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Thread: Reinventing the fork

  1. #1
    Join Date
    Jan 2009
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    pasco WA
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    Reinventing the fork

    Hey guys, I was wondering if any one has considered using non-telescopic forks on there trikes?

    Check out these sidecar MXers with swing arm front suspension.
    link to sidecarcross websitehttp://www.sidecarcross.com/
    someone told me that the reason the sidecars use the type of suspention they do is because the side loads created by the side car can jam up conventional, telescopic forks.

    I also found this pic of an old HRC race bike, (two wheels), with a mono shock front end. I was web surfing one time and i saved the pic. but can't remember what the site was called now. I think they called the bike, 'the robo bike' or something. its the attachment.

    Im rather new to 3 wheelers, but I was wondering if there was anything to gain if this was applied to trikes. Just a thought, what do you guys think??? good idea, bad idea, has anyone tried it???
    Attached Thumbnails Attached Thumbnails IMG_0602.jpg  
    well here goes,
    1986 Honda ATC200X
    1984 Honda ATC250R (for sale)
    1981 Honda XR200R
    1983 Honda XR200R
    1985 Honda CR250R
    2005 Honda CRF150F
    1979 Honda XL125
    2004 Honda CRF250R
    1978 Honda Z-70 (and yes your right, honda didn't make one)
    2004 Suzuki DR-Z 125L
    1982 Suzuki GS1100E
    2004 Honda nock-off CRF110
    ???? Yamaha 4-Zinger
    think thats it
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  2. #2
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    Holy crap. Untill now I have never heard of side car racing. Why don't they just get a real 3 wheeler... I think they look terrible, unsafe, prone to major failure and just plain ridiculous. I mean geese look at how many points of failure there are in the pic you posted. Sorry to anyone that rides these contraptions but there is no way I would ride one of those.

  3. #3
    Join Date
    Jan 2009
    Location
    pasco WA
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    i thought they were weird too, i would still want to ride one. but i wouldn't want to be the passenger!! but what do u think of the suspension?
    well here goes,
    1986 Honda ATC200X
    1984 Honda ATC250R (for sale)
    1981 Honda XR200R
    1983 Honda XR200R
    1985 Honda CR250R
    2005 Honda CRF150F
    1979 Honda XL125
    2004 Honda CRF250R
    1978 Honda Z-70 (and yes your right, honda didn't make one)
    2004 Suzuki DR-Z 125L
    1982 Suzuki GS1100E
    2004 Honda nock-off CRF110
    ???? Yamaha 4-Zinger
    think thats it
    ^^^I HATE DMV^^^

  4. #4
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    I think they are lovely Honda Research and Development history, but too many linkage and failure points.....
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  5. #5
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    There are cantelever frontends like that gained a little popularity on road racing motorcycles. Try a google search for a hossack front end. Their main advantage is how little the rake and trail changes as it goes through the suspension travel, and how it effects the steering geometry. I think you'd be hard pressed to find anything better comfort wise then a telescopic fork.

  6. #6
    Jerm1179's Avatar
    Jerm1179 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    a dirtbike with a sidehack!...thats insane.....trust your pilot! and respect your monkey! lol straight up insane!

  7. #7
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    i want to try it. that would be awesome.

  8. #8
    cbx1170's Avatar
    cbx1170 is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Look up the Parker-Radd stuff for bikes from the 80's. Parker. Guy was way smart. I think Yamaha copied/bought Patent release for one one of their 1000cc bikes and produced it. Worked good.... didnt sell. It does work but not 3 wheel material.

  9. #9
    bcredneck is offline I can fit a square peg in a round hole. Just give me a hammer and duct tape! Arm chair racerJust too addicted
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    i had a sidehack bmx problem was it was a hackjob lost my buddy going down a hill apparantly a mig without gas or flux core wire dosent make good welds

  10. #10
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    Quote Originally Posted by bcredneck View Post
    i had a sidehack bmx problem was it was a hackjob lost my buddy going down a hill apparantly a mig without gas or flux core wire dosent make good welds
    No, it doesn't. And it'd likely end up getting someone seriously hurt or killed.

  11. #11
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    That RC250 is a ribi fork. dont think it made it past the prototype stage but it kinda looks cool.

    http://moto.mpora.com/features/part-...ory-bikes.html
    1984 Tecate
    1983 ATC200
    1989 CR500
    1992 Nighthawk 750
    People say the same thing about every toy i have. "your going to kill yourself"

  12. #12
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    The KLt200C has an interesting front suspension set up. Not as odd as those seen above, but defiantly different.
    I just wanna go fast. If your not first, your last!!
    Reproducing the Tecate CDI. Contact me if you need one. I'm most accessible on FaceBook. You can find me on the 1984-1987 Kawasaki Tecate KXT250 Group.

  13. #13
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    here is another page with some info on the Yamaha GTS mentioned and some other front end designs.

    http://www.advrider.com/forums/showthread.php?t=461807
    1984 Tecate
    1983 ATC200
    1989 CR500
    1992 Nighthawk 750
    People say the same thing about every toy i have. "your going to kill yourself"

  14. #14
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    australia
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    Search "leading link trike pictures" on google, then you will see leading link front ends are nothing new.

    Leading link front ends and three wheeled machines go hand in hand. They are good for reducing trail (making them easier to steer) whilst maintaining usable suspension angles. Leading links are far more rigid than forks, but the trade off is additional weight and reduced wheel travel

    If our ATC's never evolved into HIPO MX machines, my guess is there would have been more Leading link three wheelers made
    My toys 85 KXT250A2, 85 ATC250R, 85 Tri-z 250, 06 LT-R450, 04 YFZ450S, 07 125 typhoon x 3, 06 FPV GT.

  15. #15
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    leading link forks were popular in the 60's/70's on makes such as GREEVES,DKW,and others. the reason why they are still favored in hack racin is they handle the added sideloads of the hack. this is true even in sidecar roadracing rigs. ugly as my mother-in-law,though.

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