Inverted vs non inverted forks - Chicagoland Sportbikes
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post #1 of 65 (permalink) Old 09-08-2010, 06:04 AM Thread Starter
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Inverted vs non inverted forks

I just wanted to know what the difference is between the two. one having radial mounted brakes, and what the advantage is over the other. being a begginer track rider i might not benefit from the radial mounted brake version but i did notice when Kevin from safety first did my suspension he stiffened up the rear and front (to the best he could) and i noticed a big difference in handling just from the rear suspension being stiffer. he said my front forks are still way soft even if he tuned it as stiff as it could.

i have an 04 r6 so non inverted forks. i was wondering if i should get 05 front end that has inverted forks or just get my forks serviced and get heavier oil or cartriges? school me on that and what the most cost effective thing to do for my front end. i know i need to get it serviced which i plan to do in the winter and send to kevin when he moves. but what else? thanks!
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post #2 of 65 (permalink) Old 09-08-2010, 06:09 AM
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A well set up set of forks with proper springs are best.

Inverted, non-inverted...... girder...... whatever

Don't sweat it...... have 'em set up.

Inverted forks are stronger overall.... as are radial brakes....that is why
all the top / current bikes have them and they use them for racing.


A good rider could take your bike stock ( with good tires ) set-up the
suspension and ride it within a few seconds a lap as fast as anything.



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post #3 of 65 (permalink) Old 09-08-2010, 06:46 AM
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im definately with blarney on this one,

your money is far better spent having the bike properly sprung for your weight, with the correct oil to get proper damping, and spending more time in the seat than it is on a new front end

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post #4 of 65 (permalink) Old 09-08-2010, 07:00 AM Thread Starter
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thanks guys. how much does that run on average?
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post #5 of 65 (permalink) Old 09-08-2010, 07:07 AM
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well depends what you mean by stiff. Do you mean preload (springs) or damping? Springs are cheap, new valving is a bit more.

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post #6 of 65 (permalink) Old 09-08-2010, 07:43 AM Thread Starter
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yeah springs. maybe a revalve kit too since im setting it up. bought the bike at 20k miles its at 25k, i doubt the forks have been serviced at all. so yeah winter project..for kevin. lol
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post #7 of 65 (permalink) Old 09-08-2010, 07:49 AM
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Kevin resprung my forks and changed the oil/seals last winter and I was very happy with the results.

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post #8 of 65 (permalink) Old 09-08-2010, 07:52 AM Thread Starter
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ill have him do that. but ill have to mail it to him since he's moving. big winter project as i don't know first thing about removing the forks. good thing for google, and online manuals. hope i don't puck it up.
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post #9 of 65 (permalink) Old 09-08-2010, 07:54 AM
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Quote:
Originally Posted by RxM86 View Post
thanks guys. how much does that run on average?
fork springs run about 100 not sure on the shock springs

at 25k or even 20k the oil in the forks is absolutely shot and the damping provided by the forks and shock is far far less than what it should be.

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post #10 of 65 (permalink) Old 09-08-2010, 07:54 AM
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Just a guess, but new valving, springs, oil, and fork service will probably be a couple hundo. All new front end would be at least a G.

If you have the cash, it wouldn't be wasted, but I'd save the $$ and just get what you have setup the best you can.

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post #11 of 65 (permalink) Old 09-08-2010, 07:58 AM
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Quote:
Originally Posted by PatFitz9 View Post
Just a guess, but new valving, springs, oil, and fork service will probably be a couple hundo. All new front end would be at least a G.

If you have the cash, it wouldn't be wasted, but I'd save the $$ and just get what you have setup the best you can.
I'd respectfully disagree, at a minimum he should get the correct springs, and depending on how much stiffer those springs are than stock he may or may not beable to keep stock vavling. If the dude is 300lbs, the bike's stock valving would never be able to compensate for a spring that much stiffer. However, if he's pushing 140lbs, then sure, stock valving will be fine for a while. It's not really a simple answer, you need to know the riders size and pace to make a suggestion.

EDIT: and this is coming from me, one of the biggest cheap asses on this board :lol: I still have a stock rear shock and the only upgrade to my forks are springs.

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post #12 of 65 (permalink) Old 09-08-2010, 08:03 AM Thread Starter
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Quote:
Originally Posted by Pilotx1 View Post
fork springs run about 100 not sure on the shock springs

at 25k or even 20k the oil in the forks is absolutely shot and the damping provided by the forks and shock is far far less than what it should be.
yeah it feels that way. kinda why i don't push it as hard as far as trying to outbrake everyone lol. im slow anyway. bike dives pretty hard in hard braking but the rear is very stable during cornering to which i can get a good drive out of.

Quote:
Originally Posted by PatFitz9 View Post
Just a guess, but new valving, springs, oil, and fork service will probably be a couple hundo. All new front end would be at least a G.

If you have the cash, it wouldn't be wasted, but I'd save the $$ and just get what you have setup the best you can.
i'd like to swap the front end out, its about $500 for used forks, wheel, calipers. then to set it up for my weight as far as springs and shit...yeah thatll cost.

