HiBird 250 sprockets

Dragon · 04-17-2009, 03:48 PM

Stock gearing is 16 front and 46 back, which means gear ratio is 2.875. I want a gear ratio of 2.5 for highway, like JTF259.17 and JT269.43. Do y'all think a 17 up front would clear?

edit: The clearance between the 16-tooth with chain and the engine case is about 4mm.

DDG1976 · 04-17-2009, 03:53 PM

Couldn't tell without the chain on, but it looks like a 17 would be ok.

Dragon · 04-17-2009, 04:19 PM

Where can I find a JTF259.17? I've tried bikebandit, jcwhiteney, and denniskirk without luck.

DDG1976 · 04-17-2009, 04:32 PM

http://www.powersportsuperstore.com/...22&Search.y=10

Dragon · 04-17-2009, 10:19 PM

Quote:

Originally Posted by DDG1976

http://www.powersportsuperstore.com/SearchResults.asp?Search=jtf259&Search.x=22&Search .y=10

They only sell up to 16-tooth.

DDG1976 · 04-17-2009, 11:48 PM

You can call them and get a 17(more than likely). I had to call them and get a 43 tooth for the rear of my GY-5 because they didn't have it listed on the website.

Dragon · 04-18-2009, 02:06 PM

The clearance between the 16-tooth sprocket with chain and the engine case is only about 4mm. If I install a 17-tooth, will I have to grind off some of the engine case?

wayfastwilly610 · 04-20-2009, 12:02 AM

a 17 wont clear without grinding a lot but i put a 40t on the rear and dropped about 1000 rpms and it runs great.it will cruise at 80 on the factory speedo, about 70mph acsual. mine is all stock with a 110 main jet. im gutting the pipe, installind an crf250 silencer, a clamp on uni filter and jetting up to a 115. ill keep yall posted. 8)

Dragon · 04-20-2009, 12:17 AM

The plastic pad on the swing-arm wears out quickly with stock sprockets (16 front, 46 rear). I'm afraid if I use smaller rear sprocket, the pad will wear out even faster.

Hey willy, is the Hibird rear sprocket the same as Lifan's?

wayfastwilly610 · 04-20-2009, 12:33 AM

i dont know dragon, i just called that eternal journey guy on here and he knew just what i needed and had a good bit of knowledge of the bikes. 8)

wayfastwilly610 · 04-20-2009, 12:37 AM

hey dragon i just remembered he said if it had 4 bolts holding it to the hub they were the same. 8)

Cal25 · 04-20-2009, 09:29 AM

Yep, its the same.

Dragon · 04-23-2009, 10:35 AM

I'm confused by the different posts about the front 520 sprocket size. Some say use jtf-328; other say use jtf-1324. The two are very similar, within 1mm. I took my countersprocket off my bike and measured it with my plastic ruler. I'm not skilled enough for it to know which sprocket is a better fit. To y'all Lifan guys out there, which is the better fit front sprocket, jtf-328 or jtf-1324?

katoranger · 10-20-2009, 09:25 AM

The jtf 328 will not fit the lifan counter shaft. I found this out, but trying the one that came on the xr200r on the lifan engine.

So you need to use the 1324 one. I will be ordering one to let you know how it fits.

Allen

04-17-2009, 03:48 PM	#1
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	HiBird 250 sprockets Stock gearing is 16 front and 46 back, which means gear ratio is 2.875. I want a gear ratio of 2.5 for highway, like JTF259.17 and JT269.43. Do y'all think a 17 up front would clear? edit: The clearance between the 16-tooth with chain and the engine case is about 4mm. __________________ Chinabikeless
	0

04-17-2009, 03:53 PM	#2
DDG1976 Join Date: Aug 2008 Location: Ringgold, Ga. Posts: 410	Couldn't tell without the chain on, but it looks like a 17 would be ok. __________________ I have all of soberday to satur up!!
	0

04-17-2009, 04:19 PM	#3
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	Where can I find a JTF259.17? I've tried bikebandit, jcwhiteney, and denniskirk without luck. __________________ Chinabikeless
	0

04-17-2009, 04:32 PM	#4
DDG1976 Join Date: Aug 2008 Location: Ringgold, Ga. Posts: 410	http://www.powersportsuperstore.com/...22&Search.y=10 __________________ I have all of soberday to satur up!!
	0

04-17-2009, 11:48 PM	#6
DDG1976 Join Date: Aug 2008 Location: Ringgold, Ga. Posts: 410	You can call them and get a 17(more than likely). I had to call them and get a 43 tooth for the rear of my GY-5 because they didn't have it listed on the website. __________________ I have all of soberday to satur up!!
	0

04-18-2009, 02:06 PM	#7
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	The clearance between the 16-tooth sprocket with chain and the engine case is only about 4mm. If I install a 17-tooth, will I have to grind off some of the engine case? __________________ Chinabikeless
	0

04-20-2009, 12:02 AM	#8
wayfastwilly610 Join Date: Apr 2009 Posts: 10	a 17 wont clear without grinding a lot but i put a 40t on the rear and dropped about 1000 rpms and it runs great.it will cruise at 80 on the factory speedo, about 70mph acsual. mine is all stock with a 110 main jet. im gutting the pipe, installind an crf250 silencer, a clamp on uni filter and jetting up to a 115. ill keep yall posted. 8)
	0

04-20-2009, 12:17 AM	#9
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	The plastic pad on the swing-arm wears out quickly with stock sprockets (16 front, 46 rear). I'm afraid if I use smaller rear sprocket, the pad will wear out even faster. Hey willy, is the Hibird rear sprocket the same as Lifan's? __________________ Chinabikeless
	0

04-20-2009, 12:33 AM	#10
wayfastwilly610 Join Date: Apr 2009 Posts: 10	i dont know dragon, i just called that eternal journey guy on here and he knew just what i needed and had a good bit of knowledge of the bikes. 8)
	0

04-20-2009, 12:37 AM	#11
wayfastwilly610 Join Date: Apr 2009 Posts: 10	hey dragon i just remembered he said if it had 4 bolts holding it to the hub they were the same. 8)
	0

04-20-2009, 09:29 AM	#12
Cal25 Join Date: Feb 2008 Location: Terrell and Grapevine Tx. Posts: 1,585	Yep, its the same.
	0

04-23-2009, 10:35 AM	#13
Dragon Join Date: Nov 2007 Location: Tejas Posts: 834	I'm confused by the different posts about the front 520 sprocket size. Some say use jtf-328; other say use jtf-1324. The two are very similar, within 1mm. I took my countersprocket off my bike and measured it with my plastic ruler. I'm not skilled enough for it to know which sprocket is a better fit. To y'all Lifan guys out there, which is the better fit front sprocket, jtf-328 or jtf-1324? __________________ Chinabikeless
	0

10-20-2009, 09:25 AM	#14
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	The jtf 328 will not fit the lifan counter shaft. I found this out, but trying the one that came on the xr200r on the lifan engine. So you need to use the 1324 one. I will be ordering one to let you know how it fits. Allen __________________ You meet the nicest people on a Honda Clone.
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