Home
Rules
Latest images
Search
Register
Log in
Log in
Search
Latest topics
» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (May 2024)by getback Today at 7:33 am
» A prototype Cox Reed-valve marine engine
by F4D Phantom II Yesterday at 7:00 pm
» World's largest weathervane
by Cox International Yesterday at 5:51 pm
» Jim Walkers FireBee - This is going to be fun
by rsv1cox Yesterday at 5:27 pm
» Here we go again... another Lawn-Boy
by rsv1cox Yesterday at 6:50 am
» Norvel Needle Needed
by Greenman38633 Yesterday at 4:02 am
» My Cox .049 Marine inboard engine
by 1/2A Nut Wed May 08, 2024 11:41 pm
» Jim Walker Firebaby
by rsv1cox Wed May 08, 2024 7:26 pm
» Roddie-Rigger.. a 2005 original design
by roddie Wed May 08, 2024 7:04 pm
» music vids.. some of your favorites
by HalfaDave Wed May 08, 2024 6:55 pm
» Help Pee Wee tank cap .020
by rdw777 Wed May 08, 2024 1:30 pm
» Revivng Some Childhood Classics
by getback Wed May 08, 2024 8:21 am
Cox Engine of The Month
CEF Traveling Engine
Win This Engine!
Live on Patrol
Scotch-Yoke Glow Twin
Page 1 of 1
Scotch-Yoke Glow Twin
michaelherbst1 Tue Nov 14, 2023 12:44 am
Good day everybody,
Attached photos of a unique model boxer engine.
It was built according to the
with sliding guide principle.
The cylinders should be filled by milling out the connecting rods.
I restored the engine, it consists of two 2.5 cc Webra Glow cylinders,
The pistons are similar to Cox pistons without piston pins.
The engine ignites and starts briefly, but doesn't crank, I suspect the filling via the connecting rods isn't quite full.
I consider the engine to be a very interesting test engine, it dates from the early 1960s.
Maybe someone on the forum knows more about it.
Greetings
Michael
Attached photos of a unique model boxer engine.
It was built according to the
with sliding guide principle.
The cylinders should be filled by milling out the connecting rods.
I restored the engine, it consists of two 2.5 cc Webra Glow cylinders,
The pistons are similar to Cox pistons without piston pins.
The engine ignites and starts briefly, but doesn't crank, I suspect the filling via the connecting rods isn't quite full.
I consider the engine to be a very interesting test engine, it dates from the early 1960s.
Maybe someone on the forum knows more about it.
Greetings
Michael
michaelherbst1- Moderate Poster
- Posts : 15
Join date : 2023-09-18
michaelherbst1- Moderate Poster
- Posts : 15
Join date : 2023-09-18
Re: Scotch-Yoke Glow Twin
rsv1cox Tue Nov 14, 2023 7:14 am
Wow, the Porsche Boxter it isn't, more like the VW Beetle but it is interesting in design. I wish I could help you out, maybe someone here can. I enjoy seeing these home-built engines.
rsv1cox- Top Poster
Posts : 10611
Join date : 2014-08-18
Location : West Virginia
Re: Scotch-Yoke Glow Twin
franzkleber Tue Nov 14, 2023 7:21 am
Hello!
The transfer ports are obtained inside the connecting rod ?
Perhaps the problem is that during movement not enough secondary pressure is created inside the crankcase.
Or rather, the pressure does not change because the volume does not change.
Being a boxer configuration when one piston is at top dead center the other is at bottom dead center and vice versa.
This would explain why it crackles with a primer but doesn't self-sustain
It's an interesting solution for a 4-stroke and not for a 2-stroke ....
The transfer ports are obtained inside the connecting rod ?
Perhaps the problem is that during movement not enough secondary pressure is created inside the crankcase.
Or rather, the pressure does not change because the volume does not change.
Being a boxer configuration when one piston is at top dead center the other is at bottom dead center and vice versa.
This would explain why it crackles with a primer but doesn't self-sustain
It's an interesting solution for a 4-stroke and not for a 2-stroke ....
franzkleber- Moderate Poster
- Posts : 24
Join date : 2016-01-29
Age : 59
Re: Scotch-Yoke Glow Twin
crankbndr Tue Nov 14, 2023 12:29 pm
Bourke engine used the scotch yoke. Good animation of how in the link.
Oldsmobile made a few but never went to market.
http://bourke-engine.com/BourkeEngine/
Oldsmobile made a few but never went to market.
http://bourke-engine.com/BourkeEngine/
crankbndr- Top Poster
- Posts : 3073
Join date : 2011-12-10
Location : Homestead FL
Re: Scotch-Yoke Glow Twin
michaelherbst1 Wed Nov 15, 2023 12:59 am
Good morning,
Thank you very much for the interesting information.
I also see it as the cylinders not being filled enough for combustion.
This model engine was built in the early 1960s by a model maker from Mannheim. The technical execution is very well done. I'll take the liberty of judging that because I've built a lot of engines myself.
I'm trying to put up a video to show how the motor works when the motor is turned by hand.
Many greetings to all model engine lovers.
Michael
Thank you very much for the interesting information.
I also see it as the cylinders not being filled enough for combustion.
This model engine was built in the early 1960s by a model maker from Mannheim. The technical execution is very well done. I'll take the liberty of judging that because I've built a lot of engines myself.
I'm trying to put up a video to show how the motor works when the motor is turned by hand.
Many greetings to all model engine lovers.
Michael
michaelherbst1- Moderate Poster
- Posts : 15
Join date : 2023-09-18
Similar topics» Rasant Twin Glow engines 0.98cc x 2
» ISO plans for a V Twin glow engine using Cox 049 cylinders, pistons, glowplugs
» Cessna twin engines twin boom model
» Weak glow plugs
» "Mining Precious Metals"...Well, Actually, Sorting Glow Plugs/Glow Heads
» ISO plans for a V Twin glow engine using Cox 049 cylinders, pistons, glowplugs
» Cessna twin engines twin boom model
» Weak glow plugs
» "Mining Precious Metals"...Well, Actually, Sorting Glow Plugs/Glow Heads
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum