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05-11-2012, 11:33 AM
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Join Date: Apr 2011
Location: san rafael
Posts: 110
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Quote:
Originally Posted by DonFromTX
But if you manufacture your own engine, YOU set the maximum continuous power value, right?.
And, is not that 120 knots max speed also only AT SEA LEVEL? (I don't know many people flying at sea level)
I did not know about the two 190 lb person rule, what else does the SLSA have for little known rules?
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sure if you MANUFACTURE the engine
but the OP was asking about installing an already manufactured engine
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05-11-2012, 12:02 PM
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Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,822
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That can be accomplished too. Jabiru for instance simply put a different data plate on their 3300 for those that wanted a lower max cont RPM. Of course nobody would EVER run it faster than the max, right?
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05-11-2012, 12:19 PM
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Join Date: Apr 2011
Location: san rafael
Posts: 110
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Quote:
Originally Posted by DonFromTX
That can be accomplished too. Jabiru for instance simply put a different data plate on their 3300 for those that wanted a lower max cont RPM. Of course nobody would EVER run it faster than the max, right?
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right, but the point is, Jabiru can do it, YOU can't.
you would have to ask Rotax to make a special data plate for your engine.
But this is all conjecture anyway, I doubt that the 912iS will make the plane any faster, it's still rated at the same 100HP.
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05-11-2012, 05:29 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Quote:
Originally Posted by tim walter
But this is all conjecture anyway, I doubt that the 912iS will make the plane any faster, it's still rated at the same 100HP.
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It's also up to 15 lbs heavier, and apparently has a bit less torque, even though the 100HP max remains the same. And it's more expensive, too. Apart from better fuel economy and not having to fiddle with carburettors, I can't see much real benefit in having a 912iS in the RV-12.
On the other hand, the UL Power series look very good, but it's still early days for them in the marketplace. Of course the problem with having more power is not complying with the 120kt LSA speed limit at continuous max power. Now, if you guys adopted our progressive Aussie LSA rules instead, there wouldn't be a speed limit, but you might have to keep a closer eye on Vne 
__________________
rgmwa
RV-12LR 912ULS
120346
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05-11-2012, 09:42 PM
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Join Date: Aug 2011
Location: New London, NC (near Charlotte), Boulder, CO
Posts: 271
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Quote:
Originally Posted by splitty
I think it would be very Remiss of Vans not to look at the Introduction of the 912iS Engine .....There will be an UL power RV12 flying in the not to distant furture as well..! Also there is a RV 12 fitted with a O235 flying around with out any probs so go Figure! Only my 2 cents worth..!
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I agree completely. It makes me quite unhappy to spend that amount of money on an engine with carburetors, when a modern engine is available. Surely Van's will reconsider. I think all of us who have not bought the engine yet should lobby for the new one.
Jerre
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05-11-2012, 11:55 PM
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Join Date: Oct 2008
Location: Napa, Calif
Posts: 274
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My first car was an MGTD with twin SU carbs. They were a bit of a pain to balance. The carbs on the Rotax are a piece of cake. They work well, and are generally reliable.
Why do I want to spend a bunch of money for the fuel injection? More to the point, why would Vans want to spend the time and money to accomodate the extra 15 pounds on the nose? The fuel injectin adds weight, cost, and it may take a while to cetermine if they are as reliable. The cost is not insigmifficant.
Do a search on this forum on the Rotax engine. I have not seen a single post by anyone complaining that it is too cheap! But if Vans were to post tomorrow that from here on out the price has gone up xxxx$ because you must buy the injected engine, the screams will be loud.
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05-12-2012, 07:38 AM
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Join Date: Jan 2006
Location: North Carolina
Posts: 57
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Quote:
Originally Posted by Mark Henderson
My first car was an MGTD with twin SU carbs. They were a bit of a pain to balance. The carbs on the Rotax are a piece of cake. They work well, and are generally reliable.
Why do I want to spend a bunch of money for the fuel injection? More to the point, why would Vans want to spend the time and money to accomodate the extra 15 pounds on the nose? The fuel injectin adds weight, cost, and it may take a while to cetermine if they are as reliable. The cost is not insigmifficant.
Do a search on this forum on the Rotax engine. I have not seen a single post by anyone complaining that it is too cheap! But if Vans were to post tomorrow that from here on out the price has gone up xxxx$ because you must buy the injected engine, the screams will be loud.
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You get better GPH with a EFI engine.
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05-12-2012, 02:17 PM
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Join Date: Apr 2011
Location: san rafael
Posts: 110
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Quote:
Originally Posted by NCGAPilot
You get better GPH with a EFI engine.
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not enough to be worth it
about 0.5gph
even at $5/gal that's only $2.50 an hour
the engine is at least $5000 more expensive
that's 2000 hours (TBO) to break even.
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