Originally Posted by ian parkes
I just folowed this link posted by Blackroady in another thread . Now i thought propguards reduced performance , but the manufacturer here claims it improves thrust and improves fuel economy .
So why don't we all use them then
Engine parts the manufacturer doesn't want to include in a current production model, will be someone else's bussiness to make a high margin profit. Inventors are welcome!
There are issues to them: (Quoted from Prop Guard Web Page)
To obtain optimal performance out of your motor with the Prop Guard® installed, (*) you may need to change your propeller diameter: 9" Prop Guard® up to 8.5" prop, 11" Prop Guard® up to 10.5" prop, 14" Prop Guard® up to 13.5" prop, and 16" Prop Guard® up to 15.5" prop.
The closer the prop blades are to the Prop Guard® rings, it will optimize your performance, handling and will not create a drag. Your motor will also have to be trimmed to a setting of optimal performance.
A matter to buy one spending between $ 150 to 200 per unit to test with/without to experiment differences + $$ to buy bigger diam prop in case yours doesnt' work properly. A prop-guard guinea pig with financial resources is wanted...