Re: KTM RC 390 Ownership Experience

1. Going by your description it's not that battery is losing charge rapidly, but "battery is not getting charged by the Alternator/Regulator Rectifier(RR) unit when your bike is running state".

Quick way to check, strat with take a multi meter to battery, when bike is turned off meter should read 11-12V under no load.
Start the bike, revv it to 5000-6000rpm in Netural and meter should read 13.8-14.2V, means Alternator/RR unit is working fine. If the meter still stays at below 12-13, then you have found the culprit is Alternator/RR unit.

2. The maximum fix is not more Rs. 2000-3000, are you willing to let go of the bike for such small annoying issue?

Re: KTM RC 390 Ownership Experience

Guys i got a big problem with my bike. It appears as though the battery loses charge rapidly in a day or two and then the bike refuses to start. I have tried to get this issue fixed from two different service centers but the incompetent A-Holes (incompetence is a veritable scourge in our country!) can't fix it. I even got the started motor replaced upon their advice but no dice. Today i tried to start the bike in vain and looks like now the display has conked out. Both SVC had suggested that the bike will have difficulty starting due to high compression and fixing this is major work.

Now i am stuck with a non-working bike.

1. Does anyone know what the issue is and how to fix this?

2. The engine - when it starts - runs well and everything else is good on the bike. How do i sell this bike? Because i really don't have time to resolve these issues. If anyone here is interested i am willing to let go of it for a bargain price.

Re: KTM RC 390 Ownership Experience

it depends on how bad the scratch is and how good the sanding/polishing job was.
if the leak is reoccurring due to this damage, then you gotta replace the fork tube, no other go.

Re: KTM RC 390 Ownership Experience

i love this beast <3 https://myfiosgateway.win

Re: KTM RC 390 Ownership Experience

My bike's left fork is leaking ever since the 4500 km trip. There was a slight scratch on the metal pipe, probably from some rock hit, which was found and thought to be the leaky area. Then it was slightly sanded, seals changed and was working fine. Within 100 kms of riding, again the same issue is back. Very slight leak is there I noticed yesterday. Is it possible to invert the metal chrome pipe and fit it? Or do I have to change the pipe? Any other solution? The service guy was confident that it is a very common issue fixed by sanding.

Re: KTM RC 390 Ownership Experience

Posting here after quite sometime. Just an FYI post.

Late last month, as I was starting for the ISG2G yercaud from Chennai, my bike's display stopped working. The display was working all fine until the ride day. I carried on with the ride thinking it would come up or we could fix it once I join the lot, but in vain. All through the ride the display didn't work and I managed coming back without it.

At the service center, we diagnosed the display and they mentioned that the display might have lived its life as a new display connected to the wiring worked directly. Either that or there would be some issue with the wiring which led from the connector inside the right fairing to the display. A day or two passed and we planned on rectifying the issue but the bike would not crank up that day. Bike did throw a low battery warning a week before that when the display was working so thought the battery might have lost charge as the bike was sitting idle. Battery in question is a nil maintenance Exide battery. So charged it(it was completely drained), put it on the bike and still no display. So, in another two days again the battery drained, this time I suspected the battery and charged it again, took two days to charge completely but this time the display came up but the bike didn't crank and the battery showed 11.4v reading. So claimed warranty and got a new battery after a week and voila the display started working as usual. Note that, since the display was not working, I could not guess that the battery might be the issue, all other electricals were working fine.

Re: KTM RC 390 Ownership Experience

You might have probably installed it at the end of the exhaust stroke, which again would mean the piston is at TDC, albeit the valves slightly opened. It's easy. See, check the mark on the flywheel, bring it to the TDC, that's the TDC mark for the compression end of the stroke, where both valves will be closed, this is your sweet spot. Remove your cams first, then bring your TDC on the flywheel, then align the camshafts and install then try, it should start. Check your connectors, fuel feed, spark plug cap, everything once again. Also one easy thing to notice is whether it's in exhaust stroke or compression stroke is, in compression stroke, the lobes will be sideways and not inducing pressure on the valves, both intake and exhaust will be neutral meaning, the lobes will be on the side. If the lobes are slightly turned and you see them pressuring the valves, then you have the wrong timing.

Hope I am not confusing you.

Cheers!
VJ

Re: KTM RC 390 Ownership Experience

Hey once again
So tried to start the bike today

It was cranking but wasn't starting

It was getting fuel as I removed the throttle body a little bit and was able to see fuel dripping

It was getting a spark as I removed it and saw that also, even changed it

Tried to run it without the cover and all the cams and valve were opening and closing as they need to

Still can't understand why it's not starting

Tried several times
All in vain

Thinking of reinstalling the cams 180 degrees and trying it again tomorrow. Might be installed at TDC of the exhaust stroke rather than compression

Re: KTM RC 390 Ownership Experience

Yes, the camshaft position is right. If you model falls in the 2018 and pre 2018, stick with the first one. 0.08 to 0.12 and 0.13 to 0.17. An mm of loose spec isn't a concern. You shouldn't have any problem. As it heats up, the shims expand and give the right clearance. Don't go loose more than than that.

Cheers!
VJ

Re: KTM RC 390 Ownership Experience

hey again

my manual says the valve spec should be

Intake 0.08 - 0.12
exhaust 0.12 - 0.17

Installed the new cams and now checked my valve clearance, they are .001-.002 out of spec on the loose end. Do you recommend changing them or its okay to be a tad bit loose?
The 2018 service manual changed its clearance too

now it says
intake: 0.10 - 0.15
exhaust: 0.15 - 0.20

If i go from the new manual I'm in spec, If i go from the old manual im .001-.002 on the loose end

Re: KTM RC 390 Ownership Experience

Make sure, you install the camshafts with the markings given them flush with the head surface. Before that, the piston must be at TDC. The flywheel must be rotated counterclockwise and the markings on the flywheel match the casing, and you're good to go.

Cheers!
VJ

Re: KTM RC 390 Ownership Experience

So it doesn’t matter if I install the camshafts straightly at TDC in the exhaust stroke?


Cause when you open a head which hasn’t been open before the exhaust stroke TDC has it’s cams upside down

And rn I have no clue when it’s at the exhaust or compression TDM as the cams are out and the engine was bought TDC 3-4 times without the cam installed

Re: KTM RC 390 Ownership Experience

Bring the piston to TDC mark on the flywheel, and make sure the you align the camshafts on the markings provided by them you will have to align them like this - o - against the head surface and install your chain, you're good to go. The key here is to bring the flywheel marking the same as the casing marking so the piston is at TDC and rest is just aligning the camshafts and installing the timing chain.

Cheers!
VJ

Re: KTM RC 390 Ownership Experience

hello everyone,

I had a doubt

I was working on replacing my camshaft and i had my bike in TDC of the compression stroke as required. By mistake after i removed my cams my TDC alignment got messed up and so I cranked the engine 2-3 times to bring it back to TDC but now I don't know if its TDC of the exhaust stroke or compression as I had removed my cams before doing so.

Is there any way to find out or it doesn't matter and I can put align the cams back at any TDC mark be it exhaust or compression?

Re: KTM RC 390 Ownership Experience

Hey guys,
Just out of curiosity, has anyone tried ohlins KT303 on their bikes? Is there any huge difference compared to stock ones?
Thank you