check out the new remote control Jockey Wheel SmartBar Canegrowers rearview170 Cobb Grill Skid Row Recovery Gear Caravan Industry Association of Australia
Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Why don't they build the gennies with a decent muffler?


Guru

Status: Offline
Posts: 626
Date:
Why don't they build the gennies with a decent muffler?
Permalink Closed


Why can't the manufacturer build a silent genny?

 

They can effectively muffle a 5L V8, so why not a piddling little 120cc fartbox?

 

There's plenty of call for some clever handyman to make and sell on e-Bay a clip/

clamp/screw on auxiliary bit of silencer for the more popular of the gennies.

 

The manufacturer does it with diesel heaters - why not the gennies?

 

 

 

 

B



-- Edited by Brodie Allen on Wednesday 10th of April 2024 07:30:44 PM

__________________


Guru

Status: Offline
Posts: 1487
Date:
Permalink Closed

A provocative and a antagonistic post.

Why don't you send a letter to Honda or Yamaha for a technologist answer.

They are the manufacturers of the most popular brands.



__________________


Guru

Status: Offline
Posts: 626
Date:
Permalink Closed

Plain Truth wrote:

A provocative and a antagonistic post.

Why don't you send a letter to Honda or Yamaha for a technologist answer.

They are the manufacturers of the most popular brands.


 What nonsense are you on about?

A very thoughtful and legitimate question I would think!

 

Maybe you prefer the noise?



__________________


Guru

Status: Offline
Posts: 1039
Date:
Permalink Closed

I would direct the question directly to the gennie manufacturers for their reason not muffling exhaust noise to your perceived expectations.

I can't see how Grey Nomads can answer this conundrum.



__________________

Cheers, Richard (Dick0)

"Home is where the Den is parked, Designer Orchid Special towed by Jeep Grand Cherokee Limited"

"4x250W solar panels, Epever 80A charger and 3x135Ah Voltax Prismatic LiFePO4 Batteries".



Senior Member

Status: Offline
Posts: 149
Date:
Permalink Closed

Because it would be almost as big as the rest of the device and because (unlike motor vehicles) there is no legislation restricting the noise and the pollution produced.
Cheers,
Peter

__________________

OKA196 DIY, self contained 4WD MH, 1160W PV, 326Ah of CALB LiFePO4 batteries, 1.3kW inv, 310L water, 350-450L diesel.



Guru

Status: Offline
Posts: 4009
Date:
Permalink Closed

Brodie Allen wrote:

Why can't the manufacturer build a silent genny?

 

They can effectively muffle a 5L V8, so why not a piddling little 120cc fartbox?


 Good question. Lawn mowers and chainsaws have mufflers, but they still make a big racket.



-- Edited by dorian on Thursday 11th of April 2024 04:45:42 AM

__________________

"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."

Lucius Cornelius Sulla - died 78 BC 

 



Guru

Status: Offline
Posts: 1891
Date:
Permalink Closed

In my military days I was a commander of an ACV (Armoured Command Vehicle) because of the amount of radio's it could flatten batteries quickly.

220px-M577_command_vehicle.jpg330px-M577_command_vehicle.jpg

The generator could be operated in the basket or it could be lowered to the ground and positioned away from the ACV.

When this was done we dug a hole in which a metal basket buried and a flexible pipe ran beteween the basket and generator to subdue the noise of the genny.



Attachments
__________________


Senior Member

Status: Offline
Posts: 438
Date:
Permalink Closed

I agree with Peter, the muffler would have to be disproportionately large to appreciably quieten a genny down, you wouldn't buy one if you had to transport it.

__________________

 

"life is too short to spend it with people who suck the happiness out of you"



Guru

Status: Offline
Posts: 626
Date:
Permalink Closed

A neighbour has a motor scooter step thru thing that is 250cc.

The muffler is only about double the size of the muffler on the Honda genny.

My mower likewise (Honda) ride-on.
Little combustion exhaust noise - you can hear
the general internals of the motor and gears.

Given the capacity of the Honda genny, I'm not convinced that the silencer
would need to be anything like the size mentioned at near the size of the
generator, or even ¼ that size.

Are you talking from fact or taking a guess?

Frosty

__________________


Guru

Status: Offline
Posts: 626
Date:
Permalink Closed

Here is a link to a site that has what would be usefull.
Looks like a clip-on that could be left lying on the ground.


https://www.aliexpress.com/item/1005005346535010.html?src=google&src=google&albch=shopping&acnt=631-313-3945&slnk=&plac=&mtctp=&albbt=Google_7_shopping&albagn=888888&isSmbActive=false&isSmbAutoCall=false&needSmbHouyi=false&albcp=19821179470&albag=&trgt=&crea=en1005005346535010&netw=x&device=c&albpg=&albpd=en1005005346535010&gad_source=4&gclid=Cj0KCQjw2uiwBhCXARIsACMvIU1ECr4SlS6kgZiI3l81JuMfFLhkEvQZ0K-NCV9MjfwJqhg1T-qq7NoaAny-EALw_wcB&gclsrc=aw.ds&aff_fcid=9625d077839945958059cdfa3985ffa8-1713049139959-02895-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=9625d077839945958059cdfa3985ffa8-1713049139959-02895-UneMJZVf&terminal_id=75459cd6f9374f16b52c870af0760c93&afSmartRedirect=y



There's dozens of alternatives if you go to

https://www.aliexpress.com/item/1005005346535010.html?src=google&src=google&albch=shopping&acnt=631-313-3945&slnk=&plac=&mtctp=&albbt=Google_7_shopping&albagn=888888&isSmbActive=false&isSmbAutoCall=false&needSmbHouyi=false&albcp=19821179470&albag=&trgt=&crea=en1005005346535010&netw=x&device=c&albpg=&albpd=en1005005346535010&gad_source=4&gclid=Cj0KCQjw2uiwBhCXARIsACMvIU1ECr4SlS6kgZiI3l81JuMfFLhkEvQZ0K-NCV9MjfwJqhg1T-qq7NoaAny-EALw_wcB&gclsrc=aw.ds&aff_fcid=9625d077839945958059cdfa3985ffa8-1713049139959-02895-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=9625d077839945958059cdfa3985ffa8-1713049139959-02895-UneMJZVf&terminal_id=75459cd6f9374f16b52c870af0760c93&afSmartRedirect=y

None of them "larger than the generator" !!!

 

Apologies for the copy/paste address. Can someone post how to distill it down for Mac?

 

Frosty (Brodie)

 

KNOCKERS START HERE:



-- Edited by Brodie Allen on Sunday 14th of April 2024 09:10:04 AM

__________________


Guru

Status: Offline
Posts: 4009
Date:
Permalink Closed

Brodie Allen wrote:

Apologies for the copy/paste address. Can someone post how to distill it down for Mac?


Truncate everything after, and including, the question mark.

https://www.aliexpress.com/item/1005005346535010.html

You can use this extension to clean the tracking garbage from your URLs (Firefox and Chrome based browsers):

https://docs.clearurls.xyz/1.26.1/

Safari users need to find their own.



-- Edited by dorian on Sunday 14th of April 2024 09:27:25 AM

__________________

"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."

Lucius Cornelius Sulla - died 78 BC 

 



Guru

Status: Offline
Posts: 626
Date:
Permalink Closed

Thanks Mr Gray!!

(How is the picture going)?

Frosty

__________________


Guru

Status: Offline
Posts: 4622
Date:
Permalink Closed

Gundog wrote:

In my military days I was a commander of an ACV (Armoured Command Vehicle) because of the amount of radio's it could flatten batteries quickly.

220px-M577_command_vehicle.jpg330px-M577_command_vehicle.jpg

The generator could be operated in the basket or it could be lowered to the ground and positioned away from the ACV.

When this was done we dug a hole in which a metal basket buried and a flexible pipe ran beteween the basket and generator to subdue the noise of the genny.


 The RAA (dropshorts) equivalent was to bury the gun position CP gen sets in a bloody big pit covered with iron sheets & sandbags, then exhaust them into a 44 gal drum of water.   

Sorry no pics .. security you understand ... LOL



-- Edited by Cupie on Monday 15th of April 2024 08:30:46 PM

__________________

See Ya ... Cupie




Senior Member

Status: Offline
Posts: 440
Date:
Permalink Closed

The only old grumps who whinge about generators are those too skint to own one.

