tt250 rear end failure

upgasgas1224 · 11-05-2018, 11:28 PM

this is what happens when the rear sprocket bolts either come loose or come stripped form the factory ... new rear rim ... new swing arm and chain adjuster.

roundhouse · 11-06-2018, 07:38 AM

yikes. I bet that was terrifying. glad it was not worse.

Weldangrind · 11-06-2018, 10:28 AM

Was it considered to be warranty?

Azhule · 11-06-2018, 11:10 AM

Hopefully you didn't get tossed from the bike and hurt from that insane failure... could have easily locked up or twisted funny and "whip/throw" you off the bike

Essayons · 11-06-2018, 12:04 PM

Ouch. At what mileage did this happen? Had you done any work to the bike, such as changing sprocket?

upgasgas1224 · 11-06-2018, 12:27 PM

so i was going about 45mph when this happenned thankfully one bolt held in and i was not tossed from the bike. i had csc put the 47 tooth sprocket on when i bought the bike and it happened at about 3000miles on the odo there was no lock tight on the bolts and they vibrated out im guessing and or they were cross treaded by the guys at csc simple mistake im not mad it gave me some quality time tinkering to fix it and it was all covered under warranty so it was basically a free fix i did however have to send back the old rim. only issue i ran into with the replacement parts is the bolts they sent to put the sprocket on the new rim were too long so i had to go to the hardware store and get some m10 by 1.25 studs and cut those because they also were a hair too long.... the ones csc sent wernt the best quality for the application anyways and id rather not have this happen again so some good bolts and lock tight should fix it.

2LZ · 11-06-2018, 12:55 PM

It's been my experience with these that the metal in the hub is very gummy. When I changed my TT250 sprocket, I had to be super careful pulling them, then I ran a tap down them to clean them out. They had a white type of locktite in the holes and the threads weren't the prettiest once extracted. I used my own bolts and blue locktite upon reassembly. I've now been inspired to check them.

ben2go · 11-06-2018, 06:36 PM

MegaDan put a thread together that lists the Honda parts to fix that problem. It's been a recurring problem with some of the other CB's as well.

upgasgas1224 · 11-06-2018, 08:40 PM

Quote:

Originally Posted by ben2go

MegaDan put a thread together that lists the Honda parts to fix that problem. It's been a recurring problem with some of the other CB's as well.

what's the title of the thread. or better yet can you tag a link

Weldangrind · 11-07-2018, 10:44 AM

Dan's thread: http://www.chinariders.net/showthrea...=hawk+sprocket

2LZ · 11-07-2018, 01:34 PM

Quote:

Originally Posted by Weldangrind

Dan's thread: http://www.chinariders.net/showthrea...=hawk+sprocket

The TT250 has a different setup from the Hawk. I wonder if it would convert?
Read the thread. Sure miss Hertz around here. :-(

ben2go · 11-07-2018, 07:50 PM

Quote:

Originally Posted by 2LZ

The TT250 has a different setup from the Hawk. I wonder if it would convert?
Read the thread. Sure miss Hertz around here. :-(

Yeah. He is missed.

culcune · 11-07-2018, 08:20 PM

Quote:

Originally Posted by 2LZ

Sure miss Hertz around here. :-(

Quote:

Originally Posted by ben2go

Yeah. He is missed.

Getting off topic, but his birthday reminder is coming up on FB for Nov. 11th since we became friends through the FB group, China Bikes North America. :(

NzBrakelathes · 11-07-2018, 08:44 PM

The rubber bushes in the rear hub?
Several solutions possible n I was thinking to offer these in my online shop
Some have a bush no thread n a bolt they holds sprocket etc maybe Hawk 250
Some have a bolt into the bush maybe CSC250
Some have a metal insert and bolt into it no Cush drive but less trouble
Thoughts?

pete · 11-08-2018, 12:18 AM

dose the hawk motor have a cushing unit in the clutch basket...
springs between the alloy basket & backing gear..

my XT660 has both in the basket and rear hub..but the TTR250 has
no cush drive at all... most 250cc bikes don't need a cush unit
as the engine braking effect between power strokes is not big
enough to create a lot of back lash in the drive train when you
come off the throttle...

..

11-06-2018, 10:28 AM	#3
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Was it considered to be warranty? __________________ 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

11-06-2018, 11:10 AM	#4
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	Hopefully you didn't get tossed from the bike and hurt from that insane failure... could have easily locked up or twisted funny and "whip/throw" you off the bike __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
	0

11-06-2018, 12:04 PM	#5
Essayons Join Date: Mar 2018 Location: fontana, california Posts: 333	Ouch. At what mileage did this happen? Had you done any work to the bike, such as changing sprocket? __________________ 2018 TT 250 2016 RX3 1979 CB750K
	0

11-06-2018, 12:27 PM	#6
upgasgas1224 Join Date: May 2017 Location: Michigan Posts: 107	the failure so i was going about 45mph when this happenned thankfully one bolt held in and i was not tossed from the bike. i had csc put the 47 tooth sprocket on when i bought the bike and it happened at about 3000miles on the odo there was no lock tight on the bolts and they vibrated out im guessing and or they were cross treaded by the guys at csc simple mistake im not mad it gave me some quality time tinkering to fix it and it was all covered under warranty so it was basically a free fix i did however have to send back the old rim. only issue i ran into with the replacement parts is the bolts they sent to put the sprocket on the new rim were too long so i had to go to the hardware store and get some m10 by 1.25 studs and cut those because they also were a hair too long.... the ones csc sent wernt the best quality for the application anyways and id rather not have this happen again so some good bolts and lock tight should fix it. __________________ 04 flywing 150 05 flywing 150 07 gasgas ec200 18 csc tt250 / foam filter mod, amazon exhaust, mikunki carb, 47tooth sprocket, o ring chain, stereo system, amsoil oil, honda 10w fork oil, tusk bars and brush guards.... more to come
	1

11-06-2018, 12:55 PM	#7
2LZ Join Date: Mar 2010 Location: Volcano, Ca Posts: 7,092	It's been my experience with these that the metal in the hub is very gummy. When I changed my TT250 sprocket, I had to be super careful pulling them, then I ran a tap down them to clean them out. They had a white type of locktite in the holes and the threads weren't the prettiest once extracted. I used my own bolts and blue locktite upon reassembly. I've now been inspired to check them. __________________ "Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350
	1

11-06-2018, 07:38 AM	#2
roundhouse Join Date: Sep 2017 Location: N Texas Posts: 706	yikes. I bet that was terrifying. glad it was not worse.
	0

11-06-2018, 06:36 PM	#8
ben2go Join Date: Jun 2011 Posts: 1,335	MegaDan put a thread together that lists the Honda parts to fix that problem. It's been a recurring problem with some of the other CB's as well.
	0

11-07-2018, 10:44 AM	#10
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Dan's thread: http://www.chinariders.net/showthrea...=hawk+sprocket __________________ 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
	1

11-07-2018, 08:44 PM	#14
NzBrakelathes Join Date: Jun 2016 Location: Hell Posts: 2,408	The rubber bushes in the rear hub? Several solutions possible n I was thinking to offer these in my online shop Some have a bush no thread n a bolt they holds sprocket etc maybe Hawk 250 Some have a bolt into the bush maybe CSC250 Some have a metal insert and bolt into it no Cush drive but less trouble Thoughts?
	0

11-08-2018, 12:18 AM	#15
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,261	dose the hawk motor have a cushing unit in the clutch basket... springs between the alloy basket & backing gear.. my XT660 has both in the basket and rear hub..but the TTR250 has no cush drive at all... most 250cc bikes don't need a cush unit as the engine braking effect between power strokes is not big enough to create a lot of back lash in the drive train when you come off the throttle... .. __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
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