Pattern One

My Feedback: (73)

Ed,

There should be enough space to cushion the tank once inside the bulkhead opening. Dan can always enlarge the opening in F2 if needed. Sullivan makes a 12 oz tank the correct shape as the one on the original plans. Thanks for the kind words. I plan to make some canopies and get back to work on the fuse or wing in the next day or two.


Leo

Pattern One

My Feedback: (73)

Hi Guys,

I received the built up wing kit from Laser Technologies today. W-O-W, I'm impressed. This is a very well thought out design. Pictures attached almost speak for themselves, but here are a few things to note: The plans are printed in color to identify the parts. There are highlighted areas on the plans to show the exact placement of the rib building tabs. This is the first built up design that I have ever purchased that has holes in the rib tabs for you so you don't break the tabs off when pushing the pins through. The fore and aft rib caps tie all the ribs together and provide exact placement of the parts. In Dan's notes these rib caps also provide an additional gluing surface for the edges of the sheeting.

The first picture shows the parts layed out on the plans. Second pictures shows the center ribs laminated and glued to the dihedral brace. Third picture shows the spar notches in perfect alignment after parts are pinned to the plans. Also pictured are the retract gear mounts, the top spar glued and clamped in place.

I am timing myself and will let everyone know how long the structure for the first panel took complete. More to follow later today.

Leo, aka glockguy

ccpetersen

Very nice!

Do you happen to know what retracts will fit?

Thanks

CustomPC

Are the tail surface included in the kit?

From what i can see in the picture of the plans earlier in this thread it looked like they were originally sheeted foam?

Also, how are the ailerons made?

Pattern One

My Feedback: (73)

ccpetersen,

I sent Laser Technologies a set of B&D retracts ( I sell them) so Dan could size everything to fit them. I'm not sure what other brands will fit, but I'm sure you can make adjustments for just about anything.

CustomPC,

Right now the vertical fin is 1/4" sheet as per the Midwest plans. Dan and I have been talking about using the built up vertical fin design as used on the M.A.N. plans to go along with a built up stab. The original Mach 1's used foam wings. I will also do a foam wing as part of this build with the idea that you can build it with either wing and still fit the fuse.

Leo, aka glockguy

CustomPC

Ok, thanks.

Is there any shaping required for the 1/4" sheet?

I've just noticed in the very first series of pics you show laser cut parts for the vertical fin and rudder, but in the later picture of the complete kit those parts are not there.

Are they included in the short kit?

handglider

My Feedback: (23)

Hey Glokguy,

Do you have a list of additional sheet wood that's not included with the kit? I am about to order one of the kits and just want to do an inventory of sheet wood needed to complete.

thanks in advance,

dean

PS. The kit looks great, can't wait to get started.....

wondering about doing an eletric conversion,

but I do have the various flavors of YS 60/61 - OS 61 RF. I am thinking about side mounting the RF engine and running the pipe down the side. any thoughts on that

Pattern One

My Feedback: (73)

CustomPC,

The ailerons on the original were made from 1 1/2" x 1/2" balsa and were detailed on the plans for cutting/shaping.

Update: Dan just sent me an email regarding his short kits. If you go with a built up wing you will get the built up stab and the ribs for a built up vertical fin. He forgot to put them in with the wing parts he sent me. If you go with a foam wing you will get a foam stab and the ribs for a built up vertical fin as per M.A.N. plans. Dan does not like a flat sheet for the vertical fin. The one you saw in the first couple of pictures of this thread will not be used.

OK, I finished the first wing panel with the parts in the short kit. I took me a total of 2 hours from the box to what you see in the final pictures. Pictured: Bottom spar ready to drop in and glue. Completed panel to this point with gear blocks and all dihedral blocking at 4.45 oz. The same with the B&D retract unit 5.90 oz. Just for fun I took an original Mach 1 foam wing and set the retract blocks and the B&D retract unit on it and it weighed: 5.60 oz, but did not include any kind of the dihedral bracing or fiberglass cloth around the center section. My guess is that both the built up and foam wing will be close in weight.

I hope to complete the other wing panel in the next day or two.

Leo, aka glockguy

Pattern One

My Feedback: (73)

handglider,

As of this time there is no sheet wood included with the short kit. That is something that you can discuss with Dan at Laser Technologies. The built up wing is designed for 3/32" sheeting. The foam wing uses 1/16" sheeting. Not sure about engines either. I need to make that decision in the next few days. OS 61 SF, 61 FSR, 75 AX, Webra 61 speed. I'm leaning towards the OS 75 AX.


Glockguy

ccpetersen

I'm thinking about an electric version as well. Something along the lines of a scorpion 4025-10 and 6S lipos. The motor is capable of just under 3HP so it ought to haul.

