New X33... Blue crap in tank and yellow crap in carb..lol - Page 2

Rabbit121 · 10-17-2010, 02:49 PM

Well, it took a short trip out and a good walk home and then a little fine tuning of the carb but I think I've managed to get it running right.

Went for a good hour long trip though the woods and it's now starting good and delivering the power. Bogs a bit if you crack the throttle too quick, not sure if I need to richn' or lean it out a tad.

The little motor really turns on in the high RPM, it's going to be fun once it's broken in. and it totally needs a 5th gear lol, I wonder if a smaller XR50 style sprocket should fit?

Weldangrind · 10-17-2010, 04:24 PM

Sweet bike!

Yes, a Honda style sprocket will do the trick, but it pays to check and measure the stock sprocket first. I use www.jtsprockets.com and compare the specs. BTW, I've had excellent luck with JT sprockets on all of our machines.

Rabbit121 · 10-18-2010, 02:10 PM

Good call on double checking lol.. Looks more like around 50mm eye to eye or 70mm diagonal eye to eye. says nothing on the sprocket either so I'm not sure if it's a 420 or 428. the 125cc is a 428 with the same bolt pattern i think.

I wonder if this is proprietary to GIO or if there is something else that uses this?

waynev · 10-18-2010, 02:44 PM

Well my X31 250cc is also 428 so the odds are so is your X33.

Rabbit121 · 10-18-2010, 03:03 PM

I'm having my doubts because some of my searching has indicated the Xmotos XTR140 and XB-33 seem to use 420.

is your X31 manufactured by Xmotos?

waynev · 10-18-2010, 04:19 PM

Yes, it was made by X-Motos, i'll measure it up tonight to see if it matches yours.

How thick is your sprocket? the only difference between 420 and 428 is the width.

waynev · 10-18-2010, 05:16 PM

Ok, the stock chain on my X31 obviously has a pitch of 1/2" (the 4 from 420 or 428 means four 1/8's), the roller width is .3125" and the roller diamter is .330", i just opened a new box of DID 428D chain and it is exactly the same measurements.

If your chain is 1/2" pitch, .3125" roller diameter and .25" roller width then you do need 420 chain.

mizke · 10-18-2010, 05:30 PM

how do you take those measurments ? could you post a picture of how you took them

waynev · 10-18-2010, 06:22 PM

Well a vernier caliper will be needed, basically measure the roller diameter, roller width ( i usually measure inbetween the inner links ) and then the pitch, since they go in 1/8"s it pretty easy to tell the difference between 428 ( 1/2" ) and 530 ( 5/8") pitches.

mizke · 10-18-2010, 06:51 PM

and thats mm you are using ?

i measured mine and i think its smaller then yours

waynev · 10-18-2010, 08:00 PM

Quote:

Originally Posted by mizke

and thats mm you are using ?

i measured mine and i think its smaller then yours

No it's inches, that's why i put the " after my dimensions. Standard roller chain is imperial dimensions hence the pitch measured in 1/8ths and most charts you will find will also give roller diameters and widths in imperial dimensions. If you want my values in MM just times by 25.4.

1/2" pitch is 12.7mm
.330" roller diameter is 8.382mm
.3125" roller width is 7.9375mm

jfauth01 · 10-18-2010, 09:40 PM

Very nice bike looks really good...

TurboT · 10-19-2010, 03:47 PM

Quote:

Originally Posted by waynev

If you want my values in MM just times by 25.4.

Or hit the "inch/mm" button on your slick digital vernier.

waynev · 10-19-2010, 04:06 PM

Quote:

Originally Posted by TurboT

Or hit the "inch/mm" button on your slick digital vernier.

It's from Canadian Tire, it ain't that slick.

