Baffle Mod

[BillL]

- Larry. The minimum depth on the exhaust side is about .500" This makes the gap across 8 fins, to be .25 inches. It does need to continue down lower ( 1.5" or so) then rejoin the fins to force the flow through the fins as they get longer.

The graph was to satisfy myself of the full schedule of area. .2" was all I could fit in on the front head.

Also, considering the engines are made this way, what is the real cooling need on the intake side anyway? Clearly it needs some, but how much is enough? I will find out when flying.

[Bcone1381]

Is there any way to get DanH's photo to show up. They dont show up even using Google Chrom's "photobucket fix."

[DanH]

I suppose you could wait until I get back from S&F.

Photobucket is a dead issue. I may re-link the 1000 or so images, drawings, graphs, etc if we find a more-or-less permanent host.

9-3-18 Photos re-posted

[Bavafa]

Originally Posted by DanH

I suppose you could wait until I get back from S&F.

Photobucket is a dead issue. I may re-link the 1000 or so images, drawings, graphs, etc if we find a more-or-less permanent host.

I have also been searching and have great interest to see them, so when you are back, I would greatly appreciate it sharing them.

Hope you are enjoying Sun&FUN.

[wirejock]

Originally Posted by Bavafa

I have also been searching and have great interest to see them, so when you are back, I would greatly appreciate it sharing them.

Hope you are enjoying Sun&FUN.

+1 here. I would like to see the mods and data. This is such an awesome web site, it's a shame photos are so temporary. I started saving stuff I need to pdf files so I have a reference later. Some of it is linked on my blog. Anything I used is documented in the respective pages.

[BillL]

Originally Posted by wirejock

+1 here. I would like to see the mods and data. This is such an awesome web site, it's a shame photos are so temporary. I started saving stuff I need to pdf files so I have a reference later. Some of it is linked on my blog. Anything I used is documented in the respective pages.

I did the mods to #2 and #3, they and #1 are within a 10F degree band. #4 for me is a different animal. It is +25F. Maybe it is the flashing under the spark plug. I will let you know in a week.

[WingnutWick]

Dan,

Would love the info too!

[laz]

I would also love to see some photos. The loss of photos on this site is problematic.

I am in Phase one with my RV8 and struggling with high CHT's on initial climb. They rise to 400 to 415 on 1 and three. 2 is also getting above 400 as the temps here in Ohio get out of the winter zone. My engine is a o-360 A1A with a carb. I have double checked the timing and tried the "washer trick on 3 and 2. I have 19 hrs on the plane so far. One I am in cruse they all settle down to 380 20 350. I am running high power during break in. 23" to 24" mp.

What is the consensus on how much to cut the Dams vans puts on the stock baffles. I have read that some recommend removing them entirely and finding the right size with aluminum tape.

Any help is appreciated

[rv8ch]

I think if you post some photos or send a link to them, experienced people like Dan will be able to provide suggestions.

[uk_figs]

I got fed up with trying to figure out the right size for dams in trying to balance out my CHT's and finally made them removable so that I could experiment with different sizes etc. Just replaced the rivets with screws and locknuts, but during the build you could put nutplates instead.
Figs