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9.4:1 vs. 8.4:1 vs 7.5:1 vs 7:1
Posted: Mon Jul 14, 2008 5:47 pm
by cf_z
im about to be ordering my gears, but im not for sure what i want. They will be ran with a Polini Corsa and PG long pipe, keli varator and 28mm carb. and purple wheels
I would most like to have a fast 20-50, but i would also like to be able to pop a wheelie once in a while, and take it up to 65+ if i get on a road capable of it.
heres what i want,
if youve got gears in your bike, tell me what ratio, top speed, and strongest acceleration points. (and engine mods)
also feel free to suggest anything to me too.
right now im thinking 7.5:1 from daywot.
Posted: Mon Jul 14, 2008 5:52 pm
by Dac
the PG is the best pipe for top end. but it is not the best for take off. For that reason alone i would go with the 7.5:1.
Re: 9.4:1 vs. 8.4:1 vs 7.5:1 vs 7:1
Posted: Mon Jul 14, 2008 10:15 pm
by nparks
I have 7.5:1 from VT and a v8 pipe. Once I get up to about 5mph it takes off like a rocket to about 35-40... I'm still breaking in the engine though so I haven't had a chance to really open it up.
Posted: Tue Jul 15, 2008 12:09 am
by cf_z
what engine have you got on there?
and c'mon i know more of you are running gears
Posted: Tue Jul 15, 2008 12:23 am
by Kenny_McCormic
cf_z wrote:what engine have you got on there?
and c'mon i know more of you are running gears
I run gears but they are stock cause I cant get any for a spree.
Posted: Tue Jul 15, 2008 12:31 am
by GN Racer
With that combo (once tuned), you'll have more than enough power to push any of those gears.
I think that you'll be happier with either the 7.5 or the 7.0.
Posted: Tue Jul 15, 2008 1:04 am
by nparks
cf_z wrote:what engine have you got on there?
and c'mon i know more of you are running gears
It's the SA50P... I believe it was the 1994 Elite S, but it didn't have the split throttle cable so I don't know. Oh and I it's a 75cc bore.
Posted: Tue Jul 15, 2008 9:39 am
by MIKEBB
I have Pg long and 7.5 to 1 gear and the take off feels slow but the top speed is good. I gonna try 8.44 to 1 and see if it has a better take off.
Posted: Tue Jul 15, 2008 9:44 am
by MIKEBB
We have the same set up except for the purple wheel
Posted: Tue Jul 15, 2008 10:39 am
by cf_z
so youve got a polini corsa? and the take off is slow?
Posted: Tue Jul 15, 2008 12:01 pm
by Karman
I'm running a 72cc Polini Corsa, 28mm OKO and PG Long with 8.44 gears. I'm happy with the gears - 8.44 is a nice all around ratio to run with a big bore kit.
Posted: Tue Jul 15, 2008 1:13 pm
by MIKEBB
Yes I have a corsa, and yes the take off is slow. Try 8.44 t o1 gear and let me know how's the take off.
Posted: Tue Jul 15, 2008 1:14 pm
by cf_z
Karman wrote:I'm running a 72cc Polini Corsa, 28mm OKO and PG Long with 8.44 gears. I'm happy with the gears - 8.44 is a nice all around ratio to run with a big bore kit.
how fast have you gone/ what can you bring it to safely?
can you do wheelies
Posted: Tue Jul 15, 2008 2:37 pm
by Karman
can you do wheelies
Add 4K clutch springs to that setup and you will do wheelies whether you want to or not
Posted: Wed Jul 16, 2008 1:36 pm
by cf_z
well i messaged him and told him to switch to the 8.44 from the 7.5. hopefully he'll read it before he ships it all.