Rabbit121 · 10-19-2010, 09:16 PM

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=

10-17-2010, 04:24 PM	#17
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Sweet bike! Yes, a Honda style sprocket will do the trick, but it pays to check and measure the stock sprocket first. I use www.jtsprockets.com and compare the specs. BTW, I've had excellent luck with JT sprockets on all of our machines. __________________ 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
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10-18-2010, 05:30 PM	#23
mizke Join Date: Aug 2010 Location: austin, tx Posts: 1,452	how do you take those measurments ? could you post a picture of how you took them __________________ 200cc beast replica,carsoli cdi,performance coil,fmf powercore 2,uni air filter,hour/tach meter,jetted mikuni carb,msr bars,moose racing grips,yz250f clutch perch,D.I.D chain
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10-18-2010, 06:51 PM	#25
mizke Join Date: Aug 2010 Location: austin, tx Posts: 1,452	and thats mm you are using ? i measured mine and i think its smaller then yours __________________ 200cc beast replica,carsoli cdi,performance coil,fmf powercore 2,uni air filter,hour/tach meter,jetted mikuni carb,msr bars,moose racing grips,yz250f clutch perch,D.I.D chain
	0

10-18-2010, 09:40 PM	#27
jfauth01 Join Date: Oct 2010 Posts: 11	Gio bike.. Very nice bike looks really good...
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10-17-2010, 02:49 PM	#16
Rabbit121 Join Date: Oct 2010 Posts: 41	Well, it took a short trip out and a good walk home and then a little fine tuning of the carb but I think I've managed to get it running right. Went for a good hour long trip though the woods and it's now starting good and delivering the power. Bogs a bit if you crack the throttle too quick, not sure if I need to richn' or lean it out a tad. The little motor really turns on in the high RPM, it's going to be fun once it's broken in. and it totally needs a 5th gear lol, I wonder if a smaller XR50 style sprocket should fit?
	0

10-18-2010, 02:10 PM	#18
Rabbit121 Join Date: Oct 2010 Posts: 41	Good call on double checking lol.. Looks more like around 50mm eye to eye or 70mm diagonal eye to eye. says nothing on the sprocket either so I'm not sure if it's a 420 or 428. the 125cc is a 428 with the same bolt pattern i think. I wonder if this is proprietary to GIO or if there is something else that uses this?
	0

10-18-2010, 02:44 PM	#19
waynev Join Date: Aug 2009 Location: London, Ontario Posts: 1,097	Well my X31 250cc is also 428 so the odds are so is your X33.
	0

10-18-2010, 03:03 PM	#20
Rabbit121 Join Date: Oct 2010 Posts: 41	I'm having my doubts because some of my searching has indicated the Xmotos XTR140 and XB-33 seem to use 420. is your X31 manufactured by Xmotos?
	0

10-18-2010, 04:19 PM	#21
waynev Join Date: Aug 2009 Location: London, Ontario Posts: 1,097	Yes, it was made by X-Motos, i'll measure it up tonight to see if it matches yours. How thick is your sprocket? the only difference between 420 and 428 is the width.
	0

10-18-2010, 05:16 PM	#22
waynev Join Date: Aug 2009 Location: London, Ontario Posts: 1,097	Ok, the stock chain on my X31 obviously has a pitch of 1/2" (the 4 from 420 or 428 means four 1/8's), the roller width is .3125" and the roller diamter is .330", i just opened a new box of DID 428D chain and it is exactly the same measurements. If your chain is 1/2" pitch, .3125" roller diameter and .25" roller width then you do need 420 chain.
	0

10-18-2010, 06:22 PM	#24
waynev Join Date: Aug 2009 Location: London, Ontario Posts: 1,097	Well a vernier caliper will be needed, basically measure the roller diameter, roller width ( i usually measure inbetween the inner links ) and then the pitch, since they go in 1/8"s it pretty easy to tell the difference between 428 ( 1/2" ) and 530 ( 5/8") pitches.
	0

10-19-2010, 09:16 PM	#30
Rabbit121 Join Date: Oct 2010 Posts: 41	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=
	0