RunRyder RC
WATCH
 4 pages [ <<    <     1      2     ( 3 )     4     NEXT    >> ] 5903 views POST REPLY
HomeScaleAircraftScale HeliScale Helicopter Main Discussion Docs  Early Vario Long Ranger
06-14-2013 04:57 PM  5 years agoPost 41
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

My Posts: All  Forum  Topic

It will fly better and have the correct hover attitude that way too... Glad the info helped you out.
Barry

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

PM  EMAIL  GALLERY  Attn:RR  Quote
06-15-2013 02:15 PM  5 years agoPost 42
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Setting mechs in Fuse
Yesterday one of the carpenters at a company i contract to made a nice ply base plate for me to sit the mechs on and once epoxied in it will make a good strong point for both the landing skids and the mechs, (i will be adding bulkheads later but for now i need to get the mechanics done). As the stratus carbon base has lots of cap head screws which protrude, i marked and drilled through the ply so the mechs sit flush. It needs cleaning up fuel proofing etc but for now it will suffice.

This morning came into work and cleaned off the excess fiberglass,

Dropped the ply base and mechs in, lined everything up to get somewhere near a good forward lean angle on the main shaft(no idea why RR inverted the Image), was a bit shocked to find that it sat at a perfect angle. Difficult to see in the image, but it looks good.

So then had a look down the boom to see if i could maybe get away with using an extended boom and torque tube as this will make the build a whole lot easier. Joined two erm crashed ones together once i had pulled them true in a vice. Well it looks good to me, so i think the plan will be to make a bulk head at the very end of the tail run the tube through it and set the Tail gearbox on the end of the boom.

Well it will have to stop there until i get an extended boom and torque tube. I don't want to set everything then find out something's wrong.
Been looking at colour schemes, i kinda like this one.
http://www.airliners.net/photo/Bell...3517ef27bbf8301

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-15-2013 02:38 PM  5 years agoPost 43
G-Limo

rrApprentice

Europe

My Posts: All  Forum  Topic

Fixing the boom..
I would not be tempted to fix the boom at both ends of the model.. As the mechanics boom will flex while running as will the Fuz boom, somewhere down the line, one end of the Fuz will crack.

You should make a profile (in 2 places) at thge end of the boom and use a length of EP Foam (polyurethane). It should be 3 to 4" long and a snug fit in the Fuz. Cut a hole in this foam to take the boom and a thin walled tube to give clearance to the tail pitch push rod.

Use a hot nichrome wire driven from car battery to cut the profile of the foam using the 2 guides you have already cut.

The Tail gearbox is then fixed to the mechanical tail boom and the Vertical fin is fixed to the Fuz boom...

Your choice of colour for the machine may not be easy to orientate on a dull day..

Compared to this for example..

http://www.airliners.net/photo/Bell...11bb085b3495b97

/DG

PM  EMAIL  Attn:RR  Quote
06-15-2013 02:40 PM  5 years agoPost 44
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

Be careful when using building construction plywood, it does not have the structural strength of the muli laminated spruce model ply
Make sure you seal all the exposed cuts as it will wick up any moisture, fuel, any thing liquid, epoxy is god for sealing

As it is a Vario product why not buy the correct boom with bearings and shaft, if you try and join 2 bits together and you get it slightly wrong you will end up with a tail vibration you will never cure

It is starting to come together
Good luck
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
06-15-2013 03:04 PM  5 years agoPost 45
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Limo - thanks for the heads up on that, i'll do as you say and make a soft bearing for the boom to sit in against the fuse, i was always going to fit the tail box to the mechanics boom. But thanks, that could have cost me dearly.
Actually i like your colour scheme way better and your right better for orientation.

Peter - I'm not joining two pieces together, this was only a bench test, i'm going to order a long length of tube and cut it to size and the same for the torque tube. It just makes life so much easier to stick to MA.
The ply is so thin i think i would be lucky to get many more laminates in, but i'll have a look. Its an easy thing to make as i have a spare stratus carbon base for the template, that's the one beauty of flying only MA, i have loads of spares about, it saves me a load of time.
The plan was to cover the whole ply base plate with a think layer of epoxy which should keep the fuel out or should i go with fuel proofing first?
But again Peter thanks for your input greatly appreciated

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-15-2013 03:32 PM  5 years agoPost 46
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

beauty of flying only MA
I have a fleet of MA, also boxes of spares and usable bits from crash's even a PRO 2K brand new in box, with YS and exhaust
the whole package is looking for someone interested
You sound like the man
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
06-15-2013 04:31 PM  5 years agoPost 47
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

I may well be , once i finish this build i'll talk to you more about that.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-15-2013 06:07 PM  5 years agoPost 48
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

