First Time Rider
Arm chair racerNew to the board
Many years ago I swapped out my bent axle on my 85 250r for a straight one I got off eBay. I can't remember if I got it from a 86. It looks like the po swapped out the sprocket hub or at least it was taking ofd then beat back on. So I want to buy new sprockets and need to know what year hub I have. What would I measure? Or look for?
Wires, Hoses, & Digital Wizardry.
Got the holeshot
An '85 sprocket hub will have threaded holes in the hub that the sprocket bolts to, and the sprocket will be on the outside of the hub. 1985 axle: http://www.ebay.com/itm/1985-HONDA-2...3757a2&vxp=mtr
An '86-89 sprocket hub will not have threaded holes in the hub, and the sprocket will be on the inside of the hub. 1986-89 axle: http://www.ebay.com/itm/TRX250R-1988...d06481&vxp=mtr
Last edited by Red Rider; 12-09-2014 at 04:44 AM.
Red Rider's Sand Machine Updated 07/23/14
First Time Rider
Arm chair racerNew to the board
So would a 86 sprocket work on a 85? I see some offer aftermarket sprockets that will work on a 85 and 86 and some wont work on both?mine turned out to be a 85.
Wires, Hoses, & Digital Wizardry.
Got the holeshot
You can use an '86-89 sprocket on an '85 axle if you use the appropriate conical seat bolts to mount it up, but you can't use an '85 sprocket on an '86-89 axle.
Red Rider's Sand Machine Updated 07/23/14
At The Back Of The Pack
Arm chair racerAt the back of the pack
If the axle you got on ebay fit into the 85 carrier, its an 85 axle you have. The 86 wont fit into the 85 carrier. hope this helps.Originally Posted by down4thakrown
Shart Guard .......Use it !
Pink Powerwheels Barbie trike
Wamo Big Wheel with a solid trikecycle front tire
Mini bike 3hp Briggs and Stratton with cambells soup can exhaust
Schwinn stingray with coaster brakes
1985 Crash and Burn champ
1st place National Endo Championship
Wires, Hoses, & Digital Wizardry.
Got the holeshot
Sure it will.
Red Rider's Sand Machine Updated 07/23/14
Side-hilling son of a gun
Got the holeshot
This is how I remember what interchanges.
The axle bearings fits from 1985-1989 so all axles will interchange. The bearing carrier in the 85 swinger is a smaller diameter but the bearings are the same so you cannot swap the carriers from 85 into 86-89.
http://www.atvparthub.com/A251320_Mo...FRSGfgodi7MAMQ
Last edited by Mr. Clean; 12-10-2014 at 03:18 PM.
At The Back Of The Pack
Arm chair racerAt the back of the pack
The 86 carrier is wider. How will the 85 bearings line up with the axle ? Hmm, I may have to go to my shop and check this. 85 carrier...narrow. 86 carrier wider and thicker....interesting how the axles will interchange...hmm. Maybe i need to go look. I really dont see how its possible.
Shart Guard .......Use it !
Pink Powerwheels Barbie trike
Wamo Big Wheel with a solid trikecycle front tire
Mini bike 3hp Briggs and Stratton with cambells soup can exhaust
Schwinn stingray with coaster brakes
1985 Crash and Burn champ
1st place National Endo Championship
First Time Rider
Arm chair racerNew to the board
Would I beable to find the 86 bolts I need at a hardware store? Im sure they will have them but I'm wondering if they need to be a certain grade so I don't shear them off. I ask cause my 85 sprocket carrier threads are stripped. So I need the bolts long enough to get a nut on. Anybody got a length of the factory ones for me?
Side-hilling son of a gun
Got the holeshot
I have sets of 86 OEM hardware. PM me and I can get a set of four bolts and nuts in the mail Friday from surprise AZ.
First Time Rider
Arm chair racerNew to the board
What if I use coned washers? Could some from a hardware store work?
Wires, Hoses, & Digital Wizardry.
Got the holeshot
The '85 sprocket hub had threaded bolt holes for the sprocket mounting bolts, but since yours are stripped, I honestly don't know if you'll have room between the sprocket hub and carrier to put nuts on the bolts. The nuts might end up hitting on the carrier. If the nuts won't hit on anything, that would be your easiest fix. If the nuts will hit, I would try drilling out, and re-tapping some threads into the sprocket hub, and mount the sprocket without nuts, like it was designed to be.
Also, I believe the '86-89 sprocket mounting bolts are larger in diameter than the '85's, so even if you have the '86 hardware, they won't work with an '85 sprocket hub.
Last edited by Red Rider; 12-11-2014 at 05:57 AM. Reason: Sometimes you feel like a nut. Sometimes you don't.
Red Rider's Sand Machine Updated 07/23/14
First Time Rider
Arm chair racerNew to the board
The nuts will clear. I've had them on there for as long as I can remember. If I taped it for the 86 hardware would there be enough material left on the hub to handle the stress?
Wires, Hoses, & Digital Wizardry.
Got the holeshot
It's hard to tell. I don't have an '85 axle to look at, but looking at ebay axle pics, and comparing the two axles, the '85 hub doesn't look as beefy around the sprocket mounting holes as the '86. Since you know the nuts clear, I'd go that route as it's your easiest fix.
Red Rider's Sand Machine Updated 07/23/14
At The Back Of The Pack
Arm chair racerAt the back of the pack
Why is it you can run a trx 250r axle on a 86 but cant on an 85........their not the same. Thats why. So Mike and red rider, whats your take on that?
Shart Guard .......Use it !
Pink Powerwheels Barbie trike
Wamo Big Wheel with a solid trikecycle front tire
Mini bike 3hp Briggs and Stratton with cambells soup can exhaust
Schwinn stingray with coaster brakes
1985 Crash and Burn champ
1st place National Endo Championship
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