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Lou
Lap 5...this guy is "smokin'"!
Joined: 15 Nov 2007
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Location: Perth Ontario
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Suzukidave
THE WINNER! No one else in sight!!!!!
Joined: 16 Jan 2007
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Location: Florida
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 Posted: Wed May 14, 2008 11:39 am Post subject: |
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| Nice looking pipes , too bad they couldnt hydro form the down pipe to avoid the " lobster back " in that first taper section . |
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Lou
Lap 5...this guy is "smokin'"!
Joined: 15 Nov 2007
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Location: Perth Ontario
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| Posted: Wed May 14, 2008 12:28 pm Post subject: |
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I actually prefer the rat welded look. 
_________________
To invent, you need a good imagination and a pile of junk. |
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tripletriplenut
Hey, I need a bump here....
Joined: 11 Apr 2008
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Location: ont. Canada
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| Posted: Wed May 14, 2008 2:08 pm Post subject: |
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| i was thinking of hydro forming the header pipe once i am satisfied the the pipes are doing what is expected of them. would dramaticly cut down on welding time.i already have the equipment to do it. |
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Suzukidave
THE WINNER! No one else in sight!!!!!
Joined: 16 Jan 2007
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Location: Florida
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| Posted: Thu May 15, 2008 12:39 am Post subject: |
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| Lou wrote: | | I actually prefer the rat welded look. |
Yeah , its a classic look but the sections like that really messes with the flow both going out and the return pulse .. smoother the better . |
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TeeZed
Site Admin
Joined: 27 Dec 2006
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Location: SW PA USA
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| Posted: Thu May 15, 2008 1:06 am Post subject: |
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Hi Guys,
I have a later (mid-late 90's) TZ-125 pipe which has 40 or so individual pieces welded. I always thought it is a "piece of art"!
Don
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For ME? It's simply about the bikes and the people. Nothing else. |
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Rob
Pulling away on Lap 2.......
Joined: 06 Feb 2007
Posts: 222
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Location: England
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| Posted: Thu May 15, 2008 8:28 am Post subject: |
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| Quote: | | Yeah , its a classic look but the sections like that really messes with the flow both going out and the return pulse .. smoother the better . |
Having tested the same spec pipes, one set with lobster back bends and one set with press formed bends we got no difference in horsepower from either set. It is also interesting to note that many of the last GP 500,s had fully fabricated pipes and I am sure if they had thought there was an advantage to smooth front bends thay would have made them that way. After all they had the budgets to make whatever they thought would give them any advantage over their rivals.
As someone who makes pipes and fully fabricates them I think the main advantage of pressure formed bends is more for the ease of fabrication than any difference in power. I recently repaired two sets of kit pipes for a tz 250 V twin, both made here in the uk and both highly recomended, and it was interesting to note that one set had pressure formed front bends whilst the other set were fully fabricated.
At the last crmc round here in the uk where there were four different winners in the four tz 350 races ( shows how competative the class is with over 30 riders on the grid on tz yamaha,s ) 3 out of the four winners were using my pipes (fully fabricated front bends) which in my book says they work pretty good to me.
Rob |
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Suzukidave
THE WINNER! No one else in sight!!!!!
Joined: 16 Jan 2007
Posts: 699
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Location: Florida
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| Posted: Thu May 15, 2008 11:59 am Post subject: |
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| Its hard to beat the facts :~) i guess the hype on smooth designed chambers is more of a selling feature than real world need . Thanx for the feedback on your design as i am also going to be needing custom chambers soon for a 2 stroke triple project and knowing now that smooth bend on the first cone isnt really all that critical .. Dave |
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Walms
Mixing up the fuel....
Joined: 15 May 2008
Posts: 16
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| Posted: Thu May 15, 2008 7:14 pm Post subject: |
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Hey guys, just found this place... More triple talk  |
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Lou
Lap 5...this guy is "smokin'"!
Joined: 15 Nov 2007
Posts: 395
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Location: Perth Ontario
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| Posted: Fri May 16, 2008 3:34 am Post subject: |
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Hey buddy...I think you now know all my hide outs...
_________________
To invent, you need a good imagination and a pile of junk. |
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Walms
Mixing up the fuel....
Joined: 15 May 2008
Posts: 16
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| Posted: Fri May 16, 2008 10:56 am Post subject: |
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Get that cnc going Lou, another way would be to make the headers would be some soft tooling...  |
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Walms
Mixing up the fuel....
Joined: 15 May 2008
Posts: 16
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| Posted: Sat May 24, 2008 1:09 am Post subject: |
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| Rob wrote: | | Quote: | | Yeah , its a classic look but the sections like that really messes with the flow both going out and the return pulse .. smoother the better . |
Having tested the same spec pipes, one set with lobster back bends and one set with press formed bends we got no difference in horsepower from either set. It is also interesting to note that many of the last GP 500,s had fully fabricated pipes and I am sure if they had thought there was an advantage to smooth front bends thay would have made them that way. After all they had the budgets to make whatever they thought would give them any advantage over their rivals.
As someone who makes pipes and fully fabricates them I think the main advantage of pressure formed bends is more for the ease of fabrication than any difference in power. I recently repaired two sets of kit pipes for a tz 250 V twin, both made here in the uk and both highly recomended, and it was interesting to note that one set had pressure formed front bends whilst the other set were fully fabricated.
At the last crmc round here in the uk where there were four different winners in the four tz 350 races ( shows how competative the class is with over 30 riders on the grid on tz yamaha,s ) 3 out of the four winners were using my pipes (fully fabricated front bends) which in my book says they work pretty good to me.
Rob |
Thanks for the input Rob! That's good info to know.
Is it true to say sound waves react different than gases and fluids to changes in direction?
I read somewhere it's more important to focus on a perfectly round cross section. What I mean by that is a dent can be more harmful that what it appears. Does this make sense? |
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tripletriplenut
Hey, I need a bump here....
Joined: 11 Apr 2008
Posts: 35
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Location: ont. Canada
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| Posted: Sat May 24, 2008 1:57 pm Post subject: |
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| did you dent those pipes? wheelie wipe out? |
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Walms
Mixing up the fuel....
Joined: 15 May 2008
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| Posted: Tue May 27, 2008 2:52 am Post subject: |
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No dents....yet  |
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Lou
Lap 5...this guy is "smokin'"!
Joined: 15 Nov 2007
Posts: 395
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Location: Perth Ontario
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| Posted: Sat May 31, 2008 1:09 am Post subject: |
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does this pipe make me look fat 
_________________
To invent, you need a good imagination and a pile of junk. |
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