planning a F4i fork swap. - Wrist Twisters
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post #1 of 87 Old 08-30-2011, 11:09 AM Thread Starter
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planning a F4i fork swap.

I am picking up a set of '02 f4i forks to swap onto my '02 919. I have searched around and found lots of great info about using F4i forks on the 919 and the only real downside I see is that you can't reuse the 919's front fender.

I plan on breaking the forks down and swapping new oil and springs. Since I will have the forks broken down I want to mod the f4i forks to accept the 919 front fender. I have 2 different options in mind.....

Option #1.
- switch the F4i fork bottoms for a set of '06 919 fork bottoms. Not sure if they are a direct swap or not? I have a full set '06 forks with bent tubes to salvage any pieces off of that might be required.

Option#2.
- have the tabs welded on to the F4i forks to accept the 919 fender.

I am hoping option #1 will work. Since I have the tools and parts on hand already.

Any input or advice is appreciated.

Thanks,
Ian

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post #2 of 87 Old 08-30-2011, 11:25 AM
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ya your not going to be able to switch the bottoms, they are completly different internally... and the F4i bottoms have the one main factor for swapping to them... the compression adjustment lies in the bottoms.

in all honesty just go with an F4i fender... it will cost much less than having stuff rewelded.

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post #3 of 87 Old 08-30-2011, 11:34 AM Thread Starter
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Thanks for the info. I forgot about the compression adjustment. I will just go with the 2nd option and get them welded. I should be able to get them TIG'd for beer money at work. I may go with a modded F4i fender if it comes down to that.

I also have a question about spring choice? Do I just add the extra weight of the 9'er onto my weight when ordering f4i springs? I don't want to confuse the spring company with to much extra info.

Ian

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post #4 of 87 Old 08-30-2011, 12:43 PM
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hmm... not sure that would make sense though.

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post #5 of 87 Old 08-30-2011, 04:37 PM
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Quote:
Originally Posted by HeliMech View Post
Thanks for the info. I forgot about the compression adjustment. I will just go with the 2nd option and get them welded. I should be able to get them TIG'd for beer money at work. I may go with a modded F4i fender if it comes down to that.

I also have a question about spring choice? Do I just add the extra weight of the 9'er onto my weight when ordering f4i springs? I don't want to confuse the spring company with to much extra info.

Ian
PM 'd you details and feel free to post it if you want.

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post #6 of 87 Old 08-30-2011, 04:53 PM Thread Starter
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Thanks man, great info!!!

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post #7 of 87 Old 08-30-2011, 05:20 PM
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Quote:
Originally Posted by HeliMech View Post
I will just go with the 2nd option and get them welded. I should be able to get them TIG'd for beer money at work. I may go with a modded F4i fender if it comes down to that.



Ian
I've not done mine yet, fitted my modded F4i forks that is, and am pretty sure that all that's needed to mount the 919 fender, is new forward mounting tabs.
The F4i rear tabs for fender mounting are supposed to be OK as is. The F4i used low mount front tabs, while the 919 uses hi mounts. The 919 fender should sit a little lower, or so I recollect from eyeballing of things during the winter. I've seen pictures of 919 fenders on F4i forks, so I know it can be done. zaq123 had a good fix for the sinful looks of the F4i fender, but I still like the 919 better and am sticking to it.

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post #8 of 87 Old 08-30-2011, 08:41 PM
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Quote:
Originally Posted by nd4spdbh View Post
ya your not going to be able to switch the bottoms, they are completly different internally.
Very very correct, and proven by physically examining and comparing.
You can not swap F4i lowers over to 919 tubes and cartridges.
Too bad, as my idea was to buy bent F4i forks super cheap, and just use the lowers.
The experiment was inexpensive.

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post #9 of 87 Old 09-11-2011, 10:53 PM
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I did the f4i swap, and just bolted only 2 rear fork mounts to my existing 919 fender. You have to shim the inside of the front with 2-3 layers of double sided sticky tape, but it leverages nicely. as long as the back bolts are pretty tight the fender is mounted pretty solid.

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post #10 of 87 Old 09-12-2011, 07:11 AM
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Quote:
Originally Posted by the_shindogg View Post
I did the f4i swap, and just bolted only 2 rear fork mounts to my existing 919 fender. You have to shim the inside of the front with 2-3 layers of double sided sticky tape, but it leverages nicely. as long as the back bolts are pretty tight the fender is mounted pretty solid.
This is not a 140 mph solution.
I dread to think of the consequences of the fender pivoting upwards in the middle of a top end blast.
If someone does not want to weld or has no such access, a strap can be formed from strip steel or aluminum to tie the hi 919 front fender mount to the low front F4i mount.

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post #11 of 87 Old 06-30-2012, 02:25 PM Thread Starter
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Alright finally got this done today. Fresh seals/bushings and oil, Race-tech .095 springs, powdercoated fork lowers and some custom stainless steel fender brackets. Now onto the back & install my shiny new/used 420 progressive rear shock and set everything up. So excited to have some adjust-ability on the old '02!

I also picked up a second set of gently tweaked F4i forks today, had to replace one of my fork caps from a little PO mishap. Will be dismantling these dampers and looking into re-valving, like we talked about in another thread.

If anyone needs some Fender mounting brackets let me know, I can make these pretty easily and they look pretty clean if I do say so myself.





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post #12 of 87 Old 06-30-2012, 02:29 PM
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Nice! The fender brackets do look good!

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post #13 of 87 Old 06-30-2012, 02:36 PM Thread Starter
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Thanks! They are .032" aircraft grade stainless steel, very strong and should outlast the rest of the bike.

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post #14 of 87 Old 06-30-2012, 02:55 PM
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Great job Ian!

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post #15 of 87 Old 06-30-2012, 04:49 PM
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I WANT THE FENDER BRACKETS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!


lol. seriously! Make me a set. I'd LOVE to finally be able to mount up my 919 fender onto my f4i forks. Let me know how much it'll cost. Thanks!

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post #16 of 87 Old 06-30-2012, 05:02 PM Thread Starter
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PM sent......lol.

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post #17 of 87 Old 06-30-2012, 05:02 PM
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GROUP BUY! I'm in with PVster if you do make em!

*edit: If its cost effective on INTL shipping, you can ship them to me and I'll ship him his.

My classified(s):
Nothing at the moment

----------------
------------
---------
------
---
- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #18 of 87 Old 06-30-2012, 05:19 PM
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Quote:
Originally Posted by andrewebay1 View Post
GROUP BUY! I'm in with PVster if you do make em!

*edit: If its cost effective on INTL shipping, you can ship them to me and I'll ship him his.
As long as the brackets don't say "Ohlins" I think I can trust Andrew....

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post #19 of 87 Old 06-30-2012, 05:23 PM Thread Starter
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Nah if they said "ohlins" i would have to charge $200 for them, and gear up for a lawsuit. Brackets will be $25 shipped anywhere in canada or the lower 48. Let me try and replicate a few sets, then I will post up a FS:Thread.

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post #20 of 87 Old 06-30-2012, 05:24 PM Thread Starter
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Quote:
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GROUP BUY! I'm in with PVster if you do make em!

*edit: If its cost effective on INTL shipping, you can ship them to me and I'll ship him his.
I can do that, they should be pretty cheap to ship. Let me look into it and get back to u guys.......jesus u guys are fast!

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post #21 of 87 Old 06-30-2012, 05:25 PM
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PVster wants his in pink. If not, magenta or lilac

My classified(s):
Nothing at the moment

----------------
------------
---------
------
---
- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #22 of 87 Old 06-30-2012, 05:28 PM Thread Starter
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I was just going to stamp the word "queer" on them. I can do Lilac.....

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post #23 of 87 Old 06-30-2012, 05:44 PM
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Quote:
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I was just going to stamp the word "queer" on them. I can do Lilac.....
You mistook us, Andrew wants "queer" stamped onto his. Lilac works for me

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post #24 of 87 Old 06-30-2012, 06:01 PM Thread Starter
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Actually I should just take PV's and leave them out in the rain for a week, then throw them in some mud. That way they will match his bike perfectly!

