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10-17-2010, 02:49 PM | #16 |
Join Date: Oct 2010
Posts: 41
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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? |
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10-17-2010, 04:24 PM | #17 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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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.
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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, 02:10 PM | #18 |
Join Date: Oct 2010
Posts: 41
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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? |
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10-18-2010, 02:44 PM | #19 |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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Well my X31 250cc is also 428 so the odds are so is your X33.
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10-18-2010, 03:03 PM | #20 |
Join Date: Oct 2010
Posts: 41
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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? |
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10-18-2010, 04:19 PM | #21 |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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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. |
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10-18-2010, 05:16 PM | #22 |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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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. |
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10-18-2010, 05:30 PM | #23 |
Join Date: Aug 2010
Location: austin, tx
Posts: 1,452
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how do you take those measurments ? could you post a picture of how you took them
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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, 06:22 PM | #24 |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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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.
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10-18-2010, 06:51 PM | #25 |
Join Date: Aug 2010
Location: austin, tx
Posts: 1,452
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and thats mm you are using ?
i measured mine and i think its smaller then yours
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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, 08:00 PM | #26 | |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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Quote:
1/2" pitch is 12.7mm .330" roller diameter is 8.382mm .3125" roller width is 7.9375mm |
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10-18-2010, 09:40 PM | #27 |
Join Date: Oct 2010
Posts: 11
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Gio bike..
Very nice bike looks really good...
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10-19-2010, 03:47 PM | #28 | |
Join Date: Sep 2008
Location: Surrey, B.C., Canada
Posts: 2,185
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Quote:
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10-19-2010, 04:06 PM | #29 | |
Join Date: Aug 2009
Location: London, Ontario
Posts: 1,097
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Quote:
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10-19-2010, 09:16 PM | #30 |
Join Date: Oct 2010
Posts: 41
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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= |
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