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n3tjm
24th May 2009, 06:14 PM
My EZI-65 with one of my G54 Sparky motors. (similar to my G53 but with a little more propellant).

http://www.youtube.com/watch?v=a3eHJ4RUVb8
jj94
24th May 2009, 08:07 PM
Nice. If I remember, you said that you make these from scraps that AMW gave you, right?
n3tjm
24th May 2009, 10:06 PM
That is correct. =)
ben_ullman
24th May 2009, 11:00 PM
Do you just use 1/2 grains like loki or the I grains? I have some AMW38mm laying around I might mess with.

Ben
AKPilot
25th May 2009, 02:15 AM
Nice! Who sells the G54 btw? Looks as if it'd be a good park flyer.
ben_ullman
25th May 2009, 02:17 AM
Nice! Who sells the G54 btw? Looks as if it'd be a good park flyer.

Its an "EX" load so maybe this thread should be deleted :bangbang: :rolleyes:

Ben
n3tjm
25th May 2009, 02:57 AM
Do you just use 1/2 grains like loki or the I grains? I have some AMW38mm laying around I might mess with.

Ben

Yes. The G54 design uses a standard AMW 38mm Skidmark grain cut in half. Custom made nozzle with a 3/16" core.
n3tjm
25th May 2009, 02:59 AM
Nice! Who sells the G54 btw? Looks as if it'd be a good park flyer.

Not sold. Closest thing that is sold is the PRO38 G Skid and the new 29mm G skids. I do believe the formula is different with the Pro series but I am not 100% positive on that. I think the classic AMW 38mm skids have more sparks :p

I designed this motor as a park flier, and flown it many times. Few times near Albany, NY, couple times in my Parents front yard, and several times at the school I fly at with the scouts. The motor was even used by AMW to do some tests but I don;t think I am at liberty to talk about that :P
Rocketjunkie
25th May 2009, 03:21 AM
Here's a rocket on a Pro38 G69 skid: http://www.tripolisc.org/modules/xoopsgallery/cache/albums/albun86/Jon_Chrisman_s_Matrix_on_sparky_G.wmv
cjl
25th May 2009, 03:26 AM
Not sold. Closest thing that is sold is the PRO38 G Skid and the new 29mm G skids. I do believe the formula is different with the Pro series but I am not 100% positive on that. I think the classic AMW 38mm skids have more sparks :p

I designed this motor as a park flier, and flown it many times. Few times near Albany, NY, couple times in my Parents front yard, and several times at the school I fly at with the scouts. The motor was even used by AMW to do some tests but I don;t think I am at liberty to talk about that :P

Having just got back from a launch with many small CTI skids, I can tell you that they actually have significantly more grunt and noise than the AMW skids did in the same size. The I315 was less spectacular than many of the H loads that were flown. CTI has done skids properly. I don't think the sparks last as long, but there are plenty of them, and lots of noise.

I also saw some Pro54 J skids - they are excellent loads. I may need to get some CTI cases now.
jj94
25th May 2009, 04:27 AM
Seems like the Cesaroni skids are faster than the AMW ones. Is it just me?
MarkII
25th May 2009, 04:37 AM
Way to go, Sparky...err...Doug! :o

Is it my imagination (or an optical illusion) or did your EZI-65 get just a touch squirrely right after it cleared the rod (or rail - couldn't tell in the dark)?

MarkII
cjl
25th May 2009, 07:58 AM
Seems like the Cesaroni skids are faster than the AMW ones. Is it just me?

I think they're about the same speed, but with a higher Isp. I know the 54-6XL load is a K990 or something like that, which would fit that assumption (since the old equivalent was a K1000).
n3tjm
25th May 2009, 02:57 PM
Way to go, Sparky...err...Doug! :o

Is it my imagination (or an optical illusion) or did your EZI-65 get just a touch squirrely right after it cleared the rod (or rail - couldn't tell in the dark)?

MarkII

Yes it did. I think it was caused by the lower launch lug binding with the launch rod when the top cleared the rod.