Monza Gearing

[yellow peril]

Just had a new Monza 225 engine set up at Replay and now looking at the gearing as like the TS1 is very revvy on standard GP200 gearing (18/47)
The engine is running a 30mm PHBH and Franspeed JL3 and dynoed at 22.6hp, my question is has anyone ran 20/47 to achieve 4.7 instead of the usual 19/46 (4.8), the reason is i have just purchased a new SSC 5 plate with the 47 crownwheel and dont really want to buy another!!
Will this be too high?
Thanks and any recommendations welcome

[scooty]

hi
why dont you try 19/47
is your gearbox italian or indian?
how do you like to ride balls out or steady/brisk?
do you ride solo or 2 up?

[yellow peril]

hi
why dont you try 19/47
is your gearbox italian or indian?
how do you like to ride balls out or steady/brisk?
do you ride solo or 2 up?

I think i need a 'stretched' chain for the 19/47, the gearbox is Indian so the 3rd/4th is quite close, definately a steady/brisk rider and always solo
Cheers

[scooty]

If you are already running 18/47 the chain may already be stretched enough to use with 19/47
try this first as its not a great difference to 19/46
i used to run my ts1 with 19/47 and a jl3 but it didnt like to rev on much through the gears (dont know about the franspeed tho) switched to a pm pipe and was great runs with 19/46 too
cheers scotty

[Avantone]

Just had a new Monza 225 engine set up at Replay and now looking at the gearing as like the TS1 is very revvy on standard GP200 gearing (18/47)
The engine is running a 30mm PHBH and Franspeed JL3 and dynoed at 22.6hp, my question is has anyone ran 20/47 to achieve 4.7 instead of the usual 19/46 (4.8), the reason is i have just purchased a new SSC 5 plate with the 47 crownwheel and dont really want to buy another!!
Will this be too high?
Thanks and any recommendations welcome

Hi, Where's it making it's power/torque? and does it feel like it runs out of gears?

[yellow peril]

The power/torque curve comes in quite early and then a straight curve to maximum power at 6000rpm and revs on to 8200, the feeling on the road is you need a 5th gear as the engine can easily pull through low revs in any gear.
As above it feels like it runs out of gears

[Avantone]

The power/torque curve comes in quite early and then a straight curve to maximum power at 6000rpm and revs on to 8200, the feeling on the road is you need a 5th gear as the engine can easily pull through low revs in any gear.
As above it feels like it runs out of gears

19x47xGP200 (4.95) or 20x47xGP200 (4.70) gives you very little improvement over your current set up.

You could try 18x47xLi150 (4.44). this would see you hit peak power at about 68MPH which is 10MPH higher than your current set up (peak in 3rd @ 53MPH).

If it could keep on on to it's redline in 4th you'd see just over 90MPH (but not likely). Li150 with your spread of power/torque would still give you that all important overlap between 3rd and 4th so you don't drop out of the power.