__________________


Guru

Status: Offline
Posts: 4009
Date:
Permalink Closed

Bas + Eve wrote:

The only old grumps who whinge about generators are those too skint to own one.


 The only old grumps who whinge about people complaining about generators are those who are too skint to own a decent solar system.



__________________

"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."

Lucius Cornelius Sulla - died 78 BC 

 



Guru

Status: Offline
Posts: 705
Date:
Permalink Closed

Bas + Eve wrote:

The only old grumps who whinge about generators are those too skint to own one.


 

 

 

X2   Spot on.



__________________


Senior Member

Status: Offline
Posts: 149
Date:
Permalink Closed

I bought a generator 30 years ago. It now sits unused in the shed.
It has not been used for over 20 years because the solar is better in every respect.
Cheers,
Peter

__________________

OKA196 DIY, self contained 4WD MH, 1160W PV, 326Ah of CALB LiFePO4 batteries, 1.3kW inv, 310L water, 350-450L diesel.



Veteran Member

Status: Offline
Posts: 47
Date:
Permalink Closed

Ditto
OT I guess.
Nothing to do with money.


Our generator has been slowly rusting away in our storage locker for the last 10 years.
It would serve no purpose in our travels.
Solar and driving keep our battery charged.
The alternator pours 80A into the battery until full.
A 80A battery charger and capable generator would be a big (and noisy) beast to carry.



__________________

Neville
Mitsi Fuso MH 6.8m 3.9 TD. 180l fresh/grey - 600Ah LiFePO4 for truck/house - 800W solar - Victron electronics - 6kW Webasto diesel/electric water/air heater - 255l Samsung 230VAC fridge/freezer. Full-time travelling NZ.



Guru

Status: Offline
Posts: 1039
Date:
Permalink Closed

dorian wrote:
Bas + Eve wrote:

The only old grumps who whinge about generators are those too skint to own one.


 The only old grumps who whinge about people complaining about generators are those who are too skint to own a decent solar system.


Spot on.

As I am predominantly a 'free camper'...

I discarded my generator after setting up a solar system capable of powering all my 240V needs.

No need to lug around 30kg of gennie & 10kg of fuel.

 



__________________

Cheers, Richard (Dick0)

"Home is where the Den is parked, Designer Orchid Special towed by Jeep Grand Cherokee Limited"

"4x250W solar panels, Epever 80A charger and 3x135Ah Voltax Prismatic LiFePO4 Batteries".



Guru

Status: Offline
Posts: 705
Date:
Permalink Closed

I bought a generator 20 years ago. (Honda). Used regularly. both on the road and on occasions at home for power during outages.
Have solar as well on van and at home. So gives us for full deal and have never been inconvenienced by lack of power.

As I have stated many times, it is free choice.

__________________


Senior Member

Status: Offline
Posts: 149
Date:
Permalink Closed

Is that the same free choice that says you can play loud music and frighten all the birds and critters away in a bush camp site?
Those who think so usually have no idea of the effect of their selfish actions.
Cheers,
Peter

__________________

OKA196 DIY, self contained 4WD MH, 1160W PV, 326Ah of CALB LiFePO4 batteries, 1.3kW inv, 310L water, 350-450L diesel.



Guru

Status: Offline
Posts: 705
Date:
Permalink Closed

Yep, free choice, as long as one is not breaking the law. To noisy, to smoky, move away. Have never noticed any Birds or critters running for cover when my genny is on.
But, as you have said on previous occasions, they will be banned (soon). Until then (and I suspect never) I and others who favour the benefit of generators will continue to use them.

Cheers
Aussie1

__________________


Guru

Status: Offline
Posts: 1179
Date:
Permalink Closed

Back to the original post, it is more than likely that to muffle a tiny engine like those on a small portable generator, would reduce the power of the engine beyond what could be considered reasonable. Whilst some back pressure on an engine can be slightly beneficial, too much can destroy performance. If you want the ultimate demonstration of that block the exhaust pipe up and see how long the engine will run. Not very long. Hence mufflers are a balancing act between noise levels and performance. On a large powerful engine, a manufacturer can afford to throw away a handful of horse power to make the engine quiet. On a race car the first thing you do is have the most free flowing exhaust you can get away with without overstepping track noise limits and the reason is it is pretty much free horsepower. So to muffle a small gennie down to what the OP would like could likely see the motor not being able to perform at what is needed and a much larger and less portable motor would be required.

