Log in
Search
Latest topics
» Introducing the new - "QZ" RR-1by Boats13 Today at 10:19 am
» STUKA bomb dimentions needed
by latole Today at 9:36 am
» Indexing COX cylinders
by davidll1984 Today at 7:56 am
» Another of C.T. engines cleaned ---- Cox Tee Dee .09 --- Just today (3/26/2024) more Cox parts
by Yabby Today at 7:47 am
» Introducing our Cox .049 TD Engines
by Yabby Today at 6:33 am
» 1/2a Skyray plans?
by 944_Jim Yesterday at 10:14 pm
» Postage stamp backplates
by JPvelo Yesterday at 8:52 pm
» my attempt at making an exhaust throttle for Cox .049
by roddie Yesterday at 8:20 pm
» Cosmic Winds, - Big Guy, Little Guys, Silver Guy and Wounded Guy.
by rsv1cox Yesterday at 5:18 pm
» My friend Ramón, his Cox .09 & Cox .010
by MauricioB Yesterday at 12:31 pm
» Parts Cox TD-4
by rsv1cox Yesterday at 8:40 am
» On ebay a very special Cox engine
by davidll1984 Yesterday at 6:32 am
**VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Page 1 of 1
Choose the next engine of the month!
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Hello i think we have a wienner
getback- Top Poster
-
Posts : 10028
Join date : 2013-01-18
Age : 66
Location : julian , NC
robot797- Platinum Member
- Posts : 726
Join date : 2013-07-28
Age : 33
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
robot797 wrote:yay my firsth win
Congratulations, that is quite the engine and deserves an award!
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Congrats robot797, well deserved.
You owe us a video about how that engine runs!
You owe us a video about how that engine runs!
balogh- Top Poster
-
Posts : 4738
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary
robot797- Platinum Member
- Posts : 726
Join date : 2013-07-28
Age : 33
Kim- Top Poster
-
Posts : 8509
Join date : 2011-09-06
Location : South East Missouri
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
That's Too Cool.....Congratsrobot797 wrote:
here you go
akjgardner- Diamond Member
-
Posts : 1448
Join date : 2014-12-28
Age : 64
Location : Greensberg Indiana
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Great video Robot. What % oil did you have in the fuel? Apart from the natural cooling of the large heat sink mounted on the engine head, did you use some firced ventilation too? That engine must have run very hot.
balogh- Top Poster
-
Posts : 4738
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
i beleve i used 20 or 25% oil
half syntetic half castor
and it ran only a few degrees above nitro temp
and what amazed me most is that it hardly used fuel
(what did i expect with the needle only 0.5-0.75 turns opened)
half syntetic half castor
and it ran only a few degrees above nitro temp
and what amazed me most is that it hardly used fuel
(what did i expect with the needle only 0.5-0.75 turns opened)
robot797- Platinum Member
- Posts : 726
Join date : 2013-07-28
Age : 33
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Thanks. Yes the calorific value of gasoline (43MJ/kg) is more than twice that of the methanol (19.9MJ/kg) so the fuel-air mixture is much leaner and fuel consumption is much less with gasoline.
balogh- Top Poster
-
Posts : 4738
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary
MauricioB- Top Poster
- Posts : 3517
Join date : 2016-02-16
Age : 52
Location : ARG
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
thank you all for voting on me
also be prepaired to see more of this
I am building a gasoline boat with it
also be prepaired to see more of this
I am building a gasoline boat with it
robot797- Platinum Member
- Posts : 726
Join date : 2013-07-28
Age : 33
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Fun stuff way to go Robot congratulations!
Post a vid of the boat running we would like to see that!
Here is a .05 engine powering my 1/2A outrigger hydro design.
Published on Oct 9, 2016
1st Run - Picco P-Zero Outrigger Hydro Profi Tuned Pipe
.85cc / .050 cu. in. / 1/2A car engine converted for boat use.
Very stable, needle valve set a bit rich for the first few
runs, need to lower the strut a bit, tracks very well.
Will do another vid after I tweak the setup.
Stock X427 / 20% castor 30% Nitro. Per Doppler
reading best pass 62.25 Kph or 38.68 mph pitch speed / 27,290 rpm
Looked like around 35 after trimming it out.
Post a vid of the boat running we would like to see that!
Here is a .05 engine powering my 1/2A outrigger hydro design.
Published on Oct 9, 2016
1st Run - Picco P-Zero Outrigger Hydro Profi Tuned Pipe
.85cc / .050 cu. in. / 1/2A car engine converted for boat use.
Very stable, needle valve set a bit rich for the first few
runs, need to lower the strut a bit, tracks very well.
Will do another vid after I tweak the setup.
Stock X427 / 20% castor 30% Nitro. Per Doppler
reading best pass 62.25 Kph or 38.68 mph pitch speed / 27,290 rpm
Looked like around 35 after trimming it out.
Last edited by 1/2A Nut on Mon Jun 10, 2019 4:40 am; edited 1 time in total
1/2A Nut- Top Poster
- Posts : 3402
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Well done Robot.
As stated earlier a most deserving win.
As stated earlier a most deserving win.
Davenz13- Platinum Member
- Posts : 591
Join date : 2013-11-28
Age : 68
Location : Palmerston North, New Zealand
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Good Job Robot , heck i still havent won one but that's OK having fun is all its about CONGRATULATIONS !!
getback- Top Poster
-
Posts : 10028
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (June 2019)
Congrats Robot797! Very interesting project!
Tee Bee- Platinum Member
- Posts : 763
Join date : 2011-08-25
Location : Angleton, TX
Similar topics
» **Black Lynx Engine Giveaway June 2019** Cox Engine of the Month
» *Cox Engine of The Month* Submit your pictures! -June 2019- #ENGINE GIVEAWAY#
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (May 2019)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** -ENGINE GIVEAWAY- (June 2018)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (November 2019)
» *Cox Engine of The Month* Submit your pictures! -June 2019- #ENGINE GIVEAWAY#
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (May 2019)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** -ENGINE GIVEAWAY- (June 2018)
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (November 2019)
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum