There is plenty of rad in the RadJet-800! With it's amazing price, EPO foam and being Plug and Fly, this brilliant model has no trouble earning the RadJet moniker.
The Radjet 800 has been tested and flown to within an inch of it's life and it performed flawlessly, not only in terms of light performance but also reliability and believe me, we tried hard to kill the test version! It's a simple build with the motor, ESC an servo's pre-installed, even the decals are pre-applied! It has several impressively simple and practical features such as the plastic skid on the length of the underside of the fuselage that will protect your Radjet from the usual tears and gouges, servo arm protectors on the wings, effective cooling for the ESC & Lipoly and so on.....and it's how much?
But, it doesn't stop there, oh no! What's it like to fly? Utterly brilliant! The light flying weight means that the outrunner motor gives tons of performance, the Radjet will pull massive loops and is capable of some pretty precise aerobatics, it's quick, no doubt about it but throttle back and it becomes a total pussycat, fly it like you stole it or glide around, either way it's a hoot! So to sum up, it looks great, it's easy to assemble, flies brilliantly, is reliable, fast and cheap....Radjet? You better believe it!
I have owned my Rad Jet for six months , I was driven to buy
it by it,s good looks throw in the boot size & it,s write up..
When it arrived the Jet was so easy to put together it was ready to go in 40 min .
After trimming out (C/G is wrong on plan) . I soon discoverd that the jet was a joy to fly , Fast low passes big curves and loops , rolls ect .
Pound for pound it,s got to be the best buy around !
I'm sorry Piers but your mistaken I run mine on stock setup with a 3s 2200 25c lipo and its fine just requires cutting a bit of the fusslarge for it to sit far enough back for weight distribution with the cg (which is wrong in the manual by the way) it's 395-400mm from nose tip back, it works out to around the finger holes I lined mine up using the two dots on the underneath of the wings (one on each side) and using a ruler marked a line in each finger hole. Or you could make a jig to rest the two decel dots to rest on. The cg is pretty important to get rite.
I personally use 5 min epoxy
But because the sides are smooth
I stab each surface i wish to bond with a star screwdriver a couple of stabs at a angle, This allows the glue to fill the holes and makes anchor points on a smooth surface.
Thats a top tip for any epo model
The answer for this will vary because everyone has there preferred method lol. For me I like to use shoe goop or a hot glue gun reason being is its a very good bond but flexible and shock absorbent so it will last longer than foam safe ca and epoxy
If you wet the side you're putting the Gorilla Glue on you only need a little remembering it will expand to fill the gaps as it sets, but up the edges and clamp (or pin for a repair). Produces a really strong bond with foam.
where is the cog on this plane?
what is the best prop to use with standard motor and esc? i am using a 1500 35c 3cell lipo.
im not bothered about stupidly fast cuz it is a fpv plane and i would like longer flight times and a cruise speed of 60 mph and a top speed of say 120mph
roflmao your not fussed about speed but want it to do top speed 120mph
1ST answer the prop that came with the jet
there is a spare it is the same size.
2ND I balance her just where the first wing join is at the nose end.
3RD i wouldnt put any fpv gear on her she,s too small and wont handle the weight turns and rolls will be well dodgy and you would have to add alot of weight to the back end.
Your not going to get anywhere near 120mph with stock set up. Think about a high watt motor around 2500kv a 50a esc and a 5x4.75 prop then you might get up around that sort of speed with a 4sell lipo
has any1 got measurements from the nose to the cog. ive measured it to the manual but jlaw says "balance her just where the first wing join is at the nose end" which is 120mm further forward than it recommends in the manual.
surely the manual cant be that far out??
im going to tame it right down for fpv - the fpv is small and light and will run off the balance lead of the main flight pack
Mine is balanced and flying perfectly with the cog around the middle to rear of the finger recesses on the underneath inline with the 2 dots on the underneath of the wing one on each side. Don't use the cog In the instructions it's wrong
I got my Radjet 3 weeks ago from HK UK Warehouse, quick 48hr delivery as stated. A quick and easy build, impressed with the quality considering the price. Had read so much about the center of gravity on different forums and on here, whereby the COG is wrong in the manual and it needs to be further back, so cut a bit of foam to enable the battery to be pushed back further so it is flush with the canopy opening. Put about three quarters of throttle on launch and it took to the sky very stable, just needed a bit of trim and it flew very well. Impressed with the speed on stock motor and prop, while using NanoTech 1300mah 25-50c lipo. Had dual rates on 85% and expo on 25% and flew very nice. Got to say it an excellent bit of kit for the money and great fun. Might just have to mod it now !
