Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Cox Engine of The Month
November-2017
MauricioB's

"Cox Tee Dee .010"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Gallery


Win This Engine!
The Traveling Prop
World of Aviation

Big Otto gets some air time

View previous topic View next topic Go down

Big Otto gets some air time

Post  Ken Cook on Sun Apr 19, 2015 9:56 am

I was able to get to the field and get some flying in yesterday. I brought Big Otto with me and got two flights on it. I made a big mistake in assuming a few things. I banked on the assumption that due to using a TD and having it project slightly out further than a bee was going to make this plane nose heavy. I did make some minor changes in construction and I feel this proved to be the deal breaker for my thinking. The plane came out nose heavy. I guess this is the price you pay when you don't fully assemble and mock things up and take a guess. All this aside the plane flew real well and I have some easy solutions to providing tail weight without having chunks of lead stuck to the model. I despise that. I will be making new elevator from basswood and just a tad bit wider. This plane however will be very maneuverable once I resolve these issues. It's always nice to have a new model to fly. Here it is with my combat TD running on 10% Powermaster . The speeds appear slow but from pilot to center of plane is 45'. https://www.facebook.com/PhillyFliersCL/videos/vb.513140418756097/845562595513876/?type=2&theater I have to give a big thanks to Mike Parkin for providing the aluminum carb body not to mention making the APC prop adapters that I designed. These work terrific on the APC props. Ken
avatar
Ken Cook
Diamond Member
Diamond Member

Posts : 2845
Join date : 2012-03-27
Location : pennsylvania

View user profile

Back to top Go down

Re: Big Otto gets some air time

Post  JPvelo on Sun Apr 19, 2015 10:28 am

Ken,
That tee Dee seems to really like the 10% powermaster. I recall reading where you have run powermaster in cox engines before. Do you get any negative effects as far as premature wear? I think this may be the solution for the fuel proofing issues we've discussed .

Jim
avatar
JPvelo
Diamond Member
Diamond Member

Posts : 1925
Join date : 2011-12-02
Age : 50
Location : Phoenix

View user profile

Back to top Go down

Re: Big Otto gets some air time

Post  Ken Cook on Sun Apr 19, 2015 11:16 am

Jim, despite the rumors that run rampant throughout the net, I've been using Poiwermaster GMA blend 5% or 10% nitro - 11/22 oil in every single engine I own including vintage engines. I never ever had a failure or premature wear or all the bs that everyone will tell you if you run synthetic fuels. I run it in Mccoy's, vintage O&R's you name it. It's all I use bar none. In the past 15 years I've been running it, and I run a lot of stuff I never heard or seen a failure that was due to using this fuel. I like many was very skeptical at first. My Fox .35's run it for racing as well. I very rarely use all castor fuels. I use it only for a select few. Ken
avatar
Ken Cook
Diamond Member
Diamond Member

Posts : 2845
Join date : 2012-03-27
Location : pennsylvania

View user profile

Back to top Go down

Re: Big Otto gets some air time

Post  JPvelo on Wed May 06, 2015 7:00 pm

Had the chance to fly today for the first time in about a month. I ran a tee Dee on powermaster 10/20. Started easy and ran great. I'll keep trying it out.

Jim
avatar
JPvelo
Diamond Member
Diamond Member

Posts : 1925
Join date : 2011-12-02
Age : 50
Location : Phoenix

View user profile

Back to top Go down

Re: Big Otto gets some air time

Post  getback on Thu May 07, 2015 7:09 am

They sell racing fuel down at the store below my house for some of the drag strip tuners around here , Its this stuff http://powermasterfuels.com/index.php?option=com_content&view=article&id=6&Itemid=8 they don't have the airplane fuel but bet they can get it Huh... If can get in touch with the rep. maybe cut out the middle man Laughing
avatar
getback
Top Poster
Top Poster

Posts : 4315
Join date : 2013-01-18
Age : 60
Location : julian, n.c.

View user profile

Back to top Go down

Re: Big Otto gets some air time

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum