[englishnick]

no problems with heat so far , if i do get some i will put stainless deflector/ reflectors on the pipes wrap would just make it look untidy

 

[Peterb]

Very nice build englishnick. Like that you did it yourself and love the pic of your swing arm with dirt on it. Show bikes suck! Any chance you could post a video of it? Maybe idling, running through the gears then a nice fly by at 120 mph

 

[Weldangrind]

Thanks for the detail pics of the downtube and the rear sprockets. How did you come up with the idea to use an XV250 front hub?

 

[englishnick]

hours of looking at pics on the web of yamahas, it was decided from day one to keep as much as possible factory made , and that helps with matching parts from different models too saw the wheel on ebay ,and could see the bolt holes on the other side of the hub so checked on the net for discs found it was the same as the xs in pitch and boom twin disc with no messing about

 

[Weldangrind]

Genius! The brake hose splitter and the front fender look right at home.

Did you consider using an exhaust header from a thumper that has twin pipes with one cylinder? It would take a bit of fab work, but an XT350 header would do as a starting point. That would allow the exhaust to exit on the right side only, like a stock TW. A Honda XR400 header would be even better, because it's stainless.

 

[englishnick]

weldandgrind i did consider it for about 2 mins but then the twin thru frame idea kicked in , and that large frame tube makes it very hard to link the two outlets and still have clearance

 

[Weldangrind]

Did you use the TW down tube, or the XS down tube?

 

[englishnick]

xs tube and engine cradle with a new tube to the brg hub as in the pic

 

[Weldangrind]

Please dumb that down for me; I'm not sure what you mean by "new tube to the brg hub."

Also, do you have a pic that shows the welding of the rear engine cradle to the frame, near the foot pegs?

I haven't been able to stop thinking about this project!

 

[dozr62]

a guy in Australia made a tw with a sr 400 engine its one of few bikes that has a 4 inch wide rear tire would be the perfect motor swap but very expensive

 

[Hauken777]

https://m.youtube.com/watch?v=Fd-iC-Py-4Y

 

[jtomelliott49]

Hauken777, that is an awesome build. Wait for it..............the questions and requests for more info are coming.

 

[jtomelliott49]

And Englishnick, your build is very awesome. Your brain is making good decisions regarding braking, and not over tuning for max power. Will there be any problems regarding frame engineering caused by twice the size?

 

[romtik - The Wide]

Hey, you cant just throw some photos of a tw400 and not explain everything. please, detailed photos?

 

[Purple]

Four year old thread - welcome to the board ......

 

[englishnick]

still here been having fun on the bike , its 4 years on and it still pulls like a train will put some new pics of it to show its still in great condition , might be selling it soon as a new project is under consideration ,

 

[romtik - The Wide]

still here been having fun on the bike , its 4 years on and it still pulls like a train will put some new pics of it to show its still in great condition , might be selling it soon as a new project is under consideration ,

I would be very interested in buying it, if we could somehow get it to czech rep

 

[Lintzbikes]

still here been having fun on the bike , its 4 years on and it still pulls like a train will put some new pics of it to show its still in great condition , might be selling it soon as a new project is under consideration ,

Hi just new to this tw thing, did you sell your 400 ?