X4 or X5 canopy on 425

[bjornal]

Does any of the new canopies fit on the 425? Got the possibility to pick up a pair of 425 kits for cheap, thinking about building one and stretching it to a 550 size.

Also, which pinion and motor KV would be best for 550mm blades with the default gearing? Would 1500kv on 14t or 15t pinion be too much?

[sp00fman]

That would be too high, even with a 60T front gear.

You could use it on 425mm blades. I went with 16T pinion, 60T front gear with my 1600Kv motor. Getting 2800rpm easy.

Using the stock 50T front and 13T pinion would have given me a similar result.

[SQRT(-2)]

Don't know about the canopies, but as far as gearing goes, there is a spreadsheet that will figure things for you.

https://www.helifreak.com/showthread.php?t=233407

[Mikej]

You can use a 1300KV motor and gear it down with a 60T front gear and 14 or 15T pinion for 500 / 550mm blades.

I use Turnigy T500 and T550 canopies on my Hurricane

[sp00fman]

How do you use that on your Hurri?....... Throw them upward really hard?

[Mikej]

Originally Posted by sp00fman

How do you use that on your Hurri?....... Throw them upward really hard?

They are both trimmed down a bit so they fit further back than the standard holes (if they came with holes - can't remember ...). And they are held on by the batteries at the bottom - I'll try and post a picture later.