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Thunder Tiger
Raptor E325 › A new Mini-Titan for my fleet, anything to watchout for?
07-08-2008 12:40 PM  9 years agoPost 21
gmcullan

rrKey Veteran

Southbridge, MA

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Burlyman38, I have to agree with you on the servo to swashplate link angles, especially the rear (elevator) link. My plan is to fire up the Sherline lathe and make a spacer such that the link angle is at least consistent with the pitch and roll servos (channels 2 and 6). Hmmm, better thought as I write this, is just use some Evergreen styrene stock and make spacers for under the servo mounting tabs. Then I just move the entire servo forward. Come to think of it, the same thing should work on the pitch and roll servos. The project continues!

But then again, that's the fun of setting up a new heli. All the little "fiddly" things to make it "right".

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-08-2008 12:54 PM  9 years agoPost 22
Blackrat

rrApprentice

South Africa ;-)

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haha its only advise , if i had mounted my gyro on top i think i would be thru half a dozen gyro's by now , have you noticed how much movement the flybar has ?

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07-08-2008 02:36 PM  9 years agoPost 23
gmcullan

rrKey Veteran

Southbridge, MA

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Yes, a lot of movement, but even held at full travel it still misses the gyro by about 1.5". Now, if I were to stuff it in, I agree, all bets are off.

I learned my lesson about throwing a heli around the sky when I cut the boom off of one of my 300-sized helis during "extreme" maneuvering. I decided that typw of flying was not for me!

I'm old and slow, and so is my flying style!

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-08-2008 02:46 PM  9 years agoPost 24
Burlyman38

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Troy,IL

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Hell, If you got a lathe, you should be making you OWN helis!

Yes, you are right, I love the tweaking on the helis. I havent been flying for long, but each day I try to go hands off longer and longer. RIght now my best on the mini is 16 seconds. THe best I ever had on the King was about 11. It is amazing how quick you can go through batts just spinning up checking stability, setting it back down, make adjustments, then spinning it back up.

TripleB

TripleB
Flying by the street light.

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07-08-2008 03:03 PM  9 years agoPost 25
TJinGuy

rrProfessor

Socorro, NM - USA

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A note on the servo links being non-perpendicular, as long as all the links are at the same angle there is not a problem.

- Chris

Team New Mexico
TJinTech

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07-08-2008 03:17 PM  9 years agoPost 26
Burlyman38

rrKey Veteran

Troy,IL

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If the travel is smooth I guess it would be ok. BUT, it just seem that you are introducing friction by pushing against the main shaft.
Once you start pushing at an angle, even if all are pushing at the same angle, once you vector that force, it gives you horizontal force perpendicular to the main. I just do not see how that would not effect performance.

TripleB

TripleB
Flying by the street light.

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07-10-2008 03:09 AM  9 years agoPost 27
gmcullan

rrKey Veteran

Southbridge, MA

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Our earlier discussion on the link angles got me to to really look at the servo arm to swashplate links. I wonder it the angles are a design feature for whatever reason. I exactly followed the instructions when I built my Mini-Titan, including the link lengths. When the servos are at their mid-point, the washout mixer arms and flybar arms are perpendicular to the main shaft. The rotor blades are at "0" pitch. As I move the collective pitch through its range of travel, the swashplate remains level. Yes, due to the limitations of the DX6 transmitter and the S75 servos, there are some slight pitch and/or roll interactions. But the swashplate stops level when the servos stop moving.

I only have 8 flights on the MT, but I'm still satisfied. The canopy is painted. I just have to apply the chosen graphics, clearcoat it, and then mount the windscreen. Then the Mini-Titan will be done. More phtos to follow when the canopy is completed and mounted.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-12-2008 08:56 PM  9 years agoPost 28
gmcullan

rrKey Veteran

Southbridge, MA

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Finally finished the canopy

I finally finished the canopy and made the first flights today with the canopy installed. This is one smooth flying heli!

OK, the paint job. I used the natural creases on the canopy as guides for the color masking. The white areas are the canopy as received, the red is Testors Model Master Guards Red, and the yellow is Testors Model Master Insignia Yellow. Both paints were reduced from the bottle about 50/50 with Testors Model Master airbrushing reducer. The end paint approximated the viscosity of milk. The paint was airbrushed using an Aztec metal-bodied dual action airbrush. The pressure regulator was set to 20 psi. I used the gray, general purpose nozzle/needle set.

The vinyl graphics are the ones supplied with the Mini-Titan kit. The clear-coat is Future acrylic floor coating. This was also airbrushed, coming straight from the bottle with no reduction required. It was a four-day process to bring the canopy to completion.

You might notice that I'm flying with the white Align 325 mm main blades. These are too thin at the root to fit into the Mini-Titan blade grips without excessively tighening the grip bolts. The supplied Thunder Tiger blades measured 7.25 mm at the root. This was a fairly stiff fit into the blade grips. Using precision nylon washers, I increased the thickness of the Align blades to 6.75 mm at the roots. This seemed to be about a perfect fit into the blade grips. With this setup, and exactly using the specified link lengths as noted in the Mini-Titan assembly manual, blade tracking is right on. As an out of the box build, I think my Mini-Titan is the best to date.

Enjoy the canopy photos!

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-12-2008 11:20 PM  9 years agoPost 29
fenderstrat

rrProfessor

Aston,Pa

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GM,that canopy looks great,awesome job man.Glad you are enjoying the mini

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

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07-12-2008 11:50 PM  9 years agoPost 30
gmcullan

rrKey Veteran

Southbridge, MA

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Thanks for the compliment, Fenderstrat. It's almost easy when you have the right equipment. As a matter of fact, as I ponder a possible retirement, I've been thinking of custom painting items such as canopies, R/C cars, and slot cars. I find airbrushing to be a very relaxing activity.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-13-2008 03:27 PM  9 years agoPost 31
AltecLansing

rrElite Veteran

North Carolina

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You've done a great job painting that canopy. I hope mikne looks as good when its done.

Man, I miss the eighties.

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07-13-2008 03:28 PM  9 years agoPost 32
AltecLansing

rrElite Veteran

North Carolina

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Did you trim any of the canopy before painting? I find my canopy to be a pain to get on properly. I can see me chipping the paint while I am putting it on the heli.

Man, I miss the eighties.

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07-13-2008 08:48 PM  9 years agoPost 33
gmcullan

rrKey Veteran

Southbridge, MA

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The canopy and windscreen are completely trimmed prior to painting. I am too prone to mess up my paint jobs if I try to trim after painting.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-13-2008 09:23 PM  9 years agoPost 34
AltecLansing

rrElite Veteran

North Carolina

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I forget that you have to cut your canopies and windscreens on the regular mini titan. On the mini titan se, they come precut. I have problems fitting it on the heli without having to do some twisting or bending to the canopy. Its mostly because the bottome is too tight on mine. I should trim it.

Man, I miss the eighties.

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07-13-2008 10:00 PM  9 years agoPost 35
gmcullan

rrKey Veteran

Southbridge, MA

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I did have to enlarge the lower slots that slide over the landing-gear legs. That was the only non-standard trimming I have to do prior to canopy mounting.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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07-13-2008 10:04 PM  9 years agoPost 36
MicroVan

rrApprentice

Virginia Beach, VA

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I say put the gyro under the boom! There is a nice spot under there. Ever see a 401 all taped up because it was hit by a paddle?
that is exactly what happened to mine... LL

I love this hobby!

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Raptor E325 › A new Mini-Titan for my fleet, anything to watchout for?
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