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

Latest topics
» Looking for a New In Box PT-19 from the 80s-90s
by kaylejwm Today at 2:04 pm

» GSCB meet this Sunday
by Ken Cook Today at 1:21 pm

» Wen-Mac slotted glowhead
by roddie Today at 12:44 pm

» Recent engine acquisitions
by 1/2A Nut Today at 12:39 pm

» Happy Thanksgiving Friends
by Admin Today at 12:14 pm

» 1/2A Non-Contest Control Line Gathering
by roddie Today at 11:23 am

» The Breezy Hill Flyers "Black Fly-Day" Event !!!
by fit90 Today at 8:53 am

» Submarine ARA San Juan Lost in the sea ....
by akjgardner Today at 8:41 am

» Drill Press Question
by getback Today at 8:10 am

» *** Double SIGH ***
by Kim Today at 5:15 am

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

Texaco questions

View previous topic View next topic Go down

Texaco questions

Post  rainyday101 on Sun May 21, 2017 7:07 pm

Well it has been 25+ years since I started or ran an .049 or any RC engine for that matter. Today I started my new Texaco. The sweet smell of 1/2A exhaust! Forgot how good it smells. I bought a fuel bulb, some spring starters, a Texaco, a few other items and a battery pack with clip from Cox.ca. The Texaco I started today was bought off the big auction site and is an Estes era Texaco.

At first I had problems getting it started and any rpm, then I saw a bubble around the glow head. Checked and head was loose. Tighten up the head, primed and it fired right up. I am using Sig Champion 25 with 10% synthetic and 10% castor oil. Prop is a Master Airscrew 7x3. RPM was 10,080. The needle valve does not seem very sensitive, as it is hard to find a real peak, so I ran it pretty rich. I had the engine starting backwards about 60% of the time.

I put the spring starter on and the plastic piece over the drive plate and used that to start the engine. No more starting in reverse! The needle valve still doesn't appear to be sensitive at all. 1/2 turn either way and no noticeable change. I have 10 tanks through it now. It still hesitates for a brief bit here and there. When I tip the engine up at 45 degrees it stays constant. I am still getting a little over 10,000 rpm with the Master Airscrew 7x3. According to the specs. that is good. Instructions say 9100 to 9600 with a 7x3.5. I also have some original Cox competition 8x3 props that I can try.

I hope this has enough oomph for a 16 ounce Ace Whizard.

Any suggestions on anything I am doing wrong or should try?
avatar
rainyday101
Bronze Member
Bronze Member

Posts : 33
Join date : 2017-04-30
Location : Peshtigo, Wisconsin

View user profile

Back to top Go down

Re: Texaco questions

Post  RknRusty on Sun May 21, 2017 9:51 pm

I think, just see how it flies before you change anything. If it seems underpowered, try prop changes first. There are other effective mods that will make a real difference, but you can't undo some of them. You have the right fuel, but 35% nitromethane is always an excellent option if you feel you need a boost, especially in hot weather when power is down a bit.
After the 14 rich runs, go ahead and peak it out and let it scream for a while. It should hold peak RPM just fine by now
Keep us posted,
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
avatar
RknRusty
Moderator

Posts : 10436
Join date : 2011-08-10
Age : 61
Location : South Carolina, USA

View user profile

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