In answering this I would like to ask a question. Has it always made this "clinking" moise or did it just recently start. Most likely if it was something loose in the gear box you wouldn't be able to shift through the gears. Since you didn't say anything about that I'm assuming it does shift ok. First I would drain the gear oil (starting the bike up and warming the oil up before draining) and look for metal shavings in the oil. If it does not expel any metal with the oil, I would add oil back into the gear box, start it up and ride it long enough to warm it up and take note of the noise. Note the following: 1) estimate what rpm range the noise is occuring 2) note if the noise goes away at mid-full throttle 3) Does it shift into all gears 4) is it shifting smooth or does it shift notchy and try to hang up while shifting My 525 makes a little bit of a chatter when it has been lugged down and you roll the throttle on, this is normal for the 525. Not sure about the 105's though. If it persist's I would run it by your KTM dealer and have them check it out. Tell them you changed oil and if you found any metal shavings when changing it and also tell them the responses on the 4 questions above. This will give them some info on their diagnosis.
maybe your rpms gauge is broken.get it looked at by a professional
4000 rpms maybe more
Almost none whatsoever at low RPMs and maybe 5-10 h.p. at high RPMs.
maybe a vacuum leak
Your alternator maybe bad
16 - 20v AC per 1000 rpms. dont try to check it while you are riding. unless you are filming it.... D
about 12, 13,000 RPMS.
lower rpms use less gas higher rpms have more power
If you have an engine that idles at 6000 rpms, you need to have it checked - immediately. Around 750 rpms would be normal.
Under normal driving conditions almost none whatsoever. At high RPMs maybe 5 to 6 h.p.
Advertised Horsepower is--245 HP @ 3800 RPMs. Torque is-365 FT. LBS. @ 2800 RPMs. The Heavy Duty 454 has--240 HP @ 3800 RPMs. Torque is--370 FT. LBS. @ 2800 RPMs.
Most cars are anywhere between 750-800 rpms