Removable engine mounts

[Darian Rachal]

What is the simpliest way to construct interchangable motor mounts for a rocket.

 

[jflis]

depending on the size.... if you want a motor mount to change from standard length 24mm to 18mm, buy the EMK-18-50 from FlisKits. It's an engine mount kit that doubles as a converter/removeable engine mount...

what sizes are you looking at? LPR, MPR, HPR??

jim

 

[Darian Rachal]

Jim, I was thinking more in the sense of a Fat Boy or something with a BT 100, having a 29mm mount, interchangable with a 24mm cluster arrangment. Although the more I think about it, the less practical it seems.

 

[OKTurbo]

Don't give up already Darian.

I'm doing just this with my "Maxi Red Max" project. It's a BT80 upscale der Red Max with interchangeable motor mounts.

Check out the pictures at
https://www.rocketryforum.com/showthread.php?s=&threadid=7882

John

 

[jflis]

You could start with our EMK3-24-70 which is a 3 motor 24mm cluster that comes in a BT69 which just fits inside a BT70 tube. that would allow you to make the removable 24mm cluster mount. Then you could buy a pack of BT-69 tubes to scratch the 29mm alternate mount.

thoughts?

jim

 

[DJ Delorie]

Note that the BT-69 conversion is one of the suggestions for the Rickter Recker, since it uses a BT-69 cluster inside a BT-70. Maybe a 29mm option for the RR?

 

[wwattles]

Another option is to build a series of different mount configurations inside tube couplers. I've got several tube couplers that all fit inside a BT-80, with everything from a single 29mm to 4x24 to 1x24 to 4x18. They're all designed to fit my Estes Phoenix, which I friction fit them into out on the range when I can see what I want to fly that day.

WW

 

[shockwaveriderz]

do a serach here in TRF this was discussed maybe a few months ago and I attached a drawing showing how you could create a qucik and dirty removable motor mount system......

 

[Darian Rachal]

Thanks for all the responses. When I get over this BAD cold I'll spend a little more time checking into the matter.

 

[shockwaveriderz]

darian:
I replied to this over here:

https://www.rocketryforum.com/showthread.php?s=&threadid=8088

BMS has centering ring kits for 2/3/4 bt-50 in a BT-80 body tube..

You might have to get some custom rings made for a 1/2/3 29mm motor mount rings

 

[Stymye]

heres annother thread


https://www.rocketryforum.com/showthread.php?s=&threadid=5639&highlight=interchangable+motor+mounts