Log in
Search
Latest topics
» Cox powered boat litle shrimp hidroplaneby davidll1984 Today at 2:52 pm
» my attempt at making an exhaust throttle for Cox .049
by roddie Today at 1:39 pm
» Introducing the new - "QZ" RR-1
by roddie Today at 1:08 pm
» 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
» 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
New or Nearly New Cox 020 Cylinder & Piston
Page 1 of 1
New or Nearly New Cox 020 Cylinder & Piston
I am looking for a new or newish Cox 020 cylinder and piston to replace the worn pair that presently power my little .020 Tee Dee. I believe all 020 engines use the same piston and cylinder meaning I could also use a pair from a Pee Wee. Please let me know what you have and what you'd like for it. Will need to post to the UK.
Thanks,
Simon
Thanks,
Simon
Last edited by ThermalSniffer on Tue May 19, 2015 4:52 am; edited 1 time in total (Reason for editing : Put a name to the message!)
halfpilot- Formerly known as:
ThermalSniffer - Posts : 96
Join date : 2011-09-06
Location : England
Re: New or Nearly New Cox 020 Cylinder & Piston
I source good deals on ebay for Pee Wee engines just for the piston / cylinders - The TD uses the same set.
1/2A Nut- Top Poster
- Posts : 3402
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: New or Nearly New Cox 020 Cylinder & Piston
Yes, that is what I decided to do in the meanwhile. I took a Pee Wee cylinder and piston from one of my better Pee Wees and got a piston rod reset tool to fix the slack in the old Tee Dee piston and rod.
I had hoped that the piston rod reset might also broaden the cylinder slightly to improve compression. No luck there though, I over cooked it and made the rod ever so slightly stiff in the socket in certain orientations. I am hoping this will loosen up with running but compression on that piston and cylinder set is still lacking. When I push the cylinder to TDC I can see the air bubbling out of the exhaust ports and there isn't much of a pop from the cylinder as I flip the prop over.
I decided to keep the newer set on my Tee Dee and the set with low compression on the Pee Wee. It's meant to be a lower performance engine anyway. I use the CNC aluminium carb on my Tee Dee which means no starter spring. That coupled with the low compression made that engine difficult to start. The Pee Wee with it's starter spring will probably fire up OK even with the low compression.
I had hoped that the piston rod reset might also broaden the cylinder slightly to improve compression. No luck there though, I over cooked it and made the rod ever so slightly stiff in the socket in certain orientations. I am hoping this will loosen up with running but compression on that piston and cylinder set is still lacking. When I push the cylinder to TDC I can see the air bubbling out of the exhaust ports and there isn't much of a pop from the cylinder as I flip the prop over.
I decided to keep the newer set on my Tee Dee and the set with low compression on the Pee Wee. It's meant to be a lower performance engine anyway. I use the CNC aluminium carb on my Tee Dee which means no starter spring. That coupled with the low compression made that engine difficult to start. The Pee Wee with it's starter spring will probably fire up OK even with the low compression.
halfpilot- Formerly known as:
ThermalSniffer - Posts : 96
Join date : 2011-09-06
Location : England
Re: New or Nearly New Cox 020 Cylinder & Piston
I use the aluminum carb bodies too with a thrust washer I am able to start them right up with a 1/2A Sullivan Hornet elect. starter - dont need to prime much a drop or two into the carb after that the fuel will pull right into the engine.
Can recommend 4 x 2.5 cox props or APC 4.2 x 2 for faster flying and of course the 4.5D x 2 for thrust.
Here is a vid of one of my TD .020's with the Cox 4 x 2.5 - Lil Speedy scratch design.
Props are no longer rare thanks to Bernie he ran a batch to sell at Cox International.
Can recommend 4 x 2.5 cox props or APC 4.2 x 2 for faster flying and of course the 4.5D x 2 for thrust.
Here is a vid of one of my TD .020's with the Cox 4 x 2.5 - Lil Speedy scratch design.
Props are no longer rare thanks to Bernie he ran a batch to sell at Cox International.
