Are F4i rear axles hollow and fit 919 ? - Wrist Twisters
 
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post #1 of 25 Old 11-21-2010, 05:39 PM Thread Starter
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Are F4i rear axles hollow and fit 919 ?

Some help please.
Somewhere on W/T, I'm sure I remember seeing a few times that F4i rear axles are hollow and are interchangeable with the 919 rear axle?
Does anyone out there know for sure ?
What's driving this is a search for rear axle sliders.
Plan A is for a hollow axle swap into the 919 and use a through bolted type kit.
Plan B is to face the two ends, drill and tap, and graft on some standard sliders myself.
I can't be the first one doing this, so hopefully some experience WTer will see this and pipe up.
Please advise.

By the way, I have the 919 front slider kit picked out.
GSG-Moto from TwistedThrottle.com
So, that aspect is taken care of.
And that kit will also fit the F4i front end that is going on before spring riding starts.

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post #2 of 25 Old 11-21-2010, 05:42 PM
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post #3 of 25 Old 11-21-2010, 06:03 PM
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Interesting. I've looked at front ones more as they are neat 'bling'

In reality do axle sliders do any good - I mean have you ever seen a bike that has had the axle area ground down in a crash and actually be a bike worth repairing - I'd think if those areas get stuffed the rest of the bike is that bad that it is totaled.

But I may be wrong.

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post #4 of 25 Old 11-21-2010, 06:19 PM
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F4i rear axle is hollow & otherwise identical to the 919.

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post #5 of 25 Old 11-21-2010, 07:03 PM
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Quote:
Originally Posted by AllanB View Post
Interesting. I've looked at front ones more as they are neat 'bling'

In reality do axle sliders do any good - I mean have you ever seen a bike that has had the axle area ground down in a crash and actually be a bike worth repairing - I'd think if those areas get stuffed the rest of the bike is that bad that it is totaled.

But I may be wrong.
they definitely save DRZ's and skiny bikes of the like. But i think the width of an inline 4 and the even more width of frame sliders on the 919 will leave the actual axles high and dry ( the front at least) the rear might still get scuffed and axle sliders there might help.

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post #6 of 25 Old 11-21-2010, 08:18 PM Thread Starter
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Guys & Gals, the more slider stuff you put on the less chance there is you'll ever need it !
At least that's my theory and I'm sticking to it.

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post #7 of 25 Old 11-21-2010, 08:19 PM Thread Starter
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Quote:
Originally Posted by Bryce919er View Post
F4i rear axle is hollow & otherwise identical to the 919.
Thank you very much Sir !

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post #8 of 25 Old 11-21-2010, 08:42 PM
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Quote:
Originally Posted by mcromo44 View Post
The more slider stuff you put on the less chance there is you'll ever need it.

I'd buy a T-shirt with that slogan on it!




I hear where you are coming from - even a small tip over wrecks so much on new bikes.

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post #9 of 25 Old 11-21-2010, 08:43 PM
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Quote:
Originally Posted by mcromo44 View Post
Guys & Gals, the more slider stuff you put on the less chance there is you'll ever need it !
At least that's my theory and I'm sticking to it.
definitely agreed. Goes along the lines of, you bring the tools you think you might need, you will never need them.

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post #10 of 25 Old 11-22-2010, 06:02 AM
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Ran into a guy the other day that had round black sliders on his engine cases........(the bike was a street-legal Yamaha TZR 250 2-stroke punched out to 400cc). Ended up taking a closer look and he had a hockey puck epoxyed to each engine case.

it was hard to tell they weren't factory installed.......

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post #11 of 25 Old 11-22-2010, 07:07 AM
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I don't think the rear axle on a 919 hits the deck all that often in a get-off. The rear passenger peg brackets get it first. But I suppose it can happen.

I have a hollow F4I axle on my 919. When you hold both the solid and hollow in your hand, there is a is a very noticable difference. I've never noticed a difference when on the bike, tho.

I've always wished for track stand spool threads on the 919, 599 and 929.

I do have front spools on the Super Duke. That seems like standard operating procedure on those bikes. I agree, it probably cuz it's a skinny bike.

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post #12 of 25 Old 11-22-2010, 07:37 AM
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Quote:
Originally Posted by arctic954 View Post
Ran into a guy the other day that had round black sliders on his engine cases........(the bike was a street-legal Yamaha TZR 250 2-stroke punched out to 400cc). Ended up taking a closer look and he had a hockey puck epoxyed to each engine case.

it was hard to tell they weren't factory installed.......
I've seen people use skateboard wheels also, NOT GOOD you want the bike to slide not grip and flip !

-Mark-
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post #13 of 25 Old 11-22-2010, 07:47 AM
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I'm with Sniper on this one. My only (919) crash bent my rear peg brackets, and the usual turn signals and dimple in the gas tank. I feel if the sliders stuck out farther from the axle, it may force more damage up higher to the tank area. But, it also may keep pressure off the cases????
The weight of the solid axle would have no affect on riding, except it's less unsprung weight. I know you didn't mention weight loss, but, it's always somewhere in everyone's mind about getting lighter parts. One thing I liked about the ZRX was the screw bosses for sliders.

[
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post #14 of 25 Old 11-22-2010, 07:51 AM
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Quote:
Originally Posted by AllanB View Post
I hear where you are coming from - even a small tip over wrecks so much on new bikes.
Some asshole knocked my "clean but used" 9er over in a parking lot. The tank, turn signal, handelbars, stator cover, mirror, clutch lever and tail section all got damaged. If I had some sliders doubt anything would've taken a hit but the sliders.

