The first two boats I built

[epugh66]

I've only built about six including these, but ya gotta start somewhere. Both were built for a K&B 3.5cc outboard. The blue boat was built in about 1977 and the yellow one about three years later. They were much faster than the then availiable kit tunnel boats from either Dumas or Prather. As trial and error goes, the blue boats sponsons were too shallow. The yellow boat had too much lift.

At my local club lake, I had to wait to run alone, because my boats turned left and all model racers turn right. I tried to get them turn right, but they just wanted to spin. K&B even came out with a longer skeg because the tunnels suffered too. I went as far as to use a transom mounted turn fin. After awhile, I joined them and bought two Lee tunnels.

They sure were alot of fun. I always ported the exhaust elbow and the passage through the tower housing. On 40% nitro, they would run with the 7.5cc tunnels.

[David_L6]

Afterplanes on a Pugh hydro?

I don't think that I've ever seen a Pugh hydro with afterplanes - until now.

[Bill Blackwell]

Nice model boats, epugh66!

Are those scaled from full size Pugh plans? If so, 1/4 scale?

I have also built outboard hydro models for the K&B 3.5. And I agree, they are faster than the tunnels. But getting them to turn to the right like the other model boaters is extremely difficult. I have been fighting this too. I've tried rear fins and even moved the turn fin all the way back to the c/g...even behind the c/g. The prop rotation just wants to walk the transom around.

Anyway, thanks for sharing the pics.

They're fun and it doesn't hurt when you crash.

Bill Blackwell

[7-D]

had an old dumas dragonfly 40 inboard hydro set it up with a 3.5 outboard,that thing ran awsome , best outboard rc boat ive had yet, but it didnt penetrate rock that well.

[epugh66]

David, actually one 250 boat was built with the Butt's style after planes. It was Gary's first 250 and it was built about 1977 too. Both models had them. The yellow boat just got them filled in. And then as more nitro was added, they were extended back to help with the blow over problem.

Bill, I scaled them from a C service boat. Dont know what I was thinking there, well I was 13. I think it was closer to 1/8 scale.

7-D, those rockwalls are tough. Ask John Steven about the side of a bass boat

I'm thinking we should all build some new ones and run after the races are done each day. Left turns ONLY!!!

[Roy Conklin]

Gary's 1st 2509 CCH boat

David, actually one 250 boat was built with the Butt's style after planes. It was Gary's first 250 and it was built about 1977 too. Both models had them. The yellow boat just got them filled in. And then as more nitro was added, they were extended back to help with the blow over problem.

Bill, I scaled them from a C service boat. Dont know what I was thinking there, well I was 13. I think it was closer to 1/8 scale.

7-D, those rockwalls are tough. Ask John Steven about the side of a bass boat

I'm thinking we should all build some new ones and run after the races are done each day. Left turns ONLY!!!

I remember Gary's first 250 CCH boat because I bought it from Gary. The sale took place at a race just outside of Atlanta, Ga. I don't think that boat weighed 100 lbs, but it was fast and turned great. The bad part was it was built to light which made it very flimsey. However, for his first boat ever, it was a tremendous feat. Gary has come along way since then and builds some very fine boats.

[Roy Conklin]

Gary's 1st 250 CCH boat

David, actually one 250 boat was built with the Butt's style after planes. It was Gary's first 250 and it was built about 1977 too. Both models had them. The yellow boat just got them filled in. And then as more nitro was added, they were extended back to help with the blow over problem.

Bill, I scaled them from a C service boat. Dont know what I was thinking there, well I was 13. I think it was closer to 1/8 scale.

7-D, those rockwalls are tough. Ask John Steven about the side of a bass boat

I'm thinking we should all build some new ones and run after the races are done each day. Left turns ONLY!!!

I remember Gary's first 250 CCH boat because I bought it from Gary. The sale took place at a race just outside of Atlanta, Ga. I don't think that boat weighed 100 lbs, but it was fast and turned great. The bad part was it was built too light which made it very flimsey. However, for his first boat ever, it was a tremendous feat. Gary has come along way since then and builds some very fine boats.
Roy

[Jeff Akers]

Nice boats Eric

After reading this thread I found myself in the darkest reaches of my storage shed and found this old thing It started life as a Dragonfly 20. But I cut on it til it looked like it doe's now I know what you mean about turning right. After a while my brother said, wy dont you try locking the engine stright and put a rudder on the side. It worked realy well even worked better after cutting the skeg off the motor

Big problem was blowing over.
I ran my K&B 3.5 soooo tweaked (30k + rpm on 60% nitro ) you kould never hold it WFO in the straits.

I ran with the tunnel boats, Iwould allways pass on the outside

They hated that

Great fun and good times

[epugh66]

Thats nice Jeff. I know what the Dragon Fly 20 looked like and its not too visible in your final boat. Surely alot of work with good results.

[kws]

i have tryed to upload some photos but can not seem to do it any sugestions?

[Bill Blackwell]

Here's a picture of my latest R/C outboard hydro.

Jeff, I like your drag-n-fly. I built one too. You were able to really change the kit quite a bit. Looks good and with a driver as well. I bet the extra weight of the driver was not a problem. I see the JDS kit in progress too (in the background of your pic). Let us know how that's coming along.

Any other R/C outboard hydros out there?

Bill B.

[Jeff Akers]

Sweet Lookin Boat Bill,

Thats vary cool

This thread is makin my throtle finger itch

I stil have one good powerhead around her someplace

The JDS boat is going together just fine, bout ready for bottoms (This weekend I hope!) Thanks for asking.

[epugh66]

I just may have to dust off the engine and build a boat too. Tunnels are ok, but hydros are way cool!

[Dave M]

Dust ??

I just may have to dust off the engine and build a boat too. Tunnels are ok, but hydros are way cool!

Dust ??? I call that film !!! Hehehe, the breaks for storage in a woodshop !

Nice looking stuff. I am pumped now, I have an 11cc K&B tht I ranon tunnels..... now to build a scaled Hydro...hmmmm.