JKBC
New Member
Did you weigh it stock with a full tank?
I'm curious what that may have been because manufacturers often exaggerate on the light side.
If whatever you used is accurate I'll think of mine as truthfully weighing what that was.
I'm curious what that may have been because manufacturers often exaggerate on the light side.
If whatever you used is accurate I'll think of mine as truthfully weighing what that was.
Muckabucka
Member
I'll need to weigh mine when I get it back together. I'll be excited if it's sub 300.
psych0hans
Member
The red box looks like some kind of a lap timer... He probably used the RC8 forks.
RC390 Fan
New Member
It's so light its sticking to the ceiling! Great looking bike. How did you weigh it? Two scales would be good for f/r bias.
psych0hans
Member
Can you post a small review on the RC8 forks? How well do they perform on the 390?
gbabyracing
Member
Box looks like an old style. AMB transponder?
Sent from my iPad using Tapatalk
Sent from my iPad using Tapatalk
1. Yes, that is a hard-wired transponder.
2. Yes, I used RC8 forks (small review to follow)
3. I weighed it with a large walk-on (drive-on) scale at a local storage/moving facility.
psych0hans
Member
Those are generally not too accurate, try with two bathroom scales one below each wheel.
RC8 Forks
I really didn't want to shell-out $1500 (+) for a pair of Cup forks from KTM So, I remember reading that the outer/upper tubes were the same diameter on both the bikes (and the same length ). Looking on ebay I found a nice pair from a 2012 RC8 R for only $400. So I thought I would take the chance and see if I could make them work on the 390.
I had to make some axle spacer/adapters, so I could use the stock 390 axle. Then for the brake, I used a 10mm off-set 320mm diameter brake rotor from a monster/916/748 mounted Backwards so it would line up in the center of the caliper.
Also had to slightly, machine off a millimeter or so from the front (now back) mounting surface face of the rotor carrier to get it all to line up correctly.
The other benefit was also being able to use a real Brembo caliper on the one side (awesome braking now !).
Of course being that the forks came off a heavier machine, I re-sprung them with lighter springs. It all works great and now with full damping adjustability, I have a wide range to dial them in !
(Oh yeah, the front fender is also from a RC8)
I really didn't want to shell-out $1500 (+) for a pair of Cup forks from KTM So, I remember reading that the outer/upper tubes were the same diameter on both the bikes (and the same length ). Looking on ebay I found a nice pair from a 2012 RC8 R for only $400. So I thought I would take the chance and see if I could make them work on the 390.
I had to make some axle spacer/adapters, so I could use the stock 390 axle. Then for the brake, I used a 10mm off-set 320mm diameter brake rotor from a monster/916/748 mounted Backwards so it would line up in the center of the caliper.
Also had to slightly, machine off a millimeter or so from the front (now back) mounting surface face of the rotor carrier to get it all to line up correctly.
The other benefit was also being able to use a real Brembo caliper on the one side (awesome braking now !).
Of course being that the forks came off a heavier machine, I re-sprung them with lighter springs. It all works great and now with full damping adjustability, I have a wide range to dial them in !
(Oh yeah, the front fender is also from a RC8)
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Yeah, I used to do that with the two scales, but this is a certified hi-tech, digital scale accurate within 1/10 of a pound (plus or minus).
psych0hans
Member
I know this is going to sound very stupid, but is there any way to mod the stock rim to accept dual discs?
Yeah, don't be dumb
Please don't put 2 disks on it !
The bike barely needs the one brake up front (as it is) !
mr-fabricator
New Member
My bike is 320lb with half a tank, a bit more weight to shave but not a lot ..
KTMGene390
New Member
After mods my bike weighs in at 331 lbs with a full tank of gas and in full street tirm.
179 lbs front tire & 152 lbs rear tire using two identical bathroom scales.
179 lbs front tire & 152 lbs rear tire using two identical bathroom scales.
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