New Rotax 670 Install

[Alaskaflyer 18]

I don't understand why anybody would weld this bolt in. If it is a known rust prone area the bolt should be removed periodically and greased up. Also, an inspection ring should be installed to clean it out on occasion. My Avid has a small uncovered area underneath and right in front of the U channel to get a wrench on the top of the bolt. 

[Allen Sutphin 705]

Because most only plan to build once and are not too concerned about replacement or just don't think ahead. Repeat offenders, oops, I mean repeat builders know the little tips and tricks of the game. 

[TJay 1041]

You weld it or glue it in so when you change springs in the field because they break first you don't need to take off the horizontal stabilizer to get your arm in there and try to hold a bolt.  lets be honest the only time that bolt will ever have to be replaces is when you re fabric every 30 years. And your right a simple inspection cover would solve all the issues but you also have to look at them.

Edited 4 Jan 2023 by TJay

[Alaskaflyer 18]

Hi TJ, Your right, that bolt will probably last for many years. The big issue for me was the rust that was happening there. This Avid will be on floats here in Southeast Alaska. Landing in the ocean.  I'm sure that area will be subjected to Salt water dousing on a regular basis. I need to be able to inspect that area every year at Annual. 

[TJay 1041]

I bet an Avid on floats will be a blast too. Are you allow you to land on the small water reservoirs in the mountains? I always thought that would be fun.

 

[TJay 1041]

I bet an Avid on floats will be a blast too. Are you allow you to land on the small water reservoirs in the mountains? I always thought that would be fun.

 

[Alaskaflyer 18]

In Alaska we still have more freedom than the lower 48 states. I can land most anywhere I want to. 

 

[sioux201 84]

TJay

You betcha

[sioux201 84]

TJay

You betcha

[Alaskaflyer 18]

It's been a while since I posted the Avid progress. The Randy Moore gear legs are installed and look awesome! The Desser 27.5x10x8 tires are just huge and look very aggressive! I fabricated another clamp for the dual tailwheel springs. They were 1 1/4 wide so I had to fit a u shaped spacer. I may have to adjust the bend in the springs for a proper angle for the tailwheel. I noticed the the holes on the bottom of the rudder horn are  elongated from the tailwheel springs. Something else to fix! I still need to finish the brake lines and bleed the system. I will be using silicone brake fluid as it is available here at NAPA. The engine installation is all but done. Just waiting on some more fire sleeve and final look over.

 

 

[ChrisBolkan 130]

I think you are going to love the 27 inch Dessers. I have the 22 850s and they are amazing. SO much softer, smoother and lighter that the standard 850 ribbed. Not even close! And they are holding up incredibly well! The price is right too.

[wypaul 448]

Is that fluid going to be compatible with your brake seals?  Your local FBO will have the right stuff.

[Alaskaflyer 18]

Here is a couple of pics of the engine. 

[Alaskaflyer 18]

Silicone brake fluid is approved by Matco for their brakes. It's also cheaper than the Mil Spec stuff.

[nlappos 413]

Silicone brake fluid is approved by Matco for their brakes. It's also cheaper than the Mil Spec stuff.

Great point. Also, 5606 is really kerosene, highly flammable. Silicone is not flammable.

[wypaul 448]

Good to know,