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  1. #1
    Join Date
    Oct 2010
    Posts
    7

    Default Material recommendation for a motorcycle based trike????

    Hi i want to get some ideas for material to build a light weight but strong trike frame, i was looking at either mild steel or aluminium but as i donít know much about chassis construction im asking you guys for some help,

    The engine for the planned trike is a Honda vf750 producing around 120bhp, i would prefer to use some sort of aircraft grade steel but not sure what to go for????/

    Please help

  2. #2
    Join Date
    Oct 2010
    Location
    Rochester Ny area
    Posts
    6

    Default Material

    Hi I build custom Barstool Racers and have used both Alum. and steel tubing, both work well you just have to make sure you use proper gussets to make you're frame strong.

  3. #3
    Join Date
    Apr 2010
    Location
    Bronson, Fl
    Posts
    168

    Default

    Depending on total weight. I am using 1 1/4 HREW for most frame components and 1.5 DOM for overhead and roll components. I use .060 to .100 wall thickness depending on location and strength required. Might have a look at the Barracuda plans for an idea. Look also at Off Road Fab Network and see what those guys are using in their weekend wheelers and off road buggies. Too broad of a question without clear plan of what you want to build and what you plan to do with it really.
    Bob

  4. #4
    Join Date
    Sep 2005
    Location
    WY...armpit of U.S.A.
    Posts
    659

    Default

    Don't want to rain on your parade, but with the knowledge base you have shown thus far you may be better off taking baby steps with this project. Bar stool racers, excellent start, short chassis, low flex...off-road vehicles, more education, lot more flex and engineering...highway operation, forget it for now. I'm not trying to put you down, but you're asking a mighty basic question for a guy attempting to fabricate a vehicle with 120bhp. If it isn't for highway operation, have at it, its your hide.

    I got to see my brother lose the front end of his Corvair trike back in our high school days coming by the Dairy Queen @ 10-15 mph after he had driven it over from the next town. He got lucky...only a bad case of road rash and wounded pride. Worked well for a year or so, but a molded in steering hub with a nice paint job didn't hold up with bad engineering and suspect welds...18" over Harley springer and too many wheelies were just too much.
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  5. #5

    Default

    Quote Originally Posted by WyoRoy View Post
    Don't want to rain on your parade, but with the knowledge base you have shown thus far you may be better off taking baby steps with this project. Bar stool racers, excellent start, short chassis, low flex...off-road vehicles, more education, lot more flex and engineering...highway operation, forget it for now. I'm not trying to put you down, but you're asking a mighty basic question for a guy attempting to fabricate a vehicle with 120bhp. If it isn't for highway operation, have at it, its your hide.

    I got to see my brother lose the front end of his Corvair trike back in our high school days coming by the Dairy Queen @ 10-15 mph after he had driven it over from the next town. He got lucky...only a bad case of road rash and wounded pride. Worked well for a year or so, but a molded in steering hub with a nice paint job didn't hold up with bad engineering and suspect welds...18" over Harley springer and too many wheelies were just too much.
    They are wise words indeed.

    We call it CDS tube seamless you call it DOM which would be a great place to start Also make joints and perform destructive tests to determine how well you are going. The main rule with tube joints in NO GAPS. The better the fit the better the finish.

  6. #6
    Join Date
    Oct 2010
    Posts
    7

    Default

    Quote Originally Posted by WyoRoy View Post
    Don't want to rain on your parade, but with the knowledge base you have shown thus far you may be better off taking baby steps with this project. Bar stool racers, excellent start, short chassis, low flex...off-road vehicles, more education, lot more flex and engineering...highway operation, forget it for now. I'm not trying to put you down, but you're asking a mighty basic question for a guy attempting to fabricate a vehicle with 120bhp. If it isn't for highway operation, have at it, its your hide.

    I got to see my brother lose the front end of his Corvair trike back in our high school days coming by the Dairy Queen @ 10-15 mph after he had driven it over from the next town. He got lucky...only a bad case of road rash and wounded pride. Worked well for a year or so, but a molded in steering hub with a nice paint job didn't hold up with bad engineering and suspect welds...18" over Harley springer and too many wheelies were just too much.
    not trying to sound a bit a bit pissed off but i may have worded my thread wrong, but i have use 32mm dia cfs 2.4mm in the passed to build trike i was just trying to get ideas on different types of metal like t45 or some sort of alumunium but not using alumunium alot in this sort of way i was after some ADVISE not slagging off

  7. #7
    Join Date
    Nov 2006
    Location
    Lake of the Ozarks MO
    Posts
    3,536

    Default

    Quote Originally Posted by grommet View Post
    not trying to sound a bit a bit pissed off but i may have worded my thread wrong, but i have use 32mm dia cfs 2.4mm in the passed to build trike i was just trying to get ideas on different types of metal like t45 or some sort of alumunium but not using alumunium alot in this sort of way i was after some ADVISE not slagging off
    I'm gonna take a guess and say that yer not from these parts...are you?
    Reason I say that is I might have a bit of interest in your question but I don't have the foggiest idea of what size you are talking about. And I also never heard of the metal you mention either.
    I am guessing that if your were to convert all that data over to something more American, or something at least a hillbilly like me can understand, you may get some decent feedback.
    Miller Dynasty 700...OH YEA BABY!!
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