USD forks on a 919 - project near done - Wrist Twisters
 
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post #1 of 37 Old 01-15-2007, 04:03 PM Thread Starter
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USD forks on a 919 - project near done

I didn't want to post these pictures in the picture thread yet because I think it will spark a lot of conversation. I don't have time to talk about the details right now, but I will, I promise. In summary, I am very happy with the results, but it probably wasn't worth the time and the MONEY. It was very expensive, but once I started I couldn't stop. I say the project is near done because there are tweaks I will make here and there, I am never "done". But, it's totally ridable right now and techincally I don't have to do anything else. Enjoy!
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post #2 of 37 Old 01-15-2007, 04:39 PM
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Sweet ride....fork envy here!

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post #3 of 37 Old 01-15-2007, 04:51 PM
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Looks sweet bro, congrats on new mod.

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post #4 of 37 Old 01-15-2007, 05:34 PM
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Cool. Looking forward to the details.

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post #5 of 37 Old 01-15-2007, 05:48 PM
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Wow, yes details, details, and what front headlight is that, seems I seen it somewhere. nice job!! Looks sweet, str8

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post #6 of 37 Old 01-15-2007, 05:49 PM
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Looking good.

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post #7 of 37 Old 01-15-2007, 05:58 PM
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Quote:
Originally Posted by tpirman View Post
I didn't want to post these pictures in the picture thread yet because I think it will spark a lot of conversation. I don't have time to talk about the details right now, but I will, I promise. In summary, I am very happy with the results, but it probably wasn't worth the time and the MONEY. It was very expensive, but once I started I couldn't stop. I say the project is near done because there are tweaks I will make here and there, I am never "done". But, it's totally ridable right now and techincally I don't have to do anything else. Enjoy!
Is that a CBR 929 RR front end? Are they interchangable?

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post #8 of 37 Old 01-16-2007, 05:42 AM
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That is the best looking 9er for sure. How well does that headlight work?

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post #9 of 37 Old 01-16-2007, 06:03 AM
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steering geometry?

What are the dimensional changes to the stock steering geometry?

Rake: 25.0°
Trail: 98 mm (3.9 inches)
Wheelbase: 57.5 inches

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post #10 of 37 Old 01-16-2007, 07:21 AM
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i am also interested in info about your new headlight. i can't tell from the pics, but were you able to retain your stock gauges. the end result, forks and all, look amazing. good work. more on the head lamp please. and pics from the riders position if you have em'.

thanks,

mark

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post #11 of 37 Old 01-16-2007, 09:03 AM
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post #12 of 37 Old 01-16-2007, 09:07 AM
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That lady looks great with thicker legs.

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post #13 of 37 Old 01-16-2007, 02:22 PM
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Those look like 91-95 Kawasaki ZX7r forks.

They could be from a 93-97 ZX9r or ZX6r but definitely Kawasaki with the 2 pots calipers..

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post #14 of 37 Old 01-16-2007, 04:43 PM
 
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the front light is an acerbis blitz...

i was wondering how well that light works? is it bright enough to ride at night?

PS. bike looks great... love the black cans too

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post #15 of 37 Old 01-16-2007, 05:00 PM
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Originally Posted by farmerjoe View Post
Those look like 91-95 Kawasaki ZX7r forks.

They could be from a 93-97 ZX9r or ZX6r but definitely Kawasaki with the 2 pots calipers..
I think those are fiddy-one bits. tpirman? confirm or deny?

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post #16 of 37 Old 01-16-2007, 05:45 PM Thread Starter
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The forks are from a 96 zx9r. They are pretty easy to find right now. When I started the project my requirement was to not change the geometry for the worse. I didn't want handling to get worse just for some USD forks. This particular model of fork is plenty long to meet the needs, and the offset for the triples was very close to the stock 919. So, rake and trail have not been changed.

The light is an Acerbiz Blitz, yes. Not sure if it's bright enough for night, haven't been night riding yet, but from first glance I am thinking it might be a stretch. I have heard that you can put higher wattage bulbs in which should help the matter. That's on my list of to-dos.

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post #17 of 37 Old 01-16-2007, 06:58 PM Thread Starter
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Oh yeah, 4manhilt/mark, I don't have the stock gauges on there anymore, but I've seen people get that front light to fit with them. But, In My Opinion, I don't think it looks as good. These lights only look good when flat against the forks.

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post #18 of 37 Old 01-16-2007, 07:00 PM
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The forks are from a 96 zx9r.
DOH! I should have recognized those instantly. Same generation ZX9 as my bro's bike.

Good hardware to go with, BTW. The ZX9 has great handling, even if it is more of a sport-tourer than a road scalpel. Those forks should be nicely matched with the 919 since they're on a lighter bike and they already have very little dive. i bet it's a hoot to ride!

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post #19 of 37 Old 01-16-2007, 10:55 PM
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Quote:
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... I am very happy with the results, but it probably wasn't worth the time and the MONEY. ...Enjoy!
Well, for me, I can say your effort has been well worth my time and money, and I fully expect you to continue as though you were spending my money.

It is damn cool! I noticed the Front wheel is a pretty close match. Looks to have slightly different shaped spokes. I'm thinking you should paint the wheel a matching color like the OEM paint on the rear. Both in gloss black would work too. Is there a Kawasaki wheel for the rear maybe? I really want custom wheels for mine. Nothing is more bad assed then custom wheels on whatever your the vehicle... Anyway..

More pictures of your crap tho, would be cool. High res if ya got 'em.


