We're just about finished with our homemade defroster-system, so I'm posting a few pics.
The basics are two computer-fans which have the same size as Vans flanged ducts, some airhose, hoseclamps, a flanged bulkhead penetration, and "Y" duct connection and a three flanged ducts.
On my first -7, we used only one computerfan but the airmass is alittle too low, so on this -7, we've installed two fans and connected their airflow. Hopefully that'll give more defroster-function.
Here's an overwiew:
![](/community/proxy.php?image=http%3A%2F%2Fimg12.imageshack.us%2Fimg12%2F2659%2Fp1040647j.jpg&hash=a41fe90306700862ae1b67dad964e701)
The fans are mounted on each side of the hot air outlet by the FF:
![](/community/proxy.php?image=http%3A%2F%2Fimg339.imageshack.us%2Fimg339%2F701%2Fp1040657c.jpg&hash=e611ddbd1c2640cee3fecbf965eada1f)
Then, the two hoses are joined together:
![](/community/proxy.php?image=http%3A%2F%2Fimg687.imageshack.us%2Fimg687%2F4171%2Fp1040652xq.jpg&hash=43e7a32c997a98adb93f18c713b64f1b)
Then through a couple of bulkheads:
![](/community/proxy.php?image=http%3A%2F%2Fimg266.imageshack.us%2Fimg266%2F9262%2Fp1040656.jpg&hash=4e6bca619686c2215d077dc116cf97ea)
And finally up towards the outlet:
![](/community/proxy.php?image=http%3A%2F%2Fimg832.imageshack.us%2Fimg832%2F3918%2Fp1040649t.jpg&hash=06aaafd24ee2bad0b6b5fc3481e03f3c)
Overhead the outlet, we've made a hole in the glareshield in the same size as the outlet.
The airflow will then clear a hole in front of the pilot (the plane has the right seat as pilot seat) enough for taxing and departure.
PS: wr're in the middle of wiring now, so the "wire-madness" will hopefully be done with soon...![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The basics are two computer-fans which have the same size as Vans flanged ducts, some airhose, hoseclamps, a flanged bulkhead penetration, and "Y" duct connection and a three flanged ducts.
On my first -7, we used only one computerfan but the airmass is alittle too low, so on this -7, we've installed two fans and connected their airflow. Hopefully that'll give more defroster-function.
Here's an overwiew:
![](/community/proxy.php?image=http%3A%2F%2Fimg12.imageshack.us%2Fimg12%2F2659%2Fp1040647j.jpg&hash=a41fe90306700862ae1b67dad964e701)
The fans are mounted on each side of the hot air outlet by the FF:
![](/community/proxy.php?image=http%3A%2F%2Fimg339.imageshack.us%2Fimg339%2F701%2Fp1040657c.jpg&hash=e611ddbd1c2640cee3fecbf965eada1f)
Then, the two hoses are joined together:
![](/community/proxy.php?image=http%3A%2F%2Fimg687.imageshack.us%2Fimg687%2F4171%2Fp1040652xq.jpg&hash=43e7a32c997a98adb93f18c713b64f1b)
Then through a couple of bulkheads:
![](/community/proxy.php?image=http%3A%2F%2Fimg266.imageshack.us%2Fimg266%2F9262%2Fp1040656.jpg&hash=4e6bca619686c2215d077dc116cf97ea)
And finally up towards the outlet:
![](/community/proxy.php?image=http%3A%2F%2Fimg832.imageshack.us%2Fimg832%2F3918%2Fp1040649t.jpg&hash=06aaafd24ee2bad0b6b5fc3481e03f3c)
Overhead the outlet, we've made a hole in the glareshield in the same size as the outlet.
The airflow will then clear a hole in front of the pilot (the plane has the right seat as pilot seat) enough for taxing and departure.
PS: wr're in the middle of wiring now, so the "wire-madness" will hopefully be done with soon...