72 MPH on a China Bike! - Page 2

Jim · 05-23-2007, 01:55 AM

I think we've gotten off topic...

ohwell, mine gets offroad now too... well sort of... I guess a forest service road is a road, but it has been out in:

about a foot and half of snow
rotten bark mulch
lots of pavement
gravel roads
about a foot to foot and half deep water crossing
very hard potholes gravel/dirt/sand roads at about 60km/h
sandy rocky hills

So far it has gone everywhere I wanted, kept up (for the most part) with the bigger bikes (group off road rides), and not really broken. I even think I got a little bit of air off a rock that looked sort of like a mini jump sticking out of a gravel road at 50km/h. I have bent my front rim a tiny bit, but still rides good, changed a tube, and had one bolt come out of the rear footpeg. About 1100km so far I think.

red2003 · 05-23-2007, 12:42 PM

I smell a CHINA BIKE edition of Pinks: All Out on the horizon............

Akonababe · 05-23-2007, 01:41 PM

With the new lifan engine in my viva I have hit 70 a couple of times but it cruises good at 60 with 17/45 sprockets and that makes me very happy.

shammash55 · 05-23-2007, 08:53 PM

hey akon, with the 17/45 wat was the speed on the viva motor.

TheOtherRide · 05-24-2007, 12:54 PM

FWIW, mine does 45mph at 6K rpm on a 17/45 setup.

Akonababe · 05-24-2007, 01:14 PM

On the viva motor you could get up to about 65 but the engine was way up on rpm's. The lifan motor all around runs a good 1500 rpm lower than the viva at all speed comparisons. Also the gears on the lifan motor are spread out better so you actually use your gears not like the viva that gets you to 5th gear in about 20 to 30 feet.

shammash55 · 05-24-2007, 08:36 PM

o ok thanks. looks like ill have to get the black crome motor.

elroyjetsn · 04-07-2008, 09:30 PM

Quote:

Originally Posted by TheOtherRide

FWIW, mine does 45mph at 6K rpm on a 17/45 setup.

BUMP

That works out to 9333 rpms @ 70mph. Think i'll spring for that combo on my VIVA.

04-08-2008, 05:49 PM

with my current setup which is I think 17 42...not sure if when they took the liberty to change sprockets on my bike they changed the front from stock. BUTTTT... i run 55mph at 6000 rpm. It is hard to believe how much harder the bike seems to run @7000 than at 6000. 6000 is much better. at least imo.

bisaho15 · 04-08-2008, 05:57 PM

i might just touch 7000 before i shift and i feel like i beat the hell out of this thing. what do you guys rev your gy-5 to?

elroyjetsn · 04-08-2008, 07:41 PM

Hmm, now that i think of it...

Probably should gear it so you reach the peak of your power band at 65-70 so you will have less trouble maintaining speed on grades and headwinds. :?

Think that would be closer to 8k for most of these bikes. :?:

erod · 04-15-2008, 10:42 PM

I have a stock UM dsf 200 and it can go 71-72 but it doesn't sound like it likes going that fast. I am 175 pounds and I have to tuck a bit. My bike cruises nice at 55. I would not drive it faster than that for very long. I have about 800 miles so far, and some of my problems with the bike have been posted before.

culcune · 04-15-2008, 10:46 PM

Erod, how's the bike running now? Things fixed?

05-23-2007, 12:42 PM	#17
red2003 Join Date: Jan 2007 Location: Northern Vermont, USA Posts: 1,251	I smell a CHINA BIKE edition of Pinks: All Out on the horizon............ __________________ First Chinabike: 2006 Roketa RSX200E Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
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05-23-2007, 01:41 PM	#18
Akonababe Join Date: Dec 2006 Location: Douglas, Arizona Posts: 154	With the new lifan engine in my viva I have hit 70 a couple of times but it cruises good at 60 with 17/45 sprockets and that makes me very happy. __________________ Ride hard and have FUN!!!!
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05-23-2007, 08:53 PM	#19
shammash55 Join Date: May 2007 Location: d'iberville,mississippi Posts: 74	hey akon, with the 17/45 wat was the speed on the viva motor. __________________ it takes the insane to keep the world sane Future 2015 csc rx3
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05-24-2007, 12:54 PM	#20
TheOtherRide Join Date: Sep 2006 Location: Montana Posts: 403	FWIW, mine does 45mph at 6K rpm on a 17/45 setup. __________________ ~Pauli~ Former 2006 Viva VX200SX owner
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05-24-2007, 01:14 PM	#21
Akonababe Join Date: Dec 2006 Location: Douglas, Arizona Posts: 154	On the viva motor you could get up to about 65 but the engine was way up on rpm's. The lifan motor all around runs a good 1500 rpm lower than the viva at all speed comparisons. Also the gears on the lifan motor are spread out better so you actually use your gears not like the viva that gets you to 5th gear in about 20 to 30 feet. __________________ Ride hard and have FUN!!!!
	0

05-23-2007, 01:55 AM	#16
Jim Join Date: Mar 2007 Location: Abbotsford, BC, Canada Posts: 4,880	I think we've gotten off topic... ohwell, mine gets offroad now too... well sort of... I guess a forest service road is a road, but it has been out in: about a foot and half of snow rotten bark mulch lots of pavement gravel roads about a foot to foot and half deep water crossing very hard potholes gravel/dirt/sand roads at about 60km/h sandy rocky hills So far it has gone everywhere I wanted, kept up (for the most part) with the bigger bikes (group off road rides), and not really broken. I even think I got a little bit of air off a rock that looked sort of like a mini jump sticking out of a gravel road at 50km/h. I have bent my front rim a tiny bit, but still rides good, changed a tube, and had one bolt come out of the rear footpeg. About 1100km so far I think.
	0

05-24-2007, 08:36 PM	#22
shammash55 Join Date: May 2007 Location: d'iberville,mississippi Posts: 74	o ok thanks. looks like ill have to get the black crome motor. __________________ it takes the insane to keep the world sane Future 2015 csc rx3
	0

04-08-2008, 05:49 PM	#24
Guest Posts: n/a	with my current setup which is I think 17 42...not sure if when they took the liberty to change sprockets on my bike they changed the front from stock. BUTTTT... i run 55mph at 6000 rpm. It is hard to believe how much harder the bike seems to run @7000 than at 6000. 6000 is much better. at least imo.
	0

04-08-2008, 05:57 PM	#25
bisaho15 Join Date: Mar 2008 Posts: 24	i might just touch 7000 before i shift and i feel like i beat the hell out of this thing. what do you guys rev your gy-5 to?
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04-08-2008, 07:41 PM	#26
elroyjetsn Join Date: Mar 2008 Location: West Virginia Posts: 629	Hmm, now that i think of it... Probably should gear it so you reach the peak of your power band at 65-70 so you will have less trouble maintaining speed on grades and headwinds. :? Think that would be closer to 8k for most of these bikes. :?: __________________ Wayne Wildfire WF300-SP
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04-15-2008, 10:42 PM	#27
erod Join Date: Jun 2007 Location: north fl Posts: 6	I have a stock UM dsf 200 and it can go 71-72 but it doesn't sound like it likes going that fast. I am 175 pounds and I have to tuck a bit. My bike cruises nice at 55. I would not drive it faster than that for very long. I have about 800 miles so far, and some of my problems with the bike have been posted before.
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04-15-2008, 10:46 PM	#28
culcune Join Date: May 2006 Location: Yuma, Arizona Posts: 9,035	Erod, how's the bike running now? Things fixed? __________________ "They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard
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