Academy of Model Aeronautics

District VII Members Forum
It is currently Sat Feb 24, 2018 12:07 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Webra 12
PostPosted: Fri Dec 27, 2013 12:57 pm 
Offline

Joined: Sat Oct 27, 2007 3:44 pm
Posts: 376
Since its been awhile since there has been anything new on engines posted I thought that I'd show you my latest conversion. Again the work is done by Jim Lee and this is a beautiful job on an unusual engine. Not too many of these and they were really expensive when I got this in the 90's. It had a retail of $130 and the muffler was extra. This is a Webra 12 Speed so it is really in the high performance range for a small engine. Obviously twin BB and schnurle ported. I used this in R/C on one model back then and it was as they said then 'the bomb'
Obviously not for a sedate stunt job but now to find that one particular model that can benefit from a serious upgrade in power and see what this can do on a C/L model


Attachments:
DSC01668_edited-1.jpg
DSC01668_edited-1.jpg [ 47.6 KiB | Viewed 235 times ]
DSC01667_edited-1.jpg
DSC01667_edited-1.jpg [ 48.03 KiB | Viewed 209 times ]
DSC01666_edited-1.jpg
DSC01666_edited-1.jpg [ 39.11 KiB | Viewed 203 times ]
Top
 Profile  
 
 Post subject: Re: Webra 12
PostPosted: Fri Dec 27, 2013 10:33 pm 
Offline

Joined: Wed Apr 06, 2005 10:41 pm
Posts: 538
Location: Clio, MI
Dennis,
Looks pretty cool. Can you flip the muffler around to a more conventional position?

On an unrelated note, what is the fastest conventional 25 that you know of?

John


Top
 Profile E-mail  
 
 Post subject: Re: Webra 12
PostPosted: Sat Dec 28, 2013 1:27 am 
Offline

Joined: Sat Oct 27, 2007 3:44 pm
Posts: 376
John Paris wrote:
Dennis,
Looks pretty cool. Can you flip the muffler around to a more conventional position?

On an unrelated note, what is the fastest conventional 25 that you know of?

John



John,

Your not going to believe this but I'm recommending a Fox engine. Specifically the Fox 25BB. This is a really good competitor in speed limit combat and for most sport flying will wake up your senses.
It also has the advantage of being able to have its cylinder rotated to any position before the first run of the engine. It is truly potent. The cost is not extravagant and is competitive with most of the other offerings.
Another engine that you might consider and it is available again is the Norvel 25. This was the runaway favorite of R/C warbird combat until Norvel/Revite folded a few years ago. Easily almost too fast for speed limit combat and it's light to boot, its worth your effort to try and add one to your fleet. The Norvel 15 venturis and nva fits or you can get set up at Lee Machine Shop. Jim Lee does great work at reasonable prices.

Forgot to answer your question.
No it is strictly a rear exhaust engine.


Top
 Profile  
 
 Post subject: Re: Webra 12
PostPosted: Sat Dec 28, 2013 4:35 am 
Offline

Joined: Wed Apr 06, 2005 10:41 pm
Posts: 538
Location: Clio, MI
Dennis,
Thank you for the response. I tried to purchase a Fox before I returned to Korea but they were out of stock. The racing over here is limited to 25s so I wanted to get the fastest one I could find. Did not realize that Norvel had made a 25 and I am sure that it would be fast. The FP 25 I use is okay for now though.

Regarding your engine, looking at it from the front with the cylinder up, can you move the muffler from the right to left? You have it in kind of an unconventional position in your picture except for an inverted mounting position.

John


Top
 Profile E-mail  
 
 Post subject: Re: Webra 12
PostPosted: Sat Dec 28, 2013 11:56 am 
Offline

Joined: Sat Oct 27, 2007 3:44 pm
Posts: 376
John,

Yes the muffler can be flipped. Just stuck it on for the pictures and wasn't too concerned about the correct position


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group