Crossload Question

[Theory]

Can a CTI L910 be loaded into an Aerotech 75-2560 case? If so, do I need any additional pieces?

I know there is a good list of AT motors that can be used in CTI cases, and even a video on how to do it with a 3 grain L, just don't see much on going in the other direction.

thanks : - ))

 

[Worsaer]

Just to be clear, are you asking what is certified, or what may work under research rules?

CTI explains it well here:
http://pro38.com/faqs.php

 

[Cesaroni Technology]

Here's a list of what's been certified.

http://pro38.com/faqs.php#compatibility

 

[Theory]

@Cesaroni Technology - Thank you!

looking for what will work. doesn't need to be certified as I can fly under TRA research rules

 

[cerving]

That CTI document is old... most 75/98mm AT loads are certified in CTI hardware, and have been for some time (it says that AT hasn't certified any crossloads). I'm guessing that if an AT -ST will crossload into a CTI case, then a C-Star would work in an AT case. The AT crossload matrix doesn't have any -ST loads, though, so it's a bit of a crapshoot... since you're doing EX anyway, there's only one way to know for sure... give it a try, and hope it doesn't destroy your hardware and/or rocket.

 

[Theory]

give it a try, and hope it doesn't destroy your hardware and/or rocket.

absolutely looking for more than that

believe this could go together like a standard AT load, seal disk and all, just want to be sure it actually fits. sounds like it would as other 2 grain 75mm loads work. would assume they all use the same liner and a similar configuration.

 

[tfish]

CTI and AT 75mm reloads and cases are the same internal dimensions.
Each uses a different approach in how the orings work.
Each reload and case may be a different length.
Each of the above can be over come knowing how each one works, how to properly alter grain geometry and a good understanding of HPR design and principles.

The above would make this a Resesrch motor. To be flown by a TRA L2 flier at a TRA event.

Tony

 

[Steve Shannon]

Each of the above can be over come knowing how each one works, how to properly alter grain geometry and a good understanding of HPR design and principles.

This ^^^!!!

Another way to look at this is: if you have to ask, you might not have enough background knowledge.
But, in working through the problem you’ll gain knowledge for future research activities.

 

[Theory]

oy vey...

 

[jd2cylman]

If loading CTI 75mm loads in AT hardware, always use the AT forward seal disc with an oring. I’ve had 100% success loading cases on this manner.
FWIW, I’ve had to leave out some spacer orings to get the seal disc to fit. Motors always performed nominally.
YMMV.

 

[mtnmanak]

A more interesting question for me is: if I own a complete set of Aerotech hardware, which CTI cases would I need to buy in order to use all the 38mm, 54mm, 75mm and 98mm reloads from both companies?

It looks like I would need:
CTI 38mm - full set
CTI 54mm - full set
CTI 75mm - 6GXL
CTI 98mm - 6GXL ( I am not planning to use any 1G loads)

Are there any 75mm 2G/3G/4G/5G/6G or 98mm 2G/3G/4G/5G/6G CTI reloads that do not fit in Aerotech hardware that would necessitate purchasing CTI hardware in those sizes?

 

[jmasterj]

What about that M3700WT or something like that that needs a short spacer that's specific to that load? Can you use that in the 75 6XL case with the right spacer set?

 

[WILDMANRS]

A more interesting question for me is: if I own a complete set of Aerotech hardware, which CTI cases would I need to buy in order to use all the 38mm, 54mm, 75mm and 98mm reloads from both companies?

It looks like I would need:
CTI 38mm - full set
CTI 54mm - full set
CTI 75mm - 6GXL
CTI 98mm - 6GXL ( I am not planning to use any 1G loads)

Are there any 75mm 2G/3G/4G/5G/6G or 98mm 2G/3G/4G/5G/6G CTI reloads that do not fit in Aerotech hardware that would necessitate purchasing CTI hardware in those sizes?

Correct except the m3700

 

[tjsnakez]

A more interesting question for me is: if I own a complete set of Aerotech hardware, which CTI cases would I need to buy in order to use all the 38mm, 54mm, 75mm and 98mm reloads from both companies?

It looks like I would need:
CTI 38mm - full set
CTI 54mm - full set
CTI 75mm - 6GXL
CTI 98mm - 6GXL ( I am not planning to use any 1G loads)

Are there any 75mm 2G/3G/4G/5G/6G or 98mm 2G/3G/4G/5G/6G CTI reloads that do not fit in Aerotech hardware that would necessitate purchasing CTI hardware in those sizes?

I believe there are some 6g loads that also use the XL nozzle which won’t work in an aerotech case.

 

[mtnmanak]

Awesome, thanks for responses, I ordered all the hardware above from Tim today, so I should be good for all reloads except the M3700 - I can live with that

 

[Neutronium95]

You could probably fly the M3700 and 6 grain motors with the XL nozzle with the appropriate spacers and the 6XL case.