Well as I said in the last post I had some bad things happen. This was major as the fan departed company from the craft. The pics show the resulting damage which was thankfully not a great deal. The fan guard did its job and took the brunt of the damage. The rubber wellnuts pulled away from the duct and I have since added brackets around the side of the duct to strengthen that up. This incedent shows what can happen and I am thankful there was no personal injuries as my wife was close by with the camera. Why did it happen I can hear you ask ? No 1 I did not key the fan boss onto the shaft. The marks left on the shaft show the fan screwed itself of in 10 revolutions when I gave it full power. The fan boss was attached to the shaft with a standard taperlock system. Their specs give a torque setting for the grubscrews with or without a keyway. No 2 There was no physical safe stop to protect the fan from coming off. I am angry with myself for not following my gut feel and not put on that safety stopper. Obviously the fan was a write off which was a costly mistake. It took a while to get my confidence back and I am still wary. Please be 100 percent sure with you transmission set up and if you have doubts check with someone with experience in these matters. On a brighter note the craft is up and running but more on that in the next post.
Like this:
Like Loading...
Well as I said in the last post I had some bad things happen. This was major as the fan departed company from the craft. The pics show the resulting damage which was thankfully not a great deal. The fan guard did its job and took the brunt of the damage. The rubber wellnuts pulled away from the duct and I have since added brackets around the side of the duct to strengthen that up. This incedent shows what can happen and I am thankful there was no personal injuries as my wife was close by with the camera. Why did it happen I can hear you ask ? No 1 I did not key the fan boss onto the shaft. The marks left on the shaft show the fan screwed itself of in 10 revolutions when I gave it full power. The fan boss was attached to the shaft with a standard taperlock system. Their specs give a torque setting for the grubscrews with or without a keyway. No 2 There was no physical safe stop to protect the fan from coming off. I am angry with myself for not following my gut feel and not put on that safety stopper. Obviously the fan was a write off which was a costly mistake. It took a while to get my confidence back and I am still wary. Please be 100 percent sure with you transmission set up and if you have doubts check with someone with experience in these matters. On a brighter note the craft is up and running but more on that in the next post.
Share this:
Like this:
Trevor Barrett