Welding Tips and Tricks

Hi guys, another two stroke project from me. I build these pipes during the summer in 2015. They were a total nigthmare to build as the upper pipes has to intersect to fit the beautiful Akrapovič silencers at the end. Everything is packed so tight They are made from 0.8mm thick cold rolled steel. Everything was done by hand, including cutting and rolling the sheet metal. It was absolutely one of the most difficult projects I have done. Here are some pictures.










Regards, Simon

looks like you have some serious talent.
beautiful job.
did you have something to copy from?
craig

Damn, looks amazing. You can make some money with that talent.

motox wrote:looks like you have some serious talent.
beautiful job.
did you have something to copy from?
craig

The geometry itself is copied from jolly moto, as I had no experience in calculation of exhast for 125cc. Shape and curves were all done by me, I help myself with a model made from a steel wire.

jolly moto?
craig

Unique performance!Beauty,Well done!

Nice work there man!
Good skill building project for sure.

motox wrote:jolly moto?
craig

Jolly moto is a company which produces aftermarket two stroke exhaust systems.

ill have to google them.
thanks
craig

i do have a RD 350 I'm working on. it would
be an interesting project to fab pipes for it
(but prob not TI)
craig

they are some bad ass pipes ! nice job keep that front end down !

Amazing.

Two strokes and welding, what a great combination. Love your work.



Kym

Beautiful! I'd love to hear them under hard acceleration. Can you tell me how you design the chamber dimensions? Is there a program for that?

Grburns09 wrote:Beautiful! I'd love to hear them under hard acceleration. Can you tell me how you design the chamber dimensions? Is there a program for that?

One of the most popular programs is Two Stroke Wizard...




Kym

Hi,
Very fine and wonderful job....bravo!!!!
BTW, where can get the Akrapovic silencers?
please advise.
Thank you

I have to comment here. You can spot a pro and an amateur very easy with "stroke" versus "cycle". There's no such thing as a "two-cycle" or "four cycle" motor.

Your options are "two-stroke cycle", and "four-stroke cycle". You're describing what happens in ONE cycle of the motor.

Sadly, manufacturers of lawn equipment are following the trend of crappy language, and calling their equipment "two-cycle" and "four-cycle".

Steve S

I have to comment here. You can spot a pro and an amateur very easy with "stroke" versus "cycle". There's no such thing as a "two-cycle" or "four cycle" motor.

you can tell pro by the AMA inspection sticker on his frame...
craig

motox wrote:I have to comment here. You can spot a pro and an amateur very easy with "stroke" versus "cycle". There's no such thing as a "two-cycle" or "four cycle" motor.

you can tell pro by the AMA inspection sticker on his frame...
craig

And he's the guy that sits with his crew while they work on his bike and watches instead of bouncing around to every team, trying to get someone to like him. Has never worked.

motox wrote:I have to comment here. You can spot a pro and an amateur very easy with "stroke" versus "cycle". There's no such thing as a "two-cycle" or "four cycle" motor.

you can tell pro by the AMA inspection sticker on his frame...
craig

Indeed. I noted that he said "two-stroke", not "two-cycle", throughout his comments.

Steve S

My Gawd,
I'd love to here that bad boy run!
Pete

Amazing

johndextr wrote:Amazing

Welcome, John.

Sorry for the delay in approving your first post. We encourage people to use the introduction page, because I and the other moderators look there first for new members. It takes a minute for us to read every new post in every thread.

Steve

Holy smokes!

Very, very nice work. Totally get how complicated this is. Routing through the frame and clearing bodywork ain't easy.

Do you still have patterns? I wouldn't mind having a go at some titanium ones for my 500. Something else to add to the list of projects!

Mark.