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Author Topic: Front end rudux. Opinions needed.  (Read 1697 times)
Jarvicious
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« on: December 30, 2010, 08:06:19 PM »

So here's the set list for the Duc this winter.

-1 countershaft sprocket
gauges lowered below the triple
2.5 inch rise Woodcraft clipons (can't say enough about these beautiful things)
custom headlight mount
light exhaust work
raise rear end slightly (maybe .5 inch)
CRG bar end mirrors

The countershaft was easy (still waiting for my chain adjustment tool) and I just haven't gotten to taking the rear apart to get at the ride height adjuster, so the front end is under the knife now.  My shop loves Woodcraft products and basically plugs them whenever he has the chance.  Check out one of the recent issues of "Roadracing World", there's a pretty legit article on the company.  They weren't cheap, but by god are they worth every penny.  Gorgeous stuff.

Ok, so I just spent the last 10 minutes looking for the damn pic of the clipons I took before they got put on the bike and I'm coming up with nothing.  On to the good stuff. 

My first plan was just to have Taftonomos lower the headlight bracket and gauges, but since the bike's up on the stand anyway and being recently single I'm bored out of my mind, I've decided to try my hand at building my own fork-mounted headlight brackets and simply mounting the gauges directly to the bottom of the triple and getting rid of the u-bracket entirely.  During some random interweb escapade I remember finding a set of 4 50mm cnc headlight mounting brackets that looked like they could provide a pretty nice looking alternative to the stock mounting system.Apparently I was drunk at the time because I can't find them anymore. 

Regardless, I got a wild creative hair up my ass and got to making my own.  Most of the local metal suppliers stock was waaaay to thick for my meager power tools to handle.  So.  50mm in inches is 2.041 which is pretty close (in my mind) to the 2" stock they use for building exhausts.  One trip to the local shop an a free piece of leftover 16 inch 2" stock later, I start cutting shit up.

I figure the bucket can't weight more than a few pounds so some low gauge steel and a steel trellis design should hold up nicely to the rigors of the road.  My welding skills are average at best, but I can definitly put down a strong weld which can then be ground down into something that looks presentable.  Here's some looks at the mock up clamps.










The clipons are secured right at the ride height I'm going to mount them permanently at.  I put on the triple temporarily just to get the spacing.  Here's some stuff with the bracket at bucket mounted.  I think I'm going to go for 1" down and .5" back (if free space allows).  The tiny problem I'm having is whether just to mount two brackets in the 50mm part of the fork tube, and then just angle the frame down a touch (my preference, I think) or to somehow fab up a ring to go around the lower, larger portion of the fork leg (a little closer to the lower triple) and make something a little more spread out.  Either way, I'm using steel rod stock to weld up a trellis style frame of some sort (not quite to the sketching stage, which may be why I'm having such problems with the ideation) I'm just kinda undecided on what the general shape of the bracket should be.  Again, these pics are the stock location of the headlight bucket.  Imagine the mounting point down and back a touch.  I'm also kind of torn on where to mount the actual bucket frame.  I thought about bending it so that it angles towards the steering head like the stock brackets do vs. making the bracket straight back from the headlight bucket to the fork rings (it's hard to see, but the mounting points would be pretty much right in the middle of the fork tubes).  I'm sure I'll probably wuss out when the actual fabrication starts, but I'm feeling ambitious for now Smiley







Sorry about the image quality.  Pictures are via cell phone and the contrast adjustment is mediocre at best.

I know you cats are FULL of unsolicited advice about most things Ducati, so having actually asked for it I'm curious what you think.
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brix821
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« Reply #1 on: December 30, 2010, 10:03:39 PM »

Looks great... like a robot cat  waytogo
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« Reply #2 on: December 30, 2010, 10:23:26 PM »

Looks great!

If you decide that making your own clamps isn't gonna work try these, they might be something along the lines of what you found before.
http://www.bellissimoto.com/CNCRacingMisc.html
(Bottom of the page)


waytogo
« Last Edit: December 30, 2010, 10:38:14 PM by duc750 » Logged

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« Reply #3 on: December 30, 2010, 10:34:13 PM »

A fork mounted bracket will easily hold the headlight.






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« Reply #4 on: December 31, 2010, 07:50:37 AM »

Looks great!

If you decide that making your own clamps isn't gonna work try these, they might be something along the lines of what you found before.
http://www.bellissimoto.com/CNCRacingMisc.html
(Bottom of the page)


waytogo


I figured someone on here would know what I was talking about Smiley  Yep, those are the ones.  if the clamp thing doesn't work out (i.e.- in a frustrated rage I end up lighting my bike on fire while it's still on the stand) I'll be picking those puppies up. 

