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Dave Nadler June 11th 18 10:37 PM

Electric Self Launch System
 
On Monday, June 11, 2018 at 2:55:08 PM UTC-6, wrote:
System provided to me by MGM Compro uses Sony US18650VTC6.
Rated capacity 3000mAh. 18 stacks of 28. 57 lb with enclosure and BMS.
Projected performance at 25KW draw is 12 minutes.


Thanks Hank - Do they provide any specs (feature list) for BMS?

[email protected] June 12th 18 12:07 AM

Electric Self Launch System
 
On Monday, June 11, 2018 at 5:37:08 PM UTC-4, Dave Nadler wrote:
On Monday, June 11, 2018 at 2:55:08 PM UTC-6, wrote:
System provided to me by MGM Compro uses Sony US18650VTC6.
Rated capacity 3000mAh. 18 stacks of 28. 57 lb with enclosure and BMS.
Projected performance at 25KW draw is 12 minutes.


Thanks Hank - Do they provide any specs (feature list) for BMS?


Yep- there is a manual for it. Sent privately.
UH

Dave Nadler June 12th 18 12:59 AM

Electric Self Launch System
 
On Monday, June 11, 2018 at 5:07:23 PM UTC-6, wrote:
On Monday, June 11, 2018 at 5:37:08 PM UTC-4, Dave Nadler wrote:
Thanks Hank - Do they provide any specs (feature list) for BMS?


Yep- there is a manual for it. Sent privately.
UH


Thanks Hank!

Emir Sherbi October 24th 18 04:12 PM

Electric Self Launch System
 
More updates:


https://www.instagram.com/grasshoppersystem/
https://www.facebook.com/charlysierragolf/


[email protected] October 25th 18 02:48 PM

Electric Self Launch System
 
I suppose you will provide strong protection to the elevator linkage. If anything goes wrong in the pylon mountings, or parts get loose, you really don't want to risk interference with the elevator control.
The static and TE lines would also very much benefit from protection.

I admire all those who dare such complex work

Aldo Cernezzi
www.voloavela.it

Emir Sherbi October 26th 18 03:50 AM

Electric Self Launch System
 
Aldo,

There will be a very thick floor and sidewalls to reinforce the fuselage structure and that will protect the control rod and cables.
If anything get loose it will stay in the motor bay.

Regards

Craig Funston[_3_] October 26th 18 04:51 AM

Electric Self Launch System
 
Emir, great to see you moving forward on your project.

I expect you already know this, but at the risk of being redundant, I’ll post anyways. Just thickening the skins in the motor bay area won’t restore the torsional stiffness of the boom. When the hole is cut for the doors the boom goes from a closed tube shape to an open “C” shape. This dramatically reduces the torsional stiffness and strength of that area. You can demonstrate it to yourself with a cardboard tube..

The factories get around this by adding a pair of vertical walls in the engine bay to form two closed “D” shaped tubes, essentially restoring the lost stiffness.

Good luck with your project. I’m looking forward to hearing how it works out.

Best regards,
Craig

Senna Van den Bosch October 26th 18 07:52 AM

Electric Self Launch System
 
Op vrijdag 26 oktober 2018 04:50:09 UTC+2 schreef Emir Sherbi:
Aldo,

There will be a very thick floor and sidewalls to reinforce the fuselage structure and that will protect the control rod and cables.
If anything get loose it will stay in the motor bay.

Regards


This project looks amazing. Do you have any idea of a price that you would like to get for selling such a kit? Also, with any kind of fittings, is there any probability of them getting loose?

Emir Sherbi October 26th 18 01:34 PM

Electric Self Launch System
 
Craig,

Thanks for the advice. That is the big issue on the project. Is difficult to obtain the same rigidity of a cone like the boom tail once cut. The reinforcement floor and walls will form 3 different enclosed sections with fibers at 45° from the fuselage line.

After the modifications I will test the fuselage with strain gauges to see the new strain distribution and compare them with the original.

Emir Sherbi October 26th 18 02:05 PM

Electric Self Launch System
 

This project looks amazing. Do you have any idea of a price that you would like to get for selling such a kit? Also, with any kind of fittings, is there any probability of them getting loose?


The price of the kit will be around 17.000 USD depending on controller and battery capacity choices without installation.
Now that i left my full time job to continue with this project i can travel to make the modifications by myself.

The fastening part of the fittings will be at plain sight. So if you check out them time to time there must be no problems.


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