Three-blade tail (5mm shaft) questions

[TheBum]

I see that JR makes a three-bladed tail rotor for a 5mm shaft. I'm looking to do an aftermarket upgrade of my DT520's tail rotor, which also has a 5mm shaft and this appears to be the best option. I have a few questions:

1. What is the distance from the hub axis to the blade bolt?
2. What is the weight of the rotor head?
3. What are the OD and length of the slider sleeve?
4. What is the OD of the slider?

The answers to question 3 will tell me if I can use the DT520 slider with the JR sleeve. The answer to question 4 will tell me if the JR slider will work with the DT520 control arm if it comes to that.

Thanks.

[trillian]

I can give you the measurements from the 6mm three blade tail (E12) or the 5mm two blade tail on the NEX E8.

I don't know if the sliders or arms are the same.

It does look like the 5mm three blade tail is made to work with the existing slider and arm but with a different sleeve. But this is from a cursory look at a three blade tail on RC Japan, there are probably others here that know for sure.

[TheBum]

That would be a start. Thanks.

[TheBum]

JR Americas finally got a shipment and were kind enough to do the hub center to blade bolt hole center distance measurement for me. It came out to 42mm. The same measurement on my DT520 is 35mm, which means that, at least rotor diameter-wise, this tail rotor should work in my application with 85mm blades; I'm using 92mm blades now.

Now I just have to decide whether it's worth $158 to attempt it.

[trillian]

I'm glad to hear JR were able to give you the measurements. Apologies for not getting back with you on this, I've just had lots of stuff to deal with on a rental property I have and have barely even thought about helicopters the last couple weeks (plus I'm about to get away for a bit to Spain so had to do a few things to prepare for that.)