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I am considering buying a crf 250l dual sport. I like the size and seems like the perfect lil bike to whip around town in. Its my alternative to a scooter. Not to mention the price tag is very attractive. I'd like to make it into a scrambler. My buddy told me this would be difficult because this particular bike has a perimeter frame, and a metal gas tank wouldn't properly fit. Also the radiator is up front under the plastics and would stick out funny. Any ideas and could someone school me on what a perimeter frame is and why a cool looking metal gas tank won't fit? Any ideas on how to make this possible? I know the xr 650 could work but I like how small and cheap the 250 is. Thanks

 

Edited by loosechange
grammar

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Is that your bike in your avatar?  Perimeter frame has 2 beam that go around the fuel tank while a non-perimeter has a backbone that runs down the middle and the fuel tank sits over it.  If you want a sweet scrambler then go for a plated XR250.  No radiators, not a perimeter frame, and lighter than the CRF250L with more aftermarket support.

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Older bike frames typically have one main tube that the gas tank attaches to. So older gas tanks are like an upside down U and they attach to this main tube with tabs. The CRF250L has two separate tubes and the gas tank is suspended between the two. Modern motorcycle designs have all sorts of creative frames to lower weight, center of gravity, make bikes smaller and more nimble, etc. I think what your friend is saying is that it would be hard to fit a "classic" looking gas tank to this modern frame design, and I think that's true.

If you do a search for "CRF250L Frame" on google images you'll see both the naked frame and many photos of the bike stripped down which will give you an idea of the stance of the bike. When you start a project bike you really want to have a bike that looks like it will fit the design you're going for... Working against the frame is difficult if you don't want to start cutting and welding if you want to keep things simple.

If you want to stay light and nimble, a DRZ400 might lend itself better to this kind of project, it has a more traditional frame and there are TONS of aftermarket parts to give it the look you want without too much of a hassle.

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if the CRF is absolutely where you want to start, then you COULD make it work, it will just take a lot of redesign and welding. it's not inconceivable to change a perimeter frame to a traditional one....you just cut the perimeter bits out, and replace with a single tube.

 

if you really want a bike that's cheap to get, easy to work on, and infinitely modifiable....find a used TW200. these things are the chop shop kings. the guys in japan make everything from scramblers to bobbers. I've even seen a superbike version.

https://www.google.com/search?sourceid=navclient&aq=&oq=tw200+scrambler&ie=UTF-8&rlz=1T4GGNI_enUS540US540&q=tw200+scrambler&gs_l=hp...0l5j41l3.0.0.0.3642...........0.DUI6gWde1Sk&qscrl=1

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