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    Is there an alternative to CBR front end

    Afternoon Guys
    I have considered putting a CBR front end on my Bros now that the rear is almost sorted (polished swing,VFR 750 & stainless hose through the swing arm)
    Getting hold of a 94 F2 is tough so are there any other options.
    NC30? I have read this is a direct replacement.
    VFR 750? if the rear wheel fits....does the front end.
    Any guidance or suggestions would be great.
    Cheers Guy
    If your not livin' on the edge your taking up too much room

    #2
    Arcie,
    being in the UK as well I have just gone thro what you're about to do.

    Firstly I changed to a CBRF2 wheel upfront, and as there is only mounting
    points on the legs for 1 brake caliper, my existing hawk rotor/disc bolted
    onto the F2 wheel. My next decision was to sort out the suspension up front so I located a set of F3 forks (cartridge type) model FS-FV and this winter I will swap the insides over so I can keep my original legs and so keep the single caliper disc look.

    Your now asking why not put the F3 forks on the F2 or F3 wheel and have
    the brakes and disc from the CBR. Well I wanted to keep the speedo drive otherwise your have to find a way to measure your speed using a push bike sensor on the front wheel or some otherway.
    If its going to be a track bike then theres no problem.

    Taken from a common modification is to fit the complete front end from a CBR600F2/F3. Once you have the parts, fitting one is a simple bolt-on operation, as many of the parts are similar (even identical) between the two bikes. This gives you very good dual-disc brakes; a 3.5-inch front wheel; and, if you use a '94 or later fork, an excellent cartridge fork. This is a wonderful modification to make, as the brakes are excellent (far better than the Hawk units) and modern radial tires will transform the bike. The damping rates on the '91-'93 (pre-cartridge) forks are the same as those on the stock Hawk forks.

    The parts you need to make the swap are the complete fork tube/slider assemblies; the complete braking system, including the master cylinder (actually, the Hawk master cylinder will work, and gives you a right-hand mirror mount) and rotors; the front wheel; and the right-hand wheel spacer. The Hawk triple clamps, axle, speedo drive, handlebars, controls, etc, may be retained, although if you use the Hawk bars instead of the F2 bars, you'll need to make up some custom brake lines, as the F2 lines are too short. Indeed, you'll want to keep the stock Hawk triple clamps, since they provide a place to mount the instruments.

    Note that you if you fit an F3 fork, you'll lose the speedometer. The F3 has an electric speedo driven off the countershaft. The Hawk speedo drive won't fit on the F3 fork, as the F3 wheel's hub is too wide (and doesn't have a fitting for the speedo drive, anyway). For a streetbike, a '94 F2 fork is a much better bet.

    btw, Race Tech emulators for the Hawk drop in to the '91-'93 F2 forks, and Hawk damper rods and springs will fit in there, as well. Near as I can tell, the only difference between the Hawk and the early F2 forks are caliper mounting lugs on the sliders
    on the FAQ


    The fork size is 41mm so any bike with this fork size will fit into the triple tee clamps and then you would have to add the brakes and wheel from your donor bike (fork length may effect your handling)
    You could even get a complete F4 front end and have some upside down forks (USD) but then your still need to find away to measure speed as most bikes these days have electronic speedos. It can be done
    "Life may begin at 40, but it doesn't get real interesting until about 150."

    • '88 in Candy Flair Blue + '90 in Italian Red
    • Ohlins Rear Shock
    • F2 front wheel
    • VFR750 rear wheel
    • Hiperform seat&headers
    • MSMotorsport Seat Cowl
    • Steve Lenac Tokico six pot caliper

    Comment


      #3
      The current hot fork set up is and rc51(sp1 or sp2)you lose the speedo. You can use a veypor or a vapor both units work well i using the veypor vr2 it was more $ but it has add on that I liked. You have some sort of tech inspection so I don't know if they would pass it with out a stock speedo.
      1\2 Liter Duc Eater

      Comment


        #4
        quick note! VFR 750 front ends dont fit! i know my bros came with one and the actuall spindle is about 4mm wider so the wheel doesnt sit inline! i now have the cbr f2 setup and it goes straight on and you have a speedo drive!


        cheers
        Robs

        Comment


          #5
          RC51 is a direct bolt-on (and USD forks - woohoo!) but yes, you lose the speedo. Aftermarket speedos will pass inspection; in fact, digital bicycle speedos will too - and the Sigma Sport is by concensus the most accurate.

          Find the right inspection station, and they'd pass a unicycle if you had a registration card for it!
          1988 "BlackHawk" project
          1989 "RallyHawk" is Chuck's now!
          1988 "The Gray" Tempest Gray Metallic stocker

          I can't tell you how peaceful it is. Shinya Kimura
          People who know ride Hawks. Riot

          Comment


            #6
            we love fleabay!

            http://cgi.ebay.co.uk/honda-cbr-600-...QQcmdZViewItem

            http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA%3AIT&rd=1


            cheers
            Robs

            Comment


              #7
              Another option I was thinking about would be to put the Deauville
              front end and wheel.
              Only because it got the same egg wisk wheel as the Hawk/Bros but is 120, and legs come with twin disks/brakes. And also has the same
              speedo drive as the Hawk/Bros. Drop in the F3 insides (I think they will fit) and would look good for those wanting to keep a match with their rear wheel.
              http://www.hawkgt.com/photoalbum/alb...Deauville1.jpg
              "Life may begin at 40, but it doesn't get real interesting until about 150."

