Anybody have any experience with this kit? Can it be converted to .18 toki glow? Just curious, its a sweet looking jet and the kit looks GREAT!!

Luis, most are being flown with the HW-609 fan you can see several threads over on rc groups just use the search tab.



Thanks,
Mark

Hi!

I'm a close personal friend of the guy who makes these kits and lemme tell 'ya, you'll never find a higher quality kit.

There's a long history on this aircraft, and I believe it was originally designed around a K&B 3.5cc engine / Kress RK-720 fan. John's done a lot of work revamping it for EDF. Depending on the details of the Toki you may have to make duct work for it, but that would be about it. I've actually got one that I'm planning on putting a K&B/720 back in to. (The airframe is largely done and half painted, but I've still got to finish the equipment installation details.)

What's the diameter of the Toki fan? If you like I could take a few pics of mine and show you what a semi finished one looks like...

Kevin,
Pictures of you project would be great. The toki is 98.5mm for the fan, the engine with the fan/shroud mounted is about 8 ounces according to a friends fish scale. the pipe cant weigh much more, maybe 12 ounces total weight on the power unit.. Heres a picture with the dimensions of the toki fan.

You plan on putting retracts on it?

Luis

Looks perfect for a small turbine like the Wren 44 or the simjet 700, if thats still around. What is the web site for this jet. I would be interested in getting one.

david

David-

I tried dropping the prototype SimJet 700 (when I had it here after Superman) in my Hawk just for a lark and it almost completely consumed the entire engine bay! Conclusion: Putting a SimJet 700/MW 44 in this Hawk would be like putting a SimJet 3000 into the FACET 1200 trainer- overkill is an understatement!

Based on the size and construction of this plane, I would say something the size of Ewald Schuster's "mini-me" would be more appropriate.

B1-

No retracts for me- I've built mine for cat launch/belly land as John intended. (Cat launches are a blast anyways...) I'll have a look at fitting the fan based on your measurements later, and see what I can do about pics tomorrow.

I bought one of these recently. I am very impressed with the quality and completeness of the kit. If the glass fuselage were dyed light green, It could pass for a Byron kit!

Thanks Kevin for checking that out for me. This jet will certainly be my next project here in a couple of weeks if that toki fits Looking foward to seeing them pictures!!

Luis

That's one sweet looking little plane!
Two things:
How much and where can you get one?
Myles

Jetset, They sell them at www.eam.net

If that plane is designed around the hw609 edf unit I dought that a Toki will fit. After looking at the post with the demensions of the toki. It looks like the O.D. on the toki is 98mm. If you want to convert a current EDF to a toki then look for a jet that uses the Midifan or any other 90mm EDF unit. I am not sure about the size of the hw609 edf unit but I do know that it is significantly smaller. Looking at the kit picture there does not seem to be much meat around the bulkhead that fan mounts to.

The 90mm EDF units put out about 4lbs of thrust at about 1000 watts. To get up to 1000 watts you need about 24 battery cells. The cells weight is in the range of 1.3-1.7 oz each. So with the toki putting out close to 3lbs of thrust and saving the weight of the batteries the plane should have good performance.

Just my $.02

Ted

TGoodwin, when I said most in EDF form were beiing used with the HW-609 that comes from over on the RC Groups with a few threads like this one:

http://www.rcgroups.com/forums/showt...&threadid=5100

Since it was orig designed for the Kress RK-720 on glow it should fit. but just all Depens on how much John modified the ducting for EDF flights. The HW-609 is a 3" e-power fan vs. 3.75" on the Toki.

The kit does look sweet....but I perfer balsa built birds myself

The HW-609 is basically slightly larger than a MF480 designed to accept larger motors. Don't forget about the new Kokam cells either. A few have ran them in parralel packs pulling 50amps with 20+ minutes without power drop off. They're expensive though. Right now though it's very possible to make an EDF with 20+ minute flight durations.
However like was said that ships just too small to mount a Toki unit in. You need a 90mm EDF kit for a conversion. Preferably built up because in order to get the CG right you going to have to mount the Toki unit more forward that the EDF which is typically closer to the rear to offset the battery weight. Anything is possible, but that is one of the smaller sized ships.

Hey Sig, you know after looking at some close up pictures on the EAM site that would be an awful small fit for the Toki. I wonder if John did a fuse for the RK-720 IC and another version for the e-power? Not much room is there?

Be interesting to see some pictures if KevinM can get them posted.


Fan on left is the HW-609 on Right is the Toki.

I've got the kit (and it's a great looking kit, by the way-even include styrene resin!) and there's easily enough room in it for the Kyosho fan (I got it before the Toki came around), however the ducting won't work as is.

The diameters are just too diferent. I was going to split the duct and add to it with a small strip of fiberglass down it's length. The thrust tube is area ruled, by the way and may be useable. The intakes would require a cheater hole, probably.

My impressions are that the kit is easily srtong, roomy and light enough. Anyone know how the Toki's getting tweaked to get near 3# thrust? Pipe length, fuel etc.?

Mark Turner from RT Models has had success in getting about 3# of thrust....I believe from cutting the pipe length...not sure how much or from where.

Luis

Chuck, I have 4 different toki fan units in testing. The latest run is at 2.97 # I have done several mods to this one the rotor was off slightly balance wise. But main improvements are in pipe adjustments. I cut off 3mm of the pipe and run another test this I have done several times so far. I'm using a homemade digital output scale riding on ball bearing runners to get a smooth operation.

I'm on 30% cool power helo fuel and have been using several other brands as well. Mainly I'm just trying to see what I can squeeze out power wise as I now handle the fan units and have several projects in mind from my own line of kits and an upcoming De Havilland Vampire I'd like to power it with.

Next step is to play around with several other pipes I have laying around. But IMHO I don't think it will get much more of a power increase. Be interested in any other people who have been doing their own testing as well.

Thanks,
Mark

I too know the designer/maker of this kit and he builds a first quality kit. I would have bought one for myself already but I have to darn many kits to build now. John is a first-rate kit maker and builder and a very nice guy.
Joe

Hi Luis,

Looks like I'm a bit late to say that the Toki won't really fit. John originally did his duct work on this plane wiht a Kyosho fan, which is 80mm. (Funny thing it fits so well, eh Chuck? ) Although there is only one kit, John has said that he could be coerced into "tweaking" the kit if someone has a specific request. (Note- tweaking, not redesign!) I've taken my photos with the K&B 3.5 in the foreground to provide some size comparison. I've got my white coat on the plane, but not yet had time to get the other colours on. (Story of a modeller's life!)

Here we are again with the hatches off. The hatches are designed to be rubber-banded in place from the inside. Quick, simple and light. (Oh yeah, cheap too!)

And here's the engine bay. There's just enough clearance for the head of the K&B, if I go that way. Not quite sure where I'll stick the fuel yet though. But I'll worry about that after I finish the paint. (I guess it's clear where my priorities lie!)


Myles,

The Hawk, as well as any of John's other kits can be purchased through Great Northern Models. (K&B engine not included!) List on the Hawk kit is $300 CDN. Note that US customers should make all inquiries through EAM.

Kevin,
Very interested in seeing how the plane works out for you. Keep us up to date on your engine/fan decisions and performance specs.

Luis

Will do!