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View Full Version : New Shock Absorbing Gear Design for Grove Gears



Rodney
01-22-2019, 04:44 PM
Just found this a few minutes ago on the internet.

https://www.youtube.com/watch?v=KHrFRxqZSjM

Thought some of you might also be interested in this design.
As you will see, it's new and still in the testing phase.

Really hope it works out and is affordable.

Regards
Rodney

Hockeystud87
01-22-2019, 04:55 PM
Interesting. 16lbs heavier but still a neat concept.

efwd
01-22-2019, 04:59 PM
I saw this yesterday as well. Following closely. Very interesting how he came to this design.

Esser
01-22-2019, 06:41 PM
I’ve been talking with Alex about this since HSF. I’m interested but with my forward c of g issues, 16# is too heavy.

Rodney
01-22-2019, 08:53 PM
Esser - did you get to see the system at HSF???

If it installs like I think, true it will weigh 16lbs, but the moment will only be 1.5 inches - so not too much of an effect on CG.

I'm kinda excited to see how this works out. I really like the idea of keeping the Grove gear and being able to add suspension capability to it.

Rodney

Esser
01-22-2019, 10:25 PM
No just computer models etc. I should have said too that my plane is heavier than I want it. I would rather have bush gear for the same weight I have now with my extended gear than 16 extra pounds. I'm already trying to shed weight as it it.

bbs428
01-23-2019, 10:19 AM
Agreed. I saw the video too. Very promising!

GuppyWN
01-23-2019, 12:43 PM
No just computer models etc. I should have said too that my plane is heavier than I want it...

Is there a particular reason you need or want the extended gear? Seems the standard gear is fine and with even 22”s will handle a 75” prop.

Esser
01-23-2019, 01:34 PM
AOA on take off and landing. In Idaho I would always hit tail first by a large margins.

cirrusjetpilot
03-12-2019, 05:55 PM
Figure you guys like an update about the gear. Sorry I completely missed this thread. Need to come here more often.

I have around 30 hours on it. Been flying on all types of terrain. Last weekend I changed the shock PSI from 190lbs down to 175lbs. It seems to be flexing a lot more. I want to fly some more hours and adjust again if needed. Overall I am super happy with the design. It works as intended. It can be made a lot lighter. It is super hefty as a first design try. I am pretty sure the overall weight per side can be reduced by 1/2 without compromising its strength.

Here's a video where I do some more testing with it.
https://youtu.be/HZwOil7qibg

Cheers
Alex Di Sessa

TJay
03-14-2019, 03:39 PM
I don't understand why you keep the grove gear on there. Your installing a shock absorbing landing gear on a spring. Something that may help an X brace on the grove gear with some flying wire or something to stop the bounce effect. Just a thought.