Well what's this?

[blackbrandt]

This came in the mail the other day

It dry fits pretty well... I guess that means I gotta build it. :rofl:

38mm motor mount. Considering putting 2x24mm motor mounts in it.... thoughts?

 

[rocketjet787]

2x24!

 

[blackbrandt]

I would do a 2*29 but the tube is about 1mm too small.

 

[rocketjet787]

Then how about 3x24? :eyeroll:

 

[blackbrandt]

Fair enough.

 

[AHansom]

Fair enough.

I like the Idea!! I did a slightly downscaled King Kraken a few years back with 3 24MM holes. One of the things i had problems with is I dont think I was ever able to get all three to light at once using AP motors.

 

[Tonimus]

4x29 and wedge mount the fins...

 

[blackbrandt]

Explain? Not sure what you mean by wedge mount.

 

[T34zac]

Explain? Not sure what you mean by wedge mount.

He means you put do TTW fin mounting and glue each fin to the space between motor tubes.

 

[jd2cylman]

Explain? Not sure what you mean by wedge mount.

This doesn't involve undies?

He means you put do TTW fin mounting and glue each fin to the space between motor tubes.

Oh, yeah, that kind of wedge... Much less painful, and less embarrassing... :dark: :wink:

Adrian

 

[MClark]

A Patriot has pretty small fins.
When going to a cluster you need to watch the CG.

M

 

[blackbrandt]

I may look at that.... only problem is that im hoping to keep it light enough to fly at a low power field (3.3 pounds).

I probably will end up doing 2 24mm boosters around the 38mm central. I've never done a cluster so this seems like a good way to start

 

[Tonimus]

If you've never done a cluster, a single center motor does make more sense. Also, keeping it under 3.3 pounds, good luck. Mine weighed about 10 pounds, ready for flight. But then again, I do over-build pretty much everything...

 

[watermelonman]

I would do a 2*29 but the tube is about 1mm too small.

When I was much younger, I used to make two motor clusters this way. With Estes and similar tubing, cut slices to cram slightly more than fits. I liked wedge mounting through wall fins for one opposing pair, and simple surface mount for the other. It gives a unique look if you started with four duplicate fins, though you could also cut beforehand to make them all look symmetric once finished.

 

[markkoelsch]

The two 29 mounts sounds good. If too tight just lose the motor mount runs, and have centering rings cut to match the OD of the motor. Easy enough. Also you lose the weight of the motor mount tubes improving static margin.

 

[codysmith]

I got my patriot from the same guy that Matt got his. I got the 54mm MMT instead though! I won't be doing a thread on it. There are plenty of those...