November 18th, 2017, 10:28 PM | #1 |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Powered by chicken wire
So, my Musarri exhaust was deafing me and basically annoying to all.
As it had a baffle in it already I was weighing up options on which direction to go, different aftermarket, stock or modify mine. Whilst I had it off the bike and pulled apart looking at how I could modify the internals of the Musarri I remembered a old dodgy fix. After rummaging around the garage I found some 5mm wire mesh, I rolled up about 400mm of it into a tube and twisted it down the "silencers" full length. I wasn't expecting much, hopefully just cut the edge of the "lawn mower at full noise" sound. The bike now is quieter, BUT, and a big BUT, the bike has noticeably more mid and top end. After swapping front and rear sprockets the bike would sit at 7300rpm in 6th at 100kph. Now the bike sits right on 7000rpm and is noticeably smoother. Moral of this story is I've been riding around for 12 months with my ears bleeding and down on power because someone fitted a exhaust and didn't tune for the change. Now I'm back to wondering what to do with it again, I might have a drink, that will fix the issue for now. |
|
November 19th, 2017, 06:48 AM | #2 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Good deal that you made an improvement, but I'm confused because I think you're saying that making a change to the exhaust system changed your overall drive ratio.
|
|
November 19th, 2017, 10:08 AM | #3 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Yeah, not sure how muffler packing changes gearing?
I remember in '80s, lots of aftermarket mufflers used fibreglass or steel wool. Kinda annoying that the stuff would get blown out and you'd have to repack. |
|
November 19th, 2017, 01:24 PM | #4 | |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Quote:
It still doesn't make sense really but for some reason it does have the engine more at ease. |
|
|
November 19th, 2017, 01:27 PM | #5 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
Chicken wire... It's like duct tape with holes.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
November 19th, 2017, 02:28 PM | #6 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
"it had me baffled"
|
1 out of 1 members found this post helpful. |
November 19th, 2017, 02:30 PM | #7 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
|
obvious no one is screening these posts
__________________________________________________
gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
1 out of 1 members found this post helpful. |
November 19th, 2017, 02:35 PM | #8 |
Cat herder
Name: Gort
Location: A secret lair which, being secret, has an undisclosed location
Join Date: May 2009 Motorcycle(s): Aprilia RS660 Posts: A lot.
Blog Entries: 6
MOTM - Jul '18, Nov '16, Aug '14, May '13
|
__________________________________________________
I am NOT an adrenaline junkie, I'm a skill junkie. - csmith12 Nam et ipsa scientia potestas est. Heri historia. Cras mysterium. Hodie donum est. Carpe diem. |
1 out of 1 members found this post helpful. |
November 19th, 2017, 03:06 PM | #9 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Not only doesn't it make sense, it's impossible. One explanation is your tachometer's calibration changed for some reason unrelated to your exhaust change.
|
|
November 19th, 2017, 05:09 PM | #10 | |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Quote:
Maybe the chicken wire not only fixed my noise and power issues, it seems to have recalibrated my tach. Maybe the chicken wire has bleed my brakes, changed my pads and put on some new tyres, I hope it has also done my valves, that would be sweet. I'm thinking about making some underpants out of chicken wire and reap the obvious benifits, the missus will be well pleased. |
|
|
November 24th, 2017, 12:01 AM | #11 |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
So, although the chicken wire was doing some Harry Potter stuff to my bike (my daughters diagnosis of the chicken wire results) I grabbed some new packing from my local bike store.
$18.00 for a bag, I packed (jammed) about half in and started it up, straight away the sound was more muffled even with the baffle removed, but still to loud. I stuck the baffle in a did a blocky, better than the old packing, chicken wire and baffle but still sort of annoying as my OCD was just starting to kick in. So, back in went the chicken wire mesh. The bike sounds nice now, from idle to redline, it seems to have kept the magic from the initial instalation of the chicken wire. Sadly I believe the brakes, tyres or valves have not had any benifit from the documented (lol) magic that the chicken wire has obviously achieved. The bike is still running at a lower rpm at 100kph than it was before the magic occured. All magic aside, it seems my bike and it's fueling is loving the change in restriction the chicken wire is giving. If anyone smarter than me (pretty much anyone over the age of 5) can shed some light on this I would be extremely grateful. If anyone needs some chicken wire with magical properties I've got enough to make another tachometer calibrating silencer baffle. |
|
November 24th, 2017, 12:11 AM | #12 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
|
I understand the mathematical issue that other members are having. But I also believe, if there is no problem, then nothing else needs to be done.
