Good point Erik,
My knuckles are pretty scratched up just from dremeling the 98mm. No way I
could have managed with 75mm. I went back in tonight and put some beefy
internal fillets on the fins before I put in the motor mount tube. This
would have been pretty difficult as well at 75mm with the three centering
rings. After reading your post I took a look at McMasters and found 3 1/8
inch hole saws. These would probably do the trick. If anyone has a source
for the cheap(er) hole saws I would appreciate it, I can't seem to find
anything less than $12 each for the larger sizes.
The only problem now is I have started looking at 4" aluminum tube stock for
making a 98mm motor! That large motor mount beckons! 98mm sugar motor should
really take this rocket for a ride!
Where is a narrow beam light sabre when you need one...
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD"
>>> To reply, remove the TRABoD! <<<
Kaplow Klips & Baffle: http://nira-rocketry.org/LeadingEdge/Phantom4000.pdf
www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org
Save Model Rocketry from the HSA! http://www.space-rockets.com/congress.html
We are now firm believers of making it take the biggest motor possible! Can
always adapt down, adapting up requires way to much work. But the cost is
much less than building a new booster.
PS The 1/10th scale Saturn 1B will have 5 6" motor mounts, can always go
down in size. but if it ends up to heavy, don't want a garden statue...22'
Tall, 26" dia. Should stat build parties next month if all goes well.
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