Need for speed

[kevin]

Recently installed snider speed kit on my 182d
managed to gain 4 knots but lost my step
this was a 3 % increase in speed 139 - 143 knots
this implies a 9 % decrease in drag, i have definately noticed an
increase in range of approx 1 hr at 135 k cruise
aircraft picks up speed a lot quicker in descent , climb performance has also improved
We also sealed up as many gaps as possible in the cooling depatment but was limmited to caulking gaps with high heat silicone.
Contemplating installation of a flat plate to smooth the upper
inlet of the cooling air to the cowl, the cowl has a rapid increase
in area 1" behind the opening

Any ideas would be greatly apreciated i still need to pick up a few knots to surpass the debonair (locally owned and cruiseing at 143k)
i still plan to paint the aircraft as it currently is bare metal but need to be sure all the mods are installed before comenceing
with paint.
Also looking at getting the antena's out of the slipstream
was wondering if we could install the antena's in the wingtips
how would this affect the groundplane ?
Also going to blade vor antennas instead of the wiskers

i was wondering if anyone has any ideas on wing smoothing
or going to flush rivets on the upper wing surface

Any gains to be had in sealing control gaps? and what method
so as not to bind the control surfaces ?
thanks kevin

[n2099x]

Hi Kevin.

Are the airspeeds your quoting true or indicated? Flush or umbrella style fuel caps? I’m not familiar with snider speed mods I used Horton.

I have been looking at blade vor and transponder antennas. I have a flush riveted horizontal, I don’t know if it helped or not but It had to be reskinned so we flush riveted where we could. I also have Met-co Aire wing tips. Any interruption of airflow will slow you down, like leading edge dents or dings, dried bugs.

Do you have the IO470?

Glen

[kevin]

Hi Glen

All speeds are true with a normally aspirated o470

I removed the flush caps and installed the monarch umbrella
style caps after i suffered an engine out on take -off
it was the first flight with my new instructor in the first 5 min. of my ifr training , we got to 600 agl and the engine quit due to water , contrary to the expert opinion of the intructor i turned back and put it down on the strip , we had had excessive rain
in the days prior and i was sure an off field landing would have flipped us.

the olio was a little low so sumping the tanks didn,t show any water.
No more water with the monarch caps!!!

This plane has the wingxtol, horton and micro vg's installed
How did you install the metco-air tips with the cuff, must have taken some modifying?
Horton wouldn't sell me his equipment for a 1961 so i put on the knots2u kit and the snider for the flat gear legs

[n2099x]

Kevin 99X is a 1965 so I don't have cuff's. All you need is a IO470 and you will blow the doors off the debonair. I used to have Monarch caps then switched back to flush. The AD takes me about twenty minutes. I also have new bladders without wrinkles and preflight per the instructions for the "killer caps ". Overall I think the Monarch caps are best for most people.

Glen

[kevin]

Glen

How tough to make my old 0-470 to an io-470 ?
Is this a bolt on kit ? nothing that easy i would imagine!!
kevin

i have trying not to go to more power as the increase in weight and fuel burn would require larger tanks and reduce the utility,
by reduceing drag we get free speed increase, and climb and glide performance, increasing the range and utility of the plane.
but i have no data on the io-470 to know the penalty verses
performance

[kwmoore]

Kevin

Go to

http://www.260se.com/downloads.html

and download "260se engine information." It will tell you about the IO-470 and its comparison to both the O-470 and some other engine upgrade options.

[n2099x]

I went with the IO470 just because of those reasons. Fuel burn is the same or less due the efficiency of the fuel injection. If you have an engine monitor you can lean more accurately. By staying with a two bladed prop the weight gain can be offset by using the sky-tec starter. So I actually gained in take-off, climb, cruise and range. Cost is the only negative. It would take an engine transplant but no more carb ice. You need to talk to Todd about specifics.

Glen

[kevin]

Glen, Kevin M

Thanx for your imput , we do have have the 16 point analyzer
and a fuel flow so i guess the next step is to investigate the
fuel injection .
Tod's stc doesn't cover the 1961 models so i will have to see how tough it will be.

i hope to go to a bolt on conversion instead of a transplant
kevin B

[kwmoore]

There is an STC to boost the O-470 from 230 hp to 252 hp. Should let you sneak past the Debonair. John Jewell and I think Texas Skyways have more information.