New X33... Blue crap in tank and yellow crap in carb..lol - Page 3

Weldangrind · 10-20-2010, 12:49 AM

Quote:

Originally Posted by Rabbit121

I haven't got a micrometer handy but I just noticed GIO list the chain as "KMC 428-116L"

looks like a 428 to me..

I think the cross bolt measurement on the sprocket is 67mm.. a couple weeks ago I ordered one of those $7 chinese digital vernier calipers.. hopefully it's here soon and i'll know for sure..

edit-- this looks like a close match, http://www.jtsprockets.com/52.0.html...el_uid=5202&p=

Good detective work. Please follow up in a new post when you can confirm it. I'm sure that information would benefit others that have the same bike.

Weldangrind · 10-20-2010, 01:33 AM

BTW, here's the direction I went with my son's 125: http://www.chinariders.net/modules.p...ewtopic&t=7703

Rabbit121 · 10-20-2010, 10:17 PM

ahhh right on. So the RM50 bolt pattern matches the 125.. I'm pretty sure the 125 and 140 gio use the same pattern so I'll just double check that when I get my meter.. and the RM50 is the same bolt pattern as the Suzuki JR80 up to 03 or something.. except the JR80 is 428 so that should be a perfect match..

how much smaller should I go? the 140 has a 48 tooth now, will 42 be a huge difference?

Weldangrind · 10-21-2010, 01:15 AM

Think of it as a final drive ratio, like a car. If your rear sprocket is a 48, and I presume that your front sprocket is a 14, the final drive ratio is 3.43. Check out the chart: http://www.jtsprockets.com/fileadmin...tgearratio.pdf

Changing to a 42 would bring you to a flat 3.00; that's not a huge increase. Once you get into the low two's, you're in land speed racing territory.

If we can somehow determine the rpm you're turning in top gear at full throttle, we can calculate your top speed. We can then reverse-engineer the process and see what effect other ratios will have.

Rabbit121 · 10-21-2010, 05:52 AM

Gio list's the bike as having a final drive of 15:48, so a 42 will be 2.80 from 3.20.

Right now the bike will rev as high as you want in 4th. I think peak hp is at something like 7400 rpm.

Weldangrind · 10-21-2010, 08:50 AM

I forgot to include overall tire diameter, in inches. Once you have that, plug the constants in here: http://www.angelfire.com/fl/procrastination/rear.html

There are several good calculators on the 'net, so let us know which one you choose. BTW, my guess on the ratio in fourth gear is 1.00:1, but IDK for sure.

Rabbit121 · 10-27-2010, 08:49 AM

Still haven't touched the sprocket, been too busy working on the headlight and wiring lol...

Anywho, I just got the warranty carb and tank this morning and the carb is a different model. I'm wondering if it might be better or worse.. first thing I like is the Air/Fuel mix is not directly under the bowl where it is impossible to adjust. instead it's on the same side as the idle screw. and choke is a metal lever that moves a slide instead of a flap like my stock carb.

here's a couple pics... maybe someone will know if it's any better than what I have.. or if I just just leave the old one on.

Weldangrind · 10-27-2010, 11:43 AM

It's tough to tell which carb to recommend, because different sides are shown. Maybe someone else here will know the difference right away. I'd try the new carb and see how it performs.

Love your Lego creation on the table.

waynev · 10-27-2010, 12:10 PM

With the A/F screw where it is on the new carb remember that it is backwards from the other location, when it is on the air filter side of the slide it controls air, screwing it in is richer, screwing it out is leaner.

Rabbit121 · 10-27-2010, 04:13 PM

thx.. actually those pictures are both of the new carb.. the original is still on the bike.

Rabbit121 · 10-29-2010, 06:17 PM

Guess I should have actually pulled my old carb and looked before I asked out that replacement.

completely smaller carb, won't work anyway lol..

Hopefully they can hook me up with the right one..

Rabbit121 · 11-15-2010, 09:31 PM

A little update... GIO did eventually get me the correct carb and I got it installed (with a proper foam air filter this time) and the bike is working really nice now.. I thought it was working good before but it did have a bit of hesitation but that is completely gone now.

and something else I thought was interesting... my neighbor bought an old 1984 Honda 200 big red three wheeler that was bogging quite bad and I couldn't help but notice the carb looked almost identical to the new spare PZ27 from my GIO so I suggested that we try swapping it just for fun. the damn thing was a PERFECT match (both Keihin), even the choke lever had the bracket to use his remote choke. incidentally my carb did fix his Big Red. just thought that was interesting..

FastDoc · 11-15-2010, 11:23 PM

Good to hear. Everybody wins. Once again Gio gets a '+1' in my book for standing behind their product and their customers.

Weldangrind · 11-16-2010, 01:42 AM

Glad to hear that Gio took care of you. Is your buddy going to buy a carb from Gio?

