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Old 05-25-2005, 03:37 PM
EchoVictor's Avatar
EchoVictor EchoVictor is offline
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Join Date: May 2005
Location: Metro Detroit, MI
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Default Estes Renegade - Booster Mods?

All,

I just picked up an Estes Renegade (#2109) last night, and I figured I'd read up a little on other's build experiences;

http://www.rocketreviews.com/review...t_renegade.html

According to the reviews and the flight logs, it looks like a lot of folks see damage to the booster sine it's so heavy. I had an idea on modifying the whole kit, but I wanted to bounce the idea off someone else first. I'm just getting back into the hobby after a 20-year hiatus.

Here's my plan;

I was thinking of moving the booster pods (BT-50s with cones) and the larger wings that carry the BT-5 cone pods up to the main body as opposed to the original design, mounted on the booster section. I know this will move the CP forward a little, but do you think I can compensate with a little more weight in the nose?

I'd hate to go through all the effort to build it that way and find out it's unstable.

Thanks for your input.

Later,
EV
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Old 05-25-2005, 08:35 PM
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CPMcGraw CPMcGraw is offline
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Join Date: Mar 2005
Location: Mobile, Alabama
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Default

Quote:
Originally Posted by EchoVictor
I just picked up an Estes Renegade (#2109) last night, and I figured I'd read up a little on other's build experiences...

Here's my plan;

I was thinking of moving the booster pods (BT-50s with cones) and the larger wings that carry the BT-5 cone pods up to the main body as opposed to the original design, mounted on the booster section. I know this will move the CP forward a little, but do you think I can compensate with a little more weight in the nose?


Without doing a sim on it, adding a little weight to the nose should help. Putting the pods on the booster, however, was a bit silly, even for Estes...

As you've seen by now from the CDD and CTD concepts, having the largest fins on the boosters isn't absolutely necessary to maintain stability. It would take much larger fins to do what was accomplished just by adding a payload section to the sustainer for an additional 5"!

Another thing you might try would be to attach the BT-5 pods to their tips with epoxy -- BUT VERY SPARINGLY! Use only a thin, almost invisible smear, on the tip and on the pod where the two will mate, then carefully wipe away any excess. This stuff is good, but it's like adding steel-reinforced concrete to the tail.

I have one of these still in the bag. This problem requires more study to come up with a really workable solution. NEW PROJECT TIME.

Craig McGraw
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