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HomeMy Site✈️Aircraft🚁HelicopterHelicopter Main Discussion › Questions about a Good Generator?
04-03-2013 05:58 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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There is more than one Honda engine available?
There is 2 versions of that engine. One is for commercial use and doesnt have plastic parts. The one in the EU2000 is not that engine. Would imagine they used plastic parts for weight savings being a portable genset.
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04-03-2013 06:01 PM  6 years ago
SSN Pru

rrElite Veteran

Taxachusetts

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I wouldn't think the weight of a cam shaft would be a big weight driver. I think it was problably more to do with producability and cost versus weight savings.

We aren't talking about any other engine other than the one with the plastic camshaft which is what is in the EU2000i
Stupidity can be cured. Ignorance is for life!
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04-03-2013 06:12 PM  6 years ago
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Is it possible to buy the Honda EU2000i with the industrial engine inside?Avant RC
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04-03-2013 06:28 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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No the one the commercial version is in is not in the quiet series. Could be plastic is quieter on top of the weight savings?
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04-03-2013 06:44 PM  6 years ago
Kiba

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CA

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Given the moderate RPMs and very light valve spring pressures on the Honda EU2000 engine there is nothing wrong with the plastic cam. Also, the large diameter of the cam lobes and the rocker geometry on top of that is very forgiving of any lobe wear. Stick to the recommended service internals for valve adjustment and it's highly unlikely you'll have any problems over the lifespan of the generator.

The only time the plastic cam in the Honda is likely to pose a problem is if you run the generator hard with the air intakes obstructed and the engine overheats. If the plastic cams were a problem in typical operating conditions the internet would be flooded with complaints about failures.

That being said, I get that some people don't like plastic in their engines even if it is a suitable material and it was designed properly.
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04-03-2013 06:45 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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04-03-2013 06:49 PM  6 years ago
hootowl

rrProfessor

Garnet Valley, Pa.

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The only time the plastic cam in the Honda is likely to pose a problem is if you run the generator hard with the air intakes obstructed and the engine overheats.
Not to mention scoring the aluminum cylinder walls.
Wolves don't lose sleep over the opinions of sheep
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04-03-2013 06:50 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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http://www.bobistheoilguy.com/forum...&Number=2286781

Read this thread. Pay attention to what a user named Raffy says.
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04-03-2013 06:56 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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Given the moderate RPMs and very light valve spring pressures on the Honda EU2000 engine there is nothing wrong with the plastic cam
The light spring pressure is probably why they are known to lose compression from valves getting stuck open.
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04-03-2013 07:01 PM  6 years ago
Kiba

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CA

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Not to mention scoring the aluminum cylinder walls.
A bare aluminum bore is a no-no... the Honda bore is likely Nickasil coated which is extremely tough and durable. However, as many mid-90's BMW owners can testify sometimes when they reformulate gas the new fuel blends aren't too kind on the bore coatings and that can lead to premature failure. A traditional cast iron cylinder is certainly safer in the long run but a properly coated aluminum bore can have a very long service life provided a new fuel blend doesn't adversely affect it.

The cast iron bore will be a little more tolerant of dirt ingestion & abrasion wear as well; if dust scratches a nickasil coated bore you expose the soft and faster wearing aluminum underneath. If you scratch a cast iron bore it may hurt ring sealing with the scratch but at least there's still cast iron of the same hardness & wear characteristics under that scratch.
http://www.bobistheoilguy.com/forum...&Number=2286781

Read this thread. Pay attention to what a user named Raffy says.
I read that quite a while ago when I was researching what generator I wanted to purchase. There are tens of thousands of Honda EU2000s in service and very few reports of plastic cam failures. If the Honda plastic cams were failing regularly we'd hear as much about that issue as we do about Castle speed controllers catching fire.
The light spring pressure is probably why they are known to lose compression from valves getting stuck open.
Having already done a valve adjust on my Yamaha EF2000 I can say that the Yamaha EF2000 has very light valve springs as well. Remember, we're talking about small engines that work at a moderate RPM with a very mild cam profile and have very small lightweight valves. Strong valve springs aren't necessary. The Yamaha isn't all roses either; I've read a few reports online of the Yamaha EF2000s breaking valvesprings & dropping valves requiring an engine rebuild.

I may own a Yamaha EF2000 but if I could have snagged a brand new Honda 2000 for the same $699 delivered I paid for my Yamaha there's a *very* strong chance my generator would be red instead of blue. They're both proven generators-- so rather than argue about "what ifs" I recommend you buy one, go field charge, fly, and have fun.
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04-03-2013 07:13 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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I read that quite a while ago when I was researching what generator I wanted to purchase. There are tens of thousands of Honda EU2000s in service and very few reports of plastic cam failures. If the Honda plastic cams were failing regularly we'd hear as much about that issue as we do about Castle speed controllers catching fire.
My point in that thread was more the fact the guy assumed it was metal cam like most people buying the Honda and dont know better. To be completely fair the cam failure mentioned in that thread IS NOT in a EU2000i. Point was that he goes on about 2000 not being an issue because it didnt have plastic cam like the econo Honda engine he mentions and then after he checked seems quite surprised and a tad uneasy finding it was plastic.

I do agree if it were huge deal we would hear more of it like we do Castle
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04-03-2013 07:20 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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I may own a Yamaha EF2000 but if I could have snagged a brand new Honda 2000 for the same $699 delivered I paid for my Yamaha there's a *very* strong chance my generator would be red instead of blue.
If in position of needing one and getting a great deal sure I would take either as well if I had not had the problem I had with my Honda I paid full price for to buy from local dealer. Buying one at their normal say wisesales price is no brainer for me Yamaha is my choice knowing what I know now about differences in build and features.

As I have said before anyone looking do alot of research on both and pick whichever you feel is right for you.
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04-03-2013 07:23 PM  6 years ago
stang281472

rrApprentice

Commack, NY

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A bare aluminum bore is a no-no... the Honda bore is likely Nickasil coated which is extremely tough and durable. However, as many mid-90's BMW owners can testify sometimes when they reformulate gas the new fuel blends aren't too kind on the bore coatings and that can lead to premature failure. A traditional cast iron cylinder is certainly safer in the long run but a properly coated aluminum bore can have a very long service life provided a new fuel blend doesn't adversely affect it.
The cast iron bore will be a little more tolerant of dirt ingestion & abrasion wear as well; if dust scratches a nickasil coated bore you expose the soft and faster wearing aluminum underneath. If you scratch a cast iron bore it may hurt ring sealing with the scratch but at least there's still cast iron of the same hardness & wear characteristics under that scratch.
Also I do have to agree with this
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04-04-2013 01:29 AM  6 years ago
rpat

rrElite Veteran

Weirton, W. Va.

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Kiba,
Where did you find the Yamaha for $699?
trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2
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04-04-2013 02:57 AM  6 years ago
Justin Stuart (RIP)

rrMaster

Plano, Texas

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My magnetic dipstick in the Honda picks up something metallic from the oil. So there is something ferromagnetic inside the Honda motor which wears.

I feel a little bit deceived like the Raffy guy on the other forum. Why use a plastic camshaft? Just because it saves a little bit of weight? Or is there actually some real advantage to a plastic camshaft?
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04-04-2013 03:02 AM  6 years ago
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I found this video of the internals of the EU2000i.

Watch at YouTube

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04-04-2013 03:14 AM  6 years ago
stang281472

rrApprentice

Commack, NY

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Guess plastic oil slinger isn't such a great idea after all huh?
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04-04-2013 03:55 AM  6 years ago
blaster182

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Glen Cove, NY - USA

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does the yamaha have a aluminium one?
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04-04-2013 04:36 AM  6 years ago
stang281472

rrApprentice

Commack, NY

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http://www.wiseequipment.net/pages/...EF2000IS_-_ALL)

Splasher is on bottom of connecting rod and is metal.
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04-04-2013 05:02 AM  6 years ago
Ace Dude

rrProfessor

USA

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http://www.amazon.com/review/R3VR6W...e=&nodeID=&tag=

disapointed with yamahas service, November 22, 2011
By
Robt
This review is from: Yamaha EF2000iS 2,000 Watt 79cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant) (Lawn & Patio)
I purchased this yamaha over a honda generator based on my research and product reviews that i had read and beleived i made a wise choice however after 4 months the generator suddenly stopped one day, took it in to the local yamaha dealer for warranty in canada. After he took it apart found that a valve spring had broke and fallen into the engine and the valve also dropped in and went through the piston, and after he ordered the the parts to fix a 5 month old generator, Yamaha informed the dealer it was not covered under warranty as i had purchased it from Amazon. I wish i had purchased a honda
  
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