Who wants to build a semi-scale all-wood micro hydro?

[JimClark]

Jeff Ross may have the graphics for that boat.

Sent from my Moto G (4) using Tapatalk

[Dr. Jet]

There are a lot of graphics people on the various RC dirt oval pages.

Jeff Ross may have the graphics for that boat.

Links??


Well, Mike McKnight finally contacted me and sent the graphics that he had been sitting on for weeks. I doubt he will ever do anything for me again, but that's OK; I'll never send him an order again, so it all works out.

[Dr. Jet]

While I'm waiting until after the first of the year to start the laser-cutting of the wood bits, I thought I'd share some old hardware ideas that may find a new home in the future. I built a couple of these little gear drives a while back; one with the mounting screws "horizontal" and one with them "vertical". I don't recall what happened to the horizontal one, It may have been sold off in a hull package a decade ago. Anyway, I was digging through some parts and found this one. I thought I'd look around and see if 2825 out-runners were still available in the 5000Kv range. Nope! I tried the horizontal one in my H&M Micro Shovel back in the day and it ran about the same as with the "spec" 2632 3000Kv motors (see last photo).

One of the reasons I built a gear drive is I was having an issue of torque lifting the left sponson out of the water on a long straightaway. With the prop and all that rotating mass going one direction the effect was pronounced in these little hulls. With the motor spinning one way, and the prop in the other it was reduced considerably.

I'm not keen on putting it in the Atlas as it will raise the CG a bit more than a direct drive, and I've already selected a power plant for it. It would be best suited for an application where the output shaft needs to be really low in the hull; lower than the radius of the motor. Additionally, it has a 1/8" shaft so a larger selection of couplers are available.

[cjs]

Good stuff here!

[Dr. Jet]

Good stuff here!

Thank you!

Years ago, I built a scaled-down version of Jay Turner's XS Cat. That was back in the NiCd days. In order to have a low-profile motor, I built a scaled-down version of a Hughey gearbox and ran 2 Speed 300 motors (5000Kv) on eight 800mah (AA sized) cells. The thing was wicked fast and stable in the straights, but because of all those heavy batteries so high up in the tunnel section, any cornering at over 10% power meant a barrel roll for certain. I sold the hull as I recall, but I kept the gear drive. This motor would be a drop in replacement for the Speed 300s and would make a potent 2S power system: https://www.ebay.com/itm/Leopard-Hob...EAAOSwjk9ZSeVw

Hmmmm........ Not ANOTHER new project!

[cjs]

I got into FE right before brushless... Hughey gear drives, RC-Hydros ESCs, Fast Electrics (Australia) neo brushed motors, BBY Oval Masters, etc, etc.

[Dr. Jet]

I know. You and I joined this site right about the same time. I still have a Graupner Key West with a Hughey gear drive in it. I did convert it to a Lehner basic 5300, but it was still 6 NiCds. I made my own watercooling block for the Schulze ESC, and a CF servo tray and ESC support. In the last photo (dated 1/28/06) you can see my yet unfinished BBY Micro Scat Cat as part of my fleet. There's a thread on it here in the Boat Building Talk forum that I started more than a decade ago and recently updated. I wonder if I did a thread on the KW. I'll have to go back and look.

Update: I checked and there is no KW build thread here. It might have been on RRR.

[Dr. Jet]

Hmmm.... I need to have a serious talk with myself about hijacking my own thread....

[JimClark]

Should I give you a warning?

Hmmm.... I need to have a serious talk with myself about hijacking my own thread....

[Dr. Jet]

Should I give you a warning?

I consider myself severely warned. I will get up from my chair and spank myself five times.

[Dr. Jet]

Atlas Update (About Time...)

Well, I could not find info on Jeff Ross, but I did find Callie Graphics in New Mexico. See https://callie-graphics.com/ She has been more than accommodating over the holidays, is very responsive to emails, AND... She has the Blue Blaster graphic on file. Furthermore, her rates are about 1/3 of Mike McKnight's for her more complex graphics. I will have both sets of graphics on hand shortly and I will give a quick review on quality versus price.

I'm looking forward to the Atlas build. I think it will be beyond fun and truly rewarding.

As I raise my glass of champagne this New Year's Eve, I give a toast to Trent Hare. A true visionary and unsung hero. Thanks for guiding me to be able "Think Small". The big stuff is cool indeed; but it's pricey, it's fast, it's cookie-cutter, it's elitist, it's common. Yeah, it fits NAMBA, APBA, and all those other acronyms, but you don't have any more FUN than do I.

Let go of the shackles; build a micro and experience the freedom to explore your abilities to be creative. 1/20 scale at 35mph is essentially the same as 1/4 scale at 175mph.

[Dr. Jet]

The wood parts are in the laser-cutter guy's hands. They should be done in a week or so.

[NativePaul]

Jeff Ross is Monojeff on here.

[Jerryemartin1958]

What are the dimensions of this blue blaster?

[Dr. Jet]

What are the dimensions of this blue blaster?

Length: 17.4"
Width: 8.5"