engine shake

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hydroguy2
Class B
Posts: 1307
Joined: Mon Sep 10, 2007 11:13 pm
Location: Townsend, Montana

engine shake

Post by hydroguy2 »

When I cut the power,as the rpm drops thru 1100-1000 I get a pretty good engine shake. I can feel it and actually see the spinner moving 1/4" or more.

Anyone else?

Also today on my 1st landing my engine quit as I rolled out, I think my idle is set to low. And my landings sucked today. I seemed to be flaring to high and dropping it in and bouncing. The Temp got up to +12*F on the ground(was -18 this a.m.),but was 0*F at 7500'

BUT there is good news: I got up for 1.1hrs, checked my airspeed vs GPS and they are within 1kt at 160kts cruise. I think I'll do some more practice tomorrow.
Brian
Townsend, MT

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cjensen
Whiskey Victor
Posts: 5275
Joined: Sat Apr 23, 2005 10:36 pm
Location: Green Bay, WI

Post by cjensen »

Engine shake is totally normal for a Lyc. Shakes like a wet dog! Especially with lightweight propellers. The Hartzell, and to some extent, the Sensi's keep the shaking at a less noticeable frequency. Mine shakes too...

Glad you're getting to fly! I'm staring at a month without flying this coming weekend!!! Getting cleared out from the blizzard that rolled thru here yesterday and last night.
Chad Jensen
Missing my RV-7...
Vertical Power support
920.216.3699
http://verticalpower.com

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hydroguy2
Class B
Posts: 1307
Joined: Mon Sep 10, 2007 11:13 pm
Location: Townsend, Montana

Post by hydroguy2 »

Great day here in the Big Sky. launched around noon after the temperature got +8*F. Flew to Three Forks (9S5) to visit a friend who owns Headwaters Flying Service. He is having a prop balancer guy come in soon to balance our props.
Image

Got a call earlier today to meet up with a Hans (RV-6A, flying) in Bozeman(KBZN). So headed over there. Made my best landing yet...thank you very much.
Image

Hans wasn't there yet, but met his hangarmate. Alan E. was building this RV-8A, Hopes to do an engine start in March and fly it this summer. Doing good work and the thing is loaded. IO-360 from Aerosport, WW200RV prop, Full IFR panel, inverted systems Image
Hans' -6A in the back
Image

Also met up with some other Bozeman pilots who own F-86, F-100, BT-13, T-6, T-28 and other cool stuff. The Saber is outside so, I'll taxi over near them next time I'm down there for a photo op. Aurora held her own and was a sparkling beauty in the clear air, Everybody was impressed.

Yep great day to be alive! 15.6hrs of pure fun on the HOBBS
Brian
Townsend, MT

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svanarts
Air Marshall
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Joined: Wed Oct 27, 2004 5:19 pm
Location: Modesto, CA
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Post by svanarts »

I had the same problem on the RV-4. I installed a Landoll harmonic balancer and that seemed to cure it.
Scott VanArtsdalen
Token Heretic
Nirvana Rodeo / Dudek Universal
S-6ES N612SV - GONE but not forgotten
RV-4 N311SV - SOLD

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