RE: DH-Comet
 

I ordered one and it's somewhere out in UPS land headed to Wisconsin!

I'm wondering if a set of Robart 510s will work for the mains?

RE: DH-Comet
 

Hi Tim:
Excellent idea, If you do find out could you please report back on that before I purchase this outfit

Thanks,,,,Dave

RE: DH-Comet
 

I ordered the 88" DH-88 from Hobby people, it should be here this Friday. Going to make her electric and lipo's. When they get the retracts in I'll get those to. The Comet has always been a favorite of mine.

Is there a way to add washout in an ARF? Or is it better to alter the tip like the exsamples in the Quiet Flyer magazine? I think the article was in last months issue.

RE: DH-Comet
 

if you have to add washout, you can just set both ailerons in a slight up position, kind of like spoilers. But I would just fly it as is, before modifying it.

RE: DH-Comet
 

I hear others talking about tip stalling. Is this due to pilot era or is it carracturistic(SP) of the plane. Any help would be appreciated.

RE: DH-Comet
 

"if you have to add washout, you can just set both ailerons in a slight up position, kind of like spoilers."

mmmdowning,

Stop!!! Don't add UP aileron! It will have the opposite affect of "washout" which will provide poor flight characteristics. Adding UP aileron will induce unnecessary drag as well. Washout is a slow speed characteristic. This is a racing plane! You won't win the race from England to Australia with induced drag.

I'm sure you are aware washout is to ensure lateral control about the longitudinal axis (roll) at a few knots above stall speed. This feature is basically to facilitate wings level stalls and landings. Washout is to twist the wing from center to tip with trailing edge up, while maintaining specified camber. By placing the ailerons in the UP position you will in effect create an upside down "under-camber." Bad ju-ju!

Spoilers do just that, spoil lift during descent. Upon landing and usually with additional wing panels lift dump is provided to put weight on the wheels. Chances are, if you are on final approach for landing and prior to flare you have the spoilers deployed take pictures because the resulting end will make for some neat "shouldn't have done that" photo's." Gliders and factory test flights excluded.

The DH 88 wing is fully sheeted so warping the wing is out of the question. Have you checked to see if maybe they didn't build it with washout? Probably have.

Good luck, Randy

RE: DH-Comet
 

I'm just curious. Who is talking about tip stalling? Is it someone who has flown this model?

Jim

RE: DH-Comet
 

Randy you are refering to an extreme situation with gliders with lots of spoiler deflection. The effect of out board ailerons slightly up is the same as washout. I'm only talking 2-4 degrees. Giving the same effect as "twisting" the wing. We actually did this with the JHH hawk jet arf, it was discussed a lot in the jet forum, to provide washout and stop its nasty tip stall habbit. Do a search in the Jet forum, and you will see that I didn't just dig this out of my *****.

Speaking of washout, add a lot of spoiler to a 3D plane and it will fly a lot more slowly in the "harrier" manuever than it ever would without them and guess what, no tip stall.

RE: DH-Comet
 

Here's my DH-88 It was alot of work but, here it is, we'll C how well it flys

RE: DH-Comet
 

Plese tell us what you think of the kit. Is it strong, well built kit?

Dave

RE: DH-Comet
 

So it was harder than the average arf to put together? Did you go with retracts? And is there a bottom part to the cowls?

RE: DH-Comet
 

Here's a link to some pics of mine, just out of the box.

[link=http://www.rcuniverse.com/forum/m_3861170/anchors_3861170/mpage_1/key_/anchor/tm.htm#3861170]Another Post[/link]

RE: DH-Comet
 

RTF after break in ?, However 2 YS 63's in tow, the engine cowls were left off it for adjustments '

RE: DH-Comet
 

Maiden flight this`week, had to get another on board glow it just came in the mail Friday. Reaching around and under 2 YS 63's running never seemed to be a good idea... I did fiberglass the formers in the tail section and gave the tail extra attention with epoxy. Turned out solid........ During a engine break in run. The elevator rod mount snapped at the U Rod It was poorly soldered. This would have caused an instant heap O' crap. I modified the tail to an outer push rod set-up.....

But as with all ARF's I treat'em like I am repairing them rather building them then I have just me to blame for it's future or lack there of.

RE: DH-Comet
 

Glad to here its coming along well. Please keep us posted. Would love to here a flight report.

RE: DH-Comet
 

Hi M:
I would like to set mine up like yours with the electric,,, could you please let me know what you used and motors, I would really appreciate it.

Dave

RE: DH-Comet
 

WhoDaMan
Sent a PM to you. The your questions are going to me in PM and to the thread?

RE: DH-Comet
 

I just got this DH88 for my anniversary!!!!!!!!! I'm typing from my laptop here in Carmel. I'm so excited!!!! I'm curious about the retracts and what is out there for "options"?
It "has" to have retracts....wheels up and flying low....I can't wait!

My wife bought my a set of Tower hobbies .46 for this bird. I see that 4 four strokes were used...I'm sure this is because of the ugly mufflers for the 2 strokes may take away from the sexyness of this bird. I may go Pitts Muffs with this..any suggestions? Motors have to be mounted upside down. I think Slimline muffs make an inverted pitts for .46.

LOVE THE FLAPS also. I think this is a real nice looker. I may check into buying 4 strokes though.

I can't wait for others to fly it for their opinion.

Kevin

RE: DH-Comet
 

I had to take the plunge and ordered the retracts and struts. Got them yesterday. Heavy duty, looks good. Can't help you on the gas motors. I'm going electric. Good luck. I will start mine in a month.

RE: DH-Comet
 

How do the struts look. Can you load a picture for us.

Thanks,,Dave

RE: DH-Comet
 

Yea, I'm curious about the struts also...pics pics pics. Do the wheels that come with the arf fit right in????? How about mounting the retracts front cover to the landing gear..you know the red strut covers..do they go on the working retracts???

Kev

RE: DH-Comet
 

Trying to upload but it isn't working. I'll keep trying.

RE: DH-Comet
 

Here are the images:

RE: DH-Comet
 

Sorry they loaded twice. As far as a front lower cover on the struts, I'm not sure if it comes with them in the ARF, but I'm sure they can be easily made and attacked if not. The struts have biult in springs. They seem nice. The real test is in the field.

RE: DH-Comet
 

Excellent,,,,, Thank you

Dave