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Discussion Starter #1
Hey does anyone know offhand the similarities and or differences between the BW and TW engine?



I'm guessing the sprocket shaft isn't as long to offset the rear tire, ( the BW has a jack shaft built into the swing arm ) and the trans gearing...



From the looks of it, they look almost identical.



Figured I can put this out there and perhaps this can possibly expand the pool of parts we can all source from....



Boy does this look like fun!!!



Any one have the BW fever too?





Yamaha BW200 by Richard Todd Giordanella, on Flickr
 

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A BW350 came up not too long ago on the local craigslist. If I had the space for it, it would have been mine!



If Big Wheel fever is a real disease, I think I have it too!
 

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Some years ago I've bought 2 BW200 on ebay. But they were stolen, before the selling was completed.



I am really sure, that there are no differences between the TW200 and the BW200 (except the sprocket shaft).
 

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The BW has a compression release cable and the carb is a pull only. I will take some close up pictures of the engine this weekend.
 

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Discussion Starter #6
Oh wow!



Thats awesome!



Thanks for the info guys....



You know, I was just thinking the same, about the carb, that must be different too....
 

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My cousins had a couple of them for cruising the irrigation system in the fields. They sat lower as the tires were more like a quads. How about just putting wider forks on a TW and match the rear tire for the front.
 

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Discussion Starter #9
Hey Plumb,



You know, there is already a kit in existence for having the rear tire as the front on the TW... I know if you poke around a little bit you can find it.....
 

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Hey does anyone know offhand the similarities and or differences between the BW and TW engine?



I'm guessing the sprocket shaft isn't as long to offset the rear tire, ( the BW has a jack shaft built into the swing arm ) and the trans gearing...



From the looks of it, they look almost identical.



Figured I can put this out there and perhaps this can possibly expand the pool of parts we can all source from....



Boy does this look like fun!!!



Any one have the BW fever too?





Yamaha BW200 by Richard Todd Giordanella, on Flickr
 

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I traded my Big Wheel for My TW. I think I got the better end of the deal. They are a fun bike, but the TW is way more nimble and not near as sluggish on narrow trails.
 

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Some years ago I've bought 2 BW200 on ebay. But they were stolen, before the selling was completed.



I am really sure, that there are no differences between the TW200 and the BW200 (except the sprocket shaft).
Sorry to necropost but I started a thread to get some info but I am realizing I should have searched more (rookie mistake). Macbig2k1, I am working on an '87 BW200 and I would like to upgrade the clutch and transmission to XT/TTR components, but I want to keep the kick start and factory compression release valve, as I am doing the YFB250 jug and 74mm sleeve from one of your threads. I was wondering if you could provide a list of the components I will need from the XT/TTR to make this happen. Thanks in advanced!
 

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After doing some gearing calculations I figured out switching to a six speed would only gain me around 2mph on my top speed and not really change my distance between gears a whole lot, so I ended up just buying an '86 TT225 clutch assembly to make the stock bottom end a 6 plate clutch and called it good.
 
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