These pipes are steel right? What were you all welding with?
I'm gonna be straight using a TIG and flux right?
these pipes steel?
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here is what we built. Best pipe fitment ever.
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1
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pic 1
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2
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I did this. It was super easy, just cut it and weld it up. Make sure it seals, then mount it. This is not my moped btw.
Here are the pics:
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So how's it perform?
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I dunno, its way faster than the techno circuit that was one their before. I didn't do a before and after. It definitely doesn't perform any worse.
The headtube of an old bicycle fork is a great pedal bender BTW
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is the Baffle still in the Divergent Cone?
you just cut the stinger. that going to basically remove all Low End From the Pipe.
~SABAT!
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just removed the restricter plate and moved the stinger on my Techno Estirol, I don't know the performance gains / losses yet, because I haven't gotten to ride it. But I will post info as soon as I know it!
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sabat,
baffle is still in there
what? how and why is this going to remove low end?
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Also, if that is the case why didn't anyone say anything about what a stinger did in this thread.
What is the point of one?
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ALSO
how do you remove the 4mm from the primary cone?
Where do you chop first etc?
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back pressure, it keeps the fuel in the cylinder for longer.
think of of it as expanding gas, only so much can fit thru the stinger at a time, so alot of the unburned fuel gets back into the cylinder. it also seems to make the pipe longer.
im not a pro at this tho, im sure somone else here has a lot more insightful input, i just know less free flowing pipe = more torque and a more free flowing pipe means a better top speed aka rpms.
~SABAT!
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there has been way too many posts about unrestricting/hacking this pipe
http://www.mopedarmy.com/wiki/Unrestricting_a_Tecno_Estoril_Exhaust
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Ive posted this bike before but here you go again.
I dont remember seeing an improvement in speed.
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I would do this in a minute if I had a welder and all, so annoying how it hits my feet and all, size 12s and a estoril do not a smooth relationship make.
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and if you up the size of that piece win you straiten it it runs even better i lost about 23F at WTO win i upped that to 22mm id
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thicker stinger but shorter stinger its derestricted and the header is shortened 2 inches and dont comment on the bike i know it looks bad now its a work in progress try and zoom in on the pipe
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we did a tomos estoril (pointed it straight up) saw a 1mph gain from the derestriction. that was on a a35 top end on an a3. looks better now at least...
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ugly as can be but works well.
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