RE: 157" Discus Glider  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> RC Airplanes >> RC Gliders, Sailplanes and Slope Soaring >> RE: 157" Discus Glider Page: <<   < prev  1 [2] 3 4 5 6 7 8 9 10   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: 157" Discus Glider - 1/29/2006 4:49:36 PM   
SlopeFlyer33


 

Posts: 7
Joined: 12/30/2004
From: Tiburon, CA, USA
Status: offline
quote:

ORIGINAL: mludwin

I wonder if every kit has the same problem with the horz hinge being mounted too low. It did take long to make to make the spacer, in fact I still have some of the plywood I ripped left. Stop on by and I give it to ya

I'm about to start mounting the servos in the wings. How is the hardware on your kits? The hardwood blocks supplied with mine look like they were cut out with realy dull teeth. I am planning to make new out of stock I have laying around.

Ideas for wiring the wings? I'm thinking of using bulk cable and soldering to the servos so I could hide the leads inside the wing wiring channel.


My kit had the stab hinge too low also - I fixed it the hard way by grinding down parts of the fuse, but the spacer solution would have been much easier.

In the wing I soldered servo cable on the servos and soldered to a 4 pin deans male connector hanging out the end of the wing.
In the fuse I epoxied a 4 pin deans female - there was plenty of thickness in the side of the fuse to hold it.

Bruce

(in reply to mludwin)
       Post #: 26

RE: 157" Discus Glider - 1/29/2006 5:50:46 PM   
Bill Gottorf


 

Posts: 5
Joined: 9/29/2002
From: Stuart, FL, USA
Status: offline 		I got mine this week and was impressed with the quality. Agreed with everything you guys have posted so far.
Will mount the release about 6" back from the nose unless I hear differently. Feel that it needs a wheel, but do not know about a retract. I'm new to scale gliders. Have a Orlice 137" still in the box and will start it soon also. Is there anyone below Orlando and east of Ft Meyers interested in sharing ideas and flying sites. I have a 1,000 acre sod farm with no way to take off except high grass and a farm lane.
Bill G Stuart, Fl

(in reply to SlopeFlyer33)
       Post #: 27

RE: 157" Discus Glider - 1/29/2006 6:38:19 PM   
emerckx


 

Posts: 16
Joined: 1/20/2006
From: riverview, MI, USA
Status: offline 		What instructions did you get? The two pages from mludwin/ Marty are helpful and I didn't get them a few weeks ago. And the color version PDF of the "plans" are better then the B&W paper one they sent me. I can send that or the seller sent it to me.
Edward

(in reply to Bill Gottorf)
       Post #: 28

RE: 157" Discus Glider - 1/29/2006 8:42:59 PM   
mludwin


 

Posts: 81
Joined: 1/7/2003
From: Redding, CT, USA
Status: offline 		Here's a few pics of the servo mounts I just made. I plan on making the cover/keeper out of ply, then use the kit's exterior covers. I used a JR 331 micro servo on the speed brake and it's working fine.

Any comments before I glue them in place???

I want to do a wheel also, but not a retract. I'm up for ideas

I like the idea of a deans connector in the fuse, any pics?

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to emerckx)
       Post #: 29

RE: 157" Discus Glider - 1/29/2006 10:44:53 PM   
soarrich



Posts: 2375
Joined: 2/1/2002
From: Middletown, NJ, USA
Status: offline 		This is from my 103 incher, but is how I'm going to do the 4M.

The first show the rs-232 jack I used in the fuse. I use the jack as a locating pin also. The dimples clear the screwheads from the wing's jack.

The second pictue shows the male plug.

The servos I used are HS-125s, short straight pushrod run.

My homemade control horn, made from a 1/8 inch brass tube flattened on the end, then drilled with a .055 drill bit, it leans forward a bit to put the hole right at the hinge line.

I'll get rid of the clevus on the 4M, and do it like in the last picture.

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


< Message edited by soarrich -- 1/29/2006 10:49:07 PM >

_____________________________

Rich Border

(in reply to mludwin)
       Post #: 30

RE: 157" Discus Glider - 1/29/2006 10:51:34 PM   
mludwin


 

Posts: 81
Joined: 1/7/2003
From: Redding, CT, USA
Status: offline
quote:

ORIGINAL: DrDiscus

Very Difficult to balance on the center of lift.


I've got the kit together so I can figure out radio/servo placement & rough-in the CG. I had to add 2lbs, 3oz to the nose for a rough CG. Does this seem right?

(in reply to DrDiscus)
       Post #: 31

RE: 157" Discus Glider - 1/29/2006 11:01:37 PM   
soarrich



Posts: 2375
Joined: 2/1/2002
From: Middletown, NJ, USA
Status: offline
quote:

ORIGINAL: mludwin

I've got the kit together so I can figure out radio/servo placement & rough-in the CG. I had to add 2lbs, 3oz to the nose for a rough CG. Does this seem right?


I wouldn't worry about 2 pounds, my 4.2M ASK-21 was 13 pounds and floated, though with a thicker airfoil.

