May 26th, 2014, 08:39 PM | #1 |
ninjette.org member
Name: Shane
Location: San Diego
Join Date: Jun 2012 Motorcycle(s): None Yet Posts: 134
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TWF Racing Cartridges.
Ok so I pulled the trigger since no one else was willing to send their forks over to Zoran. I gave him my front end and I got back a set of GSXR cartridges with custom milled GSXR styled looking fork caps:
I'm spending my off season of racing touring with the CVMA Road Crew so I got my forks back just in time for the WERA West round at Autoclub Speedway. I'd never raced there and my last track day was 5 years ago on my speed triple. I didn't want to pay $250 for the track day before the race so I only got two 4 lap practice sessions before we started racing. My left fork does compression now and my right does rebound. I didn't get much practice but AP Moto was there to help me make any changes needed and after only a single turn to add some rebound, they worked great. The forks worked phenomenally. I had fantastic feel, no excessive dive under braking and the front tire felt planted. I was even able to make mid-corner line corrections without feeling like the front was going to tuck. I was able to grab a 1st and two 2nd place spots out of my 3 races. I got the bike down into the :49s with a best of 49.33 in the last race and had some great battles with the FLAP boys. If you're looking to upgrade your forks, TWF now has everything they need to give you turn key cartridges. Alternatively, you can contact AP Moto and Andy will be more than happy to set you up with some Andreani's for your ninja Great day of racing and a great way to test out the new setup. I love my new forks. BIG Thanks to AP Motoarts for the race team support and help in the pits. |
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May 26th, 2014, 09:31 PM | #2 |
RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
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Nice! How much it set you back? You reused your old springs?
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May 27th, 2014, 06:10 AM | #3 |
Fighting Texas Aggie '05
Name: Neil
Location: Hutto, TX
Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.
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that is very cool, and very cool to have another option. the Andreani carts are like what $700 or so plus install? I would imagine the suzuki carts would be a reasonable option at say $500 installed or under.
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May 27th, 2014, 09:03 AM | #4 |
ninjette.org member
Name: Shane
Location: San Diego
Join Date: Jun 2012 Motorcycle(s): None Yet Posts: 134
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I'm not 100% sure what he will be charging for the new product. I recommend giving him a call if you're seriously thinking about trying a set.
Zoran Vujasinovic (775) 786-4881 |
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May 27th, 2014, 09:38 AM | #5 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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how does that compare to the racetech emulators?
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May 27th, 2014, 10:39 AM | #6 |
ninjette.org member
Name: Kyle
Location: Portland, Oregon
Join Date: Sep 2013 Motorcycle(s): 2008 Ninja 250R Posts: 106
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Any links for those of us who want to read more about this?
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May 27th, 2014, 11:28 AM | #7 |
Fighting Texas Aggie '05
Name: Neil
Location: Hutto, TX
Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.
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FYI racetech emulators do just that, "emulate" the function of a cartridge fork. They do this by removing the damper rod ability to resist fluid flow through the compression orifices and then place shim with adjustable pretension over the hole in the top of the damper rod.
This allows the shim to be adjusted in the nature in which it allows fluid to flow through the tube during the stroke. The upside is cost, ability to retrofit to damper rod forks, somewhat separation of compression and rebound. Compression with shim, rebound with fluid through orifice still. A true cartridge has shim stacks for both rebound and compression and you can then tune these shim stacks to behave in almost exactly the way that you want. In addition the adjusters are mounted externally to allow for quick adjustment (emulators must me removed and oil changed for rebound). These take an existing cartridge and modify it for use in the ninjette housings. One leg compression one leg rebound since there no lower adjustment capability in the lower for leg outers.
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Keep it rubber side down and enjoy the ride Get healthy - Get Fit - Change Your Life Click Here Or PM Me To Find More - Advocare |
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May 27th, 2014, 02:56 PM | #8 |
ninjette.org member
Name: Shane
Location: San Diego
Join Date: Jun 2012 Motorcycle(s): None Yet Posts: 134
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I had emulators and springs in the forks before. I played with geometry on the bike a little and tried to balance out the feel front to back considering I had a built JRi Shock in the rear. I have the bike sitting tall for more ground clearance.
Racing at Chuckwalla the front end was good and gave good feedback. The change to cartridges has been substantial though. The forks "feel" thicker or more solid. The front tire give me a lot more feedback. The front end feels more stable under trail braking and is rock solid when transitioning from upright to full lean. There is a hand-off between the suspension and the chassis when the bike goes to full lean and that transition can be a little unsettling when your suspension isn't dialed. You can ride around it no problem but the luxury of having no issue at all is very nice. I am planning to race at Buttonwillow in a few weeks so I will keep you posted on how it does on a rough track. For the cost cutting effect the Emulators are still a good choice. If you're already at the front of the pack in a race and tenths matter, I would consider going with the cartridges. If you're just cruising around town or you're practicing on a track day, they are not mandatory. Really it's just about finding any possible advantage when you're fighting for a 1st place, which I'm always trying for at CVMA or anywhere else I land. P.S. I had my front forks showing only 8mm above the triple clamp and my rear has been raised a lot. I have ride height adjustment in the back so if you have a GSXR shock thing and run the cartridges you will have to figure out your geometry first before you can benefit from a better front end. Zoran has extended my forks +5mm now so I've slid my forks up to have 13mm showing, which I believe is the stock height. Keep in mind, though, the tail is higher. I will post up my geometry setup when I get the bike back if anyone wants to know the height of my rear. Let me know if anyone cares about such a thing and I will post it. |
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May 27th, 2014, 03:12 PM | #10 | |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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Quote:
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May 27th, 2014, 03:44 PM | #11 | |
wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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Quote:
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May 27th, 2014, 05:20 PM | #12 |
Fighting Texas Aggie '05
Name: Neil
Location: Hutto, TX
Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.
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very cool, would be interested in knowing price. I am not in the market any time soon so I don't want to bother someone for the sake of my curiosity. someone buy some and let me know lol
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Keep it rubber side down and enjoy the ride Get healthy - Get Fit - Change Your Life Click Here Or PM Me To Find More - Advocare |
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May 27th, 2014, 05:40 PM | #13 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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got a link?
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June 3rd, 2014, 03:12 PM | #14 |
ninjette.org sage
Name: Matt
Location: San Diego, CA
Join Date: May 2012 Motorcycle(s): 2007 Triumph Bonneville; 2008 Ninja 250r (trackbike) Posts: 748
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So what fork oil and weight are you running now with that setup? What's your air gap?
I know with Dean's cartridges he runs 2.5W (IIRC)
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