Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > General Forums > General Discussions & Announcements

General Discussions & Announcements General Announcements, General Questions, e.g. What bike do I buy?, etc.


Reply
 
Thread Tools Display Modes
  #11  
Old 05-08-2020, 10:27 PM
reidy reidy is offline
Member
 
Join Date: Dec 2016
Posts: 17
Default

Another old mod is to take 100mm or so off the silencer or to buy yourself a shorty for the bike. Shorter silencer will give you better throttle response and bottom end snap but with the sacrifice of some top end. But given the type of slow technical riding that most of us do sacrificing top end for better bottom is a small price to pay.


Reply With Quote


  #12  
Old 05-09-2020, 12:31 AM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 2,062
Default

Quote:
Originally Posted by reidy View Post
Another old mod is to take 100mm or so off the silencer or to buy yourself a shorty for the bike. Shorter silencer will give you better throttle response and bottom end snap but with the sacrifice of some top end. But given the type of slow technical riding that most of us do sacrificing top end for better bottom is a small price to pay.
Bollocks. Just makes it noisier and loses land access as a result. People equate noise to power. I've added extra muffler section to a high performance 2 stroke racebike where noise restriction was quite stringent and back to back dyno made zero difference.
__________________
'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
Reply With Quote
  #13  
Old 05-09-2020, 05:34 AM
reidy reidy is offline
Member
 
Join Date: Dec 2016
Posts: 17
Default

Quote:
Originally Posted by (F5) View Post
Bollocks. Just makes it noisier and loses land access as a result. People equate noise to power. I've added extra muffler section to a high performance 2 stroke racebike where noise restriction was quite stringent and back to back dyno made zero difference.
🤣🤣🤣 100mm off doesn't add that much more noise and it only adds to throttle response not power to the bike. A shorty will make the bike louder but no loader than a worked up 4 stroke! If anything to your theory then the 2 stroke MX bikes must be doing it all wrong when they're all about bottom end punch.
Reply With Quote
  #14  
Old 05-09-2020, 11:29 PM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 2,062
Default

In typical applications there is 200mm of Stinger of smaller diameter preceding the muffler or link pipe. But believe what you want to.
__________________
'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
Reply With Quote
  #15  
Old 05-10-2020, 12:19 AM
Jakobi's Avatar
Jakobi Jakobi is offline
Super Moderator
 
Join Date: Oct 2010
Location: Australia
Posts: 7,994
Default

Quote:
Originally Posted by (F5) View Post
In typical applications there is 200mm of Stinger of smaller diameter preceding the muffler or link pipe. But believe what you want to.
That's what people do!

I cut 100mm off my 2013 pipe. Made it sound louder. Made it spooge none! But didn't make it any more snappy.

Want some more bottom end? Get rid of the expansion chamber..

Since when do MX engines tune for bottom end? Most are after peak HP with an ability to get into the revs quickly!
Reply With Quote
  #16  
Old 07-19-2020, 01:19 AM
rvktm rvktm is offline
Senior Member
 
Join Date: Apr 2014
Posts: 128
Default

the best thing i ever did to get more grunt out of a gg 250 was a adjustable pv cover . didnt do much for the 300 i fitted it to. got a 4 ball 98 pv governor to try in my 05 .the works team had different springs .on ktm and beta the pv gov spring can be changed by undoing a bolt .disappointed that rieju didnt look to improve the pv adjustablity
Reply With Quote
  #17  
Old 07-20-2020, 02:21 AM
Doc Brown Doc Brown is offline
Senior Member
 
Join Date: Dec 2017
Location: Austria, Europe
Posts: 586
Default

Quote:
Originally Posted by Jakobi View Post
That's what people do!

I cut 100mm off my 2013 pipe. Made it sound louder. Made it spooge none!
Just saw that by chance and feel the urgent need to dig deeper into that, as I have a spooging problem...

So you say altering the silencer or even changing it(?) may solve the problem.
Reply With Quote
  #18  
Old 07-20-2020, 03:43 PM
swazi_matt swazi_matt is offline
Senior Member
 
Join Date: May 2010
Location: From Swaziland, Now Hamilton New Zealand the “look but don’t touch” enduro heaven
Posts: 2,334
Default

I did this to my "banana" exhaust as well, i forget the exact amount that was removed, but there is a formula somewhere for the optimum length of silencer as a ratio of the core diameter
__________________
2003 txt250 Pro
2013 Ossa 280i
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need a new radiator, any suggestions? 95jersey Enduro Engine - 2 stroke 12 05-15-2015 05:55 PM
GasGas UK's suggestions for more low end richgilb Enduro Engine - 2 stroke 11 07-12-2014 03:30 AM
50/50 tire suggestions? Why Z? Enduro Chassis & Body 3 05-22-2014 06:20 PM
Needle suggestions? siaknijustin Enduro Intake/Carburetion - 2 stroke 5 10-27-2012 07:19 PM
need a new air filter any suggestions.... dareuk Enduro Product Reviews 4 03-24-2010 03:05 PM




All times are GMT -5. The time now is 06:07 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org