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HelicopterScale Model RC Helicopters Docs  MC 700 size AS350
01-23-2013 07:37 PM  4 years agoPost 41
liljalepenorrNovice - Dublin, Ireland - My Posts: All  Forum  Topic

Great work mojave and definitely keep going!
Bell222 hinge idea works and looks great so I'll be copying the idea myself, thanks bell222
Have to agree too with keygrigger, my subject is a twin turbine, whereas this is a single turbine and my subject has a sliding door on the left also. If I wanted super scale, I wouldn't have bothered at all so my philosophy is too make em look just enough like the subject and then have some fun with em. Speaking of fun, anyone actually flown one yet or got a vid of one of these in the air? I found this youtube vid but not sure it's a marvelcraft AS350, any ideas?
http://m.youtube.com/?reload=7&rdm=...h?v=tIFPuk1zOfI

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01-24-2013 07:07 AM  4 years agoPost 42
stunt4fun

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So Cal - usa

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Here is a pic of a friend of mine and one of the 350's he maintains. If I can't get ya detailed enough pics I'm sure he can.. Just wanted to share the pic he sent me with you guys. Hope this help give some people ideas!

Ken

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04-28-2013 09:11 PM  4 years agoPost 43
Mojave

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Palos Verdes, Ca. USA

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Well, the AS350 mechs are in the air and flying great. It's time to stuff them in the fuse and see how they fly. I'm using a 700mm 3 blade set of spin blades on this bird. They fly great! Stay tuned...
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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05-20-2013 04:01 AM  4 years agoPost 44
stunt4fun

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So Cal - usa

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Where are you at now on the build? Lets get her all dolled up for HSM..

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05-20-2013 01:27 PM  4 years agoPost 45
Mojave

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Palos Verdes, Ca. USA

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Hi Ken, I'm close to putting the mechs back in the fuse. I need to run lights (could use some advice), then install rivets. Then she should be ready for paint. Give me a call and we'll figure something out.
Thanks, Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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05-31-2013 04:19 PM  4 years agoPost 46
satsuma

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UK

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My MC AS350 is coming along now, just got this scale head for it, using 700mm Spin blades also.

http://i167.photobucket.com/albums/...zpsd24f0636.jpg

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05-31-2013 11:53 PM  4 years agoPost 47
Mojave

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Palos Verdes, Ca. USA

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Very nice starflex rotor head! Not cheap by any means...
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-01-2013 02:25 AM  4 years agoPost 48
stunt4fun

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So Cal - usa

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Just saw your message barry. I'll give ya a buzz tomorrow!

Ken

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06-01-2013 07:35 AM  4 years agoPost 49
satsuma

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UK

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Barry hi.

This Starflex is the NEW one from Marvelcraft, awesome head and a great price, comes with nice swash and follower.
Only $284.95 or £189.00 GBP, very pleased with it, will fit it to my 700E with the Spin blades and set it up ready to go in the Airstar, how is your bird coming along ?

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06-01-2013 01:22 PM  4 years agoPost 50
Mojave

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Palos Verdes, Ca. USA

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Wow, that's the most reasonably priced starflex that I have seen! Had it been out when I built my AS350, I would have bought it. My AS350 is ready to maiden tomorrow (in primer). I have already flown the mechs in 3 blade config to work out the bugs. Now the mechs are all reinstalled in the fuse and ready to go. After the maiden and a few shake down runs, I'll blow it all apart for the details and paint.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-01-2013 08:04 PM  4 years agoPost 51
satsuma

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UK

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Barry, look forward to your test flight and photo's, good luck.

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06-02-2013 09:31 PM  4 years agoPost 52
Mojave

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Palos Verdes, Ca. USA

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Well, I maidened her today and I'm going to call it a success, even with the small issues... The overcast sky made it nearly impossible to see which way a primer gray heli is facing Lately I can't seem to get a day with under 15-20mph winds to maiden a heli. Oh well, it's still better than rain (cups always 1/2 full)!

First, these freekin spin blades produce sooooo much lift for a narrow chord blade, that this 18lb scaler was just dancing around the sky. I have +5 at center stick and the heli lifted off at 1/3 stick! So, I'll be changing to +3 at center stick.

At 1300 RPM HS (1400 idle 1) and 105mm tails the heli was fine in a hover, but didn't have enough tail authority in FF. I was down range with 15mph on shore ocean crosswinds and just inputted rt rudder to see how she responded and had almost nothing at full rt! So after my chocolate starfish quit puckering, I just rolled right and brought her in for a landing.