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post #25 of 87 Old 06-30-2012, 06:24 PM
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Quote:
Originally Posted by HeliMech View Post
Actually I should just take PV's and leave them out in the rain for a week, then throw them in some mud. That way they will match his bike perfectly!
Paint it a different shade of black than what I currently have on the 919 (at least 4) while you're at it, thanks!

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post #26 of 87 Old 06-30-2012, 08:26 PM
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Quote:
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Actually I should just take PV's and leave them out in the rain for a week, then throw them in some mud. That way they will match his bike perfectly!
Heyyyy that would match my bike perfecT!!

My classified(s):
Nothing at the moment

----------------
------------
---------
------
---
- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #27 of 87 Old 06-30-2012, 09:16 PM
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Actually, just wrap PVster's in a condom. Then they'll feel right at home

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post #28 of 87 Old 06-30-2012, 09:20 PM
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Quote:
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Actually, just wrap PVster's in a condom. Then they'll feel right at home
NO MEANS NO!

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post #29 of 87 Old 07-02-2012, 08:02 PM
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Quote:
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Actually, just wrap PVster's in a condom. Then they'll feel right at home
Do we really have to keep reliving this condom bike thing?

:buell:
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post #30 of 87 Old 07-09-2012, 03:58 PM
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Quote:
Originally Posted by HeliMech View Post
Nah if they said "ohlins" i would have to charge $200 for them, and gear up for a lawsuit. Brackets will be $25 shipped anywhere in canada or the lower 48. Let me try and replicate a few sets, then I will post up a FS:Thread.
BTT: How them brackets coming?

My classified(s):
Nothing at the moment

----------------
------------
---------
------
---
- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #31 of 87 Old 07-09-2012, 04:05 PM
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Quote:
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BTT: How them brackets coming?
+1

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post #32 of 87 Old 07-09-2012, 05:23 PM Thread Starter
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Got the stainless bent up. Just need to file them down a bit and pick up the attachment holes. Should be ready by weeks end. PM's sent.

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post #33 of 87 Old 07-09-2012, 05:34 PM
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Sweeeet, PMed back

My classified(s):
Nothing at the moment

----------------
------------
---------
------
---
- '96 Race-retired GSXR 750 (Sold)
- '01 RC51 SP1 (Sold)
- '03 919

"Security is mostly a superstition, it does not exist in nature: avoiding danger in the long run is no safer than outright being exposed. Life is either a daring adventure or nothing."-Helen Keller
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post #34 of 87 Old 07-09-2012, 07:01 PM
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Quote:
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Sweeeet, PMed back
Ditto!

Where the heck is Mcromo?! Thought he'd be all over this

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post #35 of 87 Old 07-09-2012, 07:08 PM Thread Starter
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Quote:
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Ditto!

Where the heck is Mcromo?! Thought he'd be all over this
I don't know? I pm'd him about it and never heard back.

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post #36 of 87 Old 07-10-2012, 10:55 AM
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Quote:
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I don't know? I pm'd him about it and never heard back.
That particular PM must not have got to me.
Anyway, I'm going for welded on tabs instead.
I only got out for my first ride on Sunday.
I need to get off my butt and get the F4i swap done, seeing the internals work was done last year !
I just need to fab up the tabs, get them welded on, fit the super trik only set in the world 20 mm extended fork caps, and change my internal preload to 10 mm from 14 re the now 0.95 spring set. (was 0.925)

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post #37 of 87 Old 07-10-2012, 10:57 AM
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Screw that mcromo, just get a set of brackets and save the tab welding for next winter!

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post #38 of 87 Old 07-10-2012, 11:30 AM Thread Starter
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I am making you a set anyway & sending them in the mail......deal with it. :-P

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post #39 of 87 Old 07-10-2012, 12:19 PM
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Hilarious !!!
I'm feeling luved and appreciated - whatever for I don't know.

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post #40 of 87 Old 07-10-2012, 12:30 PM
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Smile

Quote:
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I am making you a set anyway & sending them in the mail......deal with it. :-P
I missed saying Thanks !!!!!
Gosh, I won't have any excuses left .............

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