cg had hard times keeping 55mph but it didnt let me down, put 11,000 miles on it and sold it for little more than was payed for it would be nice to have something that can stick at 60 and if wanted i can hit the throttle and get a noticeable reaction! if i get the nsr will post a pic!

[Kickstart]

[hornetmike]

I've been working on my mate 125 tzr and now i fancy something 2 smoke
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87 Honda CG 125 - 97 ER5 - SR 50 -81 Z250- 96 CBR 600 F- 94 GPX600R 88- GPX 400R- 87 GS 125 - 2006 Honda CB600F- 2003 ER5 - Honda CBF 1000 2009 - Honda CBR 600 RR 2011
Current BMW R1200GS 2010

[c clarke]

if you want a 2 stroke, you want a gilera sc, in my opinion, yamaha dt engine, one of the most reliable 2 strokes, very fast, sexy looking 125. just the parts arn't cheap and the fairings are expensive if you come to replace them
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cclarke

[2-stroke madness]

ive had a derbi senda 50, and that was a quality 2stroke, had a few problms now and again, but it was a sweet bike, then had a suzuki gx 125, was faster than the send 50, and amazing on ful as its a 4 stoke, reliabilty was superior aswell, always started no matter how cold it was but then i got an rs 125, and i havent rode anything like it in my life, keep up the maintenance and your good ill never get anything other than a 2 stroke
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live life to the max.... Buy a 2-stroke

[skatefreak]

Yep,
NSR owner here, they are fantastic, dont think i could go back to a 4 stroke (although i just need to get A2 out the way then i may consider a 600 4-T :p).

They really arn't that much more hassle than a 4 stroke (if you look after your 4 stroke well). I met a chap accross my road from my parents house, I've seen his NSR and it looks practically mint! Says he's had it from new and never had rings/piston etc done. Just fuel/oil in and away he goes. He's done 25k on it and it doesnt hang around!
Reliability isnt the mythical issue its made out to be!

Just a thought, hypothetically a de-restricted NSR can sit at 90mph if you have headphones loud enough to drown out the 10,000+ rpm of the engine :p. 70-75 would be plenty comfortable though

-Jvr

[anthony_r6]

NSR125 here also. Had it since the end of January. Done 35,000 miles total since it's been on the road. Since I've had it, I've not had to do much on it mechanically. It has broken down once, but this was due to a faulty spark plug I put in, and was resolved quickly. I do have a problem with neutral, but this was my own doing, and I've not been able to get into the crank casing to fix it.

They're great bikes, but will give you a numb ass if you ride it for long periods of time. Mine's restricted and will do an indicated 80, so it's working on the motorway - even if it does vibrate a lot! I've still got to replace a few internal parts, but I'm reluctant to do anything while it's still running.

The guy I bought it off did 17,000 miles on it. I've clocked up another 5,000+ since Feb, and it's still running strong. As much as I love this bike, I'll be selling it come Feb so I can get something bigger. One other problem is that scum keep trying to knick it!
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Ted : "Maybe he's agoraphobic."
Dougal : "Jack scared of fighting? I don't think so, Ted."