Stock exhaust with FMF megabomb?

Thread Tools
 
Search this Thread
 
Old Aug 1, 2017 | 01:38 AM
  #101  
Subseageorge's Avatar
Senior Member
Joined: Sep 2012
Posts: 214
From: North Sumatra , Indonesia
1st Gear Member
Default

He, Said his mega bomb style header has a 1.5 " ID.
 
Old Aug 1, 2017 | 01:47 AM
  #102  
queen of spades's Avatar
Thread Starter
|
Senior Member
Joined: Apr 2016
Posts: 389
1st Gear Member
Default

Wonderful. Please follow up here. I am very interested. I know exactly what I am looking for in a muffler design.
 
Old Aug 1, 2017 | 01:51 AM
  #103  
queen of spades's Avatar
Thread Starter
|
Senior Member
Joined: Apr 2016
Posts: 389
1st Gear Member
Default

I do wish I could keep my existing megabomb and him make a silencer to fit that, built to my spec.
 
Old Aug 1, 2017 | 01:53 AM
  #104  
Subseageorge's Avatar
Senior Member
Joined: Sep 2012
Posts: 214
From: North Sumatra , Indonesia
1st Gear Member
Default

Yes, i will, I should have it in less than a week, So we will see. Labour here is so cheap. less than $10 a day for a skilled worker. I am assuming that keeps costs down.
IF we do get some made, i will arrange shipping to the US for you, im sure it wont be too expensive, What is the import tax rules in the US ?
George
 
Old Aug 1, 2017 | 01:55 AM
  #105  
queen of spades's Avatar
Thread Starter
|
Senior Member
Joined: Apr 2016
Posts: 389
1st Gear Member
Default

Shouldn't be that terrible, but let's see what he makes for you. Do you have a FMF megabomb already?
 
Old Aug 1, 2017 | 01:57 AM
  #106  
Subseageorge's Avatar
Senior Member
Joined: Sep 2012
Posts: 214
From: North Sumatra , Indonesia
1st Gear Member
Default

I have a FMF power bomb and Q 4 that i imported from the US.
 
Old Aug 1, 2017 | 01:59 AM
  #107  
queen of spades's Avatar
Thread Starter
|
Senior Member
Joined: Apr 2016
Posts: 389
1st Gear Member
Default

I would encourage him to be careful about marketing them with actual FMF stickers, especially if he intends to potentially sell them here on a wider scale.

If we can get him to build a muffler basically exactly what KTM uses with the offset end cap, but with a longer silencer body.. he might have a little gold mine there. Especially if the mufflers are exact fit so we can use with existing FMF headers... and the mufflers are durable... and quiet!
 
Old Aug 1, 2017 | 02:25 AM
  #108  
Subseageorge's Avatar
Senior Member
Joined: Sep 2012
Posts: 214
From: North Sumatra , Indonesia
1st Gear Member
Default

Yes , that is exactly what i was thinking, This is the land of copies, they are actually good tradesmen if you make sure they understand the quality you require. But not so good at designing things, just copy others,
 
Old Aug 1, 2017 | 02:34 AM
  #109  
klx678's Avatar
Senior Member
Joined: Aug 2009
Posts: 4,651
From: Delaware, Ohio
1st Gear Member
Default

Hey QoS, a thought. There is a company advertising baffles for straight pipes. It would be interesting to do a 2" mid pipe with one of their baffles in it (large diameter would possibly allow flow on par with a 1-3/8" head pipe. Then put on a nice can on the back.

Just a thought.
 
Old Aug 1, 2017 | 03:22 AM
  #110  
queen of spades's Avatar
Thread Starter
|
Senior Member
Joined: Apr 2016
Posts: 389
1st Gear Member
Default

Part of why the Megabomb helps reduce dB's slightly is that the exhaust waves ricochet around the inside of the expansion area and a little sound wave cancellation occurs. The Powerbomb's chamber is much smaller so it doesn't have the same effect on dB.

Same thing is happening with the KTM/Husky silencers on the newest models. about 6" of the end of the body is open. The perforated tube dumps into the open chamber then exits the end cap which is placed off set. Also, KTM adds additional rock wool dampening inside this open chamber.

It's not a perfect design but allows for the noise to cancel out a bit before leaving the system. That is exactly the kind of silencer I would design if I had access to a tradesman. Only, I would extend the main silencer body about 4 inches longer than stock to allow more silencing
 

Last edited by queen of spades; Aug 1, 2017 at 06:03 PM.



All times are GMT. The time now is 04:28 PM.