# Bwahahahahaaaaa!!! FATBOY!!!!!

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#### Neil

##### Well-Known Member
Well, I finnaly got my hands on a fatboy! I am going to give it 7 18MM motor mounts... I *MIGHT* change my mind and decide I want a central 24MM, but I dont think I do... I think ill go with all 18MM to keep costs down. How big a flame do you think I will get from 7 C6-5s? Or maybe just 3 C6-5s for the first flight...

#### OKTurbo

##### Well-Known Member
TRF Supporter
....you're nuts....

#### wwattles

##### Well-Known Member
Neil,

Just watch out how much weight you are adding to the back of that thing - adequate nose weight is hard to add on those stubby rockets without making them too heavy!

WW

#### Neil

##### Well-Known Member
I have been informed... many times...

Well, people have managed to put Is in those things, so I bet theres a way...

The power of BBs is great, my friend...

#### Ryan S.

##### Well-Known Member
usually the flam isnt very big, look at the rocket on the Rocket Challenge. However there will be lots of smoke

#### DPatell

##### Well-Known Member
Flew mine on an I205 today It was hauling, then BOOM!

#### marvSRG

##### Well-Known Member
Heh. I beat you. I managed to stuff a G35 and 8 C's in mine. The nose is like freakin' three pounds, tho. Ha.

#### Neil

##### Well-Known Member
Howd ya get all those in? Did you widen the tube? How did you get a 29MM and 8 18MMs in that thing?????

sledge hammer?

#### marvSRG

##### Well-Known Member
Nope....JB Welded the motors together, then placed 29mm CR's and tube in the rocket where the 18mm's butt up against it, and slid it in. It was a quick fun rocket anyways. Never has flown though. I'll email you my "5-minute MS paint" interpretation of how I designed the motor mount and motor "package."

#### BlueNinja

##### Well-Known Member
I say go with the maximum number of the biggest MMT you can fit in it. Will 2x38mm work?

#### marvSRG

##### Well-Known Member
Multiple 38mm's won't fit, but multiple 29mm's may...dunno. I was just going for maximum motors, tho.

#### Neil

##### Well-Known Member
Ill PM it to you.

So you didnt have motor tubes? You just glued motors together?

I think I want to cluster BP motors... I dont want to have to worry about the composite clustering thing right now...

#### Chr$##### Well-Known Member PODS. A guy in my club flew one with a central 24mm, six inbboard 18mm's and six outboard 18mm's loaded into pods, one attached to each side of each fin at the root, and a nose full of clay. with 12 C6's and an F21, it's a 163 Ns (H) Level 1 rocket. Wahoo! Flew like a bat outta hell. #### Neil ##### Well-Known Member Whoo dawgies! I bet it did! a dozen Cs and an F... That must have been something to see! Do you have a pic??? #### JoJo ##### Well-Known Member i wouldn't reccomend that. my fat boy only lasted one flight with a C engine.the thing is suprisingly light and with the 18in parachute they drift a good ways. #### marvSRG ##### Well-Known Member JoJo- You are right about a stock FB, but I know at least mine is really, really beefed up Neil and Chr$,

That was Marc Cassanova's FB, wasn't it? There used to be a link to it at the Vatsaas site, but I can't find it at the time. That was really cool, as was his Darth Mauls Revenge...he's a cluster freak.

So you didnt have motor tubes? You just glued motors together?
Yep...with JB Weld. I'm gonna email you the paint pic tonight. It works fine.

#### Tools R Us

##### Well-Known Member
I say go with the maximum number of the biggest MMT you can fit in it. Will 2x38mm work?
A 54 mm mount fits very nicely!

#### Chr\$

##### Well-Known Member
Yeah, that was Marc's. Darth Maul's revenge has 36 motors, IIRC. Seen both of them fly. Kewl. The BT was not stock, it was much beefier.

There seems to be a growing clustering movement in our club. I missed it last launch, but one of the guys sent up 41 motor cluster. 38 lit, including the center Redline. He has a 100 motor cluster planned.

