Same here when you guys are running 7g+ rollers. I tried 7.5g rollers about a yr ago to see how they were and i lasted about 5mins before i hated everything about them, i just had no power, no revs, no torque, it died on hill and i couldnt get up to top speed unless i had an airstrip or something.
No way my revs were anywhere near 7200 on a flat normal road, usually i ended up down at 5000-6000 at most. On my 5.1g rollers, 1600 torque spring my tach normally reads between 7000-8400 once im up to speed, rises to 9000 down hills.
Anything over 5.5g kills my A50 on ANY torque spring stiffness, believe me, i tried lots of different combinations in the past and none worked as well for me as i have now. Maybe Scandinavia where you live is totally flat so your set up works there? Def doesnt wotk over hete tho, thats for sure.
Still say a tach is a must for tuning, takes away the guess work of what rpm the engine is running at.
And 9000 is where the rev limiter are after the CDI is cut, so at what speed do you hit the rev limiter?
Today i checked my rollers, as they feel worn down, and changed one, which was worn to the metal. So much for driving mixed 6,5 and 6g rollers, the heavier get worn down faster.
I changed the worn down roller with one which is only medium worn, as i have already ordered some dr.pulley from scooter-assassin, and i hit the rev limiter at 69 km/h gps after 100-200 meters driving on a flat road.
Before i changed the worn roller, i were hitting it at 61 km/h, so even though the rollers still need replacement, it is not as bad as before.
I have observed the same as mono, and ealier i were timing the time it took for me to hit 30, 50 and 60 on the speedometer to get the right roller weight, but the speedometer on this scooter is broken, so since im using GPS on my phone to see speed, i cant also use the phone to time it. But this is all solved, when i get the money for a
Stage 6 speedometer which can also time the time it takes to achieve a certain speed.