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View Full Version : DR250 wobbly rear sprocket


rok-the-boat
28th April 2006, 23:38
I have an early 1990s DR250 and have noticed that the rear sprocket moves about too much - lateral movement, not back and forth as you might expect. Any guesses as to why or useful tips before I pull it apart?
Rincewind
28th April 2006, 23:54
It's probably best if you just pull it appart and get in there and take a look.
If it's the same as the set up on my 87 600 it's a rubber shock drive coupling thingy and it has probably broken down,it's easy to fix the rubber shock drive thingy just pulls out of the hub easy peasy !!!
Crasherfromwayback
29th April 2006, 03:11
I have an early 1990s DR250 and have noticed that the rear sprocket moves about too much - lateral movement, not back and forth as you might expect. Any guesses as to why or useful tips before I pull it apart?
Yeah mate, if it has a rubber 'cush drive', then it may be no big thing.
I assume it does, as if it's a solid mounting then I'm sure that you'd notice the sprocket mounting bolts loose.
Unless it's REALLY excessive....don't sweat it.
Bonez
29th April 2006, 07:09
I have an early 1990s DR250 and have noticed that the rear sprocket moves about too much - lateral movement, not back and forth as you might expect. Any guesses as to why or useful tips before I pull it apart?As mentioned it may be just the cush drive rubbers being worn/breaking down. Also make sure all the spacers are there and fitted correctly.
White trash
29th April 2006, 08:54
I reckon the sprocket spacer (beneath the carrier) hasn't been fitted or the bearing in it's fucked.
Bonez
29th April 2006, 08:56
I reckon the sprocket spacer (beneath the carrier) hasn't been fitted or the bearing in it's fucked.That just about covers everything I think.
XTC
29th April 2006, 09:47
Have a look here
http://www.mrcycles.com/fiche_section_detail.asp

This site has microfiches online for alot of bikes. If your DR is the SE model 1990-1995 then it has a cush drive and sprocket carrier. If it's just a DR250 then the sprocket should bolt directly to the hub.

Andy.
Bonez
29th April 2006, 09:59
According to the parts fiche the sprocket bolts directly to the hub.
http://www.mrcycles.com/fiche_section_detail.asp
On 90-93 models yes. Later models had a seperate rear sprocket drum with rubber shock absorbers aka cush drive.
XTC
29th April 2006, 10:00
Yeah had a look into it further..... Hope the microfiche helps him see what goes where.
Bonez
29th April 2006, 10:15
Yeah had a look into it further..... Hope the microfiche helps him see what goes where.A good resource alright.:yes: I was surprised how far back they go. All my old shitters are covered ;). Thanks.
XTC
29th April 2006, 10:19
A good resource alright.:yes: I was surprised how far back they go. All my old shitters are covered ;). Thanks.
No probs bonez - Just googled "1991 DR250 parts diagram" and there it was top of the page....... I love Google. :)
rok-the-boat
1st May 2006, 21:46
OK - pulled it apart. Mine's a 1993 and it has a bearing which is totally shot. Gave it to a local car/machine shop to pull the bearing and fit a new one.

Cheers for the advice.
Bonez
2nd May 2006, 19:23
OK - pulled it apart. Mine's a 1993 and it has a bearing which is totally shot. Gave it to a local car/machine shop to pull the bearing and fit a new one.

Cheers for the advice.Good on ya for getting it sorted.:yes: