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FJowners.com > General Category > Modifications > Forks
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Author Topic: Forks  (Read 4149 times)
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giantkiller
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Re: Forks
« Reply #15 on: August 11, 2019, 07:26:21 AM »

Here's a couple of pics of my bikes with inverted.
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Re: Forks
« Reply #15 on: August 11, 2019, 07:26:21 AM »

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aviationfred
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Re: Forks
« Reply #16 on: August 11, 2019, 11:07:43 AM »

I did the write up for the GSX-R1000 forks, but Dan, (giantkiller) is who perfected the swap and I got a lot of guidance directly from Dan. Here is a photo that I took of Dan's incredible 1986. Plus the 2 that I have done.

Fred
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Pat Conlon
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Re: Forks
« Reply #17 on: August 11, 2019, 11:36:11 AM »

Quote from: Dieselman7.3 on August 11, 2019, 05:11:24 AM
Quote from: Pat Conlon on August 10, 2019, 03:02:52 PM
R-1 you want, R-1 you get...http://www.fjowners.com/index.php?topic=3148.0

Can the bottom mount of the fjs triple tree be safely bored out to take the forks of 50mm?


No. Going from the FJ’s oem 41mm diameter to a 50mm diameter, it’s not even close.
You will need a different lower triple. Dan’s (giantkiller) above solution addresses the upper triple.
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Dieselman7.3
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Re: Forks
« Reply #18 on: August 11, 2019, 05:55:30 PM »

Okay thanks for the input just trying to think of what’s  going to be the easiest but maintain safe functionality
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Pat Conlon
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Re: Forks
« Reply #19 on: August 12, 2019, 09:05:19 AM »

The ‘91-93 FZR1000 front end is the easiest.
The GSXR front end is the best.
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Millietant
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Re: Forks
« Reply #20 on: August 12, 2019, 01:06:22 PM »

I'm with Pat on this 100%. The FZR coversion was really simple (even making the bracket for the lock stops only took 15 minutes) and great value, and I like that fact that it's an "all Yamaha" version......BUT........

If cost and difficulty/hassle/"originality" weren't an issue, I'd go for the GSXR conversion every time, as I'm sure the end result is much better handling and ride quality.

My priorities were better (but not ultimate) handling, steering, ride quality, braking and keeping it looking like the "factory-finish" FJ that Yamaha should have built.
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Dean

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Re: Forks
« Reply #20 on: August 12, 2019, 01:06:22 PM »

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Dieselman7.3
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Re: Forks
« Reply #21 on: August 12, 2019, 05:01:09 PM »

My thoughts were to keep it yamaha but if the the gsxr swap is better might go that way. I guess price and availablity on parts will be my deciding factor. I’m not planning on doing it until winter so I have time to source everything before I tear down the bike (want to ride it until snow falls)
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CutterBill
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I hate motorcycles...


Re: Forks
« Reply #22 on: August 12, 2019, 05:25:03 PM »

I've had inverted forks on my FJ12 before. Didn't like it.

Mind you, they were still attached to the bike at the time...   
Bill
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Dieselman7.3
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Re: Forks
« Reply #23 on: August 12, 2019, 06:55:40 PM »

Quote from: CutterBill on August 12, 2019, 05:25:03 PM
I've had inverted forks on my FJ12 before. Didn't like it.

Mind you, they were still attached to the bike at the time...   
Bill

What was it you didn’t like?
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FJmonkey
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Re: Forks
« Reply #24 on: August 12, 2019, 07:01:35 PM »

I think Bill was having some fun play on words. When traditional forks are upside down, the bike is upside down.
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CutterBill
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Re: Forks
« Reply #25 on: August 12, 2019, 08:47:35 PM »

Quote from: FJmonkey on August 12, 2019, 07:01:35 PM
I think Bill was having some fun play on words. When traditional forks are upside down, the bike is upside down.

Yep. That was not a fun day. Thanks to AviationFred for helping me get that heavy lump right-side up...
Bill
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Never Slow Down, Never Grow Old.

Current Stable:                                                     
FJ1100                                              
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Dieselman7.3
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Re: Forks
« Reply #26 on: August 13, 2019, 02:50:04 AM »

Quote from: CutterBill on August 12, 2019, 08:47:35 PM
Quote from: FJmonkey on August 12, 2019, 07:01:35 PM
I think Bill was having some fun play on words. When traditional forks are upside down, the bike is upside down.

Yep. That was not a fun day. Thanks to AviationFred for helping me get that heavy lump right-side up...
Bill

Right over my head   wacko1
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Pat Conlon
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Re: Forks
« Reply #27 on: August 13, 2019, 03:03:45 AM »

Hey Bill, are you coming up to Oakdale for Randy’s shindig? 
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Please get your pneumonia vaccination and Flu shot. Do it now.
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Flynt
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Re: Forks
« Reply #28 on: August 13, 2019, 08:55:39 AM »

Quote from: Pat Conlon on August 12, 2019, 09:05:19 AM
The ‘91-93 FZR1000 front end is the easiest.
The GSXR front end is the best.

YZF750 front end looks OEM, is very adjustable, and gives you enough length on the tubes to actually fit the FJ...  I'm sure spacers and extensions are 100% safe and all, but they definitely don't look OEM.  The YZF750 USD mod is well documented, but it does require some work on the lower triple (putting FJ tube in YZF lower).  This is not the easiest route...  but it is what Pat runs ;-)... 

Frank
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Re: Forks
« Reply #29 on: August 13, 2019, 11:39:39 AM »

Yep, love my YZF750 forks.

Thanks again Frank for the tip on getting them reworked by GT Suspension. A big difference.
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Please get your pneumonia vaccination and Flu shot. Do it now.
There is no need for your body to battle a pneumococcal bacterial lung infection or the flu virus when there could be other very serious battles to fight.
Hang tight, Stay safe, Covid Vaccine’s close.
FJowners.com
Re: Forks
« Reply #29 on: August 13, 2019, 11:39:39 AM »

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