CustomPC

I've owned an OS .75AX in the past and it is a fantasically reliable motor but my guess is it will be physically too large heavy for the Mach 1. It's weighs more than an OS .91FX and thats a lot more than the .61's from the era when the Mach 1 was designed.

Even the modern day .61's are heavier then the older motors.

Maybe, have a look at the OS .55AX. With a good tuned muffler like the Ultrathrust from PSpec we're seeing great performance with 11x7 props and off memory the numbers match what the older .61's would do and they weigh roughly the same.

There's a few other comparable engines out there. I've always wanted to try a Jett and they make engines up to .76 in a .40 size case. Enya make the .61CX, Webra still make the Speed .61 and i think you can still find the Moki .61 Long stroke at Singapore hobbies.

Also, how many aileron servos does this use and where will they be located? Are servo mounts part of the kit?

Pattern One

My Feedback: (73)

CustomPC,

Thanks for the input on the engines. I have been thinking about the weight factor. Dan left the aileron servo(s) up to the builder with so many choices and mounting options available. I plan to use two aileron servos and will get to that after the other wing panel is complete.

Leo, aka glockguy

crankpin

My Feedback: (15)

IMO - OS 61 SF, ringed. Unless you have one sitting around, they do come up for sale. Power to spare for the Mach I.

Crank

Free Bird

Not trying to hijack the thread, but I just got a Compensator canopy from Leo and the quality is excellent! It's blemish free and very clear. Nice job Leo! Thanks for helping me out!

Now back to our regularly scheduled program......

FB

Pattern One

My Feedback: (73)

Free Bird,

Thank you for the kind words. I should be able to make some Mach 1 canopies over the weekend. Dan has the first batch to go out with his short kits.

Leo

ww2birds

My Feedback: (14)

Hi Leo,

Can you tell us a little more about which of the B+D retracts you sent to have sized on the plans? Are they the mechanical or pneumatic? Sonny is local to us and a friend of many in the club, so we know he make nice stuff!

Dave

Free Bird

No problem Leo, good products & services deserve the praise! Please check your pm.

FB

Pattern One

My Feedback: (73)

WW2birds/Dave,

The gear blocks and ribs in the Mach 1 are set up to accept the Pnuematic retracts from B&D. Sonny is a great guy. I enjoy talking to him.

Free Bird,

PM sent back to you.


I have been cutting and shaping various parts required for the Mach 1 today and will post a picture or two later today. It will then be back to completing the other wing panel.



Leo, aka glockguy

Pattern One

My Feedback: (73)

Hi Guys,

As I stated in my last post I spent most of today making and shaping various blocks, cutting standard size sticks of balsa and basswood to size. I now have a list of the balsa sticks, sheeting and a small amount of basswood I need to order on Monday to complete the build.

I laid out the ribs, retract blocks and the sub leading/trailing edges to get the other wing panel ready for assembly. More to follow.


Leo

Pattern One

My Feedback: (73)

Got back to work on the Mach 1 today. I installed the Aileron servo extension tube and the leading/trailing edges. One can never have too many clamps. Pictures attached. I should be able to start the other wing panel today. More to follow.

Leo

Pattern One

My Feedback: (73)

Hi guys,

I assembled most of the other wing panel and took some pictures along the way. The parts fit is outstanding (thanks Dan) with no surprises. I included a picture of how the other wing panel is supported. Building board height plus 1/2 under the rib tabs. I realized I did not take a picture of the completed wing and will include that in my next post. My next step will be to add the leading/trailing edge material, work on the servo mounts and then sheet the wing. This has been very easy to build and a great deal of fun. I hope everyone is having fun watching the progress. Tomorrow I am going to make a few canopies. More to follow.

Leo, aka glockguy

Pattern One

My Feedback: (73)

I added the leading/trailing edge stock and it looks good. I will get the LE/TE trimmed and shaped in the next day or so. More pictures showing the work and I tried to show the dihedral. That's all for now.

Leo, aka glockguy

CustomPC

Does it need shear webs between the spars?

Pattern One

My Feedback: (73)

CustomPC,

Yes, I will be adding 1/16" shear webs on the front side of the spars. It is indicated on the plans.


Leo

Pattern One

My Feedback: (73)

Hello Everyone,

The parts for the built up Vertical Fin and Horizontal Stab arrived today. Everything went together quickly and fit very well. The LE/TE parts are laminated and interlocked with the ribs to make alignment easy. The LE/TE will be sanded to rib profile. The sheeting will lap on to them and be sanded to profile. See pictures attached and stay tuned for more.


Leo