The turnigy 30 esc is wot i used works well
sold on Hobbyking website
this is not a advertisment to shop elsewhere
You reading before you remove my post for advertising hobbyking products on a product discusion form
( Go Figure ???? )
What you think you pay using GBP on HKing
GBP Hk Radjet with postage Uk/Whse £*42.65
Lets try Dollars
USD Hk Radjet with postage Uk/Whse $68.79
Lets use a google usd to gbp converter USD $68.79 to GBP 43.65 WOW I GAINED A POUND SOMEWHERE
Lets use Paypal Currency converter
-$68.79 USD (equals -£*45.10 GBP)
1 British Pound = 1.52540 US Dollars
So what you thought you was paying in the GBP HK Converter £*42.65
You are actually paying £*45.10
Plus he will have to pay for the add £*1.00
The £*5.00 for every one he sells
so for his £*55 mark up price he is making £*3.90
My point was he,s not making a fortune out of the deal. The hobbyking currency converter is well out of date. Some people dont like to use hobbyking and prefer ebay so he is providing a service to them, making a bit himslelf after ebay fee,s paypal fee,s and keeping Hobbyking popular models in circulation, I dont think Hobbyking mind what he does with the goods he buys as long as there being paid for when they leave the hk whse
Hi yes I bought 12 of them off eBay from china last summer just had a look and cannot find seller I will have a look through my feedback later to see if I can find him but have a look on eBay as I was looking through esc and brushless motors and came across the props ,I think the company was riccs aircraft os sim to that.
A nose heavy plane flies badly and a tail heavy one flies once!! Best advice is take it a little at a time with the C of G until you are happy. As for the throws, I would also take it easy to start with. Try travel on the servos of say 60% and 30% expo. These type of planes are built for straight line speed and wide jet like turns. When you are happy with how is behaves then you can turn things up a little at a time and set up D/Rates if you want.
Get the balance spot on ( couple of bolts and a washer ) and it flies like a dream c of g is exactly where it states in the manual im no expert flyer but i can throw the radjet round for fun rolls inverted skim off floor its all down to correct balance mate
I received my Radjet 800 from the UK warehouse in the post yesterday. From the included manual I see there is no advice on Throws, D/R or Expo etc. Can someone give me advice on this. Also, there is a lot of talk about the C of G in the manual being too far forward. Where should the C of G be please ?
Hi Budgie, I have the Radjet & I have the following settings for CoG & throws. CoG is approx 25 mm further back than the Manual suggests & my throws are 20M.M. total on elavator Max & likewise for aileron 30% Expo on both.I am using a Zippy 2200 Xthin 25c. When I had the stock motor in with this it was stable & not over fast, I now have upgraded to 277 watts motor on the same CoG & same Battery & is a grin from ear to ear flying experience 3/4 throttle verticle hand launches
Well it came next day delivery from uk site looked great once put together , 1st flight not enough power to get it into the air or not enough breeze and glided to ground quit gentle prop must have touched the ground and the bell motor shaft snapped so brined the motor ordered anther from hk just hope next outing it takes off , it just needed a better motor I think.
I hate to say it but it sounds as if the prop was on the wrong way round...common mistake, this plane will just fly out of your hand if set up correctly....make sure you have a few clicks of up elevator wise for the maiden and do NOT go with a forward C of G.
It means you will need to supply your own Radio which in turn must be minimum 4 channel and must have elevon mixing....it also mean you must supply your own battery to get it flying....which leads me to the next point...I am guessing you are maybe a newbie? If so....this plane is not for you.
I bought one of these from HK site, and despite box being battered, inside there was no damage at all. Unfortunately, gentle crash on first launch (not enough throttle I think) and motor shaft snapped at the bell, so had to bin it. Very surprised/disappointed. Replaced motor and now fly's great. I intend to FPV it, already done some on-board footage and it's great, youtube search fpvjersey for onboard footage.
Well packed, despite packaging being damaged, the contents were completely undamaged. Build is very easy (took longer for glue to dry than build) and used some fibre tape to protect leading edge. First launch resulted in a crash, and motor shaft snapped. Very disappointed! Had to cut out motor mount cover (not too hard) to replace motor. Now runs great, swinging a 6x4 prop. Have bought this to FPV. Have used with a keychain camera and it flew just fine. Glide is insane! Totally overshot first approach. Launches are a doddle so long as you use plenty of power. Onboard videos on my you tube channel fpvjersey
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Arrived quickly , built even quicker , balanced perfect with a 7 ch optima rec puched down the middle and a 3s 1300 pack as far back as possible , hand launch at full throttle and staying full for 5 mins uses 700mha , very stable in the current winds and a real blast to fly , cheap and I recon , brilliant . Have ordered a 4s 1300 nano pack to try next :)
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Arrived prompt with no damage went together like butter fitted carbon spar through wings for the extra stiffness cant wait for some fine weather to maiden it
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Ordered Thursday arrived Monday, well packaged and very easy to assemble. I have maidened it today and it flys great, it even handled about 15mph winds with relative ease. COG is about 15mm further back from what factory states so just remove a bit of foam (i use a hot knife) and push the battery back as far as possible. A good fun and easy plane to fly but not quite as fast as I expected. The internet states that stock esc can handle a 4cell 1300 and it goes like a rocket. Time to order some I think. Dont delay buy it today!!!! (when its in stock)
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Bought the kit version from Hong Kong depot and had for sometime while I modified. Now running Turnighy 2836-3700kv motor on 3s with 80 Amp T Plush ESC, 6x4.5 prop on a steel wing motor mount. AUW 0.6kg with 2200mAh battery. Pulls 750 Watts and boy does this baby shift! Does not look quite as sleek as the original but no one will see that - a real competitor for other brand larger versions. Will take 4s on this set up but 1200 Watts is the next step...