My Posts: All  Forum  Topic

I would say that you nailed the mainshaft angle on the head, looks very good! I agree with these guys on the boom mounting in foam. It will absorb any vibration and is very easy to work with. MY marvelcraft AS350 has a tail boom bulkhead/saddle in the aft part of the boom and they want you to use a zip tie around the boom to lock it down to the saddle. I opted for a piece of foam above the boom tube to hold it snug in the saddle. This still allows it to move.
Barry

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

PM  EMAIL  GALLERY  Attn:RR  Quote
06-15-2013 10:58 PM  5 years agoPost 49
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Mojave - i think thats going to be the plan, i'll get some foam next week, i'll measure up the boom and get a 1.5 meter length and cut it to fit. Couple of weeks time i should get it in the air

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-16-2013 01:18 AM  5 years agoPost 50
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

My Posts: All  Forum  Topic

You really only need a small section of foam at the back of the boom, in front of the tail gear box. You'll have to cut a hole in the foam for the tail pitch control rod to pass through.
Barry

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

PM  EMAIL  GALLERY  Attn:RR  Quote
06-16-2013 08:14 AM  5 years agoPost 51
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

i'll get some foam next week,
If you buy spray foam from the DIY or hardware store, it will fill the space exactly
If you can mount everything and put a sleeve over the tail control rod, the foam will support this as well
Also worth remembering if you are going to install tail/fin lights get the wiring in at the same time
I think B&Q, have small cans
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
06-17-2013 10:02 AM  5 years agoPost 52
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Peter - I was thinking about doing that, but spraying into a sealy bag, so i can remove it and cut a section to make a pattern. I i'm going to grab some expanding foam today and give it a trial run.

I will order a 2M length of Tube for the boom, still working out how to do the torque tube.
1) I have a torque tube with 2 bearings fitted, but no pin in the dog bone ends, must be an early one. So will turn a stepped aluminium rod to fit up inside the TT and expoxy this to both sides, i'll slip a piece of brass thin wall tube over the whole thing and epoxy in place, i may even put a bearing over it.
2) Remove the ends from the Torque tube and bearings, order a carbon rod and fit everything back.

I think the latter is probably the way to go.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-17-2013 01:11 PM  5 years agoPost 53
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

spraying into a sealy bag,
mookie, The bag idea does not work well
Just spray the foam into the boom it will be a lot stronger stuck to the boom
Have fun, and don't spray too much foam

I have never liked the idea of just epoxied drives to tail drive shafts any heat and they let go
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
06-17-2013 04:04 PM  5 years agoPost 54
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Peter - I would rather not spray foam inside the fuse as its pretty messy, i do have the original bulkhead supplied in the kit, i think i might just make a foam sleeve from this.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-19-2013 03:52 PM  5 years agoPost 55
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

After messing around trying to get the correct aluminium tube for the boom, i decided to join two booms together and cut to length, i machined a sleeve and reamed it to the correct size to give a very tight fit. I tried it first on two old crashed ones to test the strength, the booms gave up before the join did, so i'm happy with the out come.
The next job is the Carbon Torque tube.
Once these parts are done i can get on with actually putting it together.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-19-2013 07:58 PM  5 years agoPost 56
G-Limo

rrApprentice

Europe

My Posts: All  Forum  Topic

Try the Vario Stainless torque tube.. You'll find it tougher and more forgiving of a Tail blade/ground strike than the carbon..

/DG

PM  EMAIL  Attn:RR  Quote
06-21-2013 10:14 AM  5 years agoPost 57
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

To be honest DG the torque tube on an MA is pretty strong, i have touched the tail once or twice, and it just kicked up the dirt, Stainless is weak and it does weigh some compared, and i have 3 here so am willing to try, thats not saying your wrong, i'll give it a go and will probably have to eat my words at some point.
Over this weekend i will install everything. I'll post some pics.

Sent off for a quote on the paint work too, i can feel an expensive couple of months coming on.

Oh if anyone has a tempest style head for sale, then give me a shout. i think it looks a bit closer to the LR head than the proper MA flybarless one does.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-21-2013 10:30 AM  5 years agoPost 58
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

if anyone has a tempest style head for sale,
Mal, Which one is the tempest head plastic or metal, I have both
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
06-21-2013 11:00 AM  5 years agoPost 59
mookie

rrApprentice

UK

My Posts: All  Forum  Topic

Peter - the tempest head is this one.

With out the flybar etc, i just use it as a flybarless one.

valve boy!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
06-21-2013 08:50 PM  5 years agoPost 60
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

the tempest head is this one.
Mal, Yes I have one of those, I will post photo of what is attached to it
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 4 pages [ <<    <     1      2     ( 3 )     4     NEXT    >> ] 5903 views POST REPLY
HomeScaleAircraftScale HeliScale Helicopter Main Discussion Docs  Early Vario Long Ranger
 Print TOPIC  Make Suggestion 

 9  Topic Subscribe

Saturday, November 17 - 2:28 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online