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Old Dec 02, 2012, 02:17 PM
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blade dimensions at the grip

Have a friend who flies 500 and 600 now and gave me a few unused 325mm wood blades. The grip section is waaaay to thick to fit into my grips. I just assumed wood needs to be thicker for strength.

Now I'm shopping for blades and I notice that hobby king is giving the grip sizes - one (fiberglass) is 5mm and comments say you need shims to keep them tight? Still other fiberglass blades have comments that they are too thick for the grips.
Since I don't do any 3D or high G stuff, figuring out which ones to order is no problem - I just need a new battery for my micrometer to measure my grips.

But now I am curious why they vary so much, even in the fiberglass stuff. Fat ones for higher headspeed or maybe strapping on a heavy camera?

And do some of you guys buy special grips to fit the fat ones or the skinny ones?
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Old Dec 02, 2012, 03:58 PM
Complete RC Idiot Savant
The Netherlands
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No idea why there is so much variation in that matter....
I have Spinblades (350 mm) that have blade roots that are a lot thinner than the bladegrips of my Copter-X heads.... And the thing is: I cannot find a rotorhead that has grips that are a direct fit for the Spinblades. Spinblades do not sell their own head as far as I know
It is completely beyond me, why any manufacturer would build blades with "just some" root thickness.

In the .50~.60 size there seems to be a standard of 14 mm, and even that I cannot find any info as to why it should be that measurement....

I just look for shims at the autoshop to get my blades to fit....

Brgds, Bert
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Old Dec 03, 2012, 01:55 AM
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United States, MO, Springfield
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stick brands like Align, Rail, and Edge or Compass
i have not had any issues with blades not fitting in grips on ether of my helis
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Old Dec 03, 2012, 02:03 AM
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I can't justify that kind of money for the kind of flying I do.
I never drive over 70, I see no reason to buy a porsche.
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Old Dec 03, 2012, 07:26 AM
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Align and Compass blades are hardly high end >.>
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Old Dec 03, 2012, 01:15 PM
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http://helidirect.com/align-325mm-32...50-p-10218.hdx

http://helidirect.com/edge-325mm-pre...on-p-18631.hdx

http://helidirect.com/325mm-pro-3d-f...50-p-10348.hdx

For what I do, those $6.30 blades will work just as well as the $40 ones.

I never asked what blades are best, what are most expensive... just why they have a variation in the width of the grip.
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