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post #20 of 37 Old 01-17-2007, 07:45 AM
 
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Quote:
Originally Posted by tpirman View Post

The light is an Acerbiz Blitz, yes. Not sure if it's bright enough for night, haven't been night riding yet, but from first glance I am thinking it might be a stretch. I have heard that you can put higher wattage bulbs in which should help the matter. That's on my list of to-dos.
yeah 50w i think is what you can upgrade to... keep me posted on how it works out for ya

ive been looking into that light for another one of my bikes, but wasnt sure how it would work out at night... even though honestly most of my night riding is in the city or on the freeway, where, even if i turned off my light, id still be able to see

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post #21 of 37 Old 01-17-2007, 09:04 AM
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Cool

Great looking bike...I have the acerbis light on my bike and the light is not the greatest but good enough for city riding. I had it with the clocks on(in the pic) but since I have removed them.
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post #22 of 37 Old 01-17-2007, 11:50 AM
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Hey tpirman,
It looks like you are going with the whole Kawi front end. Wheel, caliper, fender and forks. Am I right? Are you using the stock triple clamps? Are these 43mm forks? Very nice work by the way.

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post #23 of 37 Old 01-17-2007, 01:20 PM
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Can't wait to hear the details on this one...sick bike.

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post #24 of 37 Old 01-17-2007, 01:44 PM
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Looks amazing! Can't wait to see it with all the 'tweaks' done!!
I have a bunch of parts collected for a similar project (RC51 forks w/954 front wheel), I'm just waiting for some $$$ to get a clamp made so I can get started on mine.
Love that front headlight you got - hopefully a different bulb works for you.
Keep us posted with pics. Would love to heard the technical details when you get the time.

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post #25 of 37 Old 01-18-2007, 07:25 AM
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Bike looks sweet tpirman!

It may have cost lotsa $ but you sure did an awesome job. And think of it this way - despite the cost, you've got one helluva unique 919 there! Looking forward to hearing more about how it handles compared to the stock forks.

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post #26 of 37 Old 08-17-2007, 10:21 AM Thread Starter
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Here's a more recent pic, will post more later when I am done tweaking stuff. This is just a new set of forks I found, already tricked out. And the allow me to use the 6 pot calipers.
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post #27 of 37 Old 08-17-2007, 12:12 PM Thread Starter
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Here are some more newer pics. I am quite happy with the result so far. I have a marvic wheel for the front but I need to get the bearings pressed out and all that good stuff so that is on hold. I just wanted to get the bike to where I could keep riding it, weather is great here!
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File Type: jpg IMG_1609.jpg (159.4 KB, 179 views)
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post #28 of 37 Old 08-17-2007, 12:36 PM
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Looks awesome! That black tail section looks great.

Again, what's holding it all together? Custom triple trees?

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post #29 of 37 Old 08-17-2007, 01:57 PM
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Quote:
Originally Posted by tpirman View Post
Here are some more newer pics. I am quite happy with the result so far. I have a marvic wheel for the front but I need to get the bearings pressed out and all that good stuff so that is on hold. I just wanted to get the bike to where I could keep riding it, weather is great here!
I was on a roadtrip from LA with my daughter to the Bay Area last week. That was the first time I've experienced the sun shining (no fog) from Southern California to just north of the Golden Gate Bridge (Muir Woods). Beautiful weather. I got a kick of the bikes in San Francisco. Girls riding Ducs, older VRFs and CBRs converted to naked bikes, a 919 with USD forks etc. etc.

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post #30 of 37 Old 08-17-2007, 01:59 PM
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I approve.


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post #31 of 37 Old 08-17-2007, 02:00 PM
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Quote:
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I was on a roadtrip from LA with my daughter to the Bay Area last week. That was the first time I've experienced the sun shining (no fog) from Southern California to just north of the Golden Gate Bridge (Muir Woods). Beautiful weather. I got a kick of the bikes in San Francisco. Girls riding Ducs, older VRFs and CBRs converted to naked bikes, a 919 with USD forks etc. etc.

San Francisco is awsome, I wish I could afford to live there. Golden Gate Park is great. Just a great city overall, there's no two ways about it.

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post #32 of 37 Old 08-17-2007, 02:09 PM
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It got voted America's Best City for Motorcycles on Cycleworld

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post #33 of 37 Old 08-17-2007, 04:02 PM Thread Starter
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SF really is a great city, though expensive. It can get pretty foggy but today is perfect, really nice and clear and the perfect temp. Fall is the best time around here.

The 94-96 zx9 frontend is held together with a botton zx9 triple with a custom steering stem pressed in. The top triple is direct from LSL, a very nice piece. I just happened to have enough room to put some clip-ons on top because the forks are so much longer than the 919 forks, which is why we picked them.

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post #34 of 37 Old 08-17-2007, 06:17 PM
 
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That's a great looking bike.

In fact, it looks so good and is getting such a good response that I'm predicting that we'll see a USD fork on the stock niner in a few years.

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post #35 of 37 Old 08-20-2007, 06:23 PM
 
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The 900 ninja was under rated. I have recommended them recently to a few friends but they all seem to think they need a new Gixxer 1000 for a first bike.

That is an incredible job you have done. I think that looks like the next 919 should be. It also looks like a complete finished bike not just a new part ,great work. I think a big aluminium racing radiator would look great.

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post #36 of 37 Old 08-20-2007, 09:51 PM
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custom steering stem? damn, you aren't kidding that it was a lot of work!

anyways, sweet bike, definitely one of my favorite 919's. I also notice you switched out your tail section for a black one.

Wish there was an easy way to do the USD fork conversion!

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post #37 of 37 Old 09-20-2007, 08:34 PM
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Hello Gents,

Here's a picture of the steering stem, steering stop, and lower triple clamp mods on tpirman's bike: http://www.moto-lab.com/gallery/view?itemid=176. Scroll down for links to blueprints. Click again for a highres view (if available).

Regards,

Derek

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