So I switched to 120mm tails (all I had in the field box), went up for another flight and the tail came back on line. I have a plan to fix this and still run the 105 tails. Align came out with a speed up gear for the rex700 a while back. Seems that the fish heads were blowing out the tails during frenzied crack pipe flying, so they designed a 4.9:1 ratio tail for the 700. So, I'll retrofit this gear set and still be able to fly the low HS. I'll report back on the success or failure of this mod. I really like flying lower head speeds, so this mod is worth it to me. Here are the Align PN's for the tail mod:

104 tooth slant auto gear H70G007XXW $19.99
TQ tube front gear set H7NG001AXW $13.99
Rear tail box gears/shaft H70G005XXW (I'm not using this gear set as I'm using a rex 600 tail box on this heli).

Next up is cockpit, details and paint, stay tuned...
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-02-2013 09:40 PM  4 years agoPost 53
satsuma

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UK

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Great news Barry, glad all turned out well, thanks for the tail mod info, I will order the parts before I maiden mine as they are needed anyway, will also remember to set my hover pitch at 3 to4 degrees lol

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06-02-2013 10:57 PM  4 years agoPost 54
doorman

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Sherwood, Arkansas

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Looking Good

Barry glad to here its all working out nicely! !!
Also the info on the spin blades!! Nice!
That new Marvel Craft head is very sweet looking too..
Just amazed at the equipment that has become available in about the last year!! Us scale guys are being treated like part of the heli community now!! Gotta love that!!
Nice looking 350's

Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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06-02-2013 11:32 PM  4 years agoPost 55
Mojave

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Palos Verdes, Ca. USA

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Sats: Yeah, I'm hoping for the best on this tail mod. I'd really like to keep the HS around 1300rpm. The heli flies well and sounds more scale at that HS. I like the whop whop sound and the blade bark at lower HS. The only thing that I could not verify when ordering the speed up gears was whether the auto and driven gear, or the umbrella gears have been changed to up the tail speed. Both of those gear sets are included in the parts list that I posted. My mechs are buried in the fuse, so I'm not able to count the teeth on the auto gear or driven gear to compare them to the ratio that is already installed in my mechs. I'm assuming (from what I've read) that the auto/driven gear set is where they changed the ratio. The auto gear is 104 tooth and the driven gear is 21 tooth, for a final ratio of 4.95:1. You might want to hold off on placing your order, until I receive the parts and verify this info.

Stan: Yeah, I think if I have enough heli bucks left over, I'll have to buy that MC starflex head. That is one nice looking piece for the money. I have been very impressed with the Spin blades so far. They will definitely take some getting used to, as they flex more than I'm used to and they tend to ballon a bit in the wind. But overall, very good performance so far.

Now all I need is a nice cockpit for this bad boy. Any suggestions for the cockpit are welcome. Skyhunter is not selling their 700 size cockpit separately from the fuse kit.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-03-2013 03:21 AM  4 years agoPost 56
tintmaster

rrKey Veteran

Wichita, Ks. U.S.A.

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MC 700 AS350

Nice Barry!!

Just call me Farmer Brown. 'Cause I know how to really plant 'em

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06-04-2013 04:43 PM  4 years agoPost 57
Mojave

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Palos Verdes, Ca. USA

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Tint: Thanks Bud

Sats: I took the mechs out of the fuse last night and verified that the change in tail ratio is done through the auto and driven gear. So this should be a very easy fix for the tail authority issue. I also think that the billboard sized vert stab has a hand in the issue, but at least this will get the tail speed up to compensate.

The cyclic response with the spin blades is very crisp, so I moved the servo balls in 1 hole closer to the centerline of the arm. This should soften it up a bit.

I also had an interference issue with the tail pitch control rod. It runs right down the C/L of the hor stab, so I can't install the stab without cutting the center section out. I decided against this approach and am in the process of installing goldenrod for the tail. I use the yellow/blue version of GR and I slide a .060 dia piece of solid carbon rod down the middle of the yellow rod to stiffen it up. I have had very good luck with this fix in the past. I'll take pics and update the post after I have it sorted out.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-15-2013 06:26 PM  4 years agoPost 58
Mojave

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Palos Verdes, Ca. USA

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Here's the latest: I swapped in the new speed up gears for the tail and I had plenty of TR authority with the 105mm tails on 1400rpm HS. The new gears made quite a difference! I also backed down the collective and she hovers very nicely at +4 degrees. These spin blades are very responsive, so I moved the control balls 1 hole closer to the servo arm center to soften up the head. I flew her today with all of the new changes and was very pleased with the flight characteristics. She flew very well and hovered basically hands off (slight breeze today).
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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06-16-2013 12:26 AM  4 years agoPost 59
stunt4fun

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So Cal - usa

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Ready for details and paint?

Ken

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07-11-2013 01:46 AM  4 years agoPost 60
Mojave

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Palos Verdes, Ca. USA

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Hi Ken, yes I just put over 1000 rivets on her this past weekend. I finally decided on a paint scheme, it's N130RU from New York's Port Authority. Here's a pic:
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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HelicopterScale Model RC Helicopters Docs  MC 700 size AS350
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