Don't forget to check your spam folder if you don't get an activation email after joining!!

Down and side thrust

General discussion on any topic which doesn't have a natural home on any of the other boards.
Post Reply
harry curzon
Posts: 96
Joined: 21 Jul 2018, 09:32
Location: Gloucestershire

Down and side thrust

Post by harry curzon »

I have acquired a second hand Tangent Nimbus 4 to which I am fitting an electric motor in the nose. Can anyone give me guidance as to a sensible amount of down and side thrust that would help it, or is none required? Some friends build in as much as 7 degrees of down thrust to their scale gliders.

The model is 6m span, weighs around 9.8kg, power is 8S pushing about 2.5kW through a 16x8 prop, 400kv Hacker motor at around 9800rpm.

Phill Tadman
Posts: 397
Joined: 18 Aug 2015, 20:38
Location: South Cambs

Re: Down and side thrust

Post by Phill Tadman »

Hey Harry,

I asked a similar question here: viewtopic.php?f=53&t=3006&p=27043#p27043

General consensus was for between 2 and 6 degrees down thrust, but not to bother with side thrust.

Phill

harry curzon
Posts: 96
Joined: 21 Jul 2018, 09:32
Location: Gloucestershire

Re: Down and side thrust

Post by harry curzon »

Thanks for that info Phil, I will put in a few degrees of down.

Elliot Howells
Posts: 248
Joined: 18 Mar 2015, 08:18
Location: West Wales
Contact:

Re: Down and side thrust

Post by Elliot Howells »

I used 8 degrees on my ASH26 (6m) and that's perfect. Some of the smaller leccy gliders seem to have even more than that.

I'd be interested to know why high aspect ratio gliders with long moment arms need so much, perhaps it's decalage related?

Ell.

Post Reply