1/2A Nut- Top Poster
- Posts : 3402
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: New or Nearly New Cox 020 Cylinder & Piston
That thing is stupid fast, looks sharp too!
Cribbs74- Moderator
-
Posts : 11892
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: New or Nearly New Cox 020 Cylinder & Piston
Thank you the 4 x 2.5 really is a perfect fit for the Lil Speedy the APC 4.2 x 2 allows more unloading for more thrust and stead fast turns but just wont go as fast on the straights
1/2A Nut- Top Poster
- Posts : 3402
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: New or Nearly New Cox 020 Cylinder & Piston
I have to say, I am really intrigued with that model. I am a CL guy, but there is something about that little thing that really speaks to me.
Is there a kit or a plan available for it? I have some TD .020's that need some attention.
Ron
Is there a kit or a plan available for it? I have some TD .020's that need some attention.
Ron
Cribbs74- Moderator
-
Posts : 11892
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: New or Nearly New Cox 020 Cylinder & Piston
Send a few to me - I'll give 'em all the attention they can handleCribbs74 wrote: ... I have some TD .020's that need some attention.
Ron
dinsdale- Account Deactivated by Owner
- Posts : 317
Join date : 2012-02-22
Re: New or Nearly New Cox 020 Cylinder & Piston
Cribbs74 wrote:I have to say, I am really intrigued with that model. I am a CL guy, but there is something about that little thing that really speaks to me.
Is there a kit or a plan available for it? I have some TD .020's that need some attention.
Ron
Ron, there is a real nice build thread over at RCU by a guy named pond skipper in the 1/2a forum. ( I think he is Clark Kent if 1/2A nuts Superman)
ForumRC Airplanes"1/2 A" & "1/8 A" airplanes Ply Rolled Fuselage Part Deux - 1/2A " Mini Skorch "
Link:
http://www.rcuniverse.com/forum/1-2-1-8-airplanes-70/11602404-ply-rolled-fuselage-part-deux-1-2a-mini-skorch.html
Yeah, you're right this plane does call you name, if I was going to scratch build something....this would be it!!
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: New or Nearly New Cox 020 Cylinder & Piston
Yes that's me I use Pond Skipper handle at RCU and Amp Abuser at RC Groups
The Skorch is Lil Speedy's big brother.
There is a thread for just the Lil Speedy will dig it up was originally design for a TD .010 then later upgraded to the .020 which immediately turned it into a blistering ball of micro nitro fun. I had made the firewall a tad big for the .010 so the
TD .020 could be used on the nose, the battery was moved a bit more rearward to keep the CG on the money.
This one is the one:
Thread: Cox TD .010 Ply Rolled Fuselage 3Ch Speeder
http://www.rcuniverse.com/forum/1-2-1-8-airplanes-70/11597545-cox-td-010-ply-rolled-fuselage-3ch-speeder.html
Here is the Skorch
The Skorch is Lil Speedy's big brother.
There is a thread for just the Lil Speedy will dig it up was originally design for a TD .010 then later upgraded to the .020 which immediately turned it into a blistering ball of micro nitro fun. I had made the firewall a tad big for the .010 so the
TD .020 could be used on the nose, the battery was moved a bit more rearward to keep the CG on the money.
This one is the one:
Thread: Cox TD .010 Ply Rolled Fuselage 3Ch Speeder
http://www.rcuniverse.com/forum/1-2-1-8-airplanes-70/11597545-cox-td-010-ply-rolled-fuselage-3ch-speeder.html
Here is the Skorch
1/2A Nut- Top Poster
- Posts : 3402
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Similar topics
» Wanted: Cox .15 piston, or piston/cylinder - FOUND!
» Where to buy Cylinder and piston 020 pee wee
» Cox .15 piston/cylinder
» WTB: .051 Piston/Cylinder
» .051 Piston / Cylinder mfg
» Where to buy Cylinder and piston 020 pee wee
» Cox .15 piston/cylinder
» WTB: .051 Piston/Cylinder
» .051 Piston / Cylinder mfg
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum