Is your bike touchy in 1st gear?

[Feasty]

If I ride along at a slow speed in 1st with about half rev's, my bike is very jerky pulling forwards then pulling back, pulling forwards then pulling back etc. Even though I'm holding the accelerator steady and trying to ride smoothly.
In higher gears I can keep the bike going at a constant speed without this happening but if I alter the speed just a little, faster or slower then the bike jumps forwards or pulls sharply back again... bit like a wild stallion!!

Is there anything I can do about this to make the accelerator smoother and less jumpy?


____________________
Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed).

[Acemastr]

I had this, turned out to be a chain with a tight spot, replaced the chain and it's smooth now, any movement on the throttle sin't particularly smooth but that's just crappy fuelling.
____________________
2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[JAMSXR]

Only use 1st to pull off?
____________________
Honda SFX50 > Aprilia SR125 > Aprilia RS125 > Honda RFV400 > K4 GSXR600 > KTM Duke > C1H 636 > K3 GSXR1000 > Aprilia RSV-R > Triumph Street Triple R > Ducati 899 Panigale > Aprilia Tuono 1100 > Triumph Daytona 675R > KTM SuperDuke 1290 2.0

[Feasty]

[Alexio]

Only very, very occasionally do I stay in 1st when in 3MPH traffic that really is moving at a constant rate that slowly. Know what you mean though, had that a bit with my chinese 125 in 3rd gear occasionally (Do not buy chinese bikes - just say no)
____________________
will never give up his CG. I look at my fuel gauge more as a progress bar than a fuel gauge.
G: With my GSXR I do often effectively use it as a scooter with a clutch in town.
ms51ves3: why does it need 500 miles? Are you teaching it how to be a piston?

[Skudd]

Can be the chain, carbs/fuel injectors, but also can be your clutch control.
____________________
Famous last words of Humpty Dumpty. " Stop pushing me "
Petty Anarchists look at "1984".............. The Visionary looks at "Animal Farm".

[Alexio]

[Feasty]

[Skudd]

[JAMSXR]

[Feasty]

Thing is I know ways round it, partial clutch, different gears etc, etc. I was just wondering if all/other bikes did this or wether it's specific to my bike and also perhaps if it being a single cylinder thumper would make any difference? i.e. low down power...

I can cope with it easily enough but am just a bit concerned it might be trying to tell me that something's wrong. Like Acemastr said about a tight spot in the chain or Alexio about the clutch linkage etc.


____________________
Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed).

[wizzzard]

[JAMSXR]

I would say it's the bike, my KTM Duke was very similar to how you describe in first, a bit like a bucking bronco!


____________________
Honda SFX50 > Aprilia SR125 > Aprilia RS125 > Honda RFV400 > K4 GSXR600 > KTM Duke > C1H 636 > K3 GSXR1000 > Aprilia RSV-R > Triumph Street Triple R > Ducati 899 Panigale > Aprilia Tuono 1100 > Triumph Daytona 675R > KTM SuperDuke 1290 2.0

[Alexio]

If it helps, just before I replaced my last chain on my CG (had an epic amount of miles on it) it was stretched in a ton of places and ready to fall off (once or twice it actually skipped off of the back sprocket, much like on a mountain bike).

However, it didn't do what you are describing in first gear. Maybe it was a better chain though
____________________
will never give up his CG. I look at my fuel gauge more as a progress bar than a fuel gauge.
G: With my GSXR I do often effectively use it as a scooter with a clutch in town.
ms51ves3: why does it need 500 miles? Are you teaching it how to be a piston?

[Whosthedaddy]

Its one of the TRX's little gems in my eyes. 1st gear is quite long, not snatchy like you've mentioned and even when tapped down into during slow moving traffic it remains smooth and confidence inspiring. I feel confident in taking it through the revs and not worried that the front will lift unlike when on an IL4.

Ive managed to knock it into 1st and go round roundabouts thinking I'm in 2nd and not patted an eyelid. Damn you 5 speed box, still not learnt to count.
____________________
Current : MSX 125 Past : CBR 900RR Monkeybike : c50 LAC : ZXR750 H2 : FZR600 : ZX7R P3 : YW100 : TRX850: Trophy 900 T309 : GSXR 600 L0: Monkeybike : XJ6S Whosthedaddy

[ms51ves3]

At 5,000rpm there is a flat spot on my bike where the engine starts 4 stroking, it's impossible to ride in 1st gear past it.

I've not got around to fixing it yet but it's likely to be the powervalves not being synchronised and one is moving slightly before the other.

[Blau Zedong]

It's a big single trait, you could possibly tone it down by fannying around with the gearing but you'll never stop it.
____________________
18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[Alexio]

[Whosthedaddy]

Even the little single on the monkey is really snatchy in 1st.
____________________
Current : MSX 125 Past : CBR 900RR Monkeybike : c50 LAC : ZXR750 H2 : FZR600 : ZX7R P3 : YW100 : TRX850: Trophy 900 T309 : GSXR 600 L0: Monkeybike : XJ6S Whosthedaddy

[rac3r]

Yep my Monster is the same until you get past 3k revs
____________________
Bikes : 2006 CBR125R - 2004 Monster 620ie - 2004 ZX-6R B1H - 2005 Monster S2R 800 - 2011 Street Triple - 2009 Streetfighter 1098 - 2014 ZX-6R 636

[Bikeless]

sounds like it is hunting which you get with a lean mixture, maybe a blockage in a fuel filter or carburettor.

[Feasty]

Well thanks guys, it does make sense to be related to having a single 4 stroke. I'm not sure I'd love it quite as much if I'd ridden a smoother bike first though, but with this being my first bike I really like the extra grunt I get at low rev's.

fireblade2102, if it's 'hunting' as you mention would it be more likely to do this at other times too, i.e. idling?


____________________
Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed).