Motor sizes for Graduator, LOC IV

Motor sizes for Graduator, LOC IV

Post by Roy Gre » Sat, 18 Jan 1997 04:00:00



Quote:

>Just got my Graduator and LOC IV kits today from MSH!

>I ran these puppies on WinRoc, and came up with the following motor sizes:

>Graduator:    E16-4W, G64-7W

>LOC IV:  F40-4W, G64-4W

>Do these sound right? I used the default Cd of 0.75. Do the Aerotech
>delays
>run short or long on these engines?

those selections should be ok.  It'd be nice if there were a 6 second
G64 delay for the LOC IV.  My Phantom 4000 (roughly equivalent) flies
best on G40-4 or G80-7.  a G40-7 lets it fall a bit too long for my
taste.
 
 
 

Motor sizes for Graduator, LOC IV

Post by Barockte » Sat, 18 Jan 1997 04:00:00


Just got my Graduator and LOC IV kits today from MSH!

I ran these puppies on WinRoc, and came up with the following motor sizes:

Graduator:    E16-4W, G64-7W

LOC IV:  F40-4W, G64-4W

Do these sound right? I used the default Cd of 0.75. Do the Aerotech
delays
run short or long on these engines?

TIA

-Barockteer

 
 
 

Motor sizes for Graduator, LOC IV

Post by Alex Merica » Sat, 18 Jan 1997 04:00:00


Quote:

> Just got my Graduator and LOC IV kits today from MSH!

Dang, The LOC IV was out of stock when I ordered, settled for a Forte

Quote:

> I ran these puppies on WinRoc, and came up with the following motor sizes:

> Graduator:    E16-4W, G64-7W

The G64-7 look right.  My log book is at home so this is from memory.  My
Graduator tended toward late ejection.  I considered this a plus since it
cut down on drift somewhat.  I made it a practice of warning the LCO & RSO
to expect a late ejection.  

--


 
 
 

Motor sizes for Graduator, LOC IV

Post by David.A.Davi » Sat, 18 Jan 1997 04:00:00


Quote:


> >Just got my Graduator and LOC IV kits today from MSH!

> >I ran these puppies on WinRoc, and came up with the following motor sizes:

> >Graduator:    E16-4W, G64-7W

> >LOC IV:  F40-4W, G64-4W

> >Do these sound right? I used the default Cd of 0.75. Do the Aerotech
> >delays
> >run short or long on these engines?

> those selections should be ok.  It'd be nice if there were a 6 second
> G64 delay for the LOC IV.  My Phantom 4000 (roughly equivalent) flies
> best on G40-4 or G80-7.  a G40-7 lets it fall a bit too long for my
> taste.

Graduator Motors:  F25-6           LOC IV Motors:  F25-6
                   G40-7                           G40-7
                   F37-S                           F37-S
                   G54-M                           G54-S
                   F40-7                           F40-7
                   G64-7                           G64-7
                   G75-M                           G75-M
                   H97-M                           H97-M
                   H128-M                          H128-M
                   H180-M                          H180-M
 
 
 

Motor sizes for Graduator, LOC IV

Post by Bob Kapl » Wed, 22 Jan 1997 04:00:00


Quote:

> Just got my Graduator and LOC IV kits today from MSH!
> I ran these puppies on WinRoc, and came up with the following motor sizes:

EXACTLY the combination I started with 9 years ago... Except then you had to
get them directly from LOC.

Quote:
> Graduator:    E16-4W, G64-7W
> LOC IV:  F40-4W, G64-4W

> Do these sound right? I used the default Cd of 0.75.

Sounds OK to me.

Quote:
> Do the Aerotech delays
> run short or long on these engines?

Yes! :-(

        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

 
 
 

Motor sizes for Graduator, LOC IV

Post by john.w. lyngd » Wed, 22 Jan 1997 04:00:00


Quote:


>Subject: Motor sizes for Graduator, LOC IV
>Date: 17 Jan 1997 04:27:22 GMT
>Just got my Graduator and LOC IV kits today from MSH!
>I ran these puppies on WinRoc, and came up with the following motor sizes:
>Graduator:    E16-4W, G64-7W
>LOC IV:  F40-4W, G64-4W
>Do these sound right? I used the default Cd of 0.75. Do the Aerotech
>delays
>run short or long on these engines?

I darted my Initiator on a E16-4 powered flight, so I think that the delay for
this motor runs long, but I have no data to support this opinion. NAR specs
the delay at 8 seconds for the G64-7, but I have timed(with a stopwatch) many
G64-7W powered flights and found that the time between leaving the pad and
chute deployment runs 12 to 13 seconds. Subtracting 2 seconds or so for motor
burn time, and you end up with a 10 seconds delay.

        John

Quote:
>TIA
>-Barockteer

 
 
 

Motor sizes for Graduator, LOC IV

Post by Mark Jeghe » Thu, 23 Jan 1997 04:00:00



Quote:

>Just got my Graduator and LOC IV kits today from MSH!

My favorite motors for the Graduator are G80-10 and, if I am
on a large enough lakebed, an H90-10!  Yow!  What a flight!
 
 
 

Motor sizes for Graduator, LOC IV

Post by Jason War » Thu, 23 Jan 1997 04:00:00


Quote:


> > LOC IV:  F40-4W, G64-4W

> > Do these sound right? I used the default Cd of 0.75.

> Sounds OK to me.

> > Do the Aerotech delays
> > run short or long on these engines?

> Yes! :-(

I have a LOC IV that bit the dust a couple of months ago becaue of a
long (very long) 4 second delay. The rocket was balistic on the way
down and seperated the shock cord. I rebuilt the rocket by cutting
off the top of the tube and, using a coupler, adding back the top of
the tube.

I launched it again this weekend with a G64-4W of the same date code
as the one from before. Guess what....several people counted 7 seconds.
This time the rocket survived because I had beefed up the recovery
system,
but it damn near hit the ground before the cute opened.

I then bought a new G64-4W at the launch site. This one ran about 5
seconds.
Long, but better. I would not try this rocket on anything less than a
G64,
and go for the 4 second, not the 7 second delay

--
-Jason Ware

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