Author Topic: 2015 models, emission upgrades/addons, phase outs, re-tests, nothing??  (Read 909 times)

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Offline KilliansRedLeo

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There are lots of things the EPA can do 'just because' including forcing manufacturers to absorb so much expense to market their products in the US, that it no longer makes economic sense to offer a particular segment of their product line here. Albeit the larger displacement saws are such 'low number' product, that that alone may have an impact on the decision to offer or not to offer a particular product any longer. Problem being that the manufacturer will pass the cost of complying with EPA regs to the end user making an already low number product even more expensive.

The EPA is a bit out of control, and uses its' power to control things it has no business sticking its' nose into. Wait until you have to replace your freezer and the one you want can't be bought in the US because its' packaging does not meet EPA standards for disposable items. Don't laugh, this actually happened to a fortune 50 company, costing them over 100 million dollars.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline bloodontheice

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The OPE industry is 30 years behind the emission standards of the auto, and power sports
industries. 

Offline Eccentric

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The OPE industry is 30 years behind the emission standards of the auto, and power sports
industries. 

Good.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline neil

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If I may intervene a little.
I get what you guys are saying and can for see what Ed is trying not to say.

We saw a new 3120 in our race arena couple years back, he was a new guy learning the game. He bought 2 new saws from the states to compete with and in the 1st vid it show a heat with that new saw against myself and another race mate in Blue Gum.
We couldn't understand how a new saw could be so slow, the new guy had no idea as it was his 1st run with it and obviously never done any training 1st.

http://youtu.be/kjN4FMYkLs8

After viewing that footage later I realised it was the saw and the operator was just a passenger, so I rang him and asked if I could help him get that new saw somewhat competitive.
I got the saw and tested it myself

http://youtu.be/-ZjzHh0a3ak

I had never seen a 3120 as doe as it was then realised it was governed down  to 9000 somewhere instead of 12 which our Aussie saws are sold.
His chain was not helping but it still wasn't allowed to run out at all.

Since testing that day he allowed me to swap that Green module for a standard 272 module and I done the usual flywheel advancement. The difference it made was remarkable and the saw at least ran out to the 12- 13 mark making cutting much easier.
I can't find the vid after I changed the electrics, it made it equal to any Aussie stock saw with the same mods, then I gutted the muffler and played with the carby in which that stock saw looked like a 1/2 competitive saw for novice sawyers anyway.
He would not let me do it up internally as he wanted to get used to it 1st, he still is competing with it and likes it very much.

My whole point is the difference between new saws sold off in different parts of the world meeting different standards.

(1st vid shown only to show the sound of that saw and not to humiliate the competitor as he had to just wait on the saw.)

Offline 1manband

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The OPE industry is 30 years behind the emission standards of the auto, and power sports
industries. 

Good.

my view... both good and bad.

think 2T technology is mostly driven by changes in emissions standards.  seems the consumer ends up paying for the r&d.

don't want 2T's to go away, turning chainsaw GTG's into "olde tyme steam and engine shows" at the local county fairgrounds.  the tech advances keep 2T's alive??

big orange for example, just published a patent, (not thier's exactly, a bought patent license), for direct injection technology for hand held equipment.  i for one think this tech is interesting.  the ease (joke), of the way patents get granted these days without needing a working example (prototype) will most likely fuel the other manufacturers to come out with thier own DI with slight changes shortly (if they have not done so already).

link to recent 2014 here: 
http://www.4-traders.com/HUSQVARNA-AB-6498674/news/Husqvarna--Patent-Issued-for-Two-Stroke-Internal-Combustion-Engine-18202539/

IMO, this kind of tech helps keep 2T's alive.

-joe

hiatus

Offline aclarke

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The Aprilia 50cc scooter has been using their Ditech direct injection system for a number of n years now and it is much cleaner and produces big power for 50cc's  I'll see if I can find a link

Offline 1manband

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DI, will be huge improvement no doubt.  FI pales in comparison.

looking closer at the handheld di patent... there are some bugs to iron out... with cold starting, especially in cold weather.  it would require use of either FI or a small carb, or some type of case injection for initial starting purposes, before the DI kicks in for regular operation.  since it has no transfer ports (?) other than air, seems as if it would not build up transfer port fuel charge pre-heating like conventional motors?  as least thats what i see.

curious to see how aprilla addressed these things.

-joe
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Offline 1manband

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the husq patent differs from the aprilla.  the aprilla is a case reed, with no starting carb or FI.  husq has no reeds, needs a carb or FI, and still has at least one transfer port and exhaust port like a traditional piston ported motor.

husq patent claim says "ease of starting" which is vgood.

unlike the aprilla motor which cannot be modified for extra power, the husq may(?) potentially be modified, since it uses a carb to FI to provide extra starting fuel for the savvy power mongers, if it can be fed more fuel.  guessing that the DI will not be adjustable here folks, unless you are good with computer code and/or have a supply or higher #/hour injectors.

images of original patent application here:  http://www.freepatentsonline.com/20120024275.pdf
verbage here: http://www.freepatentsonline.com/y2012/0024275.html

actual approved patent here:  http://www.uspto.gov/web/patents/patog/week12/OG/html/1400-4/US08677954-20140325.html

hiatus

Offline 1manband

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Husqvarna 395 has just been recently taken down from kwf test site.

Data is now not available for view: 
http://www.kwf-online.de/deutsch/pruef/pruefergebnisse/aagw/motorsaegen/2980_13.pdf
hiatus

 

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