Glow Engines Discuss RC glow engines

Webra .40 (6,5ccm) RC Blackhead with rear fan

Reply
Old 05-23-2008, 07:14 PM
  #1
Tanque
Thread Starter
 
Tanque's Avatar
 
Join Date: Feb 2003
Location: East Bay, CA
Posts: 1,972
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Webra .40 (6,5ccm) RC Blackhead with rear fan

I use what seems to be a limited production, little documented variation of the original 1970/80s Webra Blackhead .40
that has a crankshaft drive 'power takeoff' for a fan. Webra ( or a contractor?) accomplished this by installing a crankshaft with a longer than normal crankpin, the extra protrusion of which is used to drive a shaft mounted in a dual ball bearing equipped mount that substitutes for the rear crankcase cover. I have a number of these engines in various of my (land based) models and they've performed so well over the years. Sturdy as the base Blackhead 40, easy to maintain and powerful enough to do the job intended.

I've found precious few, none actually, references to this engine. I thought I'd heard once that they were made up for Schulter, the one time rc heli company but found nothing to support this either.

My question is this. Do any of you out recall seeing write ups on this variation? Any and all references would be welcome.
While I'd welcome any examples of the engine as well that isn't my prime reason for posting this, I really would like to hear from others with experience and written material about this engine.

Thanks,

Jerry
Tanque is offline  
Reply With Quote
Old 05-23-2008, 09:12 PM
  #2
Broken Wings
 
Broken Wings's Avatar
 
Join Date: Jan 2003
Location: Cocoa, FL
Posts: 2,082
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Hb did the same thing, used in Helicopters and model boats. I believe they were called Stamo's.
Attached Thumbnails
Click image for larger version

Name:	Ge95735.jpg
Views:	20
Size:	76.2 KB
ID:	955528  
Broken Wings is offline  
Reply With Quote
Old 05-23-2008, 10:53 PM
  #3
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

I happen to have one of those HB versions. I will get pics for you later.
Kmot is offline  
Reply With Quote
Old 05-24-2008, 04:21 PM
  #4
Tanque
Thread Starter
 
Tanque's Avatar
 
Join Date: Feb 2003
Location: East Bay, CA
Posts: 1,972
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Quote:
I will get pics for you later.
I'd like to see that please.

Thanks.

Jerry
Tanque is offline  
Reply With Quote
Old 05-24-2008, 05:13 PM
  #5
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Here you go Jerry:
Attached Thumbnails
Click image for larger version

Name:	Vt57288.jpg
Views:	16
Size:	59.1 KB
ID:	955954   Click image for larger version

Name:	Ni23321.jpg
Views:	15
Size:	64.7 KB
ID:	955955   Click image for larger version

Name:	Ty64288.jpg
Views:	12
Size:	86.7 KB
ID:	955956   Click image for larger version

Name:	Ex68388.jpg
Views:	15
Size:	145.6 KB
ID:	955957  
Kmot is offline  
Reply With Quote
Old 05-24-2008, 09:06 PM
  #6
Tanque
Thread Starter
 
Tanque's Avatar
 
Join Date: Feb 2003
Location: East Bay, CA
Posts: 1,972
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Thanks both of you for the photos.

I had a hand at flying helis in the late 70s through the mid 80s. I started with Kavan's models and they had the fan driven from the prop washer. Seeing these HB engines and the Webras that I have it seems they were not that popular were they? From my allpication they seem very compact and efficient. I'm not very engine savvy other than for a few specific types but it is odd these never really caught on, perhaps more costly?

My application is shown here:


And there are few engines that would serve the need as well as the Webra 40 euipped with the rear fan.

I'm actually engaged at the moment in replicating the parts for a regular version of the engine to convert it to this configuration.

Jerry
Tanque is offline  
Reply With Quote
Old 05-24-2008, 09:45 PM
  #7
LeeHop
 
LeeHop's Avatar
 
Join Date: Apr 2005
Location: Aurora, OR
Posts: 248
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Tanque, I gotta ask...what is it?
LeeHop is offline  
Reply With Quote
Old 05-24-2008, 10:07 PM
  #8
rainedave
 
rainedave's Avatar
 
Join Date: Jul 2005
Location: Richmond, VA
Posts: 6,329
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

A paddlewheel boat? I'd like to know, too.

David
rainedave is offline  
Reply With Quote
Old 05-24-2008, 10:26 PM
  #9
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

I want to see video of those machines running.
Kmot is offline  
Reply With Quote
Old 05-24-2008, 10:29 PM
  #10
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

It is a drive train for a tank:

http://www.geocities.com/pentagon/2828/jp.html
Kmot is offline  
Reply With Quote
Old 05-24-2008, 10:43 PM
  #11
Tanque
Thread Starter
 
Tanque's Avatar
 
Join Date: Feb 2003
Location: East Bay, CA
Posts: 1,972
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Quote:
I want to see video of those machines running.
Quote:
A paddlewheel boat? I'd like to know, too.
Quote:
Tanque, I gotta ask...what is it?
They are ( there's two complete units) 3 fwd speed+1reverse transmissions for rc tanks. These are braked differential
transmissions. The Webra is started via self starter. Sort of a "power pack".

Here's one mounted and running in the lower hull of one of my models:


another vew:


While it looks as it was going fast it in fact wasn't but a crawl, top speed isn't very fast by design, but they are powerful.

Here's a video clip albeit not a very good of one of the models running( from the model's perspective):
[link=http://www.youtube.com/watch?v=s2XYYpiV1Ws]Panther in Action[/link]

I have more info on my website [link=http://www.geocities.com/Pentagon/2828/]Armor Group West[/link]


Jerry
Tanque is offline  
Reply With Quote
Old 05-25-2008, 12:18 AM
  #12
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Darned video won't load.
Kmot is offline  
Reply With Quote
Old 05-25-2008, 09:16 PM
  #13
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Tanque (Tank!):

The video on Youtube will not load. Not yesterday, not today. Perhaps you could upload it to RCU Videos?
Kmot is offline  
Reply With Quote
Old 05-25-2008, 10:22 PM
  #14
LeeHop
 
LeeHop's Avatar
 
Join Date: Apr 2005
Location: Aurora, OR
Posts: 248
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

Tanque's YouTube video worked for me...
LeeHop is offline  
Reply With Quote
Old 05-25-2008, 11:51 PM
  #15
Kmot
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,906
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Webra .40 (6,5ccm) RC Blackhead with rear fan

All I get is a rotating circle thing. Hmmm........ [sm=confused.gif]
Kmot is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 10:54 AM.