| Title: | Welcome To The Radio Control Conference |
| Notice: | dir's in 11, who's who in 4, sales in 6, auctions 19 |
| Moderator: | VMSSG::FRIEDRICHS |
| Created: | Tue Jan 13 1987 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1706 |
| Total number of notes: | 27193 |
As long as we're on the topic of engines, I have a more specific
question. I would like to add a small engine to my glider, like
an .049, but there's quite a few types out there. Does anyone have
any recommendations?
What prompted this is I was at the Concord,MA field Sunday and saw
several motorized gliders. One them had a Cox Babe Bee, and the
guy was having a lot of trouble getting it started, and once going
it didn't seem to climb too fast. Another glider had a different
type of .049 and that thing climbed like a rocket (well, relatively
speaking). I'm willing to spend more money to get a better engine.
Dave Walter
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 321.1 | re: .049's | MJOVAX::BENSON | Mon Oct 05 1987 14:50 | 23 | |
Just a few thoughts from someone who spent a lot of time flying
sailplane/.049 combo.
1) My setup was a 78" sailplane with top power pod and one of two
engine setups:
an old .049 with internal tank shunted to a 2 oz auxilliary
& a fairly new .049 with internal tank .
2) Neither one had throttle; it's not needed. If you use an external
tank, don't put more than 1 oz in it- that runs 10 minutes as it
is! You don't need the hottest .049, but don't go for the $10.99
specials either. I paid about $20-22 each for mine. (Sorry, I just
don't remember the Cox name for each.)
3) Don't expect (or need) hot performance for just getting to altitude.
It's OK to go slow with a sailplane (isn't that why we fly them,
for relaxation), indeed, mine was a little squirly at hand launch
for about 15 secs. until I built up some airspeed.
4) Finally, re: starting. DON'T BE AFRAID TO PUT A 1-1/2' SPINNER
ON THEM AND USE YOUR STARTER FOR 10 SECS OR SO, UNTIL THE THING
GIVES UP AND SUBMITS TO BEING STARTED!!! There is no need to become
frustrated with this engine!
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| 321.2 | More .049 stuff | MJOVAX::BENSON | Mon Oct 05 1987 14:53 | 5 | |
1) Thats a 1-1/2" spinner, 1-1/2' is slightly oversize.
2) The old engine had a much more open exhaust port and was easier
to prime, the new one had a sort of baffle that made it more difficult.
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| 321.3 | BZERKR::DUFRESNE | VAX Killer - You make 'em, I break 'em | Mon Oct 05 1987 16:46 | 1 | |
wot ?? no more starter springs on .049s... ???? | |||||
| 321.4 | HOW `BOUT A MINI-ELECTRIC STARTER??? | MAUDIB::CASEYA | THE DESERT RAT RC-AV8R | Mon Oct 05 1987 18:26 | 10 |
I don't know if they're still available, but there "used" to be
a miniature electric starter (just like a Sullivan starter, but
smaller) made specifically for starting 1/2A engines. The feeling
was that the stock spring-starters didn't do all that good a job
but the larger starters were, supposedly, hard on the small engines
...bent cranks and the like, so they made this cute little 1/2A
starter. Ironically, the spring-starter concept works just great
on the Quadra-50 and similar giant gas-engines.
Al
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