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Old 07-03-2015, 07:22 PM   #1
Mohawk Badger OP
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Rig pulling right but only on hills.

I have a VStrom-650 and a Hannigan dual-sport hack. It is pretty neutral in steering pulling a bit to the right and left on acceleration and deceleration but on the flat or downhill straights it is neutral.

However going up a hill I get a very strong pull to the right (toward the hack). How strong? Today I went up a moderate hill that was about a mile and a half long and felt like I had wrestled a bear when I was done.

Any thoughts? Thanks.
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Old 07-03-2015, 08:57 PM   #2
DRONE
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I have no idea. Can't wait to hear what the cognoscenti have to say. My only wild-assed guess is a weak spring on the rear shock gets compressed going uphill which lightens the weight on the front wheel and makes it harder to hold the line? A total WAG.
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Old 07-03-2015, 09:02 PM   #3
claude
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Does your sidecar have ECC on it?
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Old Yesterday, 06:09 AM   #4
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Yess ECC

Yes it has ECC and I have fooled around with it a bit. If it makes a difference on the hills it is very slight.
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Old Yesterday, 06:11 AM   #5
SwampFox883R
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Quote:
Originally Posted by Mohawk Badger View Post
I have a VStrom-650 and a Hannigan dual-sport hack. It is pretty neutral in steering pulling a bit to the right and left on acceleration and deceleration but on the flat or downhill straights it is neutral.

However going up a hill I get a very strong pull to the right (toward the hack). How strong? Today I went up a moderate hill that was about a mile and a half long and felt like I had wrestled a bear when I was done.

Any thoughts? Thanks.
I'm thinking the long up hill run was simply a long, constant acceleration as you had to be "on the throttle" the entire 1-1/2 miles.
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Old Yesterday, 06:45 AM   #6
claude
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Originally Posted by Mohawk Badger View Post
Yes it has ECC and I have fooled around with it a bit. If it makes a difference on the hills it is very slight.
There will always be variations with hills etc but no drastic.

Typically we will set them up with the ECC almost all the way down. Set static lean out and it is good to go. More adjustment 'up' with the ECC should make a difference. In most cases will anyone nee dto lower the sidecar. This is why we do this. There are exceptions of course nut in most cases this is how we do it.
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claude screwed with this post Yesterday at 06:50 AM
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Old Yesterday, 08:08 AM   #7
Crilly
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This is normal. Going up a hill with a sidecar is like accelerating with a sidecar. It well pull more right. Also, going down a steep hill is like braking. It well pull to the left. This assumes the bike is set up right and the road is flat.
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Old Yesterday, 08:14 AM   #8
GreaseMonkey
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If it is getting progressively worse (instead of it has always been there) check the swing arm and rear bearings on the motorcycle.
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Old Yesterday, 08:27 AM   #9
claude
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Quote:
Originally Posted by Crilly View Post
This is normal. Going up a hill with a sidecar is like accelerating with a sidecar. It well pull more right. Also, going down a steep hill is like braking. It well pull to the left. This assumes the bike is set up right and the road is flat.

Yes although if the rig has a sidecar brake it may pull left or right under braking. All outfits are not the same. Using front and rar brakes and practice is the key here. :-)
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Old Yesterday, 08:29 AM   #10
claude
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Quote:
Originally Posted by GreaseMonkey View Post
If it is getting progressively worse (instead of it has always been there) check the swing arm and rear bearings on the motorcycle.
Good point and also check for a leaky tire.
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