FOP38 80mm test, can anyone help?

[RedRooster]

Alright, I've seen this method around a fair bit, and would really like to give it a shot but I have some concerns. Firstly, here's what's done:
-Screw an 80mm fan to a 80mm grill
-Clip the grill onto the heatsink using the clips supplied with the FOP38

My questions for anyone who has tried it are:
1) Would/does this not create any sort of vibrations between the grill and the heatsink?? I know the little clips don't torque on the 60mm Delta alot, so I don't know if they'd really get a good hold on the grill. I suppose a thin elastic band might subdue the noise.
2) With a higher output 80mm fan, say a 42cfm Sunon, would/are the temps be at least close to what the Delta could do? I would assume they might be a tad lower due to the increase in output, but maybe the shape of the sink wouldn't allow perfect airflow?? I dunno.
3) Would this method work a little worse than an adapter, since the fan is so much closer to the heatsink and might not work as well?


I'm just exploring my options right now, as I'd have to order a grill and better fan. I have an 80mm fan elastic banded onto the FOP38, and other than the risk of the bands breaking while I'm not there, it's actually working very well. I'd just like something a little more secure and tight. Perhaps even a 120mm fan on a grill could work, if the grill had the proper clip points.

Anyone with a grill and fan kicking around wanna give this a shot and throw up some numbers?

 

[ericd]

I have not tried this but I wouldn't suggest it for multiple reasons.

1. I could be wrong but I think you would have problems with vibrations...let alone increased risk of the fan falling off.

2. NO I don't think they would match the Delta...the reason for this is the fact that the fan hub (the part in the center that all the fins attach to) on an 80mm fan is about 30mm acrossed. This means that there would be a deadspot in your airflow that large. Yes a 60mm fan has this problem to but the fan hub is much smaller therefor the deadspot is smaller.

3. No this would not work as well as an adapter for about the same reason as I mentioned above. Except this time the reason is because the adapter acts as a funnel and therefor eliminates the deadspot altogether. This means that an adapter should actually be the most efficient method possible.

Eric