__________________

Greg O'Brien



Guru

Status: Offline
Posts: 705
Date:
Permalink Closed

Thank you Greg for brining this back on track. Very good points.
There is, in my opinion, way to much time spent on "emotional" feelings about the use or non use of generators.

__________________


Senior Member

Status: Offline
Posts: 441
Date:
Permalink Closed

Aussie1 wrote:

Yep, free choice, as long as one is not breaking the law. To noisy, to smoky, move away. Have never noticed any Birds or critters running for cover when my genny is on.
But, as you have said on previous occasions, they will be banned (soon). Until then (and I suspect never) I and others who favour the benefit of generators will continue to use them.

Cheers
Aussie1


 x2



__________________

Age does not weary us, makes us go travelling more



Guru

Status: Offline
Posts: 1426
Date:
Permalink Closed

X3

__________________

I reserve the right to arm bears :)



Chief one feather

Status: Offline
Posts: 17347
Date:
Permalink Closed

I'm not sure what all the fuss is about really? I have used a Gennie on and off now for the last 14 years BUT always between 2am and 4.00am when everyone is asleep and can't hear it. Two hours is enough to top up batteries if needed etc.


Keep Safe on the roads and out there.

__________________

Live Life On Your Terms

DOUG  Chief One Feather  (Losing feathers with age)

TUG.......2014 Holden LT Colorado Twin Cab Ute with Canopy

DEN....... 2014 "Chief" Arrow CV  (with some changes)

 



Guru

Status: Offline
Posts: 626
Date:
Permalink Closed

This thread was supposed to be about the mechanics of generators and noise.

Seems we have "generated" a lot of irrelevant tok tok about how we don't need them
and those that do are "selfish" and likely in need of psychological regulation!

Well there's 10's of thousands of older caravans out there providing countless days
of pleasure and release from everyday cares for some that just dont have $5 to $10 thousand
to convert to solar. Lots of mums and dads with a couple of kids are never going to
be likely to spend up big on solar conversions. The genny is the alternative.

A small plug-in supplementary muffler would make them less "selfish" and quieter
in the great outdoors so that the REALLY selfish amongst us will not be inconvenienced.

While we are at it, we might ban human walks etc in Nat Parks because the use of them
frightens the wildlife!

It's not rocket science - see the posts that I have made itemising numerous examples
of small mufflers that would assist older vans to move from noisy to less noisy.
Don't need the hypocrisy!

B

__________________


Guru

Status: Offline
Posts: 1955
Date:
Permalink Closed

I don't understand how everyone uses so much power that they need a generator to survive. I have 150 watt solar panel on the roof and a single 120 amp battery .

When not on mains, the fridge and hot water run on gas and the idiot box on 12 volt. I have two coke can inverters that charge the laptop, phone and modem and run the 12 volt fan if hot. If cold, I have a 12 volt blanket for the cot.  I cook outside on gas or the butane stove

On one occasion only, after several days of rain during winter, the battery looked a bit low so I hooked the Anderson plug into the car and let it idle for about ten minutes. Problem solved and back to business.

It must be for hair dryers, air con and watching Home and Away 24 hours a day as I can't see how you need so much power.



-- Edited by DMaxer on Wednesday 17th of April 2024 03:51:12 PM

__________________


Senior Member

Status: Offline
Posts: 149
Date:
Permalink Closed

And all for less than half the cost and half the weight of a generator and zero running cost. :)
Cheers,
Peter

__________________

OKA196 DIY, self contained 4WD MH, 1160W PV, 326Ah of CALB LiFePO4 batteries, 1.3kW inv, 310L water, 350-450L diesel.

1 2  >  Last»  | Page of 2  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
Purchase Grey Nomad bumper stickers Read our daily column, the Nomad News The Grey Nomad's Guidebook