Mtntop's blog - RC Groups
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Posted by Mtntop | Mar 16, 2012 @ 08:51 PM | 2,680 Views
So nice. Got two sets. Now what to put them in? Vector? Vmax?
Posted by Mtntop | Mar 15, 2012 @ 09:57 PM | 2,613 Views
Plug for new 60" twisty fuse. Slices all traced out and ready to be cut. Drill alignment holes then stack n glue n clamp.
Posted by Mtntop | Jun 01, 2011 @ 10:01 PM | 2,914 Views
Got my first parts for my CNC router. This is the high Zplate and extended bearing carriages from CNCRouterparts. I'm waiting for a 24" piece of 8020 1530 aluminum extrusion and 24" piece of 1/4"x4" cold roll steel and I'll be able to put the rest of the Z slide together.
Posted by Mtntop | Jun 15, 2010 @ 06:11 PM | 3,002 Views
The Fluid is still moving forward slowly. I keep revising little things with the design. While the designing has continued I've been stocking up on materials and supplies for the fuse mold and parts for the cnc router to do the final wing molds.
I was'nt happy with the design when it was able to use any of the WinchDocs Bling so I have since slimmed it down and will finallize the fuse area where the wingeron blocks will go shortly. I have a new block a friend is sending me to accomplish this. I would like to supply these with a monoblock design mechanism but we'll have to see how things go and if he'll be willing to produce them for the Fluid.
The plan right now for the prototype is as follows...
1) Prototype fuse will have 2" of fore/aft room to adjust placement for the monoblock (this will help in pinning down the final placement with regard to nose/tail moment, cg and performance) and a rmoveable self aligning fin ( also to work in concert with tail moment/rudder sizing to performance)
2) The protoype wings will be the same planform only in straight sections built as bagged foamcored sets (to test wing performance before commiting to a moulded wing). My main concern here is tip stalling of the wing, though the forward sweep of the wings will help alleviate this probability to a certain extent.
The mold layup itself has been finalized
2 piece parting board, splooge sealed around plug, split then sanded flat.
.25" half round keyway...Continue Reading
Posted by Mtntop | Sep 06, 2009 @ 11:15 PM | 3,547 Views
The Rotor or narrow block I'm parting with is the bottom one and the Vmax is the purple one.
Posted by Mtntop | Apr 24, 2009 @ 10:08 AM | 3,650 Views
I should be home monday and most of tues. I'm gonna print out the formers for the fuse and make the templates for the wing cores. Probably not have any time to do anything else but we'll see.
Posted by Mtntop | Apr 17, 2009 @ 10:20 PM | 3,548 Views
Had nothing to do so finally bit the bullet and started putting numbers in Helmut Lelkes' Design Analysis program. Everything came out ok. The areas where I was worried about (fin and stab not large enough for the slightly short coupled planform)didn't turn out too bad. The fin needs a little more area and the stab needs to lose some.

The stabs' no big deal cause I'll build it on the big side for R&D purposes to make sure she's stable and pare her down from there. The fin will be molded seperate from the fuse and either attached after the fuse is pulled from the mold or when the fuse is seamed. Either way I will be able to start with a slightly larger fin and pare that down also.

Used Joe wurts' spread sheet to get a better idea on the schedule to use on the wings. Nothing new and exotic schedule 5 layers starting with 4.1 oz uni full length then 5.7 oz bias to the 34 inch mark, alternating at 20.5, 15.38 and 10.25.
The bottom gets full length bias and a layer of uni that ends at 15.38.
I'll also throw in a CF spar cap probably 35 inches long on the top just to be sure

IF!!!!! This layup does prove strong enough the wings should be around 9 oz each! Thats with Spyder foam cores. Not bad. With standard twisty bits in her I may end up with a light wing loading of 14 oz per square foot. Not holding my breath though.

I really need to take the time and figure out XFLR5 and put the whole airframe through it to see what it has to spit out.

Well I'm stuck in Richmond Va for the weekend so that may be just what I'll do.

Here's some specs so far, and they may change. 96" ws, 398"sq, 23 to 1 AR, 30" sq stab and 45"sq fin.
Posted by Mtntop | Apr 07, 2009 @ 11:19 PM | 3,517 Views
Well I haven't upgraded my Rhinocad yet so I won't be able to post pics .
But I've got almost everything worked out in cad and all the templates for the fuse. Just waiting on some info from Winchdoc to finalize the fin.

I was worried that I wouldn't have enough meat in the wings for the wingrod tube where it needs to be with the shuemann planform but with the wonderful cad I've worked around that.

Hopefully more soon.
Posted by Mtntop | Mar 06, 2009 @ 10:17 PM | 3,648 Views
Well due to the economy I got hit as well. I was an owner/operator longhaul truckdriver til the beginning of November when I had to let our rig go back to the bank. It seams that life was going to help me along. No big deal, I had already been in contact with job opportunities locally so I wasn't worried. Except that around the same time I lost the truck those other jobs were hit also and those companies dissapeared!!! Dohp!!

Well we didn't stress and took the time to help raise my grandson while my daughter is finishing up deisel mechanic schooling this spring. He and I are just about inseperable now. Put the upstairs in my house (which I planned on doing when I first bought it 20 years ago!) and my wife and I moved our room upstairs. I kept 12x12 of it at one end with the idea of going back to tattooing and having that area as a startup studio.

Well another snag...Those that have wanted tats from me in the past now have no money for it and the ones that do have the money are from a life that I left a long time ago and definitely don't want to go back to!

So what now?.. My wife chimes in with "Why don't you turn the studio into your permanent hobby room so you can actually get somewhere with your designs instead of always having to take thm down then put them back up? And start doing what you really want to do?!" Which is producing rc kits of my own design. Yep my wife thought of it. If it was left to me I probably would haven taken another...Continue Reading
Posted by Mtntop | Aug 06, 2008 @ 07:30 PM | 4,296 Views
Well I've never done a blog before so bear with me.

I read Winchdocs' rant and it got me to thinking if I could ACTIVELY change my situation in life in order to enjoy it more. I guess to start this I need to fill you in on some background info for I think alot of my history will play into whether this will work or not.

Age.. 40
Married with 2 thirteen, 1 fifteen, 1 seventeen, 1 twenty yrold w a 1 yr old boy. All living at home.

Ack! must go fill in more tonight. Denver bound from Phoenix be there in the morning!