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micron vs allspeed

Joined: March 28th, 2010, 5:12 pm

March 28th, 2010, 5:59 pm #1

whitch exhaust is the best tuning exhaust for an fs1 is it an allspeed expansion or is it a micron expansion
mvh patrik from sweden
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Fs1eweb
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Fs1eweb
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Joined: June 6th, 2004, 1:11 pm

March 28th, 2010, 6:36 pm #2

There has been a lot of testing and if you have a look in the Tuning Forum you will see the answer is not that straightfoward! I think the answer is none of them, you need to get a pipe speciaaly fabricated
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vantage1e
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vantage1e
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Joined: April 6th, 2007, 4:21 pm

March 31st, 2010, 7:39 pm #3

Try 50cc tuning for a good performing pipe
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techno6fs1e
The 65mph Club Member
techno6fs1e
The 65mph Club Member
Joined: July 21st, 2005, 3:02 am

August 4th, 2011, 1:09 pm #4

A standard pipe is best as fitted to my 76 DX
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NAT 666
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NAT 666
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Joined: January 6th, 2007, 8:19 pm

August 5th, 2011, 4:42 am #5

I tested loads of different makes of exhaust prior to Darrell on the dyno nearly three years ago - Allspeed, Gibson ,Micron and several others - and a part from a homemade race pipe that BDK had made which prevented the centre stand fitting and was not practical for road use but produced lots of power at higher revs - it made my highly tuned bike bike put out nearly 3 bhp more but it was certainly not practical to fit and use .
I found that the original Yamaha exhaust was far better than all the so called known named expansion pipes- - basicly they were all noise and no go !
Most of them produced less power at lower revs- so my findings on the Dyno agreed with Jim's comments on the matter.
And Darrell's research on the dyno within the last couple of years which went further than mine by testing more different available period expansion pipes and also agreed with my findings.

Yamaha certainly knew what they were doing when they designed their exhaust pipe - the way you can really improve on it is with a tuner hand building you a pipe designed to your requirements
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kingtut
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kingtut
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Joined: May 19th, 2007, 5:08 pm

August 5th, 2011, 6:30 pm #6

How about a modified std pipe?
YB100 engined motorcycles cannot cure baldness, erectile dysfunction or grey hair.
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FizzyDoctor
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Joined: April 16th, 2006, 10:33 pm

August 5th, 2011, 7:28 pm #7

techno6fs1e wrote:A standard pipe is best as fitted to my 76 DX
Jim is right, I followed him for a few miles at Uttoxeter this year and at times he was doing 45mph

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rodger dockett
The 65mph Club Member
rodger dockett
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Joined: February 26th, 2011, 11:19 pm

August 6th, 2011, 12:03 am #8

find a steel or copper tube the same diam as the baffle, cut it to the same lenth of the stock baffle ,, put it up the stock pipe and run a screw up till it holds the tube in place.
up jet to a 160 main . take the air filter out ..
we call this a power stick .
It will give you better power than most all the micron or allspeeds type pipes ,, lots of over rev in each gear and look stock
The pipe will act like a stinger from the last baffle plate ,, rev rev rev ... will love to be thrashed
DONT WORK WITH THE EURO 30MPH BIKES THAT HAD THE BAFFLE PLATES ,,3 OF THEM FIXED TO THE BAFFLE .. but who has one of them?????

GARRY KENNY 87.5 MPH FIZZ CHECK OUT YOU TUBE ( 80MPH FIZZ)
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techno6fs1e
The 65mph Club Member
techno6fs1e
The 65mph Club Member
Joined: July 21st, 2005, 3:02 am

August 11th, 2011, 9:37 pm #9

FizzyDoctor wrote:
techno6fs1e wrote:A standard pipe is best as fitted to my 76 DX
Jim is right, I followed him for a few miles at Uttoxeter this year and at times he was doing 45mph
Ha LOL I get 52mph in 3rd gear ask Jobby as I said a standard pipe gets my DX over 60mph no problem
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rodger dockett
The 65mph Club Member
rodger dockett
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Joined: February 26th, 2011, 11:19 pm

August 12th, 2011, 1:00 am #10

i get 60 to 63 in 3rd over 85 in top ,, but im at 80cc with a 34 carb ???
GARRY KENNY 87.5 MPH FIZZ CHECK OUT YOU TUBE ( 80MPH FIZZ)
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