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Old 12-04-2010, 11:36 AM   #5551
dcstrom
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Quote:
Originally Posted by llamapacker View Post
It was the rear wheel, post #156 on Wasp's thread. He said he was running 22 in the rear and would recommend 30 maybe. He runs 40 on the road.
Oh well, either way, I don't think it demonstrates any particular weakness of these wheels. Given the same conditions, a lot of wheels would have suffered the same fate - or maybe worse.

As well as Wasp, the guys that did the trip to Angola reported some loose spokes - so that's probably the main thing to keep an eye on.

Trevor
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Old 12-04-2010, 11:55 AM   #5552
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Break-in method?

Quote:
Originally Posted by Olirider View Post
During the first 10 000 km, I did not have to add any oil !
Which break-in method did you use?
comment avez-vous rodee votre ST?

Merci.
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Old 12-04-2010, 12:17 PM   #5553
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Quote:
Originally Posted by DockingPilot View Post
The rear wheel however looks like a single centered fix point offering no outboard support to the wheel and may be the reason why Wasp tweaked his rear rim in fairly short order. ?? Now, I know the 1200gs and know what it is and is not, but the wheels on it are in my opinion a masterpiece and probably the best thing on the bike.
I don't know where you got that misconception from, a crossspoked wheel is so incredibly easy to Warp, i've got 6 lyibg around,en two on my bike...

A centre spoked wheel is stronger, way stronger.

In a centre spoked whel you ride a dent in the flange, but it stays round and more importantly *centered*, a crossspoked gets a dent in its flange, the spokes there loose their tension,and the complete wheel comes out of alighnment,not only giving it a vertical warp, but within a few hundred a lateral warp too.


Look at Trail bikes, riding with almost no air in it, al centre spoked, to keep it *alighned* however great the abuse may come...

A spoke does not give any push stability,a wheel gets it strenght from spoke *tension* a dent in the flange loosens the attached spoke completely.
and... overloading the rest, there are cases known of crosspoked wheels collapsing because 7 or more spokes suddenly snapped :-(
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Old 12-04-2010, 12:25 PM   #5554
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I never said I knew what I was talking about regarding the wheel R3B thats why I asked.
Loose the tude dude, if thats what I detect, I had no conceptions. I just ride em., I dont design em, nor pretend to.
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Old 12-04-2010, 12:38 PM   #5555
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He just asked for discussion, that is all. No telling what Wasp hit, but it got him home and caused no drama.

Myself, I will not try to go the places that I have no reservations going on the WRR, but it is nice to know the limits.

I have made some big hits on the little WRR with no visual effects, lower weight bike (300 lbs) different tires, more suspension. I will ride differently on the big S10 for sure.
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Old 12-04-2010, 12:52 PM   #5556
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Quote:
Originally Posted by R3B View Post
I don't know where you got that misconception from, a crossspoked wheel is so incredibly easy to Warp, i've got 6 lyibg around,en two on my bike...

A centre spoked wheel is stronger, way stronger.

In a centre spoked whel you ride a dent in the flange, but it stays round and more importantly *centered*, a crossspoked gets a dent in its flange, the spokes there loose their tension,and the complete wheel comes out of alighnment,not only giving it a vertical warp, but within a few hundred a lateral warp too.


Look at Trail bikes, riding with almost no air in it, al centre spoked, to keep it *alighned* however great the abuse may come...

A spoke does not give any push stability,a wheel gets it strenght from spoke *tension* a dent in the flange loosens the attached spoke completely.
and... overloading the rest, there are cases known of crosspoked wheels collapsing because 7 or more spokes suddenly snapped :-(
My two cents on this conversation:


What wheel will be stronger, if same material is used?

One where the width of the rim is wider? Or narrower?

1. __!__ Wider rim (looking in profile)

2. _!_ Narrower rim (looking in profile)

The assumption for bending wheels of the F800GS was that it was too wide a rim for the weight of the motorcycle, allowing it to use lower profile front tires. So the edges of the rim were prone to bending when tires were somewhat deflated. That was the case of number 1 above. Many folks have changed the F800GS rims to a narrower and hence more solid rim for dirt riding, and hence successfully avoiding bending rims.

Of course, strong materials and rim profile shapes and angles, and other creative designs can help with adding strength.

BMW 1200GS spoked wheels distribute the spoke areas of action by locating them at two points on the profile, hence reducing unprotected areas of the rim

3. _!__!_

It is one way of handling the distribution of forces and at the same time allowing for tubeless tires.


Yamaha S10 wheels are also a clever format, by a reinforced ridge at the center which probably expands spoke action to beyond its traditional area (front and rear wheels are different but similar approach here generalized).

4. __!!__

Both are clever formats. If one is better than the other, it may not be by too great a margin (I say this based on common sense but with lack of actual expertise, so please correct me if I'm wrong).

But I do think the BMW cross spoked wheels look better. And that, R3B, is not a question of you knowing more than I do. It is a question of personal taste.

But since I carry and Italian passport, I may actually know a couple of things more about design, than a Dutch guy will ever do. Just kidding R3B!
Here is to you
hoping you have a sense of humor...

Lion
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Old 12-04-2010, 01:12 PM   #5557
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Yea, I guess to the uneducated eye, like mine, the BMW tubeless wire wheels look nuke proof compared to the S10. But looks can be and I guess are decieving.
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Old 12-04-2010, 01:46 PM   #5558
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Originally Posted by DockingPilot View Post
Yea, I guess to the uneducated eye, like mine, the BMW tubeless wire wheels look nuke proof compared to the S10. But looks can be and I guess are decieving.
I would bet (a dollar) on the BMW wheels as stronger than the S10 as well. Even if it is by a slight margin.
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Old 12-04-2010, 01:51 PM   #5559
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Well this year I did a 2,800 mile offroad trip with my F800. Also we had a 950 Super Enduro and believe it or not a 1200 Adventure ridden in very capable hands. He never bent a rim, but guess who did.

Dam rutted out cattle guard, hit it at about 65mph !
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Old 12-04-2010, 02:03 PM   #5560
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Originally Posted by DockingPilot View Post
Well this year I did a 2,800 mile offroad trip with my F800. Also we had a 950 Super Enduro and believe it or not a 1200 Adventure ridden in very capable hands. He never bent a rim, but guess who did.

Dam rutted out cattle guard, hit it at about 65mph !
They can be dangerous... I hit this one at 40+mph



I was riding at 60+mph when I saw it, slowed some down as I always do when these things show up, but forgot this one had the bump... until it was too late to do anything about it but let the bike do its thing.







No bent rims (30psi) on little WRR
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Old 12-04-2010, 02:12 PM   #5561
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Old 12-04-2010, 02:16 PM   #5562
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Quote:
Originally Posted by DockingPilot View Post
Indeed. Can you imagine what would have happened were I riding one of these big beasts...

Here is the front suspension travel as a result of that little bump

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Old 12-04-2010, 02:36 PM   #5563
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That little bike is pretty much a big reason why I choose the S10. We have been through some fun stuff!
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Old 12-04-2010, 04:02 PM   #5564
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That little bike is pretty much a big reason why I choose the S10. We have been through some fun stuff!
Yes, that little Yamaha is quite a nice bike.
Are you keeping the MTS?
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Old 12-04-2010, 04:27 PM   #5565
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Quote:
Originally Posted by Olirider View Post
During the first 10 000 km, I did not have to add any oil !
Me neither, it was on the dot when i brought it in for first service, although i did not look exactly how mucht it was over when i got it, so it could have been over filled as a precaution.

Knowing a looking glass being appr. liter, he could have consumed at most.
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