90mm VIPER JET from HOBBYKING - Page 6 - RC Groups
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Sep 30, 2011, 05:23 PM
Registered User
Gaz-b's Avatar
Quote:
Originally Posted by vettster
I have some guess work to be done. I think White glue should do just fine to hold the wings on
I thought elastic wing bands and hooks.
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Sep 30, 2011, 05:56 PM
Never fly an A model anything!
jayb1rdz's Avatar
I expect there is a decent spar and alignment stubs. On my little VJ, I just use tape in case I need to remove the wings.
I would be nice to have removable wings and a wiring loom for easy transport.
Sep 30, 2011, 05:57 PM
Never fly an A model anything!
jayb1rdz's Avatar
I'm off to the field. Ive gotta give these models a blast while the weather holds. J
Sep 30, 2011, 06:18 PM
MAAC SAVED RC!!
vettster's Avatar
Guys be serious for a moment. Im already in trouble because we paid very little for this model, and it didnt come with instructions.

Whats the right configuration????
Sep 30, 2011, 06:22 PM
Registered User
Gaz-b's Avatar
the black and white trim goes on the bottom
Sep 30, 2011, 06:31 PM
its TALON TIME!
corsair nut's Avatar
damn i want one...oh wait...i said that already....a few times! :O

too bad it will be like 5 years before they are back in stock...
Sep 30, 2011, 06:43 PM
Life begins at transition
The second config looks fast!

How much room is there inside once the fan's in? I'm hoping more than the HET SS90... That thing was a PITA to work on
Sep 30, 2011, 07:30 PM
MAAC SAVED RC!!
vettster's Avatar
Ill look into that for ya Odysis. But right now im wiped. We just started building 3 out of 9 new subway stations here in Toronto and Im the only welder taking care of and maintaining 12 drill rigs.

I got as far as gluing the control surfaces on and prepping the wing tip(just because they were there) and thats it. Youll need to remove the covering on the Wings tips to expose the balsa for a good bond.

Youll notice with the wing tips, I drill several holes to allow the 30min poxy(I mean White Glue) to seep in and get a better hold. Ill do this to all mating surfaces.

For the elevators, Ill be using the BlueBird High torque MG servos(BMS-555-DMG) I had in the 70mm Viper. The ailerons and rudder will be getting HS85MG as thats what I have on hand.
Last edited by vettster; Sep 30, 2011 at 07:36 PM.
Sep 30, 2011, 07:52 PM
MAAC SAVED RC!!
vettster's Avatar
Guys.. I just cant bring myself to go with Gear. I hate the idea of adding the extra weight. Plus! since I fly mainly off of sod, its very difficult to get small wheeled AC into the air. I watched a buddy of mine, try to get his BVM Electra with 10s in the air a month ago, and he couldnt do it. So Im going to have to place an order for some more bungee cord. I think what Ill do for safety sake, is to double up the bungee cords.

I use Threra-Band instead of surgical tubing. Its 1/3 the cost and doesnt snap in cold weather. Far superior in my opinion. It comes in diffrent colors, that designate the strength. Im using Black. http://www.thera-band.com/store/prod...p?ProductID=27
I think two black length should be able to handle near 50lbs of pull illl require.

Trev
Sep 30, 2011, 07:54 PM
Fly now crash later
davecrash's Avatar
NO Trevor, Come to the dark side.
Oct 01, 2011, 02:54 AM
Registered User
Gaz-b's Avatar
The red and blue look like what HK sell
Oct 01, 2011, 03:11 AM
jofro
Quote:
Originally Posted by vettster
Guys.. I just cant bring myself to go with Gear. I hate the idea of adding the extra weight. Plus! since I fly mainly off of sod, its very difficult to get small wheeled AC into the air. I watched a buddy of mine, try to get his BVM Electra with 10s in the air a month ago, and he couldnt do it. So Im going to have to place an order for some more bungee cord. I think what Ill do for safety sake, is to double up the bungee cords.

I use Threra-Band instead of surgical tubing. Its 1/3 the cost and doesnt snap in cold weather. Far superior in my opinion. It comes in diffrent colors, that designate the strength. Im using Black. http://www.thera-band.com/store/prod...p?ProductID=27
I think two black length should be able to handle near 50lbs of pull illl require.

Trev
Trev, I don't like to be negative but I think that if you fit good quality retracts, heavy RC Lander unit and 10 or 12S it won't be a nice brick to fly but more like a flying concrete block, but I still love the way it shines, Joe.
Oct 01, 2011, 07:43 AM
Registered User
pogoed's Avatar
Trevor, how're you doing man?- I like your jet! As regards retracts, you could always install some but still bungee launch from that sod, or only fit them for fields with short grass or pavement (Ottawa, Burlington, TEMAC etc.) That's how I built that ill-fated Banshee- the wing tanks mounted where the main gear went, for belly landing. Just something to think about...
As my throwing shoulder is falling apart I've been bungeeing the Sabre for a few months now and 18# stretch is more than enough to put it in the air right now. (It's around 7.5 lbs., and I use the black theraband Bob picked up with your info.) So I don't know if this 5 to 1 stretch thing is necessary- to me it's not. The tubing is doubled up and no ramp is used, BTW. That amount of stretch was also more than adequate for the Banshee too, at 8 lbs.
Anyway, have fun Trev!
Tom
Oct 01, 2011, 08:51 AM
Aka: Tom Jenkins
ApexAero's Avatar
Vettster! Ever use JB weld on assembly? (Special areas) The best part for me is I can tell where it is and where to clean up! Plus it a dark color and sharpens seam lines visually when wanted. Doesn't drip.....
Oct 01, 2011, 09:17 AM
MAAC SAVED RC!!
vettster's Avatar
Quote:
Originally Posted by pogoed
Trevor, how're you doing man?- I like your jet! As regards retracts, you could always install some but still bungee launch from that sod, or only fit them for fields with short grass or pavement (Ottawa, Burlington, TEMAC etc.) That's how I built that ill-fated Banshee- the wing tanks mounted where the main gear went, for belly landing. Just something to think about...
As my throwing shoulder is falling apart I've been bungeeing the Sabre for a few months now and 18# stretch is more than enough to put it in the air right now. (It's around 7.5 lbs., and I use the black theraband Bob picked up with your info.) So I don't know if this 5 to 1 stretch thing is necessary- to me it's not. The tubing is doubled up and no ramp is used, BTW. That amount of stretch was also more than adequate for the Banshee too, at 8 lbs.
Anyway, have fun Trev!
Tom
Hey Tom! Good to hear from you.
I just dont like to add the extra weight. I really dont travel to many other clubs that have short enough grass to even use the gear. Bungee is the way to go. Good to hear you doubled up the bungee.

Quote:
Originally Posted by ApexAero
Vettster! Ever use JB weld on assembly? (Special areas) The best part for me is I can tell where it is and where to clean up! Plus it a dark color and sharpens seam lines visually when wanted. Doesn't drip.....
I have not... but Im willing to try. Anything has to be better than that messy goop as you mentioned. Like you say. It must leave a very clean edge and fill larger cavities with ease. Have you built many plane with it? My only concern is, that it dries very brittle doesnt it? Is there a perticular type you are useing. You mentioned (special areas) so do you still use 30min poxy for the wing roots. Im concidering useing Hysol on the wing roots this time. any thoughts..

Thanks for the Tip!

Trevor
Last edited by vettster; Oct 01, 2011 at 09:26 AM.


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