T-28 Dave Platt
#226
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
Be carefulwith the depth of the wing. Placea piece of balsa on the top of the wing to be sure the gear fits without protruding through the top. Also be sure you can take the gear out of the wing for servicing later.
Looking good.
Boyd.
Be carefulwith the depth of the wing. Placea piece of balsa on the top of the wing to be sure the gear fits without protruding through the top. Also be sure you can take the gear out of the wing for servicing later.
Looking good.
Boyd.
#229
My Feedback: (5)
Join Date: Jun 2002
Location: Green Valley, AZ
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Maser your keel looks flush with the top of the formers. Did you use 1/4 x 1/2 ? The keel should protrude 1/8th above the formers and the covering brought flush up against it.
Dean
Dean
#231
Thread Starter
My Feedback: (22)
RE: T-28 Dave Platt
ORIGINAL: maser
Dean RCU,
Great observation. I did not see that in the original build. I have already sheeted the bottom so can't correct the mistake.
Thanks.
Boyd.
Dean RCU,
Great observation. I did not see that in the original build. I have already sheeted the bottom so can't correct the mistake.
Thanks.
Boyd.
Boyd, just rip the sheeting off or I will point this out to everyone at the field
#233
Thread Starter
My Feedback: (22)
RE: T-28 Dave Platt
ORIGINAL: maser
Steve,
I might make the same mistake on my portion of the build for your Charlie Kellogg Skyraider. You better watch me closely. HA![img][/img]
Boyd.
Steve,
I might make the same mistake on my portion of the build for your Charlie Kellogg Skyraider. You better watch me closely. HA![img][/img]
Boyd.
#234
RE: T-28 Dave Platt
Hey guys
Thanks for the heads up on the fuselage. Something to watch out for when I eventually get that far. Will be epoxing the right hand main in tonight so I can finish the right side of the wing
Boyd thanks for all your help so far
Larry
Thanks for the heads up on the fuselage. Something to watch out for when I eventually get that far. Will be epoxing the right hand main in tonight so I can finish the right side of the wing
Boyd thanks for all your help so far
Larry
#235
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
I noticed in your pix you did not have anything on the trailing end of the ribs to support them while you were building. What is your method for the wing not to "warp" until you get some sheeting on?
Boyd.
I noticed in your pix you did not have anything on the trailing end of the ribs to support them while you were building. What is your method for the wing not to "warp" until you get some sheeting on?
Boyd.
#236
RE: T-28 Dave Platt
Boyd,
Actual her is a piece of 1/4" balsa stick under the ribs, just not at the tips. so far everything seems to be straight but as soon as I get the last 3 right side ribs in I will rechack before attaching the leding and trailing edge.
Still having a slight fit issue with the gear and W3 and 4, but I WILL prevail
Thanks for the concern, I really appreciate it... I'm such a neophyte when it comes to this, still learning as I go
Thanks again
Larry
Actual her is a piece of 1/4" balsa stick under the ribs, just not at the tips. so far everything seems to be straight but as soon as I get the last 3 right side ribs in I will rechack before attaching the leding and trailing edge.
Still having a slight fit issue with the gear and W3 and 4, but I WILL prevail
Thanks for the concern, I really appreciate it... I'm such a neophyte when it comes to this, still learning as I go
Thanks again
Larry
#237
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
Neophyte? Your Charlie Kellogg Avenger build looks good to me. I think you have added more detail than I might of taken on. Will be glad to see the finsihed product when you post the pix's.
Boyd
Neophyte? Your Charlie Kellogg Avenger build looks good to me. I think you have added more detail than I might of taken on. Will be glad to see the finsihed product when you post the pix's.
Boyd
#238
RE: T-28 Dave Platt
Boyd,
Question for you. It looks like you built 1 half and partially sheets it before moving onto the other half, am I seeing that right in the pix. I would have thought building the entire wing before starting the sheeting.
I have the retract permanently in and the airlines attached, have to thread the tubes for the hoses and servo wire extensions and put on the leading and trailing edges and affix the hinges and will be ready to partially sheet.
Larry
Question for you. It looks like you built 1 half and partially sheets it before moving onto the other half, am I seeing that right in the pix. I would have thought building the entire wing before starting the sheeting.
I have the retract permanently in and the airlines attached, have to thread the tubes for the hoses and servo wire extensions and put on the leading and trailing edges and affix the hinges and will be ready to partially sheet.
Larry
#239
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
You are correct. I sheeted about 2/3rds of the wing halfprior to going to the other side. This gives it just enough rigidity to hold the wing in alignment.
Boyd.
You are correct. I sheeted about 2/3rds of the wing halfprior to going to the other side. This gives it just enough rigidity to hold the wing in alignment.