Until then though, I'm gonna try and power through it.  The more I look at it, the more I think I'm going to keep the clamps right where they are (just below the clipons) and try and build the frame from there.
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« Reply #5 on: December 31, 2010, 09:35:14 AM »

or these brackets?
http://www.streetfightersinc.com/Headlightkits.htm




might stick out a little far.
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« Reply #6 on: December 31, 2010, 09:43:03 AM »

or these brackets?
http://www.streetfightersinc.com/Headlightkits.htm




might stick out a little far.
i wish i had gone with these instead of the ones I did. these are much tighter to the bike than mine.
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xcaptainxbloodx
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« Reply #7 on: December 31, 2010, 10:29:56 AM »

I still love these

I used my stock ears and cut about 1/2" off the front, re drilled and powdercoated. about a buck a piece and when everythings together nobody with any sense gives a shit.

 I always thought those LSL brackets looked way overbuilt.
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Jarvicious
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« Reply #8 on: December 31, 2010, 05:26:21 PM »

They are pretty, yeah.  But not $200 pretty.  All said and done, I'll have my clip ons, headlight brackets, and gauge brackets for under $200.  Plus the angle on those is usually kinda off (i.e. perpendicular to the fork legs) so they keep the headlight bucket up a bit higher than I think I want it. 

I would have tried to finish the clamps tonight but I keep forgetting it's NYE and every damn place is closed. 
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« Reply #9 on: January 08, 2011, 07:35:46 PM »

Well, I finally got around to designing/fabricating the headlight brackets and seeing as how this is the most welding and designing I've done in my life, it went well. Up until the end, that is.  I had a good idea of where I wanted the headlight to be, I just had to get to cutting a grinding and make it happen. The first bracket wasn't too much of a hassle, mostly because I was just flying by the seat of my pants. Once I figured out where I wanted the headlight bolts to be located, the rest was just cutting and tacking. No, I didn't tack weld the stuff while it was on my bike








Yeah, that's totally a zip strip. I found that as long as you're just doing second long tack welds it doesn't effect the plastic and they're really efficient at holding shit right where you want it.



I wanted the bracket to mimic the frame of my bike. I think it turned out pretty snazzy.


 
4:30's not too early to drink is it? Time for some New Belgium.



Last weekend it was Ranger.

 
Once the first bracket was built and approved by QA, I got to building the second. I figured if I found some way to suspend the end ring at the exact point I wanted it and make sure the ring clamps were set at the proper distances, it would go together well. I was right.

 





 

I'll save you the gory details between the first and last pictures, but just so there's some entertainment value: I definitely welded the bottom bracket right to that damn exhaust pipe. You can kinda see it in the above pic. Lesson learned.  I started getting really proficient at welding just towards the end of the second bracket.  I'm taking it to a guy on the local boards tomorrow who's got a nice TIG setup, so hopefully we'll get some decent looking joints out of the deal.

 
Dirty was helping the whole time. How else would you go about holding up your drop light?  Backwards


 

On to the final mockup, as well as the part where about ripped off the brackets and pounded them into smithereens. The clamps went on fine, after a couple of weld breakages (hey, it's a mock up) and I then proceeded to fit the clipons and the gauges. Since I did away with the U-bracket that previously held up the whole front end, I had to devise a way to mount the pod cluster to the top triple. Nothing a few washers and some plumming gaskets can't solve.




Note the slash cut washer on the left. I wanted the gauges to have a different angle in relation to the triple. It ended up better than I had planned though and I may even make the angle a little steeper just to even out the gauges. The hole in the plastic was substantially bigger than the bolt I used, so the only thing the gauges actually touch is rubber. No damping issues there.

 
The first thing I realized once I got the bucket set into place, is that it is waaaaaaay too close to the steering head and the big ass wad of electronics. I guess when I mocked up the location before I started building it, I didn't allow enough forward space between the headlight and the wiring. Shit. I mean, it's waaaaay too snug. I did get it put together, but it's really not ridable the way it is. A few thousand miles of that bucket rubbing on the wiring and I'd have all sorts of issues. Whatever. After a days effort I decided to put it together anyway.  The clipons are two piece so that you can fit them without removing the upper triple. Do yourself a favor and just slide them on from the top.  After the bucket got bolted on, everything went smoothly. I don't have any controls or electronics hooked up, obviously, but you can see the general effect.

 

Before













I couldn't get a good front pic because of the room lighting.  You can see how far down the headlight is though.



I'd like to get a new triple eventually, but motor and suspension mods come first. My next options are to either find a smaller, thinner headlight bucket or just to modify the brackets somehow to extend them farther towards the front of the bike. Hell, I don't know. After 10 hours in the garage, it's time for some whiskey and Star Wars.

 

Jarv out.
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« Reply #10 on: January 08, 2011, 09:38:46 PM »

Nicely done.  waytogo

I'm in the middle of a similar front-end rebuild, along with a superbike fork and wheel swap, on my Sport 1000. Pulled the top triple for machining today.

As I was reading through your post, the only "suggestion" that came to mind was "I'd move it out farther so he can drop everything more and/or leave a LITTLE bit of space behind the gauges." Which you pretty much figgered out when you bolted everything back together. Are you going to re-jigger? Or just make do?

Either way, it looks great, mang.  chug

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