29mm V2 LL

[Rat]

Well, my upgraded Estes CA/V2 is waiting for sanding and primer. It hasn't even been trimmed with any nose weight yet and it already is pushing 8 oz. according to my ultra cheap postal scale. Bottom line is that this thing is going to be heavy. With that in mind do I ditch the LL for railbuttons? What do you use for criteria when decdng to use buttons? Weight, height, FPS? I'm sure the answer is here somewhere but I can't find it.

Thanks!

 

[Stymye]

On 29mm rockets I preferr to go with a 1/4 rod or rail.
Mainly because our lowpower rods are somewhat closely spaced so I preferr not to potentially scorch or knock the adjacent rocket off it's standoff.

we have seperate midpower pads for the 29mm stuff

 

[outasight13]

Originally posted by Rat
Well, my upgraded Estes CA/V2 is waiting for sanding and primer. It hasn't even been trimmed with any nose weight yet and it already is pushing 8 oz. according to my ultra cheap postal scale. Bottom line is that this thing is going to be heavy. With that in mind do I ditch the LL for railbuttons? What do you use for criteria when decdng to use buttons? Weight, height, FPS? I'm sure the answer is here somewhere but I can't find it.

Thanks!

8 ounces is really overkill for a rail. I would go for a 1/4" rod as styme said.

 

[loopy]

Originally posted by outasight13
8 ounces is really overkill for a rail. I would go for a 1/4" rod as styme said.

I'd agree with that. I normally don't go to rail buttons unless I plan on launching on HPR loads. If it's G and below, 1/4" is fine.

 

[Rat]

It's 8 ounces without noseweight, recovery. or propulsion. It will probably be double that ready for flight. Well maybe not double but at least 12 I would think.

So is the general idea that buttons are unnecessary until you start talking high power? I would think it is more an issue of weight and speed off the rod/rail no? This being my first 29mm bird and the first one this heavy makes me quite apprehensive. I feel like Ive created a monster here.

Thanks!

 

[loopy]

Originally posted by Rat
It's 8 ounces without noseweight, recovery. or propulsion. It will probably be double that ready for flight. Well maybe not double but at least 12 I would think.

So is the general idea that buttons are unnecessary until you start talking high power? I would think it is more an issue of weight and speed off the rod/rail no? This being my first 29mm bird and the first one this heavy makes me quite apprehensive. I feel like Ive created a monster here.

Thanks!

It's more about weight and thrust, I think. If you have a heavy model with alot of thrust, the force of the motor can bend a rod over as the rocket travels up, then it will get whipped off the top of the rod. As for what's best on this one - I fly my PML Amraam 2.1 on G64 and G77 loads off of a 1/4" rod with no problems. Same for my AT Strong Arm and Initiator. The lightest of these is 16oz without a motor.