Boyd.
#240
RE: T-28 Dave Platt
Thanks for confirming for me, I think that will mount the servos when I turn the wing over so I can make sure that they sit in the rib bays at the correct depths. It is amazing that as you get further along the more you want to see accomplished. I will post some pix next week.
Thanks
Larry
Thanks
Larry
#241
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
I hear you on that one. I am glassing mine as we speak.
I still have not resolved howI will keep the canopies closed in flight. They have no mecanical means to open and close them. All done by hand. I will incorporate some earth magnets some how with possibly a bolt. This one has me stumped.
I'll post some pix's when I have it primed.
Boyd.
I hear you on that one. I am glassing mine as we speak.
I still have not resolved howI will keep the canopies closed in flight. They have no mecanical means to open and close them. All done by hand. I will incorporate some earth magnets some how with possibly a bolt. This one has me stumped.
I'll post some pix's when I have it primed.
Boyd.
#242
RE: T-28 Dave Platt
Boyd
Good news on the glassing. First let me tell how how surprised I was tonite when I found the trailing wing Edge to trial fit and found that I have to cut it to size..LOL
I have been doing a lot of thinking of how to operate the canopy, we used the slides on the avenger and they are manual with magnets to keep it closed. What do you think about a threaded rod and a worm gear to drive the rod, that way you can actually determine the speed at which the canopy would open and close.
The other thought I had was to affix a 4-40 nut to the inside of the canopy and affix the rod to a small electric motor with a coupler and a reversing switch, let me know what you think.
Larry
Good news on the glassing. First let me tell how how surprised I was tonite when I found the trailing wing Edge to trial fit and found that I have to cut it to size..LOL
I have been doing a lot of thinking of how to operate the canopy, we used the slides on the avenger and they are manual with magnets to keep it closed. What do you think about a threaded rod and a worm gear to drive the rod, that way you can actually determine the speed at which the canopy would open and close.
The other thought I had was to affix a 4-40 nut to the inside of the canopy and affix the rod to a small electric motor with a coupler and a reversing switch, let me know what you think.
Larry
#244
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Larry,
I'm not sure how I'd fit a worm gear drive. Although this is a big model, there is not much space at the top of the fusalage to fit somthing like a worm gear. Besides it may take some extensive work to get it to fit. I'm so far along I would hate to start tearing things apart. Sounds like a good idea anyway.
Boyd.
I'm not sure how I'd fit a worm gear drive. Although this is a big model, there is not much space at the top of the fusalage to fit somthing like a worm gear. Besides it may take some extensive work to get it to fit. I'm so far along I would hate to start tearing things apart. Sounds like a good idea anyway.
Boyd.
#248
My Feedback: (5)
Join Date: Jun 2002
Location: Green Valley, AZ
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
[img][/img]
Hi Boyd, I lined the canopy frame with Velcro on the T-28, The 1/4 scale T-34 I recently finished was accomplished with magnets. You can purchase linear acuators here. http://servocity.com/
ORIGINAL: maser
Larry,
I hear you on that one. I am glassing mine as we speak.
I still have not resolved how I will keep the canopies closed in flight. They have no mecanical means to open and close them. All done by hand. I will incorporate some earth magnets some how with possibly a bolt. This one has me stumped.
I'll post some pix's when I have it primed.
Boyd.
Larry,
I hear you on that one. I am glassing mine as we speak.
I still have not resolved how I will keep the canopies closed in flight. They have no mecanical means to open and close them. All done by hand. I will incorporate some earth magnets some how with possibly a bolt. This one has me stumped.
I'll post some pix's when I have it primed.
Boyd.
Hi Boyd, I lined the canopy frame with Velcro on the T-28, The 1/4 scale T-34 I recently finished was accomplished with magnets. You can purchase linear acuators here. http://servocity.com/
#249
Join Date: Dec 2009
Location: Piedmont,
OK
Posts: 429
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
Dean
Thanks. Where doyou come up with your ideas. You seem to have a so many solutions.
I can see the velcro on your T-28 now that you told me what to look for. I think I'll use the magnets like you did on the T-34. This seems to be a easy solution to my problem without to much added work.
BTW-Have you used mechanical means to open/close your canopy, and if so which one do you like the best.
Boyd.
#250
My Feedback: (5)
Join Date: Jun 2002
Location: Green Valley, AZ
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
RE: T-28 Dave Platt
ORIGINAL: maser
Dean
BTW-Have you used mechanical means to open/close your canopy, and if so which one do you like the best.
Boyd.
Dean
BTW-Have you used mechanical means to open/close your canopy, and if so which one do you like the best.
Boyd.