Friday, September 28 - Patch...First Impressions

[ATAG_Snapper]

Originally Posted by MadTommy

I just tried this and was getting some really odd things happening.

Climbing at 7lb boost, 2,850rpm, IAS ~155, rad half open.

Temp gauges all within limits when at 17,000ft my rpm started fluctuating wildly, causing cockpit shake. I was unable to control my rpm.

oil = 85, water = 100.

Changing fuel mixture did not help.

I don't know what was going on.

Only way i could stop the shaking was sub 2,100 rpm & sub 4 lb boost.. managed to get to 19,000ft but could not maintain a climb..

+1

Very similar initial results for 2a at 9 lbs/2850 rpms/50% rad -- opened to 100% as oil reached 97/glycol 120, speed 185 mph IAS. Reached 19,600 with fluctuating rpms & boost -- could not climb above 20K: aborted climb. Engine undamaged - flew normally at lower alt.

Sea level run: 270 IAS 9 lbs/3000/35% rad
280 IAS 11 lbs/3000/35% rad

Doing a quick test of 1a 100 pctane