_____________________________

Rich Border

(in reply to mludwin)
       Post #: 32

RE: 157" Discus Glider - 1/29/2006 11:11:57 PM   
mludwin


 

Posts: 81
Joined: 1/7/2003
From: Redding, CT, USA
Status: offline 		My first 4m, no idea of how heavy it will be. Nice idea for the connector, easy parts for me, dozens in the tool box at work.

I'm trying a push rod for the horz. Right now I have 48" gold n' rod set in place. The short one is the horz. It does work smooth, but will need to be extended out to the servo.

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to soarrich)
       Post #: 33

RE: 157" Discus Glider - 1/30/2006 1:27:30 AM   
mludwin


 

Posts: 81
Joined: 1/7/2003
From: Redding, CT, USA
Status: offline 		here's a few shots of a rough receiver/servo layout. i'm thinking of placing the tow release so it's easily viewable through the square in the tray. that should place it about 6-7 inches back from the nose

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to mludwin)
       Post #: 34

RE: 157" Discus Glider - 1/30/2006 2:11:35 AM   
soarrich



Posts: 2375
Joined: 2/1/2002
From: Middletown, NJ, USA
Status: offline 		You need bigger batteries for those two hour, ten kilometer flights.

On my 103 incher I ripped out all the wooden parts and layed in a layer of CF, I haven't decided yet on this one.

_____________________________

Rich Border

(in reply to mludwin)
       Post #: 35

RE: 157" Discus Glider - 1/30/2006 5:27:38 AM   
kwmtrubrit


 

Posts: 174
Joined: 5/12/2004
From: Little Rock (via London Eng.), AR, USA
Status: offline 		I was initially interested in the 4m ship, but as I followed this and other postings I came to the conclusion that that was too much plane for me. Just before Christmas, I called Raidentech to get some info on the Ventus. It has been a few weeks, but if I remember correctly the Ventus ad on the Raidentech site shows what seems to be TWO wing spans available (to me anyway). Back to the phonecall. I called and asked the guy about the two wingspans, one was 2.5m and the other 3m. His response was " I can tell you that 2.5m is big." I asked if there was someone there that knew some info about the planes, his response, "yes, but they are all busy. It is Christmas you know." CLICK (the phone was hung up). Not to be turned off, I e-mailed Raidentech explaining my question and that I would like more info about the plane. I got a fast response from Raidentech. Unfortunately it was the same ad as on their site, but with one difference. IT WAS ALL IN FRICKIN" CHINESE! Not being one that lets go easily, I called again. I got the same guy and he remembered me calling before. I told him that I found the ad confusing and wanted to know.....blah, blah, blah. His response, "Yes, our Chinese ads are very confusing to English speaking people. The Ventus is on back order now. Call again and If we have them in stock I will open the box and tell you what the plane looks like and what it has (flaps or spoilers, 2.5m or 3m wing, etc, etc, etc.) If you want it wI will send it to you." This time I rolled over and played dead!!

_____________________________

Be an organ and tissue donor. Tell your family your wishes. It's your last chance to make a difference.

(in reply to mludwin)
       Post #: 36

RE: 157" Discus Glider - 1/30/2006 5:54:26 AM   
soarrich



Posts: 2375
Joined: 2/1/2002
From: Middletown, NJ, USA
Status: offline 		In their picture the one is the 2.3M, the other the 4M. I have both, in real measurements it's 103 inch for the e power sailplane, and 157 inch for the pure sailplane.

Yes the Chinese don't answer emails, can't tell you if it has flaps or spoilers, but they probably could in Chinese, would you understand it then? The 4M would be a $400~500 plane if the instructions were in German. The closest German plane may be an Alpina, I have one of them too, it's now about $800. The plane is very prefabed, so do you really need instructions? My box has no instructions, but I don't see a problem building it. From my quick look in the box, 95% of the work is installing the radio, any points that are of concern should be covered here in the next week or so.

I can't say whether it would be too much plane for you, but from flying a few big planes in the past I think it will turn out to be a smooth flier, the only thing you have to learn is that the big ones really cover ground so landing them you need a little more room than you're used to needing.

Rich

_____________________________

Rich Border

(in reply to kwmtrubrit)
       Post #: 37

RE: 157" Discus Glider - 1/30/2006 9:02:39 AM   
emerckx


 

Posts: 16
Joined: 1/20/2006
From: riverview, MI, USA
Status: offline 		I'm not real strong in sailplanes and I understand slope soarer's need the weight to cut though the wind. But if lighter isn't better, why put light servos in this ship?? What final weight should we be aiming for here? I guess I can see that it could be too light and just blow over, but at some point.... what is too heavy? If we are going to add wgt up to ~13 pounds I'll need to leave some space at the CG for it.

Re Push rods: Did you try to hold the outer case of the gold n' rod in place any where? Or just run it?

Thanks everyone for the pictures.

Re: Raidentech, I think most of us bought it off of eBay, seller yuejin2002, seems to be fair at English, but ships fast. Don't pay more than ~ $160-170, wait, he seems to have more to list.

I don't think ARF is quite true, it is close, but if you are not a builder, the plan is very limited. It is a nice body and wings, for the money.

What tow release are people thinking of using?

What is the correct name for the wheel we want??? I've been looking on the net but haven't seen anything close to a real sailplane wheel in it own little cowling. Maybe as a replacement part for a more high end sailplane?
Edward