Honda cg 125 m 2001 - 5th gear issues

[LukeK96]

Hi there, new to the forum,
well i'm not sure if it's an issue, or just something that is common, basically: My honda cg has a decent acceleration, however I feel there's an issue with the gears, - 3rd hits it upto 50mph, 4th about 62mph, however 5th gear just doesn't do anything, it's like 4th is the cap, i've been told it should get upto 67-70mph (Newer models use a higher powered engine, well as ''higher power'' as going from 9hp to 12hp can be) - however there's just nothing there, bike just does the same speed, just a little quieter, is this normal?

Please excuse my wording and if this is a poor question, however this is my 1st geared bike and i'm on L-plates, so don't hate me

Thanks in advance for any help.

[Scootaloo]

[mudcow007]

my CG would bog down like mad in 5th, so would just use 4th.

Mine hit 60 once, but it didnt like it at all...this was with me sitting as far back on the seat as possible with my chin on the filler cap

if you wanna go faster, i suggest you make something like this to go over the bike

https://i25.photobucket.com/albums/c81/mudcow007/aero_zps2894cfec.jpg

[Rogerborg]

Sounds normal, my Chinese CG copy-engine would do the same top speed in 4th or 5th. Think of 5th as an economy gear, not a higher speed one.

If you want to go faster, you'll need to add more power, rather than more gearing.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[spriddler]

My 2014 CBF 125 (3,700 miles on the clock) will hit an indicated 73 (actually 66 when verified by GPS) on the flat with no wind. I'm 146lbs in me socks.
But at 65 indicated it's revving it's nuts off at 8,300 rpm. and petrol consumption drops to 65'ish mpg.
Info gathered on a 5 days' 1400 mile ride from Calais to Spain via the Pyrenees in June this year.
My main gripe is that it's virtually impossible to select Neutral when stationary at lights etc.
And with that daft kicked rear end throw-over panniers are an ugly fit - and there's nowhere to attach bungee hooks or a cargo net either.
O.K. for town or commuting but definitely not a touring bike (obviously).

[Mark65]

Ive managed 65 on the speedo on my CG on the flat with no wind, that was fast enough .
____________________
07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[LukeK96]

Thanks for your responses, Glad to know this is something to be expected and not a fault, i'm 6ft and about 170lb, so the fact i'm even getting over 60mph isn't too bad I suppose, a very mechanic minded mate has said he would cut the emmissions on it to give it a few more mph, not sure it's worth the effect it would have on the engine though.

[spriddler]

[chris-red]

Try crouching as low as you can and redlining it in 4th before changing. You might go a bit faster.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[LukeK96]

[Mark65]

The cg runs very lean as is, thats why your plug is a grey colour when removed, I wouldnt try to lean it out more it may burn through your piston.

Mark
____________________
07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[LukeK96]

Asked him about it today, turns out it has already been done...To be honest i'm not overly bothered about top speed, i live in a city and commute within the city so I don't have any need for higher speeds really, unless i'm going out of the city, i'll keep this as is and in a year when i can do the a2 i'll just get a bigger bike, love this bike, don't want to ruin it.

[LukeK96]

Instead of setting up a new thread I thought i'd just ask here, there seems to be an issue with the bike slipping into neutral from 2nd, seems to be getting more common, any advice?

[chris-red]

When did you last change your oil and is the chain adjusted correctly? If the answer is Recently and yes and your technique isn't at fault it is likely a new engine/split the cases job.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[LukeK96]

oil was a little low, topped up today, chain tension is set, i'll see if it happens again, thanks for your advice.

[chris-red]

The amount isn't the issue, it is the quality of it. If the oil is old it can make the changes worse. Being a small bike you need to change to oil regularly.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[alt tab]

Just the case with 5th gear on the CG, absolutely redline it in 4th and you'll see marginal speed gains in 5th, but nothing over a few mph. Really is just a cruising gear.

[LukeK96]