- Joined
- Mar 6, 2011
- Messages
- 1,419
Okay, here is one of my new FE Outboard Lower Unit Concept drawing that I am going to send out for quote and have made for my current O/B Hydro project. Yea I know it's an FE but all the things the nitro car motors will need is there. Notice how extremely low the mounting plate is. This drops the c/g of the unit considerably lower that any other unit available for nitro. Also notice the engine is laying at 40 degrees.
This is a 7.5 size cable I'm showing you so that yall can get ideas for a 3.5cc size unit. The radius cable radius is the same radius of the K&B 7.5. This unit is a highly modified configuration of Wedall's Gas lower unit.
The skeg is offset and is part of the cav-plate. The radius edge construction makes it very strong and the skeg has a rigger support that reduces flex (this rigger will ride clear of the waters surface and cause no water drag at plane) The cable is squared on both ends just as a typical outboard. The prop assembly housing is a replaceable strut type construction and easy to machine and replace if needed.
Like Wendall's unit, my FE version is going to be machined from black delrin to be as light as possible. If someone will take some interest in this idea for nitro and build a purpose designed lower unit for car engines you could end the strangle hold that outboard manufacturers have had on these classes for that past 40 years.
If yall will pool all your talents and machine capabilities together and maybe build something like this as a collective manufacturing group this could be a solution for the 3.5 class. Racing outboards is going to be a hard sell for yall if you don't have something that can be bought off the shelf as a complete unit or a partial kit of some kind. Anyway, there is an idea for you to think about. - Carl
Drawing is only a concept.
This is a 7.5 size cable I'm showing you so that yall can get ideas for a 3.5cc size unit. The radius cable radius is the same radius of the K&B 7.5. This unit is a highly modified configuration of Wedall's Gas lower unit.
The skeg is offset and is part of the cav-plate. The radius edge construction makes it very strong and the skeg has a rigger support that reduces flex (this rigger will ride clear of the waters surface and cause no water drag at plane) The cable is squared on both ends just as a typical outboard. The prop assembly housing is a replaceable strut type construction and easy to machine and replace if needed.
Like Wendall's unit, my FE version is going to be machined from black delrin to be as light as possible. If someone will take some interest in this idea for nitro and build a purpose designed lower unit for car engines you could end the strangle hold that outboard manufacturers have had on these classes for that past 40 years.
If yall will pool all your talents and machine capabilities together and maybe build something like this as a collective manufacturing group this could be a solution for the 3.5 class. Racing outboards is going to be a hard sell for yall if you don't have something that can be bought off the shelf as a complete unit or a partial kit of some kind. Anyway, there is an idea for you to think about. - Carl
Drawing is only a concept.
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I have never had any CoG issue with gearbox setup. The boat are fast and reliable. You can pick an engine of your choice, find the optimal gear ratio based on prop and course, then you’re good to go.
