▲ 0 r/Wiring

new tail light

connector of the old tail light are on the left, new ones om the right. how do i connect it?
the connecter thing the old one went in is also visable on the left of the picture

u/afoe-3TAP — 1 month ago
▲ 2 r/Trackdays+1 crossposts

sprocket sizing rc390

my 2015 rc390 has a top speed of 175km/h and it cuts out at that speed, but it feels like i have so much more to give.
it has a power commander, full exhaust and a tune, it gets up to that speed pretty rapid.
i was wondering if there is any way to increase the top speed, i thought about either removing or changing the electronic limiter (rpm)
or changing the sprocket sizes.
all advice is welcome im just doing research nothing serious

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u/afoe-3TAP — 2 months ago

4 week difference

4 weeks since the start of the cut, small visable changes in the back already, could be the angle though.

u/afoe-3TAP — 2 months ago

zadeltassen support

had extra support nodig om verdere trips met meer tassen te rijden, even langs de bouwmarkt gegaan en wat in elkaar geflanst, erg stevig en ziet er helemaal niet zo verkeerd uit (hangen natuurlijk tassen overheen wanneer dit erop zit)

u/afoe-3TAP — 2 months ago

Front brake problem ktm rc390

when i pull in the front brake on my ktm rc390 (2015, 25k km)
it sometimes doesn’t fully grab and only works partially. when i tried to pull it VERY slowly (took me 6 seconds) it didnt even grab at ALL and i have to disengage and re engage it to make it work again.
my question is:
does anyone have experience with this?
leaking seal maybe? or bubbles in the system?
all advice would be appreciated. thank you

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u/afoe-3TAP — 2 months ago

Tire pressure wasn’t my main worry…

both the main and the spare tires blew on the trip to france. my ass was worrying about the correct tire pressure for the trailer whilst the tires were 24 years old (0402)
couldnt check that date because it was on the inside and id have to crawl under to see. tread was perfect, they didn’t even have micro tears anywhere and still blew.
had to abandon the trailer and ride my very uncomfortable ktm rc390 850 fucking kilometres back to the Netherlands.
did it in about 12-12.5 hours.

u/afoe-3TAP — 2 months ago

tire pressure advice (TRAILER!)

going to take my bike on my trailer with me on vacation, i want to drive as efficiently as possible, what tire pressure do you guys put in your bike trailers?
1100km trip to south france, bike weighs 150kg, tires are 165-185’s not sure which size exactly. the trailer is small and doesn’t weigh alot on itself.
ps: i know this isn’t a typical trackday question but i know most people take their bikes on their trailer so i thought this was the place to be.)

u/afoe-3TAP — 3 months ago
▲ 3 r/MechanicAdvice+1 crossposts

Oil starvation cause?

(2015 ktm rc390, 372cc 1-cyl)

So we found out the cause for the sudden clutch disengage problem. The hole (see on picture) that that guides oil to the bearing (that is inside of this part) that makes the inner and outer clutch basket spin separately, didn’t have oil.
the sudden oil starvation inside this part (idk what its called i forgot the name) caused the bearing that sits inside to melt and fuck up the inside which caused both of the clutch parts to dig into each other.
both the inner and outer clutch baskets got saved and didn’t need a replacement, only the part in this picture.
the cause is still unknown, the oil was not that old (08-25 and sat still for most of the year).
is this something i NEED to look into or is this something that can just happen? i don’t want to risk an oil starved engine but have no idea how to look into this. oil didn’t have ANY metal shavings or glitter into it, looked really healthy. bike has 25k km and well maintained by experienced previous owner.
bike has new oil and everything now.
any advice or possible causes?
everything’s appreciated!

u/afoe-3TAP — 3 months ago

how to saddlebag

( 2015 ktm rc390 )
my ktm has a race seat from fiberglass. i am planning a trip with my gf so shell be on the back which leaves me 2 options in terms of storage: on her back in a backpack
or on the side of the bike.
i already own 2 very large saddlebags that are made to hang on the side, however i don’t know if that’ll be possible on this bike without them destroying the turn signals.
any advice?

PS: Comfort or ergonomics aren’t important. the trip is only 2h of driving since we’re going to take the bike with us on a trailer to south france and go from there.

u/afoe-3TAP — 3 months ago

bodyfat percentage estimation

(1.75m, 67kg)
i need some help estimating my bodyfat percentage, my guess is somewhere between 19-21% and im seeking advice on whether to bulk up (trying to get to 73-74kg) or to cut down a bit of fat. i store the most fat around my waist. What would y’all advice?
(Edit: pictures were made post workout, keep that in mind)

u/afoe-3TAP — 3 months ago

are these clutch plates fine?

(2015 ktm rc390) the clutch does not disengage anymore so i took it apart, i was thinking the plates sticked together because of the bikes winter sleep and me riding the bike pretty hard after just 1 slow ride, what do you think the state is of the plates, and what could maybe cause the sudden failure of disengaging?

u/afoe-3TAP — 3 months ago
▲ 2 r/KTM

clutch problem ktm rc390

2015 KTM RC390
I was stopped at a traffic light with the clutch pulled in and the bike in first gear. I revved it to around 5,000 RPM (still with the clutch pulled in), and suddenly the bike lurched forward and stalled.
After that, I tried to push the bike with the clutch pulled in, but it wouldn’t roll, so it seems like something in the clutch has failed.
The strange thing is that there were no warning signs beforehand. The clutch wasn’t gradually getting worse at disengaging, and it wasn’t slipping. The clutch cable is still intact, and the clutch lever still has normal resistance.
The bike will still run and shift gears if I start it in neutral, get it moving, and then put it into gear.
Has anyone experienced something similar or knows what the first thing I should check is?
I did some searching myself and came across the clutch slave cylinder, but I’m not sure if that could be the cause.

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u/afoe-3TAP — 3 months ago

Clutch problem ktm rc390

2015 KTM RC390
I was stopped at a traffic light with the clutch pulled in and the bike in first gear. I revved it to around 5,000 RPM (still with the clutch pulled in), and suddenly the bike lurched forward and stalled.
After that, I tried to push the bike with the clutch pulled in, but it wouldn’t roll, so it seems like something in the clutch has failed.
The strange thing is that there were no warning signs beforehand. The clutch wasn’t gradually getting worse at disengaging, and it wasn’t slipping. The clutch cable is still intact, and the clutch lever still has normal resistance.
The bike will still run and shift gears if I start it in neutral, get it moving, and then put it into gear.
Has anyone experienced something similar or knows what the first thing I should check is?
I did some searching myself and came across the clutch slave cylinder, but I’m not sure if that could be the cause.

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u/afoe-3TAP — 3 months ago

Koppelingsprobleem Ktm rc390

( 2015 ktm rc390 )
ik stond stil voor het stoplicht met mn koppeling in en de motor in zijn 1. ik revde hem tot zon 5000 toeren (ook met de koppeling in) en hij schoot ineens vooruit en sloeg af. vervolgens wilde ik hem wegrollen met de koppeling in en lukte dat niet.
Eindstand is dus iets rondom de koppeling kapot.
Het is niet zo dat hij langzaam steeds meer moeite had met loskoppelen, of dat hij slipte. Ook is de koppelingskabel en de koppelingshevel ook, en heeft de koppelingsgreep nog weerstand. De motor rijd en schakelt wel wanneer je hem in zn vrij start, aanrent en hem dan in zn versnelling zet.
iemand die ervaring heeft met zulke problemen en weet dat de eerste stap om te checken is?

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u/afoe-3TAP — 3 months ago

remprobleem ktm rc390

gebeurt af en toe, dat ik de rem volledig kan indrukken (wel met enige vorm van weerstand, niet weerstandloos maar wel met veel minder) en dat hij dan ook niet volledig remt. Normaal stopt hij al bij de halve hendel of 60% ervan bij het indrukken. op zulke momenten kan ik hem tot 80/90% indrukken. Ik dacht zelf aan lucht in het systeem. 1e stap de remvloeistof verversen?

u/afoe-3TAP — 4 months ago

vraag over sterkte glasvezel

zou ik op deze glasvezel race kont raceschuim kunnen plakken, en houd het glasvezel dat vol? zou namelijk graag een passagier mee willen nemen zonder mn hele tail gedeelte te vervangen naar origineel

u/afoe-3TAP — 4 months ago