Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-25-2017, 04:34 AM   #11 (permalink)
EcoModding Apprentice
 
Join Date: Jun 2012
Location: Florida
Posts: 125
Thanks: 0
Thanked 11 Times in 9 Posts
Usually, even for larger motorcycles, they try to keep a 2ft length, just to prevent the flame from going back to the valves in case of lean burn.
The diameter really depends on the CC.
For a 300cc single cylinder, the tube dia should be about 1 inch; so I presume that 3/4 would be good for a smaller one.

You can get cheap mufflers online, but should you have the time to make one, just drill a hole in a 6-10" dia tin can (off center) on both the entry and exhaust side, stuffed with rockwool, and chicken wire to keep it at it's place (or a perforated pipe), and weld the can on the exhaust pipe.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-09-2017, 01:56 PM   #12 (permalink)
Master EcoModder
 
Stubby79's Avatar
 
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,041

'91 Miata - '91 Mazda Miata
90 day: 27.11 mpg (US)

'86 Fiero GT - '86 Pontiac Fiero GT

Purple Penny Pincher - '95 Pontiac Firefly Base
90 day: 43.68 mpg (US)

Jett-Black - '01 Volkswagen Jetta
90 day: 39.32 mpg (US)

Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)

Little Boy Blue - '05 Toyota Echo
90 day: 32.24 mpg (US)
Thanks: 39
Thanked 295 Times in 221 Posts
Ever get around to building this?
__________________

  Reply With Quote
Old 10-09-2017, 03:09 PM   #13 (permalink)
V8 guy
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 5,574

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Shocker - '11 Nissan Leaf SL
90 day: 130.28 mpg (US)
Thanks: 127
Thanked 1,357 Times in 1,001 Posts
I got the bigger 17.5kw generator so it's not crucial.
I would like to build it at least so the CO goes up and away from people.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white 240v evse mod, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 11-28-2017, 12:15 AM   #14 (permalink)
V8 guy
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 5,574

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Shocker - '11 Nissan Leaf SL
90 day: 130.28 mpg (US)
Thanks: 127
Thanked 1,357 Times in 1,001 Posts
My 17.5kw is broke down, so this is definitely back on the table.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white 240v evse mod, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 11-28-2017, 03:00 AM   #15 (permalink)
Master EcoModder
 
Stubby79's Avatar
 
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,041

'91 Miata - '91 Mazda Miata
90 day: 27.11 mpg (US)

'86 Fiero GT - '86 Pontiac Fiero GT

Purple Penny Pincher - '95 Pontiac Firefly Base
90 day: 43.68 mpg (US)

Jett-Black - '01 Volkswagen Jetta
90 day: 39.32 mpg (US)

Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)

Little Boy Blue - '05 Toyota Echo
90 day: 32.24 mpg (US)
Thanks: 39
Thanked 295 Times in 221 Posts
That sure is a lot of juice you're using. 17kw is about the max I could draw at home (heaters, oven, and everything else). 7kw would be enough to run the place as long as I payed attention to what was on at any given time.

I wouldn't want to pay the fuel bill on either, though!

__________________

  Reply With Quote
Reply  Post New Thread


Tags
exhaust, generator, primary tube

Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com