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post #15 of 25 Old 11-22-2010, 07:59 AM Thread Starter
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Quote:
Originally Posted by Sniper View Post
I don't think the rear axle on a 919 hits the deck all that often in a get-off. The rear passenger peg brackets get it first. But I suppose it can happen.

I have a hollow F4I axle on my 919. When you hold both the solid and hollow in your hand, there is a is a very noticable difference. I've never noticed a difference when on the bike, tho.

I've always wished for track stand spool threads on the 919, 599 and 929.

I do have front spools on the Super Duke. That seems like standard operating procedure on those bikes. I agree, it probably cuz it's a skinny bike.
I got aluminum blocks welded on to my swingarm to mount spools. It was an easy do.

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post #16 of 25 Old 11-22-2010, 01:24 PM
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Quote:
Originally Posted by brian View Post
Some asshole knocked my "clean but used" 9er over in a parking lot. The tank, turn signal, handelbars, stator cover, mirror, clutch lever and tail section all got damaged. If I had some sliders doubt anything would've taken a hit but the sliders.
I've frame sliders and a few months back a earthquake flipped my bike from the stand onto the right side in the garage

Damage from a zero speed 'fall' (all right side)
mirror
bar
Brake lever
clutch cover (scratched)
Foot peg hanger (bend inwards from passenger peg)
Scratched tail piece.
Bent brake lever


Oddly enough the Yoshis I'd mounted a couple weeks earlier were unscathed as were the turn signals.

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post #17 of 25 Old 11-22-2010, 02:00 PM Thread Starter
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Quote:
Originally Posted by AllanB View Post
I've frame sliders and a few months back a earthquake flipped my bike from the stand onto the right side in the garage

Damage from a zero speed 'fall' (all right side)
mirror
bar
Brake lever
clutch cover (scratched)
Foot peg hanger (bend inwards from passenger peg)
Scratched tail piece.
Bent brake lever


Oddly enough the Yoshis I'd mounted a couple weeks earlier were unscathed as were the turn signals.
Ah Hah !!!!
Another reason that lean stands suck !
Your only chance is with a centre stand.
A long time ago the kids were in the garage playing.
My CB750 was on the centre stand.
We had a small earthquake, you know, dishes rattling etc etc, not a structural damage level event. Anyone, Iain ran into the house and said "Daddy, your motorcycle jumped off the ground ! " Trying to be the cool Dad, and not let on my thoughts about it falling over and crushing him or his brother, I asked him "How high ? " He said "this much" and showed me about 6 - 8 inches between his hands. True story.

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post #18 of 25 Old 11-23-2010, 02:09 AM
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Did you buy the blocks or make them?


DId you unhook the battery when they were welded on?

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post #19 of 25 Old 11-23-2010, 06:21 AM
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Ya know.....I have a pitbull stand that grabs the underside of the swingarm with rubber holders......it works very well.

I suppose though if you have another bike with spools and only 1 stand.

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post #20 of 25 Old 11-23-2010, 06:41 AM Thread Starter
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Quote:
Originally Posted by Sniper View Post
Did you buy the blocks or make them?


DId you unhook the battery when they were welded on?
Made the blocks up then had them welded on. Took the swingarm off for the work, which is a very easy task. The sketch is attached.
Attached Images
File Type: jpg 919 swingarm spool blocks.jpg (108.5 KB, 14 views)

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post #21 of 25 Old 03-08-2011, 08:56 AM
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old thread --- back from the dead.

so..... did you ever end up getting the rear hollow axle? did you buy the GSG f4i front axle sliders?

So --- I know know the front 919 axle is hollow and identical to the f4i..... but does the GSG kit come with a new nut that has a hole in it? or did you have to drill out your existing nut?

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post #22 of 25 Old 03-08-2011, 09:15 AM Thread Starter
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Quote:
Originally Posted by arctic954 View Post
old thread --- back from the dead.

so..... did you ever end up getting the rear hollow axle? did you buy the GSG f4i front axle sliders?

So --- I know know the front 919 axle is hollow and identical to the f4i..... but does the GSG kit come with a new nut that has a hole in it? or did you have to drill out your existing nut?
The front slider kit came with the required bolt.
Got it all from TwistedThrottle.

I'm going to cob together my own rear kit and do it with the hollow F4i rear axle I have. I'm not yet sure if I'll use an aluminum cross piece or plug the axle ends with aluminum and simple drill and tap those. The sliders that I have yet to decide upon will guide my hand re the mounting design I decide upon.

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post #23 of 25 Old 03-08-2011, 01:13 PM
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..... I haven't been able to find GSG axle sliders on the Twisted Throttle website.

Another weird thing.... they also aren't listing their frame sliders anymore... it also looks like they have some new R&G products to replace.....

I'm wondering if they're dropping GSG as they run out of inventory.

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post #24 of 25 Old 03-08-2011, 08:00 PM Thread Starter
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Quote:
Originally Posted by arctic954 View Post
..... I haven't been able to find GSG axle sliders on the Twisted Throttle website.

Another weird thing.... they also aren't listing their frame sliders anymore... it also looks like they have some new R&G products to replace.....

I'm wondering if they're dropping GSG as they run out of inventory.
Something changed on the website and I too was tearing out my hair, but I found them.

Try a search for MOK.28-28-258

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post #25 of 25 Old 03-08-2011, 08:51 PM
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