Re: KTM 200 Duke

Thanks for the advice guys, turns out, my "pass" switch was a bit stuck open, hence the headlight was continuously on! everything is back to normal now

Thanks

Re: KTM 200 Duke

^th gear as D200 does. The torque at rear wheel of D390 in each gear is 25 to 27% more than D200. I cannot understand why D390 has to be shifted down to 1^st gear to cross a speed breaker which D200 crosses in 3^rd gear. Why is it so?

Re: KTM 200 Duke

Gearing my friend, duke 200 is very shortgeared, whereas 390 is very long.U have to clutch ride in 1st for speed breakers.

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Re: KTM 200 Duke

If you don’t mind, kindly explain it quoting the gear ratios of both bikes.

Re: KTM 200 Duke

Unable to find gear ratios for 390.but try a ride back to back on 200 and 390.Im sure u'll understand what im trying to say.

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Re: KTM 200 Duke

We are not comparing two bikes having the same torque but different gear ratios to consider which one is short or tall geared.
Duke 200’s torque at rear wheel in 1^st gear is 19.2 x primary gear ratio 3.272 x 1^st gear ratio 2.833 x final drive ratio 3.071 = 547 Nm while Duke 390’s is 747 Nm. In 6^th gear it is 177 Nm for D200 and 235 Nm for D390. The maximum torque of D 200 is at 8000 RPM and D 390 is at 7000 RPM.
Anyhow, I’ll surely try a test ride as you said.

Re: KTM 200 Duke

It might be redundant.. but can someone tell me, whats the max BHP/ Top speed one can go on duke 200 with available modifications (no reboring., air filter)?

With Kirus/Race concept ECU, I think its 3BHP bump taking rev limiter to 11.7K/12K and top speed to 150..
Any other upgrade for top speed (except sprocket change as that will compromise the low end).

Re: KTM 200 Duke

Fit an ultra large rear sprocket or a small front sprocket and you'll have a Duke 390 behaving like the Duke 200.

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Re: KTM 200 Duke

One word."bulls**t".logic applied here is pretty screwed up.just drive n let us know how u feel.

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Re: KTM 200 Duke

I prefer to ignore such stupid questions but since you have an explanation that is all the more stupid, answer this. Going by your therory the superbikes say a ducati 1199 which is around 200 kilos and around 195 horses at the crank should be able to pull from a standstill even in 6th gear. Or even in 10th gear if it had one.
Is that the case?

The reasoning might be sounding silly to you but a question as lame as yours, deserves nothing better.
If you still want to enlighten us further let me know.

Sent from my GT-I9100

Re: KTM 200 Duke

But smaller front or larger rear sprocket makes the gear more short resulting more acceleration and less top speed.
Suppose we reverse the sprockets of D390 as you said. The speed at 9000 RPM in 6^th gear becomes 1450 kmh but the torque reduces to 26 Nm.
Duke 390 has more speed and acceleration than all the bikes we usually see on our roads except Ninja 650 and Hyosung 650.
We may be able to limit Duke 390’s speed to Duke 200’s but the torque cannot be reduced. If we try to reduce the torque by gearing, the speed increases and vice versa.
Actually we cannot make a D390 behave like D200 until the engine and gear box is replaced. Then D390 does not behave like D200 but becomes a D200.
Who am I to enlighten an infallible expert like you? Anyway, thanks for the kindness you shown to not ignore my stupid question. But kindly note your Excellency that I never mentioned the bhp except to mention the power to weight ratio. The bike you mentioned has 580 Nm torque at rear sprocket at 9000 RPM in 6^th gear. I don’t know whether it can be pulled from standstill in 6^th or 10^th gear or not as I have never used it as you do. But D200’s torque in 1^st gear at 7000 RPM is 547 Nm and P200NS’s is 440 Nm.

Re: KTM 200 Duke

If we calculate pulling power that way. A Superbike will never need a gearshift as each Bhp is Pulling less than a Kilo of weight. A ICE needs to rev to a specific RPM to generate certain amount of power and U need to be in a specific rev range to generate enough power to propel ahead.If you try to ride a 390, You need to be atleast in 2nd gear to Pull from a bad speedbreaker. You can try it on 3rd gear too but then you will have to toast the clutch to bring the engine speed high enough to generate enough torque to pull ahead.Hope you got the idea bro.Just my 2 rupiya

Re: KTM 200 Duke

Please read from my first post here. My doubt was not about it. Somebody said Duke 200 pulls from 30 kmh in 6^th gear where D390 has to be shifted down to 3^rd or lower gear to accelerate from that speed. Further he said that D390 cannot cross a speed breaker in 3^rd gear which D200 does easily.
As per my stupid calculations, D390 has more torque at rear wheel in every gear and in every RPM. More than that, the maximum torque produced by D390 is at a lower RPM than D200 which surely favors city rides.
The answer to my “stupid doubt” was mentioning a 195 bhp 200 kgs bike which I have never ridden or even seen. He thinks that all these 195 horses are tied to that bike to pull it from stand still; not the torque which twists the rear wheel is making it move. Pathetic.
I too agree with what you said about clutch disengaging and increasing the RPM for sufficient torque.

Re: KTM 200 Duke

And I open this thread to look up for new upgrades, riding experiences and people sharing thr thoughts about the KTM DUKE200 !

I still get entertained with the never ending fight/discussion about the parts & forces that I've never seen of a Duke 200 or the Duke 390 for that matter.

Let alone the fact that thr are people who have sleepless nights in anticipation of receiving an update/news from thr respective showrooms where they have booked thr bike and have sold thr souls to the devil 390. Please take this discussion of the Duke 390 to the respective thread of the Duke 390, I hope it will refresh those eagerly waiting hearts & would give some food for thought to thr already deep fried brains...

or you can opt for a General Biking Discussion thread and discuss mental maths thr, without scaring less learned guys like me, who just try to enjoy what they ride and share the valuable moments without thinking about the figures and details of what is not usable on a daily basis.

It feels like college where I studied integration and differentiation, but still figuring out where to use it...

All in good spirits, I appreciate your knowledge and the heart to share it here, but I feel you guys have more valuable information and experiences which can benefit me as a biker and a proud owner of the Duke 200 !!!

Cheers to life !!!

Re: KTM 200 Duke

Mr., the 390 while doing a 30 in third gear doing may be doing around 1500-2000rpm and like it has been pointed out that an internal combustion engine does not generate equal torque at all rpm. So at this given rpm even if its producing more torque, owing to the higher gearing, the 390's engine stutters, shudders and what not if you try to pull it in a higher gear doing low speeds.
Another thing, at the same speed in 3rd gear the 200's engine is doing more revs per min because of the shorter gearing so it might be producing more torque than what the 390 is doing at 30kmph.

I would give you a friendly advice. Kindly don't involve calculations which are based on nothing. You have all the data posted without even knowing the primary or secondary gear ratios of any of the bikes. I believe you believe in arguing more than talking sense. Now please don't stretch the topic more.

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