Kenmore STC Engine Mount Tube Modification??
- Thread starter sflyboy
- Start date
Steve Pierce
BENEFACTOR
Graham, TX
I don't really understand your question. You basically double up the tube from cluster to cluster is how I have done.
What is the sleeve thickness. I have to modify an original mount to rectify a mis-aligned mount built by Kasola years ago. The owner can't find the instructions but has the STC. Seems some rouge FAA inspector said his sleeved engine mount wwasn't legal so he bought one from Kasola. Had to adjust the cowling etc. The airplane never flew right after the new mount. I measured a stock mount and discovered Kasola's jig was screwed up and lowered the engine.
What is the sleeve thickness. I have to modify an original mount to rectify a mis-aligned mount built by Kasola years ago. The owner can't find the instructions but has the STC. Seems some rouge FAA inspector said his sleeved engine mount wwasn't legal so he bought one from Kasola. Had to adjust the cowling etc. The airplane never flew right after the new mount. I measured a stock mount and discovered Kasola's jig was screwed up and lowered the engine.
Steve Pierce
BENEFACTOR
Graham, TX
Thanks Jim. You probably know who this a for.
Steve, yes that is my question. Do you go all the way to the cluster or do you stop 1/2" to 1" short of the cluster? I am assuming the reason for strengthening the tube is because the increased compression load on the tube at landing and the added sleeve is needed to keep the tube from buckling in the center. From an engineering analysis it wouldn't need to go to the cluster but I want to do what ever you guys have done in the past and tested over time.
Thank You
Shane
Thank You
Shane
Steve Pierce
BENEFACTOR
Graham, TX
The tubes need to be coped to fit around the intersecting cluster tubes. If not the inside tube will fail whee you end the sleeve.
Marty57
PATRON
Nipomo, Ca
Steve,
Any pictures of the modification? I have a PA12 engine mount for my 2+2 that needs an upper tube replaced and also the modification would likely be a good idea I think. I'm using an O290D2 so I suspect the modification is necessary since I don't know what engine was on this mount. The two tubes that need to be replaced; at they just the two upper off the firewall? In the attached pictures, I'm holding the tube that needs to be replaced. Thanks.
Marty
Any pictures of the modification? I have a PA12 engine mount for my 2+2 that needs an upper tube replaced and also the modification would likely be a good idea I think. I'm using an O290D2 so I suspect the modification is necessary since I don't know what engine was on this mount. The two tubes that need to be replaced; at they just the two upper off the firewall? In the attached pictures, I'm holding the tube that needs to be replaced. Thanks.
Marty
Attachments
For what it's worth, I sent my mount to Kosala for overhaul and STC mod. It was right at a grand. No problem with the fit upon reinstalling.
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