Outbacknomad
Active Member
- Joined
- Apr 7, 2021
- Messages
- 202
- Reaction score
- 137
- Location
- Sydney
- Country
- Australia
- Dash Cam
- 4 x Garmin 56 plus 100Ah auxiliary battery
Garmin 56 with Noctua 40mm x 10mm 12v fan temporarily cable tied to Garmin camera bracket & wiring is temporary for the test. There is some recorded noise but it is an acceptable level. The fan with the resistor to reduce fan speed to quieten it is basically not audible in the car with other noises, and the car itself is pretty quiet.
The air flow is not a lot but I feel it is enough. One could add a heatsink if there is space on a camera to increase surface area. Mounting the fan a touch further away if one is really fanatical and on a rubber isolator. The recorded fan noise is minimal, so not really an issue.
One just needs to make up more presentable bracket if cable ties are not acceptable out of a piece of aluminium or look for something in the hardware store to modify. A good excuse to get out. Or maybe bend up a piece of wire as a bracket. A bit of grey matter exercise required!
These fans are not cheap, but they are very good. This 40mm fan has been running a few 1000 hours for a different purpose. I have used about a 100 of the larger size Noctua fans, 80, 92 and 120 in computers for more than a decade. A few have been running continuously over this period at a reduced speed with their supplied resistor.
A 40mm fan at a reduced speed will be a lot quieter than a 25mm fan at full speed.
(A linear polarising filter on stepup ring)
(Spare camera)
A 9MB 1 minute file with Noctua 40mm x 10mm fan running. Compressed video but sound left at a high bit rate.
The air flow is not a lot but I feel it is enough. One could add a heatsink if there is space on a camera to increase surface area. Mounting the fan a touch further away if one is really fanatical and on a rubber isolator. The recorded fan noise is minimal, so not really an issue.
One just needs to make up more presentable bracket if cable ties are not acceptable out of a piece of aluminium or look for something in the hardware store to modify. A good excuse to get out. Or maybe bend up a piece of wire as a bracket. A bit of grey matter exercise required!
These fans are not cheap, but they are very good. This 40mm fan has been running a few 1000 hours for a different purpose. I have used about a 100 of the larger size Noctua fans, 80, 92 and 120 in computers for more than a decade. A few have been running continuously over this period at a reduced speed with their supplied resistor.
A 40mm fan at a reduced speed will be a lot quieter than a 25mm fan at full speed.
(A linear polarising filter on stepup ring)
(Spare camera)
A 9MB 1 minute file with Noctua 40mm x 10mm fan running. Compressed video but sound left at a high bit rate.