It's been a loooooooooongg time since on this forum. Glad to see it's still up, running and active! In summer of 2013, I purchased a '13 Aprilia RSV4 Factory and have let the SV just sit in the garage, contemplating sale (not really). Well, all my cars have brought issues (transmission, accident, etc) and the RSV4 finally brought to my attention that the stator/flywheel manufacturer assembly was not compatible and burned 7 of 15 coils. This brought me to pull the SV back to life...and pay a bunch of unregistered back taxes. Anyhow, here goes:
owned since day 1
Pazzo short levers
aftermarket rearsets (can't remember brand)
Renegade dual high pipes
Bike sat for about 3.5 years, fully loaded (no fluids drained, etc)
NEVER had trans problems aside from slight engagement while clutch lever pulled (nothing feet planted couldn't overcome)
Southeast Georgia at Florida border, at the coastline.
Operating temp currently - 196-206F (stop and go traffic halfway > 210)
Operating speed limits - 30-50 mph
Clutch engagement is near/at full lever release (worse as engine warms)
Trans slips in all gears (worse as engine warms)
Gears engage when engine is cool (worse as engine warms)
Drivetrain can only manage "X" distance before complete loss of power (depends on load/speed of travel)
RPM engagement limited by temperature, low temp can run high RPM but once at operating temp (initially) limited to 5-6K rpm (worsens with use)
I pulled it out of the garage, put in a new battery, rode it 1.5 miles and realized there was an issue. Gear slip, rev a bit, slip, shift ride, rev slip, etc. Got worse worse worse. Barely made it the 4 miles I needed to before I had ABSOLUTELY no power delivery, would rev rev rev in gear but no go go go.
I tinkered with hyd clutch. Bleed, fill, pump. No help. Removed slave cylinder, watch piston travel (about 1/4"). Disassemble slave for inspection appeared fine. Pump, bleed, etc. no help.
Disassemble clutch master cylinder for inspection and appeared fine. Pump, bleed etc. to the point I had no pressure build. Decided I blew a seal.
Rebuild master cylinder with new kit. Bleed, pump, bleed, etc. Finally build nice pressure. Wallah! Bike moves. I make it home, but not completely satisfied.
Rode it to work (about 8 mile trip one way). In first couple pulls, clutch feel went from half lever to full. About mile 6-7, (very moderate ride) I could feel the slip coming and sure enough it did. If I exceeded a 1 MPH per second speed increase, it would slip. Blip throttle in gear and slip, any gear.
Way home, clutch release at the same point, full. Everything in paragraph above happened exactly the same. Barely made it home.
Bled clutch again, several cycles and NO AIR. Next day it acted the same. Clutch engagement always at near full release and can only make it the distance to and from. After the system cools it resets, which is why each to/from trip is the same.
Next day, decide that the oil is degraded and could use a change. Replaced with Motul 4100 10W-40 and Suzuki filter, the old oil was very thin but cleanish (only had about 1800 miles before storage).
Operation the same!
If I rev engine in gear beyond the engagement/temperature relation is further worsens the condition. Basically if I don't stay below 1 MPH per second while at sustained operating temp, it reduces the distance I can travel. The last mile to my house today, I was restricted to 30 mph, couldn't engage enough to go faster.
It will rev in neutral to full rpm, in gear clutch in to full rpm.
I feel that I have eliminated hydraulics. The lever disengages the clutch fine, but doesn't engage until full release.
How can this slip in every gear?
Why would this worsen with temperature? (extreme slip at mile 7 of 8)
Is this clutch replacement issue?
Guys, I'm sorry for the extremely long post. Thank you for you time and assistance.
13 Aprilia RSV4 Factory APRC ABS SBK SE