              • '88 in Candy Flair Blue + '90 in Italian Red
              • Ohlins Rear Shock
              • F2 front wheel
              • VFR750 rear wheel
              • Hiperform seat&headers
              • MSMotorsport Seat Cowl
              • Steve Lenac Tokico six pot caliper

              Comment


                #8
                I have a f4 front end on the race HAWK. Direct bolt on.
                You can also drop in a CBR 929 fronend end as well.
                Gino
                Chain Roller

                NEVER UNDERESTIMATE THE PREDICTABILITY OF STUPIDITY

                2012 CCS LRRS ULSB Champion
                2012 CCS LRRS P89 Champion
                2008 CCS ULSB National Champion
                LRRS HAWK GT Racer CCS Expert #929
                ECK RACING

                Comment


                  #9
                  Wheel on ebay, looks like a CBR F2
                  http://cgi.ebay.com/ebaymotors/1988-...spagenameZWDVW
                  "Life may begin at 40, but it doesn't get real interesting until about 150."

                  • '88 in Candy Flair Blue + '90 in Italian Red
                  • Ohlins Rear Shock
                  • F2 front wheel
                  • VFR750 rear wheel
                  • Hiperform seat&headers
                  • MSMotorsport Seat Cowl
                  • Steve Lenac Tokico six pot caliper

                  Comment


                    #10
                    Originally Posted by JR
                    Another option I was thinking about would be to put the Deauville
                    front end and wheel.
                    Only because it got the same egg wisk wheel as the Hawk/Bros but is 120, and legs come with twin disks/brakes. And also has the same
                    speedo drive as the Hawk/Bros. Drop in the F3 insides (I think they will fit) and would look good for those wanting to keep a match with their rear wheel.
                    http://www.hawkgt.com/photoalbum/alb...Deauville1.jpg
                    But it is to heavy , i mount it in 2003 and this jear i sold it

                    2003 http://www.gt647.de/HAWKs/2003rot/Ha...22.08.2003.JPG
                    2004 http://www.gt647.de/HAWKs/2004rot/Hawks8.jpg
                    2004 http://www.gt647.de/HAWKs/2004rot/Hawks3.jpg
                    2005 no changes
                    2006 coming soon

                    I only use the Deauville forklegs , disks , wheel an brakes (BREMBO) , the forks are stoke and the Fender is a taken from a Ducati Monster.
                    Dirk

                    Comment


                      #11
                      Dirk,
                      what did you do about the "Dual Braking system" on the Deauville brakes?
                      "Life may begin at 40, but it doesn't get real interesting until about 150."

                      • '88 in Candy Flair Blue + '90 in Italian Red
                      • Ohlins Rear Shock
                      • F2 front wheel
                      • VFR750 rear wheel
                      • Hiperform seat&headers
                      • MSMotorsport Seat Cowl
                      • Steve Lenac Tokico six pot caliper

                      Comment


                        #12
                        i do not know it exactly but til 2000/2001 the Deauville did not had a "Dual Brake System" , i use the front end of a 1999 Deauvile with golden 2-Piston-BREMBO-Caliper without DBS , the "Dual Break System Deauville" has black 3-Piston-NISSIN-Calipers with DBS

                        2001


                        2002
                        Dirk

                        Comment


                          #13
                          Re: Is there an alternative to CBR front end

                          Originally Posted by ARCIE31
                          Afternoon Guys
                          I have considered putting a CBR front end on my Bros now that the rear is almost sorted (polished swing,VFR 750 & stainless hose through the swing arm)
                          Getting hold of a 94 F2 is tough so are there any other options.
                          NC30? I have read this is a direct replacement.
                          VFR 750? if the rear wheel fits....does the front end.
                          Any guidance or suggestions would be great.
                          Cheers Guy
                          If you are anywhere other than the USA you might be able to find any of the forks form the NSR250MC21 or MC28.

                          I do not own a Hawk but just checking out your site and figured I would pipe in on forks. I have been using Honda forks on Yamaha for a while

                          With the NSR250 fork you will need to change the spring but with the NSR fork you can only mount the clip-ons under the upper triple.

                          The NSR250MC21 fork is 41mm and the CBR600F2 front wheel is a direct fit if you want to use a cable drive speedometer. The NSR fork uses the same brake calipers as the RC30 so you will have four-piston calipers.

                          The NSR forks will fit the Hawk triple clamps also.

                          My view is that you can almost make any fork fit if you put your mind to it.

                          Here is my current bike. Sorry it is not a Honda but the wheels are from a CBR600f2 and the forks assmebly is from a NSR250mc21

                          CBR600F2 complete front end on my RZ
                          http://i17.photobucket.com/albums/b9...3/rz111111.jpg

                          NSR250mc21 forks, triples, brakes and fender with CBR600f2 wheel and rotors on my RZ now.
                          http://i17.photobucket.com/albums/b9...3/P9120864.jpg

                          How about a CB-1 fork with a CBR600F1 wheel on a 1977 Yamaha RD400?
                          http://i17.photobucket.com/albums/b91/tkm433/RD400.jpg

                          Put your mind to it and it can be done!

                          Comment


                            #14
                            look at the part number on head bearings for all these diffrent models thats another thing to look for if you want to change entire front end or you can mix and match all diffrent kinds of combos as you can see from all the previous threads
                            1988 & 1991 hawkgt, 2005 rc51

                            Comment

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