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F3 Fork Tubes SS legal on SV?

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2002r6

F3 Fork Tubes SS legal on SV?
« on: December 27, 2004, 10:28:50 am »
I was planning to install the F3 internals in my SV forks, but found out that for first gen SV's you need to use the F3 fork tubes as well (you don't on the 2nd gen SV).  I've heard that just replacing internals is SS legal, but can you replace the fork tubes as well, retaining the stock lowers?  It's the same diameter tube as the SV, and I can't see any competitive advantage to swapping the fork tubes.

Also, can't seem to be able to access the rules online at the moment.
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Dawn

Re: F3 Fork Tubes SS legal on SV?
« Reply #1 on: December 27, 2004, 11:55:42 am »
CCS CLASSES - Machines are classified for competition as SuperSport, SuperBike,
SuperTwins, Grand Prix, ThunderBike, Formula 40 and GT.
6.1 SuperSport - SuperSport motorcycles are production machines sold by manufacturers
and their dealers for street use in North America via normal commercial channels. All
machines must have unaltered VIN numbers. Proof of compliance rests with the
competitor entering the machine.
6.1.1 Production machines not sold by manufacturers and their dealers for street use in
North America via normal commercial channels may be approved on an individual
basis. CCS will maintain a list of non-standard approved models and that list will be
available at each event from the Race Director.
6.1.2 All motorcycles must meet the following requirements in addition to the
applicable requirements in Section 5.
A. Original equipment wheels, brake calipers, forks, frame, engine, fuel induction
system, and swing arm must be used.

(1) 18" wheels may be replaced with 17" wheels of the same width.
(2) 16" wheels may be replaced with 17" wheels of the same width.
B. Aftermarket brake rotors may be used but must be the same dimensions as the
originals and must be made of a ferrous material. Non-current motorcycles may use
brake rotors up to the same size as those that come as original equipment on the
current model machine.
C. Any fairing may be used provided it is made of plastic, fiberglass or carbon fiber.
D. Original equipment air box must remain as produced. Air filters must be used but
may be Aftermarket units. Aftermarket air filters are restricted to units available
via normal commercial channels and designed for that specific model machine.
Aftermarket air filter units that replace part of the OEM. airbox are required to
maintain the original size and number of air inlet openings as the stock unit.
E. Engine modifications include the following:
(1.) Pistons which are no larger than 1mm over stock size may be used but must
be same compression ratio as the OEM pistons.
(2.) Original equipment cylinders must be used.
(3.) Original equipment head, valves, and cams must remain as produced, with the
exception of machining the gasket surface of the cylinder head.
(4.) Original equipment cases, crankshaft, and connecting rods must remain as
produced.
(5.) Original equipment transmission gears must be used.
(6.) Carburetor bodies and/or throttle bodies may not be modified, bored, or
polished.
F. Internal engine modifications on all single cylinder machines, 4-stroke twin
cylinder machines with less than 4 valves per cylinder, and all twin cylinder
machines produced prior to the 1994 model year are unlimited, provided class
displacement limits are not exceeded. Aftermarket carburetors may be used on
single cylinder machines, all 4-stroke twin cylinder machines with less than 4
valves per cylinder, and all twin cylinder 4-stroke machines produced prior to the
1994 model year. 6.2.2. D. is waived for single cylinder and all twin cylinder 4-
stroke machines produced prior to the 1999 model year.
G. Tires must be DOT approved.
1. If the Race Director declares a “Wet” event, commercially available rain tires
may be used in place of DOTapproved tires for the remainder of that race day.
6.1.3 - Displacement limits are absolute and are set as follows:


« Last Edit: December 27, 2004, 12:10:23 pm by Dawn »
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DucOwner23ex

Re: F3 Fork Tubes SS legal on SV?
« Reply #2 on: March 25, 2005, 10:47:38 am »
My shop, (has 2 names) CycleZoo.com and SVRaceShop.com convert SV forks to use F3 internals. This meets the intent of the rule, as the forks are not changed outside and look stock externally. Just about every good rider would be in violation of the rules if the internals could not be changed or modified. The intent isn't to make bike unsafe.   

As the F3 fork and SV fork uppers use similar chrome tubes in finish, size and construction, It'd be very tough for any organization to say they are not legal when there is no external difference in the tubes. Fork caps don't count because aftermarket caps are either allowed on the SVs or always overlooked?

Clayton


 
« Last Edit: March 25, 2005, 10:54:04 am by DucOwner23ex »
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redbean

Re: F3 Fork Tubes SS legal on SV?
« Reply #3 on: August 19, 2005, 10:27:23 am »
what is the benefit of the F3 internls over, say race tech emulators and springs for the SV?
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Woofentino Pugrossi

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Re: F3 Fork Tubes SS legal on SV?
« Reply #4 on: August 19, 2005, 01:06:29 pm »
Quote
what is the benefit of the F3 internls over, say race tech emulators and springs for the SV?



My guess is external ajdustability. Maybe also theres more stuff available for a F3.
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Rob
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tzracer

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Re: F3 Fork Tubes SS legal on SV?
« Reply #5 on: August 19, 2005, 01:26:50 pm »
The later F3 forks had cartridges. They work better than emulators. You would get adjustable rebound damping (fork cap), but probably not compression damping (unless the adjuster is in the bolt at the bottom of the fork).
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Brian McLaughlin
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