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  #11  
Old 03-10-2018, 08:56 PM
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Crap. I have several small field school demo models I built and sized specifically for the C11-3.
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  #12  
Old 03-10-2018, 09:44 PM
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Let's hope the C11-0 does not disappear.
That is the ONLY decent C sized booster motor.
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  #13  
Old 03-11-2018, 07:12 PM
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Unhappy C11s are gone ?

The C11s were my favorite motor to use. The KNO3 (Potassium Nitrate) Estes has been using is so impure that rocket motors of 25 years ago seem to have double the lift capacity because of the pure KNO3 they used.

Today's A8s are so weak they need to be MESS surveyed after every use. Based on visual observations from old timers, the C6 lack the power of their 1970s counterparts. C11 solved this. New I may switch to AT C14x to fly some of my rockets.
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  #14  
Old 03-12-2018, 06:23 PM
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I checked Belleville. They are sold out of C11-3 2-packs and bulk packs (24). I checked a number of their motor bulk packs, and all are more $ per motor than the regular packs of motors ... not so desirable unless it is a discontinued motor and you just want what they have.
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  #15  
Old 03-12-2018, 09:46 PM
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Default What is Estes recommending for a replacement?

Quote:
Originally Posted by mojo1986
The E9 was a great motor for their mid-size V-2 (don't recall the kit #). All that was needed was to build the engine mount for a 3.75" engine rather than 2.75". Realistic liftoffs and high flights. I'm really gonna miss that engine!


Estes is usually pretty good about opening a window when they close a door. Have they not identified something to use instead of C11s? Maybe even some low, mid, and higher power options?

I hate to think that my V-2 will never fly again....
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  #16  
Old 03-13-2018, 12:48 AM
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Quote:
Originally Posted by olDave
Estes is usually pretty good about opening a window when they close a door. Have they not identified something to use instead of C11s? Maybe even some low, mid, and higher power options?

I hate to think that my V-2 will never fly again....


The current V-2 kit is for both D and E motors. They come with a spacer you slide into the motor tube to allow the use of a D12. But the E-12 motors are fine in place of an E9 (I think better). Other options would be using composite motors like the Aerotech E15, or the E11, E18, or F12 in the 24/40 RMS reloadable hardware.
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Last edited by LeeR : 03-13-2018 at 01:25 AM.
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  #17  
Old 03-13-2018, 07:40 AM
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Unhappy

Quote:
Originally Posted by LeeR
I checked Belleville. They are sold out of C11-3 2-packs and bulk packs (24). I checked a number of their motor bulk packs, and all are more $ per motor than the regular packs of motors ... not so desirable unless it is a discontinued motor and you just want what they have.


There are a variety of vendors besides Belleville with C11 stocks at prices that are reasonable. There are even the older 3 packs that can be found that are still below the retail price per motor.

I have a few Mercury Redstones kits that I will be shortening so that the C6-3 will actually get them off the ground. I had planned on using C11s to compensate for the low C6 thrust. This is one example of a kit that worked well 25 years ago with a "real" C6-3 motor. Today's C6s are a marginal thrust device.
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  #18  
Old 03-13-2018, 08:43 AM
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Using Aerotech 18mm D engines solves the problem of the perpetually weakening C6-3.
If Estes would bring back the ported C5-3 this would not be an issue.
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When in doubt, WHACK the GAS and NEVER touch the brake !!!
No Harm=NO Foul advocate

If you are NOT FLYING LOW in the left lane, you need to GET THE #$&@ OUT of it !

Yes, there is such a thing as NORMAL
, if you have to ask, you probably aren't
!
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  #19  
Old 03-13-2018, 11:32 AM
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Quote:
Originally Posted by Astrosaint
There are a variety of vendors besides Belleville with C11 stocks at prices that are reasonable. There are even the older 3 packs that can be found that are still below the retail price per motor.


If you or anyone on YORF have ordered from other vendors and have had a good experience, Iíd like to know. Iím suspicious of some that claim to have stock, but their Ts & Cs say they may not have actually have them in stock, or may use other suppliers to fulfill an order.

Iím not saying there arenít some, I just tend to deal with the hobby vendors that I know, and that have been around awhile, like AC Supply, Belleville, Hobbylinc, Sirius Rocketry, eRockets, jonrocket.com, etc.
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Last edited by LeeR : 03-13-2018 at 08:45 PM.
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  #20  
Old 03-13-2018, 04:48 PM
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Quote:
Originally Posted by LeeR
If you or anyone on YORF have ordered from other vendors and have had a good experience, Iíd like to know. Iím suspicious of some that claim to have stock, but their Ts & Ace say they may not have actually have them in stock, or may use other suppliers to fulfill an order.

Iím not saying there arenít some, I just tend to deal with the hobby vendors that I know, and that have been around awhile, like AC Supply, Belleville, Hobbylinc, Sirius Rocketry, eRockets, jonrocket.com, etc.


I have tried Superior Hobbies and they have come through every time I use them. They often keep obscure motors like A8-0s
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