Here out in Washington State, operating out of Arlington Airport which is 137' msl, and temps in the 60's and 70's, the 503 is quite adequate. The main issue is longevity and fuel burn. My dream engine in the Jab 2200, but unless I fall into a pile of money, the 503 is going to have to do for a while. Also, how much flying do you do? With 75-100 hours a year, the 503 might last quite a while, however, there is always a chance of sudden silence, so we are ALWAYS looking for a possible landing site. We try not to fly over large expanses of trees, water and rocks if at all possible, but it sure is fun to fly up to the San Juan Islands at about 4,000'msl with beaches as an option if something ugly happens.
The other reason we look at other engines is that we are experimental airplane pilots, and like experimenting!
Kess
----- Original Message -----
From: Kess
To: Titanaircraft@yahoogroups.com
Sent: Sunday, November 08, 2009 7:00 PM
Subject: [Titanaircraft] Re: Titan characteristics
--- In Titanaircraft@yahoogroups.com, "v2twin" <v2twin@...> wrote:
>
> So a fresh 582 wouldn't tote the load either??
>
> --- In Titanaircraft@yahoogroups.com, "motionaero2" <mgpanos@> wrote:
> >
> > I know how tempting it is to go with a 503-powered T2 as there are many out there that are very reasonabley priced. However, that should be the clue, too. The 503-powered T2 is at best a 2-seat plane on very cool days (less than 60), low altitude and with standard size or less people. As someone else mentioned, you will be at or very near WOT the whole flight, just because you need the hp to move the weight.
> >
> > Kimberly and I had a 618-powered T2 (the 618 was a 75hp version of the 582) and while it was fun to fly, it was only a 2-seater on days of under 70 degress. Any warmer than that and we had a very long takeoff roll and a shallow climb. We converted that some plane to a Jabiru 2200 and that resulted in a very fun plane to fly. Flying solo with the 618, I would see 500fpm climb (5000msl and a gravity-challenged pilot) and a cruise speed of 90-92 indicated. With the Jabiru 2200, I flew around all the time with the 100mph ASI pegged at over 100, and the climb was in the 900fpm range. Using an GPS and triangulating, I found the cruise speed at 2900 rpm was at or over 110 mph.
> >
> > Get a Jabiru 2200 or 3300 or Rotax 912s. Or, if you buy a 503-powered one, plan to convert to a Jabiru 2200.
> >
> > Mark
> >
> >
> > --- In Titanaircraft@yahoogroups.com, "v2twin" <v2twin@> wrote:
> > >
> > > Thanks for the replies so far, very helpful. I've been flying a Piper Arrow 200 for the last few years, before that a number of Cherokees although I have owned three Ercoupes and three Tri-Pacers (all glide like a brick), soled a Cessna 182 and 310D on my 16th birthday, so I don't think the responsiveness of the Titan over the Challenger would be an issue. I fly off a 2500 ft grass strip in North Ga at about 1500 ft elevation. I think I am narrowing in on the Titan II, but not the stretch or SS model. I see a number of these equipped with the 503. Is that enough motor to carry two pax off a field like this?
> > >
> >
>
I love this site for discussion. I have a Thundergull 2K, and my hangar mate has a Titan (T2, I think). Both are 503 powered, and we did a head to head speed run-off recently and were neck in neck at about 115mph. His Titan has the jump seat removed as he is going to use it mainly as a single seater. For just one person, the 503 is great, and waaaay cheaper than the 4-strokes. We have lots of experience with the 503 on Phantoms, Hurricanes, Kolbs, and other assorted ultralights, and find it to be quite reliable. We are however, always looking for a 4-stroke cheap alternative, and have been testing a Kohler V-twin. The 28hp is marginal, even turning 4500rpm and about 40hp estimated. The next one will be the larger 40hp version. We also like the specs on the 65hp and 80hp Hirth 2-strokes, but rumor has it that they are not as reliable as the 503's. My Gull climbs better than his Titan, and we think that it's because of my 3 blade Ivo prop and 3:1 gearbox. The Titan has a 2 blade Ivo and 2.62:1 gearbox. Top end seems to be similar as our take-off weights are about 2lbs apart.
Kess
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