Log in
Search
Latest topics
» Foam hand kids glider converted to 0.049 CLby roddie Today at 4:33 am
» Cox PT-19 Wing
by latole Today at 4:28 am
» Roddie-Rigger.. a 2005 original design
by roddie Today at 2:54 am
» Golden Bee basic running problem
by roddie Yesterday at 10:51 pm
» Simple Gliders
by rdw777 Yesterday at 6:25 pm
» Weird search for a single comic from an old Mad Magazine
by Kim Yesterday at 1:44 pm
» Scientific "Zipper" Build...Zipper Flys!.
by getback Yesterday at 7:27 am
» Cox .049 Tee Dee engines back in stock (limited availablility)
by GallopingGhostler Yesterday at 1:05 am
» Very off-topic.........Time passes and not always for the best......
by rsv1cox Thu Jul 25, 2024 2:47 pm
» Jim Walker Bonanza etc.
by rsv1cox Wed Jul 24, 2024 6:30 pm
» Throttles for Cox Tee Dee .049 / .020 / .010 engines --- videos
by sosam117 Wed Jul 24, 2024 8:54 am
» Introducing our Cox .049 TD Engines
by Admin Tue Jul 23, 2024 2:00 am
Cox Engine of The Month
July-2024
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Silver QRC
Page 1 of 1
Silver QRC
![Silver QRC 035a8110](https://i.servimg.com/u/f39/20/31/87/29/035a8110.jpg)
![Silver QRC C9768910](https://i.servimg.com/u/f39/20/31/87/29/c9768910.jpg)
![Silver QRC 090acd10](https://i.servimg.com/u/f39/20/31/87/29/090acd10.jpg)
I decided to overhaul a QRC I won ebay a few years ago….After rebuild I ran three tanks thru it rich….. It seemed happy at the rich setting at about 11K…. Fourth run leaned out to 13.5 K, About like the info online indicates…. Using a Cox 6-3 and Glow Plug Boy 24…. This was with a standard glow plug, The one that came on it, Also using three head gaskets as indicated by the instructions for break in I found online….Runs about three minutes…. Wished it would go a bit longer…. Maybe with a little more run time?
Not the strongest of Cox .049s but unique with its muffler which does a pretty good job….Just a little more trouble to prime….Nice to get oily hands agin, Never thought I would have missed that
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
rdw777- Diamond Member
Posts : 1470
Join date : 2021-03-11
Location : West Texas
Re: Silver QRC
![Silver QRC 7ff07710](https://i.servimg.com/u/f39/20/31/87/29/7ff07710.jpg)
![Silver QRC 195ba010](https://i.servimg.com/u/f39/20/31/87/29/195ba010.jpg)
When I was looking for information on it online it was mostly to do with QRC’s with red tank and blue spinner but I ran into a post by rsv Bob, Looks like the plain ones were for rtf Cox airplanes, Belated thanks Bob!! Also an advertisement that hints at dating….
Also I want to thank Ken Cook for a past post that I saved on sealing tanks for Bee type engines, Those help tremendously to provide steady runs ….
Robert
rdw777- Diamond Member
Posts : 1470
Join date : 2021-03-11
Location : West Texas
Re: Silver QRC
Robert,
What is the number on the cylinder? QRC should be #6 or not numbered , 2 bypass and no SPI. Also should have a 1702 head on it.
If it’s just a regular bee with a muffler on it then those tach readings sound correct. If it is a number 6 cylinder then put the TD head on it. I would also recommend a 5x3, but depends on your plans for it. What fuel? 1 gasket for every 10% nitro. So if 25 percent 3 gaskets 20% 2 gaskets etc. it’s a wag really, but you can add or subtract gaskets until you see the best performance.
Ron
What is the number on the cylinder? QRC should be #6 or not numbered , 2 bypass and no SPI. Also should have a 1702 head on it.
If it’s just a regular bee with a muffler on it then those tach readings sound correct. If it is a number 6 cylinder then put the TD head on it. I would also recommend a 5x3, but depends on your plans for it. What fuel? 1 gasket for every 10% nitro. So if 25 percent 3 gaskets 20% 2 gaskets etc. it’s a wag really, but you can add or subtract gaskets until you see the best performance.
Ron
Cribbs74- Moderator
Posts : 11904
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Silver QRC
![Silver QRC A99e0a10](https://i.servimg.com/u/f39/20/31/87/29/a99e0a10.jpg)
It has a mark on it but I can’t tell much from it…. Yes, dual bypass and no SPI…. Also no taper or very little in the cylinder…. Also no 1702 head, Just standard….
If I do anything with it maybe a simple 2 channel RC…. I’m shopping on outerzone to see what might be interesting….. The muffler is appealing because there’s a chance I could fly about one mile from home…. Closest RC field is about 1-1/2 hrs away
rdw777- Diamond Member
Posts : 1470
Join date : 2021-03-11
Location : West Texas
Re: Silver QRC
With standard head and 24% run one head gasket, should pick up some rpm. Not sure about run time. These engines require very little
break-in.
break-in.
crankbndr- Top Poster
- Posts : 3087
Join date : 2011-12-10
Location : Homestead FL
![-](https://2img.net/i/empty.gif)
» Not bad, two for one plus a Silver Bee?
» *Cox Engine of The Month* Submit your pictures! -May 2017-
» "Silver" RR-1 - Pie in the sky?
» Sig Skyray/ Cox Silver Bee 049
» Silver widow
» *Cox Engine of The Month* Submit your pictures! -May 2017-
» "Silver" RR-1 - Pie in the sky?
» Sig Skyray/ Cox Silver Bee 049
» Silver widow
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum