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mdnanwelch7(at)hotmail.co
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 Posted: Sat Feb 23, 2008 1:06 pm Post subject: Alternate 4 cycle engines |
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Kolb guys,
Seeing as how we've managed to "kick a dead horse" regarding VGs, so far beyond recognition, that our horse is barely recognizable as a former farm animal, I thought I'd pass along a recent email that was sent to the FlyGEO (engines) Yahoo! Group. Obviously, this guy flies a 2 person trike.
NOTE: Things in brackets "{{ }}" are where I've done the calculations and comments for you. The G10T refers to the GEO 3 cyl 1.0L turbo. THIS IS NOT MY EMAIL, IT WAS SENT TO OUR GROUP.
This COPY and PASTED EMAIL is as follows:
"Well I have the Air Creation with the GEO G10T. I had the 582 previously.
Performance is much better especially at "all up" weight.
My base is 5500ft MSL (Normal DA of around 7500-8200!!! )
Climb rate at MTOW is better than the 582 was one up!
Using cruise control and taking off at around 4500-4800rpm gives
around 650fpm (my 582's WOT). I also get around 5 liters/hr {{1.3 gal/hr}} (when flying with
around 30liters {{7.9 gallons}} of fuel. With a full tank the fuel is around 6-7 liters/hr {{1.6 to 1.8 gal/hr}}and my trike cruises at about 58mph hand off.
I'm totally happy with the engine as the fuel consumption is so low I
can almost do almost 750 miles (1200km) with one normal sized tank
(60l) {{19.8 gallons}}! Not to mention that at my altitude I have more power than a
912S!
For anyone flying from a high altitude I will not hessitate to
recommend Vassili's product. I will try the G13 {{GEO's smallest 4 cylinder}}
next but for now I'm happy to have the Turbo on the 1.0 liter 3 cylinder.
At one point I was climbing 1 bar in at about 85mph and VSI was off the
limits. {{"Climbing bar" means he was receiving one barometric boost, of 14.7 psi boost....this would place the performance of the 1.0 Liter GEO engine at virtually DOUBLE it's original 62 HP & 58ft/lbs of torque, to almost 120 HP & 116 ft/lbs!!!}}
I have had some minor things to sort out but mostly as I couldn't copy
anyones engine mount due to my boot / luggage area. The engine has a
rough spot at 1500. Cruise is 3600rpm one up (at) 5l/h {{1.3 US Gal}} +-50%
throttle.
My trike is not a light trike either, it weighs 225kg {{ 496 lbs.}} empty still less
than a 912. At idle the gearbox is louder than a 912 and in flight the
engine has a more throaty sound. Bystanders say it sounds like a V8
Chevy  .
The only negative comment I've had is it's size looks big compared to
a rotax. From what I've seen the size is misleading as it's not heavy
even though it looks big.
For the price what else is there really? Powerwise the engine fits
inbetween a 912S and a 914 - at my altitude.
I will post pics soon and be glad to answer any questions."
END OF HIS EMAIL.
It should be noted that when the turbo is added to the GEO engines that the fuel consumption GOES DOWN, while increasing performance substantially!! Supposedly cruise at about 4000rpm range should result to 2.0 gal/hr, less than the 2.25 gal/hr for the non-turbo GEO 3 cyl.
Just thought I'd pass this along.......
Mike Welch
MkIII
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sat Feb 23, 2008 1:23 pm Post subject: Alternate 4 cycle engines |
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Not to mention that at my altitude I have more power than a
| Quote: | 912S!
> At one point I was climbing 1 bar in at about 85mph and VSI was off the
|
| Quote: | limits. {{"Climbing bar" means he was receiving one barometric boost, of
14.7 psi boost....this would place the performance of the 1.0 Liter GEO
engine at virtually DOUBLE it's original 62 HP & 58ft/lbs of torque, to
almost 120 HP & 116 ft/lbs!!!}}
|
| Quote: | For the price what else is there really? Powerwise the engine fits
inbetween a 912S and a 914 - at my altitude.
|
> It should be noted that when the turbo is added to the GEO engines that
the fuel consumption GOES DOWN, while increasing performance substantially!!
Supposedly cruise at about 4000rpm range should result to 2.0 gal/hr, less
than the 2.25 gal/hr for the non-turbo GEO 3 cyl.
>
Mike W:
Sounds almost too good to be true.
How does he keep up with the demand for engines?
With half or less fuel burn and producing more power that the 912ULS, that
is a hard to beat combination.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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mdnanwelch7(at)hotmail.co
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| Posted: Sat Feb 23, 2008 4:24 pm Post subject: Alternate 4 cycle engines |
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John and others,
We shall soon see. It has ALWAYS been my understanding the fuel burn for the 1.0L 3 cyl. GEo engine is around 2.25 gal/hr at cruise. This is the normally aspirated engine, producing 62 HP, and around 58 ftlb of torque. From what I am lead to believe, the N.A. (normally aspirated) engine puts out the performance figures on par with a 582. I'm just going by what I'm told. I haven't got the in-flight data to back anything up. Without first hand knowledge, I don't testify to anything. But I guess there may be some that say they do have the data.
(This guy that wrote that email??)
GEO Metros (and Japanese Econ-boxes in general) have always been known for their ability to squeeze the crap out a gallon of petrol. Racing down the Interstate at 70 mph in an 1800 lb car, and getting 50 mpg must equate to something that is efficient. How that can actually cross over into an aircraft engine has yet to be seen by me. (Actually, I've had my GEO engine/Ivo prop mounted and running years ago, but not flying yet.)
(Besides, John, is it remotely possible I might be trying to just change the "subject de jour" (VGs)?)
Anyone flying a GEO that would care to chime in??? Bob? Vic in Sac? Anybody? Anybody??
Mike Welch
MkIII
| Quote: | From: jhauck(at)elmore.rr.com
To: kolb-list(at)matronics.com
Subject: Re: Alternate 4 cycle engines
Date: Sat, 23 Feb 2008 15:20:19 -0600
Not to mention that at my altitude I have more power than a
> 912S!
>
> At one point I was climbing 1 bar in at about 85mph and VSI was off the
> limits. {{"Climbing bar" means he was receiving one barometric boost, of
> 14.7 psi boost....this would place the performance of the 1.0 Liter GEO
> engine at virtually DOUBLE it's original 62 HP & 58ft/lbs of torque, to
> almost 120 HP & 116 ft/lbs!!!}}
>
> For the price what else is there really? Powerwise the engine fits
> inbetween a 912S and a 914 - at my altitude.
> It should be noted that when the turbo is added to the GEO engines that
the fuel consumption GOES DOWN, while increasing performance substantially!!
Supposedly cruise at about 4000rpm range should result to 2.0 gal/hr, less
than the 2.25 gal/hr for the non-turbo GEO 3 cyl.
>
> Mike Welch
Mike W:
Sounds almost too good to be true.
How does he keep up with the demand for engines?
With half or less fuel burn and producing more power that the 912ULS, that
is a hard to beat combination.
john h
mkIII
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slyck(at)frontiernet.net
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| Posted: Sat Feb 23, 2008 7:46 pm Post subject: alternate 4 cycle engines |
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I can't verify as to the accuracy but this is the chart that has been
used for comparison
between the 582 and the G10 Suzuki.
I think Richard Swiderski has this on his web site too.
(Has anyone heard from him lately?)
scroll down for the HP chart.
Scan2
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