I will be receiving my FLASH in a couple weeks. I will be using a P80 in it and was told by the rep that I didn't really need the wing tank! Sounds like I do need it to serve as a giant UAT in order to avoid the problem with the fuselage tank not emptying completely.

I am installing the Jet 1A trailing links on a BVM Bobcat to try to stop using so many of the breakaway plates! Even with gentle landings in grass they will eventually break. Do you think I should also be installing this gear in the FLASH?

for the gear is your choice ,Behotec makes good quality gears.
dont know the material but our aloy is 7075 quality therefore the same strenght as steel but as light as aloy!
i was just always been fed up with a not so smooth landings and spoiling my day.
the springs will provide the softness and security of your landings.to hard? get new springs thats it!.
the Jet-1a where designed from the ground up and are completely different then the behotec one,s.
also ours is a drop in and there is no need to flatten pins or cut them in lenghts.
the problem with flattening the pins yourself is that if you dont have a lathe , you wont get it 100% flat or strait in one line
therefore they will always start to travel to one side or losen up after a while.
i dont understand why they dont deliver them standard flattened if they are special designed for it.
i have made the jet-1a gear fitted for the Flash and as we speak they are being made for the flash.
you can have also the choice later to select the 76mm wheels or the 88,s
i think the 88,s are a overkill but good for grass , the 76 are better for paved runways , but then the 88,s look cooler but are more expensive.
as for the size of the trailing oleo,s check our site for correct lengths.
we also stock them now in us sizes (1/2 inch).

Yes I know the Behotec is ok Quality wise but the mains are not the trailing link type gear. At least not in there pictures. I haven't received them yet!

Our grass field is not like a golf putting green so it has small clumps of grass here and there and these are rough on a straight type oleo strut! The pressure is applied front to back when taking off and landing not up and down against the springs. I'm hoping the Jet 1As I am putting in my Bobcat will stop this problem!

Sandor

No! the wing tank is the final tank!
Fuselage tank feeds the UAT

Regards

Dave

My white Flash has shipped and I can't wait to get started on it, I got the Behotec gear Hopefully it will be durable since I fly off of grass. My only problem is , I am having trouble deciding on either a P-70 or a P120. I have heard the 120 is really kind of overkill, will the 70 provide speeds in the 190-200 mph range? I cant see putting the P-80 in, since its about the same weight as the 120. With a P-70 I could use the wing tank as a smoke tank. Any sugestions welcome, Jack.

ok that explains why you dont have many problems then.
im think for the fuselage tanks as a single tank .
you can use only use about 70% of the fuel before foamy fuel starts filling the uat.
but can be solved.
since you empty the wing tank first , then the main tank fuselage you would have no problems.
good solved.

so gary at jet-tech has a job to do then.
he makes nice tanks.. the only bit i ever used you can see on the last picture i posted where the refurbisched flash tank
has a part of a eurosport jet-tech tank

Hi Jack!

Your right: If you look at the weight, there is no reason to use a P-80, but it is a reliable engine and good value. About the cheapest engine they sell at JC, that makes it interesting if money does matter
I have seen the heavier prototypes flying and I am sure you will be happy with the P-70. It might be interesting to have a close look at Sandors mods to get it as light as possible. The lighter the better, cause it will keep the stress to the airframe to a minimum, especially on rough grass-strips.

Sandor: Now I got it. You were refferring to Dave's model with all the standard parts. Man, that would be a Bandit-killer with your mods and a 120 in it . Time for a few "Sorry Bob!" stickers How much does that Fadec weight? Would be nice to know, I have never had one on my scale....

As to your knife-edge "problem": Even almost every pattern plane needs some mixing for perfect knife-edge flights. If you break your test-pilots thumbs, he might have the right stick-positions for knif-edge flights without any electronical mixing. We use a big hammer as a human-mixing-device. I can send it to you for your next test-flights

David

lets put it this way , "if you dont like them we want them back!"
please email (not thru this forum please) me the lenght from the beginning of the strut until the middle of the axle
you can find us thru my webpage.
also i need to know your pickup size in mm please

the ecu weights 30 gram incl sticker!

and it does not blow up with normal valves
just with a few chinese one,s where the current goes over 5 amps


Knife edge: well you could be right no idea.

as for bandit i am almost sure that someone had a close peep to some of its profiles and looks.
it sure is fast as one.

you right about the turbine
if you want lots of stuff for the buck go for a JC p-80.
i have to admit that even i could sell you one, since i deal graupner.
however i am glad Als hobbies has taken over the JC p-80 sales or market .............

if you want to go for strenght , weight , funfactor , quality
go for the one i have builded a bit more expensive but 100% fun.
we also went for the cheaper Hitec servo,s the HS 5945 MG
where my choice , they work fine on all
and saves you a load on jr,s

maybe with the price difference of the JR/graupner one,s and hitec
one could get a Wren Supersport for the difference.

