In line 4 compared to V twins ??

Scutter · Two Stroke Sniffer Joined: 30 Oct 2012 Karma :

So I was after opinions regarding the engine characteristics of the in-line 4's compared to V-twins...

The reason being, is that I now have this V Strom 650 and it's the first v twin that I've owned. (Incidentally it's also the first fuel injected bike I've owned.) Anyway, although I love the bike I find that it's much more 'snatchy' than the 4's I've had previously. The throttle seems much more ' on or off' than bikes I've ridden before, and even the 600r that I also still own.

Im aware that I've been away from bikes for some time, so it could well be me, but as I said I don't get it on the 600r. I also wondered if it was something to do with it being FI compared to carbs?

Any ideas?

Thanks.
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Current bike: FJR1300
Previous: SS50, GS50, TS50, GP125, NS125, GSX250, GPZ305, GPz550 81 twin shock, GPZ550 UniTrack, GSX550es, 2x GPZ600r, GPZ1000rx, v Strom 650 GT

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

I'd be willing to bet it's down to the FI.

More sophisticated FI systems are pretty smooth, but some of those that are less so are a bit 'snatchy'.
Always found my 675 felt like it needed a delicate touch, while the GSXR1000 could be rolled on smoothly despite having a lot more power.

Same engine in an SV650 is fine.

Scutter · Two Stroke Sniffer Joined: 30 Oct 2012 Karma :

That makes sense, as the engine feels very smooth through the rev range, and as long as I'm overly delicate with the throttle it's fine. I was a bit concerned for when I'm going to be carrying a pillion - ill just have to be a bit more careful! Thanks Thumbs Up

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Current bike: FJR1300
Previous: SS50, GS50, TS50, GP125, NS125, GSX250, GPZ305, GPz550 81 twin shock, GPZ550 UniTrack, GSX550es, 2x GPZ600r, GPZ1000rx, v Strom 650 GT

yen_powell · World Chat Champion Joined: 22 Jun 2008 Karma :

I've had quite a few V twins and quite a few 4 cylinder bikes and the only snatchy vehicles at low speeds I have owned have both been FI.

I blame the poxy EU making manufacturers do strange things to the fuel mapping to meet over zealous emission tests at certain revs.
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c-m · World Chat Champion Joined: 12 May 2006 Karma :

I've got a v-twin and the only bike i've ridden with a snatchy throttle is the 2007 VFR, it's absolutely awful
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_Troy_ · World Chat Champion Joined: 11 Feb 2011 Karma :

I'd disagree with the above. I have a curvy SV, and completely agree about the snatchy throttle. I've put it down to the vast engine braking making it feel much more on or off. I can't wait to get back on a 4 because of it.
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colin1 · Captain Safety Joined: 17 Feb 2005 Karma :

I think twins are nice, as they have the useable grunt of an engine of that cc, but because they don't rev that high, you don't have the exciting (but a bit too tempting) top end rush.

IL4 for fun rides on twisty roads at the weekend, twin for leisurely riding without being tempted to ride aggresively.

I think the snatchy fueling at low revs on a lot of bikes, is due to lean fueling to get the bike through emmisions testing.

Typically, the revs you need to do 55mph in top gear, is the revs with the flat spot.
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Fowlersrs · World Chat Champion Joined: 30 Mar 2012 Karma :

stonesie · World Chat Champion Joined: 04 Jul 2010 Karma :

I'm the other way round, the SV was a snatchy thing but I got used to it in time, the Triumph is lovely and smooth, or it was until I fitted a 1050 throttle tube Twisted Evil

and still nowhere near as harsh as the SV was.

Granted, it is a later and improved injection system than they used on the Speed Four.

Nick_Giles · Could Be A Chat Bot Joined: 01 Jan 2012 Karma :

.
My Hornet (carb version) was 'snatchy' at lower revs.

Balanced the carbs ( only one was out of sync ) and that cured it. Thumbs Up

Nick
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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Also -

for the 'vast engine braking' - less than a sports 600, I'd say. It's just that the SV is geared lower, so you notice it more.
Had more problems with the R6s locking up or trying to than the SVs when on track.

Never found a curvy SV particular snatchy and I've had five or something as well as having ridden others. They do get lumpy at low revs in a higher gear, but not really the same thing.

Scutter · Two Stroke Sniffer Joined: 30 Oct 2012 Karma :

The bike is great, the engine very responsive and it revs right through to red line freely, so no issues with it generally. I just find that, for example, when slowing for a junction and then seeing its clear so not stopping and accelerating away it 'snatches' causing the bike to jerk. It seems from most opinions that it's due to less than sophisticated FI - and if that's the case - its fine, I'll adapt. Im still enjoying the bike though - so that's all good Laughing

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Current bike: FJR1300
Previous: SS50, GS50, TS50, GP125, NS125, GSX250, GPZ305, GPz550 81 twin shock, GPZ550 UniTrack, GSX550es, 2x GPZ600r, GPZ1000rx, v Strom 650 GT

Rogue_Shadow · World Chat Champion Joined: 10 May 2012 Karma :

The V-Twin on the SV Is a great little engine but the engine braking takes a lot of getting used to.
Getting off the throttle can kill the speed before you intend to, I'm teaching myself to downshift much later in my approach.
If I'm riding towards a junction at 40mph in 4th, a simple blip of the throttle and downshift to 3rd will instantly bring my speed to little more than 28mph. It really took me by surprise at first, but now I know to downshift later and keep the throttle on ... Well a work in progress Wink

I do find the throttle response snatchy, but only in low gears at low speeds. Smooth roll on & off ( Thanks Keith Code Laughing

)

I imagine other engine configurations like a IL4, would allow the engine to engine brake more progressively / freely.
Might find out one day, till then I'm more than happy with my SV Thumbs Up

Scutter · Two Stroke Sniffer Joined: 30 Oct 2012 Karma :

Yeah Rogue, the engine braking really takes me by surprise! I back the throttle off and it's like I've grabbed a handful of brake! Much, much different from the IL4's I've had in the past that seem to give loads of over run. I'm glad I asked this now Wink

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Current bike: FJR1300
Previous: SS50, GS50, TS50, GP125, NS125, GSX250, GPZ305, GPz550 81 twin shock, GPZ550 UniTrack, GSX550es, 2x GPZ600r, GPZ1000rx, v Strom 650 GT

kiddakidda · Spanner Monkey Joined: 09 Nov 2011 Karma :

I had the SFV650 Gladius up until June last year. It was pretty smooth and was not snatchy as I remember.

I do know that Suzuki modified the V Twin engine a little when the released the Gladius. I believe they tweaked the inlet system and the modified engine is in the current V Strom & Gladius.

Thumbs Up

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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Teflon-Mike · tl;dr Joined: 01 Jun 2010 Karma :