rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 320 ONLINE 25 EVENTS SEARCH REGISTER  START HERE
 
7 pages [ <<    <     5      6     ( 7 )    >    >> ]3012 viewsPOST REPLY
Midland Helicopters . HeliProz . ZoomsHobbies

.
.
Gasser Model RC Helicopters > Spectra Kit arrived
 
 
rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

Fixit

Yes the website address you have is correct. Enough people know it now so if someone asks I'm sure someone else will let them know. Otherwise feel free to PM me and I can let you know anything you need to know via PM.

pgkevet:

Don't sweat it, put it where I have mine. The only stipulation is make sure its far enough away from the hump so you can turn the 90 angle around to tighten it. My first attempt it was close and the nipple from the 90 part was bumping into the hump. You'll need to get an OS spanner and bend it so you can put it into the mouth of the tank to hold the pickup line end while you spin the 90 bend piece around from the outside to tighten. Give enough line so the clunk will rest towards the rear, and be able to flop around without getting stuck on the rear walls.

-=>Raja.

1005 Xcell Gas, BHH G26 3D Plus, Jewel Generator
Spectra-g, BHH G26 3D Plus, Jewel Generator
06-23-2008 11:25 PM
 
 
Fixit
Key Veteran
Location: UK

You could say this is cheating but I’ve used the outlet from a nitro tank and installed it on gasser tanks before for the return and it saves all the bent spanner malarkey.
Yes its rubber but I haven’t had any problems with it in 12 months and the tank is never empty even when stored for weeks.


If you use the metal outlets I use a thin gas welding rod with a 20mm bend at the end, slid your fitting on the rod then go through the main hole and out through the (tight) hole you made for the fitting, when the nuts on the outside and nipped if you pull up on the rod you can normally get it tight without the need for a spanner on the inside.

PS, I have also used the nylon cord from a strimer with a knot in the end as a pull through.
06-23-2008 11:57 PM
HOMEPAGE  
 
 
pgkevet
Veteran
Location: surrey UK

..thanks for the ideas.. with the Preddie tank I used curved haemostats to manipulate the fittings and then to keep them pulled up tight while screwing down.. worked there..

pgk
06-24-2008 01:02 AM
 
 
Fixit
Key Veteran
Location: UK

Quote 
used curved haemostats to manipulate the fittings

I had to look haemostats up before I could understand it, do you mean some sort of forceps doctor
06-24-2008 01:51 PM
HOMEPAGE  
 
 
pgkevet
Veteran
Location: surrey UK

Quote 
I had to look haemostats up before I could understand it, do you mean some sort of forceps doctor

...the sin of writing bilingually for the wrong side of the pond..but then again 8" Rochester-Pean's wouldn't have meant much either..and I'm a 'mister'

pgk
06-24-2008 03:26 PM
 
 
pgkevet
Veteran
Location: surrey UK

Build thread update

I don't know how you guys build so fast

I decided to remove the flybar and check it.. just cautious after the preddie incident abuot future repairs. I'm pleased I did becasue it was a nightmare to get out. For those that need a refresher then one side of my heli the flybar support was too tight and I had to sand the flybar down to get it in. It finally went in easily but then I remembered that I'd really only sanded one half down.. and how do you remember which half!

So after much tapping and twisting it finally came out and got slicked down to a smooth easy fitting any which way (and loose)

The dubro tank next..I managed to get the two top fittings drilled slightly close.. couldn't get the washers underneath side by side.. so left them off - no choice apart from a new tank... but I've tested it with plugs and pressurised with 2-stroke mix and no leaks. Fitting it is easy enough.

Wiring .. I think I spent the best part of 6 hrs deciding how to place stuff and how to have it tidy. Pending my newly ordered Jewel (what the hey.. I'm so far into spending on this hobby and disasters that I've stopped counting now..) I pulled stuff off the preddie wreck and got on..Regulator on the baseplate in front of engine allows me to put it's switch and indicators behind the engine by the pull start.. for a change it'll be accesible easily with canopy .

The rx in standard positon and I've got the futaba 2.4 aerials slipped inside plastic drinking straws... one horizontal along the top edge of the elctronics bay and the other vertically down the front.

Most of the servo wires are sheathed in servo braid just near the servo part where there may be any carbon edges. The wires are then just shoved in a bundle in the frame.. but where they route out towards the rx I've edged the carbon with stickyback loop tape. Its available here off the roll and the loop part is soft.. and sticks like guilt.. so I've cut bits and lipped any dodgy edges.

Zeal tape for the gyro - and the amplifier and the rx are held with sticky-back hook and loop tape and then a cable tie as well. The hook and loop not only stops any slippage but acts as padding... and allows one to mess about with position until happy.

I do think the Preddie was easier to access wiring and very few edges to worry about. His tray wasn't big enough without a DIY extra so on those grounds I'm awarding even points here.

I'm on duty tomorrow so it depends how busy stuff is as to whether I can finally get the servo wheels on, make up the links and finish off or not..

pgk
06-29-2008 01:12 AM
 
 
pgkevet
Veteran
Location: surrey UK

Build thread - not again!

Well I had soem time free. I'm obviously slower than you lot..patiently fiddled and adjusted servo wheels for best alignment, checked all the movements correct - you know the drill..it just takes me longer..started making up links.. everything looking good.. made up the bell cranks to swash links and switched back on to check (again) that swash movement correct..whereupon one brand new 9252 promptly stripped its gears.. there was no binding anywhere and it had been fine unloaded.

I suppose i should be grateful it happened on the ground during a build - but was close to tossing the lot. Spare gear sets happen to be in delayed post anyway.. but if I can face it I'll pull one off Preddie.