Is the bike happy? - check Are you happy? - check
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
|
November 24th, 2017, 01:54 AM | #13 | |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Quote:
I'm not to concerned though. On a side note my new chicken wire underpants don't seem to be having the same effect.......sadly. |
|
1 out of 1 members found this post helpful. |
November 24th, 2017, 06:35 AM | #14 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
|
Wear earplugs, the wind noise is harder on your ears then your exhaust.
|
|
November 24th, 2017, 07:20 AM | #15 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
I'm not clear on where this chicken wire is. Did you take any photos?
|
|
November 24th, 2017, 07:35 AM | #16 |
ninjette.org member
Name: Russ
Location: California
Join Date: Mar 2015 Motorcycle(s): '12 EX250JC Posts: 25
|
might actually be speedometer fickle.
I do know that during the winter, my speedometer is a little sluggish when I first get on the highway. Ie, when I know Im doing 85-90, the speedo reads 79ish. Then after running for a while to and then sitting near hot exhaust headers, my speedo will get somewhat more accurate.
Perhaps OP is referencing his tach according to his speedo. The speedo is the old mechanical cable type, where as the tach runs off of pulses from the ignition box. If you speedo is sluggish, you will actually be traveling at a slower speed, thus the tach will also reflect a lower rpm. |
|
November 24th, 2017, 12:39 PM | #17 |
ninjette.org certified postwhore
Name: Kerry
Location: Ventura, CA
Join Date: Jan 2016 Motorcycle(s): Ninja650 Posts: A lot.
MOTM - Apr '18, Apr '17, Apr '16
|
This thread makes me giggle. I'm glad your bike is running so well and making you happy!
|
|
November 24th, 2017, 02:22 PM | #18 | |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Quote:
It's not due to temp, it's currently around 25 30 deg Celsius, bike was road through winter with no issues, it didn't get below 0 deg Celsius once here. I'm not down for ear plugs, if the noise is annoying me when my helmet is on I pity the people next to me who have to put up with it. The bike still has some noise, now it's just not Harley wanker with drag pipes loud. Sadly Ii had to stop wearing my chicken wire underpants, due to electrolytic corrosion, the gal was reacting with the brass in the moist conditions. |
|
|
November 24th, 2017, 02:38 PM | #19 | ||
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Quote:
Quote:
|
||
|
November 24th, 2017, 05:26 PM | #20 | |
ninjette.org member
Name: Mark
Location: Australia
Join Date: Feb 2017 Motorcycle(s): 2011 Ninja 250R Posts: 219
|
Quote:
I rolled the mesh up like a roll of, um, toilet paper, rolled up magazineor a joint 8f you are that way inclined, the exhaust still has a straight path, well sort of, it just has alot of things for the noise to bash against to cancel it out. When I finished it was like a 1.5 foot × 1.5 inch joint, it even had a happy ending. Disclaimer: No chickens were harmed during these shenanigans. |
|
|
November 24th, 2017, 11:32 PM | #21 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
|
Quote:
Chicken wire U-trou? Have you has a tetanus vaccination lately? I've heard of a guy getting really "wired" but this is extreme! Cheers, Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
|
|
November 25th, 2017, 07:30 AM | #22 | |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
|
Quote:
|
|
|
November 25th, 2017, 08:35 AM | #23 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
|
Quote:
Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
|
|
November 25th, 2017, 08:49 AM | #24 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Bill, although I've been conscious of protecting my ears since my teens, I didn't think of ear plugs in my early days of riding. In the last decade I've worn ear plugs, and find that I can hear sounds around me when riding just as well as without them. The plugs just lower all the noise to a safe level, and when I get home and take them out, I suddenly hear all the low level sounds around me as if I hadn't ridden that day.
The roll-up-insert-and-expand type foam plugs are available in different sound reduction levels. I like the yellow ones, but a friend uses grey ones that don't cut noise as much. So even with those cheap ones, you can choose the level noise you want. |
|
November 25th, 2017, 11:10 AM | #25 | ||
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
|
Quote:
Quote:
|
||
|
November 25th, 2017, 12:02 PM | #26 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
|
Quote:
Thanks again, Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[American Motorcyclist Association] - Near-perfect wire-to-wire effort gives veteran | Ninjette Newsbot | Motorcycling News | 0 | March 11th, 2015 07:40 AM |
[kropotkin thinks...] - 2014 Argentina Moto2 Race Result: Winning Wire-To-Wire | Ninjette Newsbot | Motorcycling News | 0 | April 27th, 2014 09:30 AM |
[kropotkin thinks...] - 2014 COTA Moto3 Race Result: A Wire To Wire Win | Ninjette Newsbot | Motorcycling News | 0 | April 13th, 2014 10:10 AM |
[sportrider - latest stories] - Chicken Hawk Racing's New Chicken Wrap Wheel Insulato | Ninjette Newsbot | Motorcycling News | 0 | September 10th, 2010 03:00 PM |
[motorcyclistonline] - Wiles Goes Wire to Wire at AMA Pro K&N Filters Grand National | Ninjette Newsbot | Motorcycling News | 0 | June 21st, 2010 06:40 PM |
|
|