Clusters Rule.

#### Neil

##### Well-Known Member
Holy cow!!!!!! 100 motors!?!?!?!?!??!?!??!?!?!??!?!?!?!??!?! man.... I gotta see pics of THIS as soon as he has em...

#### slim_t

##### Well-Known Member
I picked up another Fat Boy a couple weeks ago and also planned to go with 7 18mm mounts. I tried cutting some extra holes in the stock CR's, but it didn't leave enough material to satisfy me, too flimsy. So I'm going to try and cut some from plywood, or maybe try some of that foam poster board sandwich stuff.
I also plan on a few other mods to help with stability, so it won't be a Fat Boy at all by the time I'm done, if I ever get done.
Too many projects in the works.

Tim

#### jetra2

##### Well-Known Member
I started working on a Fat Boy to use 1 24mm and 6 18mm motors a while back. I had fiberglassed the body tube with 3 layers of 1.5oz glass, and "built" the motor mount, but then I lost interest in it. I'm thinking it might be cause I did a crappy job on the MMT, but I think now I will just cut some plywood rings for it and give it either a real 1x24mm and 6x18mm mount or a single 29mm mount. I'm not sure. The 29mm mount sounds fun. I need something to burn SU motors in...

Thinking...

Jason

#### Ryan S.

##### Well-Known Member
I have a fatboy around. Maybe I will need to be trendy and stuff a bunch of motors in it

#### richalex2010

##### Well-Known Member
Originally posted by slim_t
So I'm going to try and cut some from plywood, or maybe try some of that foam poster board sandwich stuff.
You can get them custom cut from Rocketguts and, from the comments, they seem to be very high quality. I plan on getting some fins for a 2.6" L1 rocket soon (Maybe I'll cert with it). Also, Neil, I had the same idea. If you ant 7, 18mm motors, you can order the BT-80 mount and plug all of the motor tubes but 1 so that you can fly it on one motor, or you can fly it on 6 Estes motors and 1 Apogee long burn motors (When they are being produced again. And, also, that one motor will be the on that won't light, I'm sure. The rocket gods just like seeing lawn darts, I'm sure). That is what I am thinking about doing to mine (I flew it a few times and the fins broke, si I figured, "While I'm fixing the fins, why not use up more motors while I'm at it?"), but with the 24mm and 4, 18mm motor mounts so that I can fly on an AT 24/40 RMS setup that I should be ordering today or tomorrow.

#### rocketkid88

##### Well-Known Member
my poor Fat Boy wants more, bigger motors.... it just got 1x18 and 2x 13... landed in a tree first flight 2, but i got it back a few dayz l8r. even with nose weight and the extra motors that 'cute drifted it...

clusters are fun my next cluster will be a Big Daddy thats waiting... but another FB would be fun too!

#### slim_t

##### Well-Known Member
Originally posted by richalex2010
You can get them custom cut from Rocketguts
Well since posting that, I have already cut my own rings and installed the motor mount. However, I set it aside to work on something else after that. I really need to get back to it.
I plugged 4 of the mounts, leaving 3 open so that I can launch it on any # of motors 1-7. I'll have to post some pics once I get back to work on it.

Tim

#### Westy

##### Well-Known Member
The Fat Boy is truly an Estes kit begging for modifications! The stock kit although a great looker doesn't perform well on just the stock 18mm MMT. I modded mine to take a single 24mm MMT, kevlar shock cord, nylon chute, brass launch lug...bit of nose weight and it now flys regularly on the E9-6....very impressive flights now! SLow lift off as it accelerates..nice flame which is very visible now...nice high flights to about 1000 feet.

This is by far my favourite LPR kit (so far)!

Westy

#### Bowhunter

##### Well-Known Member
I need to get me another Fatboy I got the motor mount done for it 4-24mm HHHHHAAAAAAAA

#### Bowhunter

##### Well-Known Member
Yea Four E-9's or How about composites