logo
Thread Tools
Old 10-04-2019, 05:29 PM
mtreyr is offline
Find More Posts by mtreyr
Registered User
United States, NC, Pisgah Forest
Joined Jul 2016
4 Posts
Question
Engine/Airframe

Hey All!

I've got a question. I have the 89" H9 Carden Extra. It is unbuilt, and I'm getting ready to start building it. I have a DLE 61 that came with it when I bought it from a guy at my club. I'm always looking for more power, and I've looked at 70cc twins, and with the straight plugs out the top of the cylinder it is too wide to fit without cutting the cowl. Measuring a DLE 120 it would fit perfectly without having to cut the cowl for the plugs. I'm also concerned with the 61 it will be tail heavy. Two full size servos directly in the tail for the stabs.

Now for the question...

Is that too much engine? I like overpowered, but there is a limit.
mtreyr is offline Find More Posts by mtreyr
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 10-04-2019, 06:05 PM
Airiley is offline
Find More Posts by Airiley
Registered User
United States, VA, Lynchburg
Joined Jul 2016
109 Posts
I would have to say a 120 is too much.
Airiley is offline Find More Posts by Airiley
Reply With Quote Quick reply to this message
Old 10-04-2019, 09:02 PM
Cory S is offline
Find More Posts by Cory S
Registered User
United States, NH, Bradford
Joined Jun 2018
21 Posts
Quote:
Originally Posted by Airiley View Post
I would have to say a 120 is too much.
Agreed.
Way too much......


Could always sell the 61, and toss a DLE-85 on it?
Cory S is offline Find More Posts by Cory S
Reply With Quote Quick reply to this message
Old 10-04-2019, 09:06 PM
dusturbd is offline
Find More Posts by dusturbd
Registered User
United States, FL, Lakeland
Joined Jan 2015
779 Posts
Look at the eme 70 twin it has angled plugs which is narrower than the other 70’s and they run great
dusturbd is offline Find More Posts by dusturbd
Reply With Quote Quick reply to this message
Old 10-04-2019, 09:30 PM
mtreyr is offline
Find More Posts by mtreyr
Registered User
United States, NC, Pisgah Forest
Joined Jul 2016
4 Posts
Thanks for the info!
mtreyr is offline Find More Posts by mtreyr
Reply With Quote Quick reply to this message
Old 10-05-2019, 04:22 PM
ponyboy082662 is offline
Find More Posts by ponyboy082662
wrongwayfeldman
ponyboy082662's Avatar
United States, AL, Florence
Joined Mar 2010
2,574 Posts
With a 120...you would have the prop touching the ground. I've never heard of that plane building tail heavy. A flying buddy had an eme 60 in his with plenty of power and not tail heavy
ponyboy082662 is offline Find More Posts by ponyboy082662
Reply With Quote Quick reply to this message
Old 10-05-2019, 04:57 PM
Raven1978 is offline
Find More Posts by Raven1978
Fly low, wheels up !
Canada, ON, Kingston
Joined Sep 2015
102 Posts
Gp61 on a pipe. Lots of power there
Raven1978 is offline Find More Posts by Raven1978
Reply With Quote Quick reply to this message
Old 10-05-2019, 07:17 PM
stingray528i is offline
Find More Posts by stingray528i
Registered User
United States, NC, Wilmington
Joined Nov 2010
812 Posts
a 120 would be way to much and you won't get enough added power with a 70 to justify it I would stick with the 61 it is more then enough for that air frame
stingray528i is offline Find More Posts by stingray528i
Last edited by stingray528i; 10-05-2019 at 07:43 PM.
Reply With Quote Quick reply to this message
Old 10-06-2019, 08:55 AM
mtreyr is offline
Find More Posts by mtreyr
Registered User
United States, NC, Pisgah Forest
Joined Jul 2016
4 Posts
Thanks guys that is all good information!
mtreyr is offline Find More Posts by mtreyr
Reply With Quote Quick reply to this message
Old 10-06-2019, 03:40 PM
airboss/oc is offline
Find More Posts by airboss/oc
desert racer
airboss/oc's Avatar
United States, CA, Orange County
Joined Aug 2007
6,318 Posts
Quote:
Originally Posted by ponyboy082662 View Post
With a 120...you would have the prop touching the ground. I've never heard of that plane building tail heavy. A flying buddy had an eme 60 in his with plenty of power and not tail heavy
use a 3 blade 25-14 and it will clear. I say build it !
airboss/oc is offline Find More Posts by airboss/oc
Reply With Quote Quick reply to this message
Old 10-06-2019, 04:13 PM
ponyboy082662 is offline
Find More Posts by ponyboy082662
wrongwayfeldman
ponyboy082662's Avatar
United States, AL, Florence
Joined Mar 2010
2,574 Posts
Quote:
Originally Posted by airboss/oc View Post
use a 3 blade 25-14 and it will clear. I say build it !
Ha....yeah I wonder how long a 150 mph 3D plane would stay together....lol
ponyboy082662 is offline Find More Posts by ponyboy082662
Reply With Quote Quick reply to this message
Old 10-06-2019, 08:53 PM
airboss/oc is offline
Find More Posts by airboss/oc
desert racer
airboss/oc's Avatar
United States, CA, Orange County
Joined Aug 2007
6,318 Posts
ive pushed them pretty hard with 3 blades and never had an issue other than a little fluter
airboss/oc is offline Find More Posts by airboss/oc
Reply With Quote Quick reply to this message
Old 10-07-2019, 02:17 PM
deason is offline
Find More Posts by deason
Old dog, New tricks
United States, TN, Munford
Joined Jul 2011
291 Posts
A 61 will pull it just fine. I've got 2, one on a EF Edge and the other on a Pilot Extra. Wingspans at 89 and at 93. They will do anything you want them to do and punchout is instantaneous. Go with anything bigger and you will probably destroy the airframe and waste money. Not to mention on BOTH air frames i did not have to add a single ounce of weight. just move equipment. A bigger engine will give you more weight and increase wing loading. An 85 or 120 would be too much to try to balance. The biggest I would go on that airframe would be a 70.
deason is offline Find More Posts by deason
Reply With Quote Quick reply to this message
Old 10-07-2019, 06:26 PM
airboss/oc is offline
Find More Posts by airboss/oc
desert racer
airboss/oc's Avatar
United States, CA, Orange County
Joined Aug 2007
6,318 Posts
I don't know about destruction and airframes . ive built every plane , heli and edf with way more power than it needed and loved it especially when it blasts past all the norms staying safe in their safety boxes . that's what makes RC fun is trying something different
airboss/oc is offline Find More Posts by airboss/oc
Reply With Quote Quick reply to this message
Old 10-07-2019, 06:53 PM
closetguy is offline
Find More Posts by closetguy
Registered User
United States, OH, Berlin Heights
Joined Jul 2006
4,978 Posts
You build it the way you want,if you don't you will always be asking your self.It will fly,maybe with added weight to the rear,it will need to land fast,but it will be extremely fast flying!HeHe,do it,and get some video!
closetguy is offline Find More Posts by closetguy
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools