HK401b old vs new

Originally posted by brutus1952 i posted already month ago a warning about this gyro..DONT USE IT DONT BUY IT. it is a waist of money and will proberly crash your heli. spend a little bit more money and buy a good one.

For me it's not really a matter of money. 12 bucks is nothing. I pay more for lunch, actually. It really would have been great if it had performed as good as what has been reported from previous buyers. Fact of the matter is that the new version seems to have some serious issues that are not easilly negotiated or worked around, and atleast my unit performs very poorly -so poorly that it is unusable to me.

I wouldn't go as far to say that it will crash your heli -I have done my first five fights (batteries) ever with this gyro and I did not crash, perhaps thanks to the sim training I had done, but still...

Anyway:
-As a newbie; sudden tail wag, random drifting and what not is not what I want. I need a predictable tail. It does not have to be fast or super exact, just predictible. I'm hoping that the Turnigy MEMS unit will provide that :)

Hello,
I have used an older 2, years, hk 401 b with a hxt900, slow but no drift, wag, and for slow ff, funnels, reverse, just fine.

I bought a digi ds929mg to udgrade.
No way to get wag to stop on all servo horn holes and tested with newer hk 401 b gyro same thing,

BUT

I opened both 401s to refix pc boards in case hoping this would help.

The components are different, many of them, different numbers , volt ratings, just plain different.

So I replaced the older one back with the hxt900 bingo ok!!
To bad they changed, I will not buy another!
David

Has anyone opened up one of the $48 usd Chinese Futaba branded clones which are sold on fleabay to see if they are same as current HK ones - with a higher price?

They are actually called Futaba but made in China. I think real Futaba is made in Taiwan.

It would be interesting to know if they have the metal or black plastic coated sensors.

I have this new version, had a wobble in the tail plus sensitive is said to "polite" it's all over the place!

Originally posted by Sooty Has anyone opened up one of the $48 usd Chinese Futaba branded clones which are sold on fleabay to see if they are same as current HK ones - with a higher price? They are actually called Futaba but made in China. I think real Futaba is made in Taiwan. It would be interesting to know if they have the metal or black plastic coated sensors.

The Futaba 401 that I have purchased at DHgate are a different set up to the HK 401,they have a big nut suspended under the main board.It would appear to be a damper of sorts.I have purchased 15+ so far, they work a lot better than the HK401,easier to set than the Assan GA250.
I have had 2 that bounced around,when opened, the nut that has been hot glued in place had come adrift.I just epoxied the nut back in place.100% fixed and at $18 each the're good value