# Thrustline Arapaho E

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#### lawndartman

Somedays, things go OK. I picked a Thrustline Arapaho E off E-Bay for $40.00. Hard to find kit on my must have list. Merry Christmas to me! I try never to post things like this, but.... Stay safe all. #### heada ##### Well-Known Member Squirrel-works got the rights to make more kits. You could have purchased a current kit from them for just under what you paid for the e-bay kit. #### shawn_rocket ##### Well-Known Member TRF Supporter Somedays, things go OK. I picked a Thrustline Arapaho E off E-Bay for$40.00. Hard to find kit on my must have list. Merry Christmas to me! I try never to post things like this, but.... Stay safe all.
Very cool looking rocket!

#### rharshberger

##### Well-Known Member
Very cool looking rocket!
Just a little upscale, built with T300 Estes PS airframe.

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#### Scott_650

##### Well-Known Member
Just a little upscale, built with T300 Estes PS airframe.
Is that the standard 3” Estes nose cone? It looks shorter but that could be from the angle of the photo.

#### NOLA_BAR

##### Well-Known Member
I built an upscale using Semroc LT225 tubing and balsa nose cone. Decals from stickershock. Flew it this past September on a CTI H54. Beautiful flight.

#### rharshberger

##### Well-Known Member
Is that the standard 3” Estes nose cone? It looks shorter but that could be from the angle of the photo.
Yes, its a Big Daddy nosecone, the tailcone is made from a Balsa Machining/Mercury Engineering/Apogee nosecone that fits the T300 airframe, its critical to the look that the nosecone be a shorter aspect ratio than the tailcone

#### Tobor

TRF Supporter
Just a little upscale, built with T300 Estes PS airframe.
Yes, its a Big Daddy nosecone, the tailcone is made from a Balsa Machining/Mercury Engineering/Apogee nosecone that fits the T300 airframe, its critical to the look that the nosecone be a shorter aspect ratio than the tailcone
Hello Rich,
your comments got me thinking about the 3" Arapahoe upscale OR file I did some time ago. After comparing it to your build I've realized my sim is off a tad at the tail end. So, any chance I could have a look see at your sim file? I am assuming you have one of course?

#### rharshberger

##### Well-Known Member
Hello Rich,
your comments got me thinking about the 3" Arapahoe upscale OR file I did some time ago. After comparing it to your build I've realized my sim is off a tad at the tail end. So, any chance I could have a look see at your sim file? I am assuming you have one of course?
I do have one for OR but as far as flight performance its questionable due to the tricks needed to get fins on transitions.

#### neil_w

##### Marginally Stable
TRF Supporter
I do have one for OR but as far as flight performance its questionable due to the tricks needed to get fins on transitions.
If you want me to port that file over to the new OR alpha (which supports fins on transitions) just send it over. Could be interesting to compare the sim results.

#### sandeja1

I built an upscale using Semroc LT225 tubing and balsa nose cone. Decals from stickershock. Flew it this past September on a CTI H54. Beautiful flight.
View attachment 440710
Are you using "mechanical" (is that the right term?) motor retention or a friction/tape retention on this? Either way it is a Beautiful rocket!

#### NOLA_BAR

##### Well-Known Member
Are you using "mechanical" (is that the right term?) motor retention or a friction/tape retention on this? Either way it is a Beautiful rocket!
I used friction tape. I also used a couple pieces of 3M metal tape around the aft closure and motor tube. The metal tape is really strong and malleable so it wraps tight.