Ziroli b-25 engine help wanted  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> Ziroli b-25 engine help wanted
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Ziroli b-25 engine help wanted - 1/24/2003 7:32:45 AM   
Reggie


 

Posts: 18
Joined: 3/13/2002
From: Camden, SC,
Status: offline 		ok, I have an engine dilema, what to use??
I have 2 hp120 twins that I originally wanted to put on,
but would like to know from the folks that fly them what they use and why.
101" b25BTW, calls for 23cc gassers or 108 2 strks .
HP 120 twin 3.95bhp at 2lbs3oz swings a 16x4 at @ 18000
With the time invested so far in I'd hate to build a problem, know what I mean???
Do I need the weight of a set of gas motors to get the balance better?
thanks, Reggie
       Post #: 1

Ziroli b-25 engine help wanted - 1/24/2003 5:07:02 PM   
beepee


 

Posts: 737
Joined: 2/8/2002
From: Houston, TX, USA
Status: offline 		Reggie,

A 16" prop turning 18,000 rpm? Your tips are going supersonic. Wouldn't want to be around for that ... not without my ear plugs and flack jacket.

The engines on the B25 are close enough to the CG engine weight will have little impact on the CG location. I would stick close to something that will turn a prop around the same speed as the G23, say a 16x8 to about 8500.

How is your total weight coming out?

Good luck!

Bedford

(in reply to Reggie)
       Post #: 2

Bomber Power - 1/27/2003 1:58:22 AM   
Saberjock


 

Posts: 117
Joined: 10/20/2002
From: Winnipeg, MB,
Status: offline 		Mine flew well (and still does) with G-23's. If I were doing it today, I would consider the G-26 as a better choice. Bit more power, same weight. BTW mine was built to 28 lbs dry.

Tex Gehman

_____________________________

C.W. (Tex) Gehman
Slime is Crime

(in reply to Reggie)
       Post #: 3

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> Ziroli b-25 engine help wanted
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