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Buell Motorcycle Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through April 10, 2006 » Will the D616's work better with less air off road? « Previous Next »

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Cygnus_x1
Posted on Tuesday, March 21, 2006 - 01:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just wondering, if I air down will the bike handle off roading better?
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2_spuds
Posted on Tuesday, March 21, 2006 - 02:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I haven't been offroad and don't have any intention's of going there with the uly,
but I have been on the sand roads in the pine barrens and the uly handles them like a champ.I run the front and back at around 22 psi. and it handles it great.I bought the bike for bad roads,dirt roads and sand roads and it handles them all better than anything I've ever ridden before.
The more I ride it the more I like it.
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Debueller
Posted on Tuesday, March 21, 2006 - 02:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My experence with the D616's off road is with "street" air they ride rather harsh over rough/rocky terrain.

On dirt bikes air pressure is critical. You want as little air as possible without causing tire/wheel damage. This way you get the best traction and ride quality.

I haven't played around with different tire pressures on the Uly for off-roading yet. I'm sure lower pressure would defintely improve off-road handling, comfort, and traction.

The trick would be to find a "sweet spot" that also allows for tire/wheel protection, good street manners and of course, safety. This summer when going on some true adventure rides I will experament with different combinations.

I've been checking around for a small 12V air pump that could be carried under my seat. This would allow me to air down too much and still be able to air back up.
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Debueller
Posted on Tuesday, March 21, 2006 - 02:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On my dirt bike I run about 19psi in the front and about 15psi in the rear. 22psi sounds like it might work well on the Uly. I have no intention on taking my Uly on terrain nearly as rough as I frequent on my XR650.

2 Spuds...how does that 22psi feel on the pavement?
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2_spuds
Posted on Tuesday, March 21, 2006 - 02:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Debuller, I always pump them up before I hit
the pavement.I've got a small 12 volt pump that fits under the seat and a bicycle pump as a back up.These dunlops have worked
great for me so far,3800 miles and plenty of tread left.
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Fool4buell
Posted on Tuesday, March 21, 2006 - 05:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Lower pressure *may* help a little on the 616's; the tire will have a larger contact area with the ground and may float a little higher in sand.

But I think tire pressure makes a bigger difference on dirt tire knobbies. It allows the knobs to flex and bite into the dirt.
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Windaddiction
Posted on Tuesday, March 21, 2006 - 07:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I drop 10 psi front and rear off road on mine and it worked great for me. Dont try and do mud or snow though you wont like the result
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Debueller
Posted on Wednesday, March 22, 2006 - 12:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Would using lower pressure (about 25psi) on gravel roads lessen the potental for tire punctures from sharp rocks?

The tire would have a little more "give" to it. Or would it have the opposite affect?

A heavly loaded bike with lots of torque on a steep climb with "shard" shaped gravel could test the limits of the tire's resistance to being punctured or worse, an unrepairable slice.

Any thoughts?
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Opto
Posted on Friday, March 24, 2006 - 04:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A heavly loaded bike with lots of torque on a steep climb with "shard" shaped gravel could test the limits of the tire's resistance to being punctured or worse, an unrepairable slice.

Yes.
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