Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


What Makes a BW more powerful then a BB ? Babe_b10
Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Why did this never occur to me?
by Oldenginerod Today at 5:06 am

» Help with a coil and condenser set-up....
by JohnRTSE Today at 2:19 am

» 1940 SYNCRO B-30 SLAG
by JohnRTSE Today at 2:05 am

» Parts built RR-1
by balogh Today at 12:13 am

» .049 Versus .051 Power
by 706jim Yesterday at 11:56 pm

» White PT-19 Trainer?
by Steve boone Yesterday at 11:55 pm

» What is Cox Avion?
by happydad Yesterday at 11:19 pm

» Anyone ever seen one of these ?
by happydad Yesterday at 8:52 pm

» My Never Ending Quest to build a plane I don’t care if I crash.
by 944_Jim Yesterday at 6:52 pm

» Around the pole flying
by F4D Phantom II Yesterday at 6:16 pm

Cox Engine of The Month
September-2020
sosam117's

"Traded an electric charger for this "Complete" (original) Cox Thimble Drome Olympic .15 engine. Right corner is photo as received."



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


What Makes a BW more powerful then a BB ? Empty

What Makes a BW more powerful then a BB ?

Go down

What Makes a BW more powerful then a BB ? Empty What Makes a BW more powerful then a BB ?

Post  akjgardner on Tue Mar 03, 2020 5:15 pm

I Just received my 1st Black Widow in the Mail.(Actually 3) After rebuilding one and running it I was surprised How Much More Power It Has Then A Babe Bee. Could Someone explain this to Me ? Thanks
akjgardner
akjgardner
Platinum Member
Platinum Member

2020 Supporter

Posts : 1102
Join date : 2014-12-28
Age : 61
Location : Milan Indiana

Back to top Go down

What Makes a BW more powerful then a BB ? Empty Re: What Makes a BW more powerful then a BB ?

Post  NEW222 on Tue Mar 03, 2020 5:32 pm

I believe it all has to do with the porting. Beyond this, I will have to also wait for someone with more experience. As well, I believe that the later Black Widows also had a boost port as well. Mine is not here, so cannot check at the moment.
NEW222
NEW222
Diamond Member
Diamond Member

Posts : 2866
Join date : 2011-08-13
Age : 42
Location : oakbank, mb

Back to top Go down

What Makes a BW more powerful then a BB ? Empty Re: What Makes a BW more powerful then a BB ?

Post  balogh on Tue Mar 03, 2020 5:51 pm

BW-s were built exclusively with No 1 cylinder that has 2 bypass ports and sub piston induction whereas most BB-s had No 2 cylinder with only 1 bypass. In addition their venturi  also has larger diameter than BB-s. I think these are the main differences thst make BW-s more powerful than BB-s.

I have a well used 1st generation BW in excellent condition and 2 others made in the late 1980-s but none of them has booster flutes. The piston-cylinder fit of these later, brand new BW-s is good but sloppier than the old, used one.
balogh
balogh
Top Poster
Top Poster

2019 Supporter

Posts : 3113
Join date : 2011-11-06
Age : 61
Location : Budapest Hungary

Back to top Go down

What Makes a BW more powerful then a BB ? Empty Re: What Makes a BW more powerful then a BB ?

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum