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Old 02-24-2012, 07:47 PM   #556
bgoodsoil
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Question about the frame mods: is the change in rake of the steering neck always part of what they do? I know you're dealing with language barriers, but do you know if they build bikes where they don't change the angle there?
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Old 02-24-2012, 09:24 PM   #557
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I was never sure that they ever changed the rake angle... not by cutting and welding at least. I always thought it was just the relative angle that changed, due to suspension geometry changes.

Somebody please correct me if that’s wrong.
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Old 02-25-2012, 06:19 AM   #558
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Originally Posted by igormortis View Post
I always thought it was just the relative angle that changed, due to suspension geometry changes.
Yep, I think that's it. I think the rake rumor is just something that somebody said and it got repeated a bunch of times until it became "fact."

Here they are side by side. Stock and HPNed. The HPN is obviously raked out a bit more, but I can't tell if it's just the whole frame tilted back due to the longer front end or if the steering head itself has been modified.

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Airhead Wrangler screwed with this post 02-25-2012 at 07:31 AM
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Old 03-03-2012, 09:14 AM   #559
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Originally Posted by Airhead Wrangler View Post
...(able to cut away over half like this: http://hpn.de/pdf/hpn8.pdf Also, anybody want to tell me why this engine has one of the oil cooler lines attached to the LEFT side of the block?)
They changed the oil circulation massively anyway.
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Old 03-03-2012, 09:41 AM   #560
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thanks for the info.. good to know.
Cyclops offers a H4 version of the Trail Tech that I have been eyeballing..
Anybody has a side view of this headlamp housing? Any room for situating some cabling into it?
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Old 03-03-2012, 12:39 PM   #561
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Anybody has a side view of this headlamp housing? Any room for situating some cabling into it?
AFAIK, I don't think so.

The Cyclops (in the beginning of its life at least) was a derivative of the Trailtech, with a 7" insert instead of the single filament 8" light.

Here's the link to the Trailtech site, which has some pictures of the back of the light. The halogen version doesn't appear to even have a headlight bucket. The HID one is form fitted to the reflector with no spare space.

I went with the Baja design light for that reason.
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Old 03-04-2012, 10:42 AM   #562
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Originally Posted by Box'a'bits View Post
AFAIK, I don't think so.

The Cyclops (in the beginning of its life at least) was a derivative of the Trailtech, with a 7" insert instead of the single filament 8" light.

Here's the link to the Trailtech site, which has some pictures of the back of the light. The halogen version doesn't appear to even have a headlight bucket. The HID one is form fitted to the reflector with no spare space.

I went with the Baja design light for that reason.
Thanks a lot - i'll then go for the Baja for the exact same reason. If i'll go for this "Flak floodlight" direction at all...
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Old 03-22-2012, 01:04 PM   #563
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Originally Posted by igormortis View Post
I was never sure that they ever changed the rake angle... not by cutting and welding at least. I always thought it was just the relative angle that changed, due to suspension geometry changes.

Somebody please correct me if that’s wrong.
I asked Claus Pepperl (the P of HPN) specifically if they altered the angle of the steering stem. He said they cut it off and reattach it at a .5 degree steeper angle.
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Old 03-22-2012, 01:22 PM   #564
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Originally Posted by roadsacallin View Post
I asked Claus Pepperl (the P of HPN) specifically if they altered the angle of the steering stem. He said they cut it off and reattach it at a .5 degree steeper angle.
Well there you have it.
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Old 03-22-2012, 03:27 PM   #565
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How about that. I guess 0.5 of a degree is not something you’d notice by peeping at pix on the internet.
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Old 03-22-2012, 04:23 PM   #566
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Originally Posted by Airhead Wrangler View Post
Yep, I think that's it. I think the rake rumor is just something that somebody said and it got repeated a bunch of times until it became "fact."

Here they are side by side. Stock and HPNed. The HPN is obviously raked out a bit more, but I can't tell if it's just the whole frame tilted back due to the longer front end or if the steering head itself has been modified.

Looking at this picture the angle of the steering head is different between the two bike frames. I see that was confirmed.
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Old 03-22-2012, 04:35 PM   #567
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Seems like a lot of work for a .5 degree. Any idea why they'd do that?

The reason why I'm asking is because a lot of us are looking at getting frame braces made and having them welded in locally. Of course, we won't be having steering angle changed. Any thoughts?
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Old 03-22-2012, 04:42 PM   #568
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I just don't see where they cut and rewelded in this photo. The welds attaching the plates on either side appear to be original MIG welds. The heat coloration at the top of the downtubes where they meet the steering head indicates to me that they may have loaded the frame in a jig and bent the steering head back and then heated these spots to relieve the elastic stresses and keep it permanently bent. Half a degree isn't much.
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Old 03-22-2012, 04:56 PM   #569
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Yeah AW, for me that particular picture has always been the strongest evidence that they don’t cut and re-weld. Who knows? Maybe it’s only for certain frames.

I guess HPN never discussed it with you?
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Old 03-23-2012, 12:47 AM   #570
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I always thought that they added an extra plate to those side plates, ie put another plate over or under the original and welded the edges together. It seems that the stresses on these plates is extension force. The forces on the steering stem is trying to tear the plates in half
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