power loss

Hi everyone, got an issue - Backstory 1. I have a 1990 max, 25k miles now, original motor. bought used in 2000 with. 4k mi. Live in AZ. pic below. 2. sat in garage at one point for 10 years, had it rebuilt jan 2020. jet kit, dale walker holeshot dual exhausts, new plugs etc. 3. ran great until...

I recently bought an 88 with a stage 7 jet kit and 4 into 1 kerker. It sounds good, but I think it is lacking power, especially at 7,000 rpm. It accelerates smoothly until 6,500 then it will hesitate for half a second, pull to 7,000 and then it is like it hits a rev limiter--no more power. I...

Greetings. So I've got another electrical problem... Went out for a 5 hour ride yesterday, about a mile from my destination I stopped at a carryout and turned off the bike. When I came back out ten minutes later, I go to turn the key on and there was no power. Puzzled, I took off the seat and...

Does anyone know the approx. drivetrain losses on a Vmax? My calculations come up with between 15-20%. Does this seem correct?:confused2: