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Author Topic: 8 degree TT  (Read 1646 times)
BigEagle
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VRCC #10725

Mission, BC, Canada


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« on: May 16, 2010, 09:14:09 AM »

I'm gonna order my triple tree from Daryl tomorrow. Before I do, i'm looking for feedback on why everyone prefers the 6 degree over the 8. Comments???
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Black Dog
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VRCC # 7111

Merton Wisconsin 53029


« Reply #1 on: May 16, 2010, 11:06:49 AM »

Seriously, if you have questions, ask him...  He makes them, and knows the differences cooldude

He's a great guy to talk to also...  Here is his # (four one four) 517-9546.

BVlack Dog
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BigEagle
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Posts: 65


VRCC #10725

Mission, BC, Canada


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« Reply #2 on: May 16, 2010, 12:04:22 PM »

Seriously, if you have questions, ask him...  He makes them, and knows the differences cooldude

He's a great guy to talk to also...  Here is his # (four one four) 517-9546.

BVlack Dog

I'll be talking to him tomorrow when I place the order. I'm fishin for comments from someone other than the seller.
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John Schmidt
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a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #3 on: May 16, 2010, 12:20:47 PM »

The six deg. cuts down the trail quite a bit and makes the bike handle and feel lighter. An 8 degree set would cut down the trail even more. I just installed the 6 and was amazed at the difference. It turns a lot quicker, not squirrely or anything, just much lighter at the touch. The less trail you have, the more you will feel that. The 8 would look cool but I'm not sure you'd want it on anything other than a trike. Here's my ride with the 6 installed before I remounted the fairing. The 8 deg. rake would kick the front wheel out even more.
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BigEagle
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VRCC #10725

Mission, BC, Canada


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« Reply #4 on: May 16, 2010, 01:44:38 PM »

Anybody know anybody with the 8 degree triple tree on thier Valk?
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John Schmidt
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a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #5 on: May 16, 2010, 04:38:12 PM »

Anybody know anybody with the 8 degree triple tree on thier Valk?
Not offhand, Daryl may know of someone. Keep in mind, the caster angle(rake) on the Tourer and Std. is something like 32 degrees(actually a fraction over) with a 6" trail. With the six degree rake, you now have a 38+ degree rake with a trail of about 4". With an 8 degree rake, that brings the rake to 40+ degrees and cuts the trail to less than 4". You need some decent trail for stability and help prevent front end wobble, especially the scary stuff at higher speeds. Nothing like a tank slapper to ruin your day. Little or no trail lessens stability on most bikes.

Strangely enough, you can take a frame such as our Valk and cut it behind the neck and increase the rake substantially and maintain the same trail as with the uncut version. Reason being...you're not changing the relationship between the neck angle and the front wheel. You can start with the 6" trail, modify the frame as mentioned by kicking it out to 40 degrees, and still have a 6" trail. That would give you a very stable bike with a high cool factor, but by changing the rake with the triple trees you're not only changing the rake but also lessening the trail. An entirely different approach to raking, very effective but has its limits.
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BigEagle
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VRCC #10725

Mission, BC, Canada


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« Reply #6 on: May 16, 2010, 06:32:21 PM »

AWESOME feedback, John! Very informative! I would have responded sooner, but I'm still at work. (I love my iPhone). Okay, so the 8 degree TT isn't really my best choice for adding some "cool factor". The 6 degree would be the better all around choice, with some improved slow speed handling and a little "cool factor" to boot.  Cool. 
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John Schmidt
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a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #7 on: May 16, 2010, 07:17:56 PM »

AWESOME feedback, John! Very informative! I would have responded sooner, but I'm still at work. (I love my iPhone). Okay, so the 8 degree TT isn't really my best choice for adding some "cool factor". The 6 degree would be the better all around choice, with some improved slow speed handling and a little "cool factor" to boot.  Cool. 
I would say that's the better choice. Do you understand the definition of trail? In a simplified manner: draw a line down through the center of the steering stem to a point on the ground(it will be at an angle somewhat following the forks), then draw a second vertical line down through the front axle to a point on the ground. That second point will fall behind the first point, i.e., the term "trail." The second point "trails" the first. That's why with a rake developed with the triple trees, the first angle/point stays the same because the steering stem hasn't changed position. But with the raked trees, the second point has changed by moving closer(forward) to the first point, thereby reducing the trail. Clear as mud?  Wink 
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BigEagle
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VRCC #10725

Mission, BC, Canada


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« Reply #8 on: May 16, 2010, 09:56:43 PM »

Actually, that was pretty clear.  Thanks.
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BigEagle
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VRCC #10725

Mission, BC, Canada


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« Reply #9 on: May 18, 2010, 10:09:03 AM »

Man, am I glad I had a talk with Daryl! Stock shocks have to be replaced with shorter ones and the brake lines, speedo and throttle cables all have to be replaced with longer sets. We're talking double the coin I thought it would be. Luckily, it's gonna take about a month for him to run another batch of triple trees, so I've got time to scrape up the rest of the funds.
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