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Speed,Combat,Scale,Racing => Speed Talk => Topic started by: brian sisson on September 12, 2023, 08:03:19 AM

Title: 1/2a proto
Post by: brian sisson on September 12, 2023, 08:03:19 AM
The rules are a little confusing for me for the 1/2 a proto profile. Do you have to run a beam mount engine and seperate tank? Or can a cox with a tank be run. like a black widow? I know its prolly not the quickest engine but maybe get my feet wet. Thanks
Title: Re: 1/2a proto
Post by: spare_parts on September 12, 2023, 08:53:55 AM
I recently asked someone about this as I have one of those goofy Profi 0.8 radial mount (https://technohobby.com.ua/engines/engines-profi/ep08f1c.html) with the carb offset 90°. I saw a Cyclon .049 (http://www.gregorie.org/freeflight/f1j/cyclon049/cyclon049.html) (without pipe obviously) on Henry Nelson's 1/2A Proto a couple weeks ago. The crank centerline and cylinder should still be as the rules require. It looked like a Mouse fuselage with the cylinder on the side. Also pay attention to the fairing rule, can't extend beyond 1/4 chord, which is different than Mouse.
Title: Re: 1/2a proto
Post by: Dave Rigotti on September 12, 2023, 09:50:59 AM
It will be fine. Just side mount the cylinder to be parallel to the wing leading edge outboard.
A short firewall fairing will be OK.
Keep it as light as possible and have fun!!!
Title: Re: 1/2a proto
Post by: brian sisson on September 13, 2023, 07:37:25 PM
Thanks fellas
Title: Re: 1/2a proto
Post by: Motorman on September 14, 2023, 11:22:17 AM
Deleted
Title: Re: 1/2a proto
Post by: brian sisson on September 14, 2023, 07:05:29 PM
 ;)
Anybody that protests a Cox reed engine in 1/2a proto would have to be the biggest weasle in CL speed.
Title: Re: 1/2a proto
Post by: Dennis Toth on September 29, 2023, 08:51:39 AM
Since there are tons of these reed valve Cox engines available, cheap, it would be an interesting twist to the event.

Best,  DennisT
Title: Re: 1/2a proto
Post by: Dennis Toth on October 26, 2023, 01:55:25 PM
Brian,
Post some photos of you Baby Bee proto ship. Maybe could be a fun twist on the 1/2A proto event.

Best,   DennisT
Title: Re: 1/2a proto
Post by: bob whitney on October 26, 2023, 10:52:07 PM
`basically a profile mouse 1 with 2 wheels and a clear canopy and 45 sq in wing i believe