ChrisCraft flipping

[Rumdog]

A longer rudder would help for sure.

[sjslhill]

Nice boat....A123's are easy to solder with a 80+W iron.

thanks,
Steve

[treystoys]

I realize this is ancient, but the issue is the prop, not size, but blade style. I know most people don't think of an x440 prop as a lifting prop, but its not meant to be submerged on an angle and spin that fast.

Trey

[dasboata]

Nice job on the boat Pretty sure the problem is from the flat bottom. I would defintely install a turn fin. I would start with the scale fins that mount to the keel of the boat so you can keep the boat looks,, scale !

[treystoys]

Putting skid fins on the keel of an already tipsy boat will likely make it a bit more roll prone. One fin on the preferred turning side of the transom would help, but then for a fun runner that will be turned both directions you'd want one on each side but having a nearly flat bottom transom area will keep both fins in the water turning each way thus killing the usefulness there too. I think a scale like prop with way less rake and probably going from a 3s to a 2s set up would make the boat perform more scale like, but the prop change would keep it from rolling. either way.

Trey

[dasboata]

Putting skid fins on the keel of an already tipsy boat will likely make it a bit more roll prone. One fin on the preferred turning side of the transom would help, but then for a fun runner that will be turned both directions you'd want one on each side but having a nearly flat bottom transom area will keep both fins in the water turning each way thus killing the usefulness there too. I think a scale like prop with way less rake and probably going from a 3s to a 2s set up would make the boat perform more scale like, but the prop change would keep it from rolling. either way.

Trey

I don't agree I might be wrong or where it is mounted but I see a lot of skiff using them on there bottom ! and I am pretty sure he does not want a turn fin hanging off the side of this boat just saying !!!

[treystoys]

My statement about the skid fins were of what "would work", not what he wanted. Heck even his trim tabs look out of place on there, and really aren't needed. COG does wonders on a submerged drive set up! Anyhow, keel mounted fins just will not work...look closer at the pictures of the bottom of the boat...see anything that may resemble a keel mounted skid fin? His entire stuffing box is one big skid fin, adding more will make his boat behave worse. A subsurface prop looks nothing like the x440/3 he has on there and would function with way less rake, and take away the paddle wheel effect that a surface drive prop will have on a subsurface drive boat.

I'm gonna let this issue die, lol this fella may never even see this since its a 5 year old article. I happened on it, just lurking. I have a bit of background here as well, I was big into electric boating, mainly the racing variety, back in the day. I got out of the travel racing right around the time lipos were introduced into the sport, but my roots go way way back. Like when a fast electric boat was a scorching 15mph And we were converting MRP sub surface kit hulls into surface drive boats. Fun times...lol

Trey

[Stillwet]

i realize this is not the same exact CC, mine is the 1941 16' Hydroplane. i'm bringing this back (after another 4 years) because i also knew there might be a problem going from brushed (scale speeds). with all the reading i did i'm surprised i did not come across this thread during my construction. i'm taking heed to what was mentioned here and log into my notes. that said Thanx to all that put your (.98 cents worth in being now 2018). this project has been done for two years and yet hasn't seen water since the final hull test. so much time into such a small boat but they make a wonderful trophy. the only thing left to do is the windshield, the first app was too flimsy, i've been looking for thicker material.