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Old 03-18-2012, 07:00 PM   #1
simitar OP
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Velorex 562

Hello,

Can someone tell me what the wheel lead should be on a velorex 562 attached to a DR650 using DMC subframe? Also, what should the measurement be from center of rear motorcycle tire to center of sidecar tire.

Thanks
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Old 03-18-2012, 07:30 PM   #2
BeeMaa
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Might want to call Jay at DMC Sidecars about this.
I'm sure he has a good answer for you.
Good luck with it.
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Old 03-19-2012, 08:40 AM   #3
jaydmc
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10-15% of the wheel base of the bike is a good starting point. If you are going to be more off road then move it closer to the 15%
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Old 03-20-2012, 10:42 AM   #4
ADW
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15% or 10% for 50/50 usage?

Quote:
Originally Posted by jaydmc View Post
10-15% of the wheel base of the bike is a good starting point. If you are going to be more off road then move it closer to the 15%
Jay G
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866-638-1793
Jay, would you recommend the same 15% if probably 50% of the time would be on gravel roads/2tracks, or is the 15% recommendation only for purely "off-road" (i.e. trail type) stuff.

I've just ordered a Velorex-to-KLR650 subframe from you and anticipate my wife and I using the rig quite a bit on gravel roads, forest roads, or 2-track around the country. So wondering if I should set up my rig closer to the 15% when your frame arrives or to put it more toward 10% since we'll be on pavement a fair amount too.

Thx.
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Old 03-20-2012, 11:32 AM   #5
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Quote:
Originally Posted by ADW View Post
Jay, would you recommend the same 15% if probably 50% of the time would be on gravel roads/2tracks, or is the 15% recommendation only for purely "off-road" (i.e. trail type) stuff.

I've just ordered a Velorex-to-KLR650 subframe from you and anticipate my wife and I using the rig quite a bit on gravel roads, forest roads, or 2-track around the country. So wondering if I should set up my rig closer to the 15% when your frame arrives or to put it more toward 10% since we'll be on pavement a fair amount too.

Thx.
it's not rocket science and it is subjective (read that as"pretty much what you like when you ride it is good enough". More wheel lead equals more stability and less nose dive turning left but also more steering effort tire wear and fuel consumption.

Riding on pavement with good traction and higher speeds will accentuate these effects. Riding on surfaces with less traction and riding at lower speeds can negate much of these effects. So good gravel roads can still be comfortable with greater wheel lead, but you might not like it so much on pavement.

Deep ruts, rocks and logs such as you might find on primitive roads and actual off road makes it more important to prevent nose dive and so the maximum wheel lead you can enjoy riding is advisable.

You can also control nose dive by stiffening the sidecar suspension or using a swaybar(though you may find clearance and handling problems with a swaybar on very rough, uneven surfaces).

You can reduce steering effort but not necessarily fuel consumption or tire wear with reduced trail on the moto front end.

So Jay's 10-15% lead is pretty much up to you.If you ride 50/50 or more pavement I'd split the difference. It is fussy to change but pick a number that seems right, set it up and ride it. You can change it if you need to.

With a KLR I recommend you stiffen the front and rear suspension on the bike, use raising links at the back and find something much stiffer for the Velorex shock & spring
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Old 03-20-2012, 12:23 PM   #6
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Good info, thanks!

Thanks, RedMenace. Good solid info for me to "chew" on. I intend to stiffen both ends of the bike. Will work on the Velorex shock/spring as we see it becomes necessary. Should be able to do enough "test riding" with the rig this summer to see what sort of improvements we'll want/need.
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Old 03-20-2012, 05:36 PM   #7
simitar OP
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Velorex 562

Quote:
Originally Posted by RedMenace View Post
it's not rocket science and it is subjective (read that as"pretty much what you like when you ride it is good enough". More wheel lead equals more stability and less nose dive turning left but also more steering effort tire wear and fuel consumption.

Riding on pavement with good traction and higher speeds will accentuate these effects. Riding on surfaces with less traction and riding at lower speeds can negate much of these effects. So good gravel roads can still be comfortable with greater wheel lead, but you might not like it so much on pavement.

Deep ruts, rocks and logs such as you might find on primitive roads and actual off road makes it more important to prevent nose dive and so the maximum wheel lead you can enjoy riding is advisable.

You can also control nose dive by stiffening the sidecar suspension or using a swaybar(though you may find clearance and handling problems with a swaybar on very rough, uneven surfaces).

You can reduce steering effort but not necessarily fuel consumption or tire wear with reduced trail on the moto front end.

So Jay's 10-15% lead is pretty much up to you.If you ride 50/50 or more pavement I'd split the difference. It is fussy to change but pick a number that seems right, set it up and ride it. You can change it if you need to.

With a KLR I recommend you stiffen the front and rear suspension on the bike, use raising links at the back and find something much stiffer for the Velorex shock & spring


Hello,
I am going to ride 90% on blacktop and 10% on gravel roads. I have installed stiffer springs in front and back of motorcycle. Also installed an upgraded swing arm and a new shock from a 1200 sportster on the sidecar. With this in mind, it appears I need to be closer to 10% for wheel lead? Also, what is the ideal track width measurement with the information above?
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