Rabbit121 · 11-17-2010, 01:27 PM

he already had a repair kit coming in the mail before we tried my PZ27.

10-20-2010, 01:33 AM	#32
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	BTW, here's the direction I went with my son's 125: http://www.chinariders.net/modules.p...ewtopic&t=7703 __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

10-21-2010, 01:15 AM	#34
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Think of it as a final drive ratio, like a car. If your rear sprocket is a 48, and I presume that your front sprocket is a 14, the final drive ratio is 3.43. Check out the chart: http://www.jtsprockets.com/fileadmin...tgearratio.pdf Changing to a 42 would bring you to a flat 3.00; that's not a huge increase. Once you get into the low two's, you're in land speed racing territory. If we can somehow determine the rpm you're turning in top gear at full throttle, we can calculate your top speed. We can then reverse-engineer the process and see what effect other ratios will have. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

10-21-2010, 08:50 AM	#36
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I forgot to include overall tire diameter, in inches. Once you have that, plug the constants in here: http://www.angelfire.com/fl/procrastination/rear.html There are several good calculators on the 'net, so let us know which one you choose. BTW, my guess on the ratio in fourth gear is 1.00:1, but IDK for sure. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

10-27-2010, 11:43 AM	#38
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	It's tough to tell which carb to recommend, because different sides are shown. Maybe someone else here will know the difference right away. I'd try the new carb and see how it performs. Love your Lego creation on the table. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

11-15-2010, 11:23 PM	#43
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Good to hear. Everybody wins. Once again Gio gets a '+1' in my book for standing behind their product and their customers. __________________ Happy to serve.
	0

10-20-2010, 10:17 PM	#33
Rabbit121 Join Date: Oct 2010 Posts: 41	ahhh right on. So the RM50 bolt pattern matches the 125.. I'm pretty sure the 125 and 140 gio use the same pattern so I'll just double check that when I get my meter.. and the RM50 is the same bolt pattern as the Suzuki JR80 up to 03 or something.. except the JR80 is 428 so that should be a perfect match.. how much smaller should I go? the 140 has a 48 tooth now, will 42 be a huge difference?
	0

10-21-2010, 05:52 AM	#35
Rabbit121 Join Date: Oct 2010 Posts: 41	Gio list's the bike as having a final drive of 15:48, so a 42 will be 2.80 from 3.20. Right now the bike will rev as high as you want in 4th. I think peak hp is at something like 7400 rpm.
	0

10-27-2010, 08:49 AM	#37
Rabbit121 Join Date: Oct 2010 Posts: 41	Still haven't touched the sprocket, been too busy working on the headlight and wiring lol... Anywho, I just got the warranty carb and tank this morning and the carb is a different model. I'm wondering if it might be better or worse.. first thing I like is the Air/Fuel mix is not directly under the bowl where it is impossible to adjust. instead it's on the same side as the idle screw. and choke is a metal lever that moves a slide instead of a flap like my stock carb. here's a couple pics... maybe someone will know if it's any better than what I have.. or if I just just leave the old one on.
	0

10-27-2010, 12:10 PM	#39
waynev Join Date: Aug 2009 Location: London, Ontario Posts: 1,097	With the A/F screw where it is on the new carb remember that it is backwards from the other location, when it is on the air filter side of the slide it controls air, screwing it in is richer, screwing it out is leaner.
	0

10-27-2010, 04:13 PM	#40
Rabbit121 Join Date: Oct 2010 Posts: 41	thx.. actually those pictures are both of the new carb.. the original is still on the bike.
	0

10-29-2010, 06:17 PM	#41
Rabbit121 Join Date: Oct 2010 Posts: 41	Guess I should have actually pulled my old carb and looked before I asked out that replacement. completely smaller carb, won't work anyway lol.. Hopefully they can hook me up with the right one..
	0

11-15-2010, 09:31 PM	#42
Rabbit121 Join Date: Oct 2010 Posts: 41	A little update... GIO did eventually get me the correct carb and I got it installed (with a proper foam air filter this time) and the bike is working really nice now.. I thought it was working good before but it did have a bit of hesitation but that is completely gone now. and something else I thought was interesting... my neighbor bought an old 1984 Honda 200 big red three wheeler that was bogging quite bad and I couldn't help but notice the carb looked almost identical to the new spare PZ27 from my GIO so I suggested that we try swapping it just for fun. the damn thing was a PERFECT match (both Keihin), even the choke lever had the bracket to use his remote choke. incidentally my carb did fix his Big Red. just thought that was interesting..
	0

11-16-2010, 01:42 AM	#44
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Glad to hear that Gio took care of you. Is your buddy going to buy a carb from Gio? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

11-17-2010, 01:27 PM	#45
Rabbit121 Join Date: Oct 2010 Posts: 41	he already had a repair kit coming in the mail before we tried my PZ27.
	0