Hi Sandor!

Great fix! Can you still get the tank out after the mod.?

See you at Jetpower

Got my Flash (Blue Angels) today! Very pleased!!

This is my first Comp-ARF kit and after a very close inspection all over I'm impressed. This bodes well for my Eurosport/ fighter purchase early next year! Got the Behotec gear and just about all the gubbins to go inside. Will start building soon!

Interested to see how this thread develops as we all start building!

Looking forward to watching Dave W's Flash flying at the Nat's this weekend!

Chris

Sandor

Found your level now Hitec servos...oh my god.

The point is with this aeroplane that almost 95% of my orders for this aeroplane people already have an engine ready hence it's great that a P60 through to turned down P160 will fit and work really well.

This aeroplane is not as quick as a Bandit-

D

Great reading guys! Congratulations Chris! I got my C36-2 gear today. Can anyone comment on using their system? Looks like high quality stuff is there anything I need to look out for?

JOe

you tell them what they want to hear
i tell them what i do...

there is nothing wrong with the new generation of hitecs Dave...[8D]
as long you respect the voltage to them without blowing them up all is fine.
i remember also a time where these hitec blew up by just looking at them.
but these new generation of servo,s is fine.
i lost a mb-339 once due to Graupner servo,s recomended for that earoplane.
it is the same as graupner sold a mb-339 that as of today i never see someone actualy flying it.
nor did Champ or you on jetpower 2004....
would you give me warranty and by me a new one then?[].
bit more respect , i helped you once but it will not happen again..[:-]
p-160 derated? that is called a Titan isnt it?

here is the video of the Flash

and some more pictures

pilot is Koen achten who i know from the pampa,s , he flew our Boomerang this year on sunday.
just 18 years out , but outfly,s most of us.
he sure had his fun!


video is here: http://www.youtube.com/watch?v=QA_qEgznLhc

mm no i cant get it out
well i just have to remove part of the intakes later then you can mount the tanks from the back.
this was just a 30 minutes job.

Sandor

Congrats. on two very good flights! The Flash certainly is not underpowered with the SS, vertical performance looked to be excellent.
The Jet 1A oleos looked to work very well on grass, I can see I have made the correct decision to order a set!

Your young pilot appears to be very skilled, a very smooth performance, he was rolling back and forth so fast I could hardly follow the model.

Best regards

John

Thanks john
it is indeed not underpowered at all with the SS , i have thought about putting in a Graupner Jetcat P-60 but i strongly believe one would need a lot of runway on grass and will be underpowered.
it is and i stronlgy believe this the perfect choice for a moderate flyer.
with a ulysses 140 from us it will outfly anything in the 118mm size , but then it will be a heavy bird , with some thust residue.
and for me personaly a tricky one to land with a short runway.
it is not that i am only dedicated to Wren but there is no one else with this power to weight ratio that comes close.
also keep in mind the exhaust velocity is much higher therefor you can see in the video that the start was moderate/quick
but as soon it was flying you could see the speed building up fast.
with the Wren we had vertical until we could almost not see it anymore.

The oleo,s work indeed very well , i am using the heavy springs now that are normaly for the Boomerang XL.
you can see it really but when passing us we could see the knees bending a few cm while taking off.
maybe i will exchange them to a lighter version.
the frontt spring we changed to a softer one , and works perfect.
i think as service we will put a set of 3 springs for free for real bad gras strips.
so that people can make a choice in what to use.
the field at the pampa,s is covered with rabbit holes at the moment , still you cant see the flash bounce for one minute.

yes he is a good pilot , and he will be flying for us at the jetpower meeting 2006.
i know he is really looking forward to that , and he can meet some of his fellow pilots .

You can read my mind , Sandor !!

I thought a Titan had the same size as the p-120, but it has more thrust...

Sandor. I can only get 58 seconds of your video to play??

Regards Jim

Played fine for me, both flights!

Great!!

Chris

Got it sorted now. It was a corrupted download, cured by purging my temporary internet files & downloading again.

Regards

Jim

Sir, Looks like you screwed on the canopy. Glue will work? The canopy, as delivered had no lines , for cutting. I cut mine and it happened to be short , as it would not reach the canopy band! Cut off the band and it looks like a Bandit? What do you think. WHMC

for the canopy:

i put the canopy over the frame , drawed a line where to cut.
then cutted 1/2 centimet shorter and it fitted.

i did not use glue in the beginning because of the not so perfect fit of the canopy glass.