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General control line discussion => Open Forum => Topic started by: frank mccune on March 09, 2022, 12:31:35 PM

Title: What plane to use a K&B .19 Series 71mounted for Stunt/Sport?
Post by: frank mccune on March 09, 2022, 12:31:35 PM

     Also in my junk drawer, I found a couple of the above engines.  They are both in great nick and should be used.  My question is which plane would be a good match for these oldies?  In my stash of already to fly planes, I have the following:

Shoestring Goldberg large

Flite Streak ARF

Shark 15

Nobler

Foam Combat plane

Magician 35

           If you have any experience re. the K&B  Series 71 .19  kindly share it.

           I also have some of the ST G20/.23 engines that have the same amount of power as the K/B engines but due to the ST spi, I can not use them with a muffler. 

     Suggestions, comments??

     Tia,

     Frank

Title: Re: What plane to use a K&B .19 Series 71mounted for Stunt/Sport?
Post by: Paul Wescott on March 09, 2022, 03:04:03 PM

Shark 15 Yes
Nobler: Nope.  Nobler Jr: Yes
Flite Streak: Nope.  Flite Streak Jr: Yes

PW

Title: Re: What plane to use a K&B .19 Series 71mounted for Stunt/Sport?
Post by: bob whitney on March 09, 2022, 03:51:04 PM

flight streak ARF deff yes had a norvel 15 dieseled and it flew great whole pattern no problem

Title: Re: What plane to use a K&B .19 Series 71mounted for Stunt/Sport?
Post by: John Park on March 10, 2022, 02:23:03 AM

This one: https://outerzone.co.uk/plan_details.asp?ID=1633 possibly with increased tail area.  Endless fun, and robust enough to keep going for YEARS - I'm still flying one I built in 1997.

Title: Re: What plane to use a K&B .19 Series 71mounted for Stunt/Sport?
Post by: Dennis Toth on March 11, 2022, 07:52:19 AM

Frank,
The K&B - Veco Series 71 .19 is a very powerful engine package, being ball bearing it is right there with the OS FP25 when run correctly. Even the straight K&B plain bearing .19 is right there with them as the timing and torque curve are the same (http://sceptreflight.com/Model%20Engine%20Tests/Veco%2019BB%20CL.html). If you read some of the posts the Brett B has done where he mentions the Veco BB 19 you will see that it is more powerful than a FOX 35 when run in a 2-2-2 high rpm/low pitch setup. Put a 9x4 APC prop (maybe 9 1/2) on it with ~10% N fuel with 25% ish 50/50 oil and go fly in any of those ships you mentioned. This engine has its roots as a speed engine and when class A was up to a .19 held many records. I like the Magician and Nobler.

Best,         DennisT