Bitingdog
Does your Dog bite?
A 640 hub fits your bike, your Excel rim fits your bike. So what you need are spokes and labor. If you're handy, you can do the work yourself. If not, figure a hundred or two for a pro to do it
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KTM SMR 450 - Fun Commuter Times.
- Thread starter java230
- Start date
These are the bolts that caught my eye. I guess your sprocket mounts to that flange that then bolts to the hub via these bolts? Sprocket adapter for an aftermarket/universal hub maybe?
Some aftermarket cush hubs have small urethane dampers so I thought you might have something similar. Not this exactly, but something along these lines.
SUPERLITE Polyurethane / Titanium Cush Drives for MV Agusta 750 - 5 Piece Set
25% less weight than OEM units!!! Unlike the stock rubber cush drives, these new Superlite Polyurethane Cush Drive inserts are engineered to provide smoother power transfer during hard acceleration & improved overall feel. Fits all single side swing-arm 2000-2005 MV Agusta 750 models.
sprocketcenter.com
300man
Well-known member
That is not a standard KTM dirt bike hub but not sure exactly what it is?
Next time the bike is on a stand check for up/down play in the swing arm. Just put your fingers through the spokes and grab the top of the rear wheel and try to move it up and down. If there is any free play then it is most likely your bottom shock bearing or heim joint/bearing. You can replace these yourself with basic tools. Or by a motion Pro tool made to remove/instal them.
Read up or watch a video on the removal/installation before attempting it yourself. I can write a detailed explanation for you if you'd like. Basically the bearing is a press fit and you need to take care not to booger up the aluminum swing arm. Use a heat gun to heat the swing arm near the bearing. Freeze the new bearing before pressing it in.
Enjoy!
Next time the bike is on a stand check for up/down play in the swing arm. Just put your fingers through the spokes and grab the top of the rear wheel and try to move it up and down. If there is any free play then it is most likely your bottom shock bearing or heim joint/bearing. You can replace these yourself with basic tools. Or by a motion Pro tool made to remove/instal them.
Read up or watch a video on the removal/installation before attempting it yourself. I can write a detailed explanation for you if you'd like. Basically the bearing is a press fit and you need to take care not to booger up the aluminum swing arm. Use a heat gun to heat the swing arm near the bearing. Freeze the new bearing before pressing it in.
Enjoy!
java230
Well-known member
These are the bolts that caught my eye. I guess your sprocket mounts to that flange that then bolts to the hub via these bolts? Sprocket adapter for an aftermarket/universal hub maybe?
Some aftermarket cush hubs have small urethane dampers so I thought you might have something similar. Not this exactly, but something along these lines.
SUPERLITE Polyurethane / Titanium Cush Drives for MV Agusta 750 - 5 Piece Set
25% less weight than OEM units!!! Unlike the stock rubber cush drives, these new Superlite Polyurethane Cush Drive inserts are engineered to provide smoother power transfer during hard acceleration & improved overall feel. Fits all single side swing-arm 2000-2005 MV Agusta 750 models.sprocketcenter.com
Yes, it seems to be an adapter between the hub and sprocket. I wonder if anyone makes the adapter as a crush adapter?
It is an Excel hub as well. Its an aftermarket wheel set. I did not notice any play when I was looking at the hub. But I will check again more closely.
java230
Well-known member
A little commuter mod. Aubframe is stripped on one side.... I'll see if I can tap it larger and use a different bolt
java230
Well-known member
Well I have a few hundred miles on this thing now. Its a great commuter. Light and fun, with just enough power. Its loud though! Got the speedo working, and it seems to stay cool in traffic (not so much the operator....)
Got the mount for the rack fixed. Perfect for my mini brief case that holds my computer and some flip flops.
I am noticing a bit of surging under mid throttle and light load, say 3-3500 rpms, and you just go uphill a little, nothing bad, but I can feel the power come and go a bit. Carb cleaning? I know it sat for a couple years before I got it.
Got the mount for the rack fixed. Perfect for my mini brief case that holds my computer and some flip flops.
I am noticing a bit of surging under mid throttle and light load, say 3-3500 rpms, and you just go uphill a little, nothing bad, but I can feel the power come and go a bit. Carb cleaning? I know it sat for a couple years before I got it.
1Sinner
Member
Java, what tires and sizes are you running on that thing? Also, how big is that rear rack? I like the look..... going to do something similar with my 530exc
java230
Well-known member
No idea 🤣 I'll check when I'm home. That's a wide angle that makes the front look massive
java230
Well-known member
150/70 17 rear 120/70 17 front
Rack is 7.5w x 8.5 long. Perfect for my little mini brief case.
Rack is 7.5w x 8.5 long. Perfect for my little mini brief case.
1Sinner
Member
What brand and model tire are they?150/70 17 rear 120/70 17 front
Rack is 7.5w x 8.5 long. Perfect for my little mini brief case.
java230
Well-known member
Shinko E-705 trail master. I didn't pick them, but so far so good.
1Sinner
Member
Thanks Java
Bitingdog
Does your Dog bite?
Jetting sounds like. A bit lean will give some surging.Well I have a few hundred miles on this thing now. Its a great commuter. Light and fun, with just enough power. Its loud though! Got the speedo working, and it seems to stay cool in traffic (not so much the operator....)
Got the mount for the rack fixed. Perfect for my mini brief case that holds my computer and some flip flops.
I am noticing a bit of surging under mid throttle and light load, say 3-3500 rpms, and you just go uphill a little, nothing bad, but I can feel the power come and go a bit. Carb cleaning? I know it sat for a couple years before I got it.
KTM Talk should have the info you seek