| Thorp Air Command - T18.net http://thorp18.com/thorpforum/ |
|
| canopy rear vent http://thorp18.com/thorpforum/viewtopic.php?f=7&t=8015 |
Page 2 of 2 |
| Author: | Jeff J [ Fri Nov 11, 2016 7:18 pm ] | ||||
| Post subject: | Re: canopy rear vent | ||||
Mine is similar to Rich's except for the control. His control maybe easier to access.
|
|||||
| Author: | Jeff J [ Fri Nov 11, 2016 9:36 pm ] |
| Post subject: | Re: canopy rear vent |
oops...meant to say "...similar to what Rich posted" |
|
| Author: | 1albee [ Sat Nov 12, 2016 7:05 am ] |
| Post subject: | Re: canopy rear vent |
Jeff, I really like what you have, not having to mess with the Plexiglas. On the rear part of my canopy I have a angle that engages into a roller to hold down the rear of the canopy in flight. I will need to look to see if there is enough room to add the vent. I also like the idea of the vent opening outward but am trying not to add any induced drag. Thanks Phil |
|
| Author: | Bill Williams [ Sat Nov 12, 2016 8:05 am ] |
| Post subject: | Re: canopy rear vent |
I believe you will find that the rear of canopy is a high pressure area. The Thorp fuselage in itself is an airfoil. |
|
| Author: | Jeff J [ Sat Nov 12, 2016 8:40 am ] |
| Post subject: | Re: canopy rear vent |
I wish I could take credit for it but it came that way from the builder. NL#125 shows the door on the plexiglass. |
|
| Author: | Bill Williams [ Sat Nov 12, 2016 8:48 am ] |
| Post subject: | Re: canopy rear vent |
When I installed my canopy I just could not bring myself to cut a hole in my roof, hence, I made air inlets outboard of the wing gap and ran flex hose to eyeball vents on the instrument panel. You have to close them off if you want to unfold a chart, still use them, if not it ends up in the baggage compartment. |
|
| Author: | thorpdrvr [ Sat Nov 12, 2016 11:26 am ] |
| Post subject: | Re: canopy rear vent |
If you decide to cut a hole in the canopy, fly it with just the hole before you make a door. If you are not satisfied with the airflow, fabricate a temporary scoop on the outside of the hole and tape it to the canopy. If you feel the increased airflow makes it worthwhile, make an outward opening door instead of an inward opening one. The extra parasitic drag from an outward opening one is practically next to nothing. |
|
| Author: | Rich Brazell [ Sat Nov 12, 2016 1:20 pm ] |
| Post subject: | Re: canopy rear vent |
Attachment: Copy (2) of S-18 paint 001.jpg [ 925.08 KiB | Viewed 9823 times ] Attachment: Final assembly 003.jpg [ 1.42 MiB | Viewed 9823 times ]  No holes in canopy . Easy to adjust flow or direction .  Blow air on face or up skirt ! BOOM !RB 
|
|
| Author: | TonyNZ [ Tue Nov 15, 2016 11:13 pm ] |
| Post subject: | Re: canopy rear vent |
Nice looking bird there Rich! I have the eye balls as well and mine are on the engine side cowls (have updraft cooling so no heat exiting in standard place). Work perfectly well though our ave temps in summer are around 25 - 30 C. Tony S  (can't do the affro thats your signature!)ZK-VMS |
|
| Author: | TonyNZ [ Tue Nov 15, 2016 11:17 pm ] |
| Post subject: | Re: canopy rear vent |
Geez, I should read the post before pushing buttons! The eye balls are in the panel and i have NACA scoops on the engine side cowls. Plenty of draft! Tony S |
|
| Author: | TonyNZ [ Tue Nov 15, 2016 11:18 pm ] |
| Post subject: | Re: canopy rear vent |
Geez, I should read the post before pushing buttons! The eye balls are in the panel and i have NACA scoops on the engine side cowls. Plenty of draft! Tony S |
|
| Author: | 1albee [ Sun Nov 20, 2016 10:03 pm ] |
| Post subject: | Re: canopy rear vent |
Got my rear canopy vent installed. Took everybody's input stirred it all together and ended up with a 5" X 2" vent in the Plexiglas canopy. The reason I ended up with this is I have a canopy hold down for the rear of the canopy that will not allow the vent in the aluminum sheet. Some said start small so I did. I built a operating latch and lock out of billet aluminum, the only thing left is to fab a control rod to go between the two parts. Thank you all for your advise and help. Phil 118BC |
|
| Page 2 of 2 | All times are UTC - 6 hours [ DST ] |
| Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |
|