TIEBREAKER-POLL **COX-ENGINE-OF-THE-MONTH** (July 2023)

GallopingGhostler wrote:Mauricio, esta es muy interesante. That is very interesting. Out of curiosity, I looked into Jacob's manuals section. The Apache helicopter engine is mounted a little different.


The engine being mounted slightly off center appears that by doing so, compensates with better centering of the engine without a counterbalance. Although it places the engine prop slightly off center, may not be a problem because the main rotor rotates at a slower rotational speed.

I cannot imagine that Leroy Cox would make a helicopter without proper balancing. The reason why I asked is that perhaps after Mr. Cox sold his company, toward the end, they were made cost cutting moves by eliminating any form of counterbalancing?

Even in the early balsa designs, which used the same power arrangement, the designers always incorporated a counterbalance.

I just thought it interesting that your helicopter uses an earlier mount for a tank engine, and the holes for the horseshoe engine, perhaps the company that marketed Cox in South America did the modifications?

sosam117 wrote:Congratulations Mauricio,
I tip my hat to you on the win.
Your helicopter deserve the win after all the work you did to make it fly again.

I don't feel so bad coming in 2nd after a fine job you did.

rdw777 wrote:Congratulations Mauricio!!! Beautiful engine and helicopter…. I know with your mechanical intuition and skills you will get it balanced perfectly…. Please share more videos when you take it to fly!

Roberto!

MauricioB wrote:

Kim wrote:YAYE MAURICIO!!!!!!
CONGRATS DUDE!!!!

thanks KIM, I always watch your videos, your notes, and the way you have fun...it's a shame that there is so much distance, otherwise I think we would do a lot of hobby things together!

GallopingGhostler wrote:El helicóptero de Mauricio gave me an idea that one could make their own out of balsa. Outerzone has several plans, one, an early 1952 design with 20 inch (508 mm) rotor:
https://outerzone.co.uk/plan_details.asp?ID=5723




It uses a similar type contrapeso (counterweight) to Mauricio's. Only improvement suggested by the magazine editor was to double the width of the blades. As is, I imagine that a .020 Pee Wee or .010 Tee Dee could be used. They have about the same power as the earlier .049's.

getback wrote:WOW she really got up and out that time LOL I thought you were riding a motor bike till i realized the film was in fast forward   Fun times I will have to make sure i have plenty of room when I fly mine >>
 Have An Egg

MauricioB wrote:Hey friend, it seems that they copied my idea!!, hahaha     ... well, it seems that lateral thoughts exist, or the common sense of things, that plan is from many years ago, because I knew that there were plans but there weren't seen in detail its construction. Then think about placing this device, I'm on the right track.

Oye amigo, parese que me han copiado la idea!!, jajaja...bueno parece que existen los pensamientos laterales, o bien el sentido comun de las cosas, ese plano es de muchos años atras, pues sabía que existian planos pero no habia visto en detalle su construcción. Parece entonces que colocar este dispositivo, estoy en el camino correcto.

rdw777 wrote:Really nice flight Mauricio!!! I was going to ask how your balance project went but looks like it runs very smooth, Great work! I like those old balsa heli plans like George posted… Particularly those by Roy Clough …. He had figured out a method to get some get some cyclic action for directional control even though they were free flight…. With an electric tail rotor, electronic gyro, And some simple rc it might be possible to let one free flight up, Then steer it back after the engine run…

GallopingGhostler wrote:

MauricioB wrote:Hey friend, it seems that they copied my idea!!, hahaha     ... well, it seems that lateral thoughts exist, or the common sense of things, that plan is from many years ago, because I knew that there were plans but there weren't seen in detail its construction. Then think about placing this device, I'm on the right track.

Oye amigo, parese que me han copiado la idea!!, jajaja...bueno parece que existen los pensamientos laterales, o bien el sentido comun de las cosas, ese plano es de muchos años atras, pues sabía que existian planos pero no habia visto en detalle su construcción. Parece entonces que colocar este dispositivo, estoy en el camino correcto.

Amigo mio, sobre el otro, no importa. Aunque los diseños parecen similar, no obstante esto no significa nada. Tu eres un ingeniero práctico. Como tal, las grandes personas piensan igual.
My friend, about the other, it doesn't matter. Although the designs seem similar, however that means nothing. You are a practical engineer. As such, great people think alike.