...but frankly can't face that today..it's not a good omen for rushing to a maiden tomorrow..that'll probably have to wait until the end of the week now with other work commitments.

If it goes on like this...

pgk
06-29-2008 07:40 PM
 
 
pgkevet
Veteran
Location: surrey UK

Build thread - finished

agian I;m jealous of you guys that seem to slap a kit together and have it right and betetr than mine with the longhaul..

So links done and the usual setting up. For me the preadtor manual measurements worked absolutely.. hardly any changes needed for the recommended pitch range. On the Spectra I had to fiddle a bit.. hardly an issue but there ya go. There was no room to slip a swash level in without removing the head..and with that off it's more accurate to tape an allen-key to the shaft for perfection than use a level.

The canopy occupied me.. lots of care in marking out and trimming it. I don't have airbrushes and know I'd make a mess with spraycans so it's plain with stickers and if it stays in the sir then I'll buy it a nice canopy sometime. My only issue here was that the front canopy standoffs aren't long enough and gently flexing the canopy inwards and it split on the bottom seam. Preddie wins outright here.. while his canopy doesn't wrap as far back it fits perfectly and the only trimming is the windscreen.. its' stronger too but doesn't survive a 100 foot fall!

Stcok skids put the spectra lower to the ground so access to the pull start may be harder.

Spectra pitch range is huge.. way more than one could use. I fiddled it to +/- 10.5deg with ccpm set at 50%

Things to note

None of this really matters! It's all purely personal whether you like building and like fiddling or not. For the dedicated modeller then high parts counts and difficult fittings are part of the fun.

For me - I want to fly them. OK I'm a beginner and got lots to learn. Set-up is a necessity to undertsanding and flight and flight characetristics. Mechanics matter and it's easy to appreciate the superior engineering of the Spectra

- but step back dispassionately and you ought to agree that good design combines simplicity and easy service and reliability. Popularity depends on making these things attractive and handleable by the mainstream user. Neither heli does this well and then risks being a niche interest.. which is a shame.

I think gsssers have way more going for them than most heli fliers appreciate but they need to lose that exclusive and expensive to buy image.

I'm too much the novice to make fair comments about how they will fly -bjt novice comments will have a value in their own right.

My next challenges are tweaking and fiddling these things..I know it''s ging to take me a while to finalise settings.

Lastly

I'm going to crash. Its inevitable. whether it's a mechancial issue that a better piot would cope with or a dumb-thumb move. None of you know me but I do work hard at this.. sim, then practice new move on the 450 then when right on the 600 and then the idea was on the gassers - and on windier days reinforce competent moves on the gassers. A hard to fix heli makes one cautious. It also risks one not trying. I didn't buy and build these to hover for 10 mins on a warm sunday.

Which gasser will I fly most? I have no idea but I don't fancy mending the Spectra so it's more likely to be used waiting for Preddie parts or for relaxing flying..

pgk
07-01-2008 10:57 PM
 
 
Fixit
Key Veteran
Location: UK

Well done with both the builds, it’s been a long haul but very rewarding I’m sure.
I think the Mister Doctor would recommend some relaxing flying for a while.
07-02-2008 12:09 AM
HOMEPAGE  
 
 
rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

You ready for some advice?

As far as the "I'm going to crash bit", sure you are, but you can minimize your chances or damage by not flying new moves with your gassers. Nobody is asking you to have hover sessions with them, you do know how to fly around a bit I would assume. Fly what you know how to do with the gassers, and save the new stuff for your 450. This way you'll eliminate the dumb thumbs crash on the gassers, and spend more time enjoying them than getting fed up fixing big machines. How do you think I managed 500 flights with my Spectra-g without dumb thumbing it while learning some new moves this year? Its called trex 450!

Just a thought, and good work on the builds!

By the way, as far as the canopy studs, did you put the long ones in the front and the shorter ones in the back? The long ones are wider on the edges and like a cylinder in the middle (new in the kit now).

-=>Raja.

1005 Xcell Gas, BHH G26 3D Plus, Jewel Generator
Spectra-g, BHH G26 3D Plus, Jewel Generator
07-02-2008 01:14 AM
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

Or, fly higher. I don't crash very often, and it's not because I'm great, it's because I don't do things on the deck. The gassers are bigger and easier to see, so I fly them higher than my 50, which I fly higher than my 450. I was doing backwards rolls with my Spectra today, something I've done very few times, so I was getting the timing and inputs down, and it never came within 100ft of the ground while doing it. I lost it a couple of times, but at that altitude, there's plenty of time to correct and save it.


Nick Crego
Back off man, I'm a scientist.
07-02-2008 01:21 AM
 
 
pgkevet
Veteran
Location: surrey UK

thanks guys,

I am doing all of that...sim, 450 etc, flying higher - hence the heavy preddie impact when the servo plug came out..and yes I put the canopy studs in correctly..any shorter on the back and canopy would be binding onto the main gear.

My novice flying level is circuits, loops and rolls and multiple turn stalls. The most I pushed Preddie to was stall turns and piros, climbouts and fast, wide circuits - trying to get a feel for the mass and inertia.

Resolving bizzare attitudes, deliberate autos and coping with in-flight failures is a way off yet..

pgk
07-02-2008 07:30 AM
 
 
7 pages [ <<    <     5      6     ( 7 )    >    >> ]3012 viewsPOST REPLY
HeliHobby . Ron’s HeliProz South . Century Helicopter

.
.
Gasser Model RC Helicopters > Spectra Kit arrived
  UPDATE SCREEN   PRINT TOPIC Advertisers 

Subscribe to This Topic

Tuesday, October 14 - 10:19 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie