Well gosh I thought the strap went from blade bolt to blade bolt or grip to grip. I didn’t know the yolk handled all the centrifugal loads. I guess I never looked at a diagram.
Great explanation and video. I had no idea that blades were held on like this! Obviously it’s due to vibration and other forces but is there a reason a solid bar isn’t incorporated to act as a failsafe? I just saw the 212 report and am a new OH-58 owner. My previous experience was on an AS350 and I wasn’t aware of this design feature. This video was really helpful. Thanks!
Thanks for a really clear explanation. Sadly, looked here to find out about TT straps following the GSH accident at Fort Good Hope NWT.
I worked on MD 500s. I never really got into the bell design. I learned something new today.
I spent years working on the 500 series. Still my favourite helicopter.
Great info! I never knew these take up the entire centrifugal blade load. How much would such a piece cost and what is their lifespan? Thanks.
Two years or 1200 hrs of flight time they’re about 4K usd for the 206. Not sure about the other two.
Well gosh I thought the strap went from blade bolt to blade bolt or grip to grip. I didn’t know the yolk handled all the centrifugal loads. I guess I never looked at a diagram.
Great explanation and video. I had no idea that blades were held on like this! Obviously it’s due to vibration and other forces but is there a reason a solid bar isn’t incorporated to act as a failsafe? I just saw the 212 report and am a new OH-58 owner. My previous experience was on an AS350 and I wasn’t aware of this design feature. This video was really helpful. Thanks!
What study did u do
Those were some ugly safety wire jobs shown at the end of the video.
These rotorheads are put together by students they never fly… definitely lost marks for that lock wire.