I flew 206 on both Wip 4000 straight floats, which are indeed massive, and Wip 3450 amphibs....a MUCH better float.

Years ago, I also flew a 206 amphib on Wip 3730s, which were brand new at the time. Never liked those floats....had a couple of gear in transit landings on runway. After a while when I called tower inbound, they’d respond “Roger that, we’ll roll the green trucks for ya.”.

Wip improved that gear system shortly.

In any case, the newer 3450 float is the best I flew.

MTV

I posted about my success with the Horsham cowl flap mod earlier this year. In addition to higher fuel flow, and a rebuild of my highly wrinkled MT prop, this solved my problem. Now 350F rather than 400+F climbing on a warm day.

https://backcountrypilot.org/forum/hors ... -b-r-24266

Pierre

mtv wrote:In any case, the newer 3450 float is the best I flew.
MTV

If I could only afford a couple of those, or even better, Aerocets...

Smith wrote: Also climb at a high airspeed, at least a 100. If it's really hot at 110 or more. I would guess that it's mostly your climb speed and then perhaps your high end fuel pressures are set too low.

Thanks for the info. For sure I'll be over my A&P when the fuel calibration procedure takes place. Chile is very mountainous. Where I live I have to takeoff from 2100' asl and rapidly climb to 4500' to take vfr corridors between C airspace, hence why I was expecting to climb at 91 per manual figures. Will try 100 kt or more, hope it climbs!. What GPH and power settings you use for climb?. Once I go south to the lakes region I'm able to let it climb freely. I'm almost getting to redline on Oil Temp too.

Pierre_R wrote:I posted about my success with the Horsham cowl flap mod earlier this year. In addition to higher fuel flow, and a rebuild of my highly wrinkled MT prop, this solved my problem. Now 350F rather than 400+F climbing on a warm day.
Pierre

That's great Pierre!. Glad you made it. I am contacting Horsham to check if they are interested in developing something similar for the 206. Aussies know about heat for sure. Can you recall how much ºF each correction made individually? Cowl Flaps, Prop and Fuel.

I did not do any individual technical assessment. This spring I installed the Horsham mod while the prop was off for rebuild. No change to fuel flow.

Getting rid of the wrinkle deformities on the MT prop restored its performance, particularly getting off the water and climbing. So that contributed to lower CHT's indirectly by allowing faster climb with a lower deck angle. Otherwise I'd say 80-90% of the roughly 40-50 degree reduction in CHT was due to replacing the cowl flaps.

Pierre