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I'd respectfully disagree, at a minimum he should get the correct springs, and depending on how much stiffer those springs are than stock he may or may not beable to keep stock vavling. If the dude is 300lbs, the bike's stock valving would never be able to compensate for a spring that much stiffer. However, if he's pushing 140lbs, then sure, stock valving will be fine for a while. It's not really a simple answer, you need to know the riders size and pace to make a suggestion.
i have an idea now on what i need done. thanks for your inputs. im gonna ask kevin for a quote and get this started when salt hits the ground. and taking out the forks look pretty straight forward. since im not doing a swap i can leave the triple alone.
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post #13 of 65 (permalink) Old 09-08-2010, 08:23 AM
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All the fast guys have inverted forks

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post #14 of 65 (permalink) Old 09-08-2010, 08:34 AM Thread Starter
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All the fast guys have inverted forks
a challenge! beat the fat guys with my non inverted forks.
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post #15 of 65 (permalink) Old 09-08-2010, 08:51 AM
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Quote:
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yeah springs. maybe a revalve kit too since im setting it up. bought the bike at 20k miles its at 25k, i doubt the forks have been serviced at all. so yeah winter project..for kevin. lol

Stock forks are completly fine for your pace unless you are 250 pounds. Untill you are running the bike to half its potential I wouldn't worry about it. once you start running under 1:05's at Autobaun north I would worry about dumping money into a faster bike or working about swapping out forks.

Kevin will steer you right with the fork rebuild/refresh
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post #16 of 65 (permalink) Old 09-08-2010, 08:53 AM
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Quote:
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Stock forks are completly fine for your pace unless you are 250 pounds. Untill you are running the bike to half its potential I wouldn't worry about it. once you start running under 1:05's at Autobaun north I would worry about dumping money into a faster bike or working about swapping out forks.

Kevin will steer you right with the fork rebuild/refresh
I was running under 1:25 at ACC north with inverted forks... I probably need a slipper clutch to get into the 1:05's

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post #17 of 65 (permalink) Old 09-08-2010, 08:55 AM Thread Starter
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Stock forks are completly fine for your pace unless you are 250 pounds. Untill you are running the bike to half its potential I wouldn't worry about it. once you start running under 1:05's at Autobaun north I would worry about dumping money into a faster bike or working about swapping out forks.

Kevin will steer you right with the fork rebuild/refresh
yeah hoping so. pm'd him. just waiting for his reply.

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I was running under 1:25 at ACC north with inverted forks... I probably need a slipper clutch to get into the 1:05's
no..you needz da turbo...
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post #18 of 65 (permalink) Old 09-08-2010, 08:56 AM
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yeah hoping so. pm'd him. just waiting for his reply.
It's faster to call him. I think the shop is still open for a few more weeks.

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post #19 of 65 (permalink) Old 09-08-2010, 08:58 AM Thread Starter
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It's faster to call him. I think the shop is still open for a few more weeks.
ill do that a little later.
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post #20 of 65 (permalink) Old 09-08-2010, 10:59 AM
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I felt a huge difference just with springs and fresh oil. Start there.
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post #21 of 65 (permalink) Old 09-08-2010, 11:07 AM
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doesnt really matter as long as you slide up the tubes to compensate.

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post #22 of 65 (permalink) Old 09-08-2010, 11:32 AM
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I'm still new at track riding but not completly new to mechanics. However, Kevin has a video for sale that I bought that really helpd me understand how motorcycles are set up and why they are set up that way. You should look into it.

You wanna see my itinerary?
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post #23 of 65 (permalink) Old 09-08-2010, 11:39 AM
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I'm still new at track riding but not completly new to mechanics. However, Kevin has a video for sale that I bought that really helpd me understand how motorcycles are set up and why they are set up that way. You should look into it.
the suspension for mortals dvd?

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post #24 of 65 (permalink) Old 09-08-2010, 01:13 PM
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the suspension for mortals dvd?
An Introduction to Sportbike Suspension By Dave Moss Of Catalyst Reaction

Presented by: On The Throttle.TV

You wanna see my itinerary?
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post #25 of 65 (permalink) Old 09-08-2010, 01:18 PM

 
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Inverted, standard?????? My forks don't even have rebound damping!

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post #26 of 65 (permalink) Old 09-08-2010, 01:31 PM
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Inverted or not, as has been stated, well set up are what you want.

Fastest guys on SV650's (racers) use the stock non-inverted forks.
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post #27 of 65 (permalink) Old 09-08-2010, 01:55 PM
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Inverted or not, as has been stated, well set up are what you want.

Fastest guys on SV650's (racers) use the stock non-inverted forks.
Slow guys on SV's rock the gixxer front end and Ohlins rear

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post #28 of 65 (permalink) Old 09-08-2010, 01:56 PM
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75% of being fast is the ability to look fly. Inverted forks=fly

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post #29 of 65 (permalink) Old 09-08-2010, 02:08 PM
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75% of being fast is the ability to look fly. Inverted forks=fly
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post #30 of 65 (permalink) Old 09-08-2010, 02:22 PM
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75% of being fast is the ability to look fly. Inverted forks=fly
Chunk you need to become my facebook friend. Pilot posts stuff up there without taking fly into account in the slightest.
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