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Old 08-25-2013, 06:20 PM   #706
marguyo
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Quote:
Originally Posted by MrBracket View Post
Marguyo,

I like your trailer and your bike! Nice work!

I played around with the angle of the hitch pivot quite a bit when building my first couple trailers.



I'm betting you'll find that your trailer feels more comfortable in the corners if you tilt the hitch pivot forward about 10 deg.

That air bag spring is nice, I bet that makes it easy to adjust your spring rate for different loads, very nice!

Great looking setup!
thanks! reel thank you ! i change my coupling this winter
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Old 08-29-2013, 05:10 PM   #707
r80rt
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We got back to the TW200 trailer project today, the swing arm is built and mounted to the trailer, still waiting on a new tire. I hope to have the tongue and hitch arms built tomorrow, with any luck I'll pull it home Saturday.



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Old 08-29-2013, 08:30 PM   #708
Salsa
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Quote:
Originally Posted by MrBracket View Post
Marguyo,

I like your trailer and your bike! Nice work!

I played around with the angle of the hitch pivot quite a bit when building my first couple trailers.



I'm betting you'll find that your trailer feels more comfortable in the corners if you tilt the hitch pivot forward about 10 deg.

That air bag spring is nice, I bet that makes it easy to adjust your spring rate for different loads, very nice!

Great looking setup!

What is the theory behind the 10 degrees or why SHOULD it be better?

Don
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Old 08-30-2013, 03:59 AM   #709
Not the Messiah
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Salsa,

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What is the theory behind the 10 degrees or why SHOULD it be better?
In a turn, with the bike (and trailer) leaned over AND the trailer at an angle to the bike (ie "trailing" into the corner) the front triangle of the hitch must move upward slightly to let this all happen. It's all about the geometry of the pivots. Anyway, tilting the pivot forward exagerates this upward movement of the hitch. I'm guessing a bit now, but I suspect that this stops the trailer "dropping" or "falling" into the corner and dragging the bike into more lean - by holding the trailer up it let's the bike feel more neutral.

I hope this makes sense. I tried to sketch it out but my tech drawing skills have left me...
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Old 08-30-2013, 05:13 PM   #710
r80rt
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Today's progress on the TDub trailer. Here is the swing arm and shock finished. The shock from the front of the scooter was to soft so we used the one from the rear, it's much better.

A nearly done hitch made from 1 1/2 strap steel, the off set in the swing arm caused us a bit of extra head scratching, but we got it.

A test fit of the hitch. Anything that moves has a bushing and a grease zerk, I like things to be smooth. I got my new trailer tire in the mail today finally!. It may be a few days before we can finish it, but there ain't a lot left to do.

It's a little hard to see in this picture but the hitch pin leans forward 10 degrees, it's supposed to make them track better, I hope it does cause it was a pain in the neck to get right.

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Old 09-01-2013, 07:01 PM   #711
r80rt
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Almost done


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Old 09-01-2013, 07:15 PM   #712
Curtis in Texas
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Looks good! Have you calculated the lean angle in turns your going to be able to do before the front corner of the trailer strikes the ground?

Making a leaning turn into a driveway up a curb will tell if you've got enough clearance. If not, you'll figure it out real quick once you pick yourself off the ground.

I like the scooter wheel idea. I"m trying to figure out how to make one work on mine so I can add a brake on the trailer into the mix.
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Old 09-01-2013, 11:18 PM   #713
Lizrdbrth
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Almost done
Very secksee.
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Old 09-01-2013, 11:20 PM   #714
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nice~
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Old 09-02-2013, 05:13 AM   #715
r80rt
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Quote:
Originally Posted by Curtis in Texas View Post
Looks good! Have you calculated the lean angle in turns your going to be able to do before the front corner of the trailer strikes the ground?

Making a leaning turn into a driveway up a curb will tell if you've got enough clearance. If not, you'll figure it out real quick once you pick yourself off the ground.

I like the scooter wheel idea. I"m trying to figure out how to make one work on mine so I can add a brake on the trailer into the mix.
Well if we've done everything right, I should have plenty of clearence, I'll find out today. If there are any problems I'll cut the front corners off at a 45 degree angle.
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Old 09-02-2013, 05:16 AM   #716
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Sitting here on a picnic table enjoying the sunrise while Dirt Flirt reads a book. First time camping off the bikes is awesome! Trailer performed very well. Got the shocks all sorted out with some oil for damping and internal springs. Still get a slight swaying above 55mph but we're sticking to back roads and gravel on this trip anyway. I think I'm getting some flex near the steering head and already have plans how to stiffen it up.

Packed a good size tent, air mattress, blankets, cold beverages with ice in the insulated scooter bags, tools, food, and some other crap.










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Old 09-02-2013, 06:45 AM   #717
r80rt
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Very cool!
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Old 09-02-2013, 02:44 PM   #718
r80rt
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Exclusive spy shot of the fat boy's first test ride of the trailer, it still needs to be disassembled and painted but it pulls like a dream and handles great, I'm big happy to say OldBrattrider has built me one hell of a trailer. I'll post finished shots as soon as the paint dries.



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Old 09-02-2013, 06:25 PM   #719
r80rt
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Got it painted, but it got dark on me so the pic's aren't great.
http://www.youtube.com/watch?v=cvDm1o65Dw0



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Old 09-02-2013, 08:17 PM   #720
mwilliamshs
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r80rt...

what are those saddlebags?
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