Well.......she's all done !!

[MarkF]

I am using a 2316 10 prop which is a little lifting but the bouncing seems to be starting from the sponsons. I have tried moving the weight all over the place and more forward works better. I have a 2215 15 prop to try now and I might even add ride pads just to see if that helps. The nats is in 2 weeks and no way will I be competitive pedaling the boat around just to keep it on the water to finish a heat.
I would like to hear from Phil T himself and see what he thinks.

Mark

[rol243]

Yes Mark it would be alot easier to sort out your issue if you could get some settings etc from the other guy who has the same hull running well. i would copy his c.o.g. / strut depth / strut bottom shape and angle and prop choice. maybe also check your ride pads to make sure theres no hollows as you know can cause all sorts of handling issues. good luck and i hope you can get this fixed for your Nats.

[Gary]

I can also tell you that this hull does not like certain props. I know if to much cup is added to my prop it will do that. Also I had gotten a run of prather 235 props that where not the same as the older style and would do the hop thingy as well.Drove me crazy for weeks not understanding what the problem was and all along it was the prop.

[longballlumber]

Mark -have you taken off the turn fin just to see if it removes the hop?

[MarkF]

Yes I have taking turn fin off to see if that helped. Nope. I also shimmed it too and that did help a little with turning. I can't tell you guys how much I have done to this hull. Tonight I added some 3/32 ride pads to see if this helps. There is a big step from the sponson to the ride pade. A 1/4" which seems a bit much to me. I will go out on friday to test again and I will also try the 2215 15 prop which has a lot less lift than the prop I was running. I will let you know if the ride pads helped or not.

Mark

[urbs00007]

I am using a 2316 10 prop which is a little lifting but the bouncing seems to be starting from the sponsons. I have tried moving the weight all over the place and more forward works better. I have a 2215 15 prop to try now and I might even add ride pads just to see if that helps. The nats is in 2 weeks and no way will I be competitive pedaling the boat around just to keep it on the water to finish a heat.
I would like to hear from Phil T himself and see what he thinks.

Mark

put some rake in this prop. see if that helps.

[Gary]

I have also put some heavy weight in the front or rear. I know it's a pain to test with problems but throw 3-4oz's i the rear transom and see what it does. I believe you have way to much lift going on with to much lift with prop or not enough weight in rear.

[MarkF]

Gary I ran the boat with a stock 455 prop and about 6 other variations and it still hoped. I have tried putting weight everywhere, it doesn't matter. Well weight forward matters the most because my problem with hoping is only at slow speed. At full throttle it rides smooth. It just blows over with the slightest gust and that isn't going to work when I try to run with 4 other boats in the water. I cut the airdam off and that didn't help. So now I am adding ride pads to get the hull higher out of the water so the air can escape quicker. This will allow me to lower the strut some more to help with air release as well. We will see.

urbs. read my post, I am going to a prop with more rake. You can't add rake, the prop has to be made that way.

Mark

[Fluid]

Terry, Joerg went 140 mph on an FM radio......


.

[Gary]

Wait a second...is it a hop at the transom or is it the sponsons rocking side to side?

This? https://www.youtube.com/watch?v=D03K_1rqUKU

[T.S.Davis]

Terry, Joerg went 140 mph on an FM radio......

True, but what else was there then? Plus, is he human? Sort of I guess.

[rol243]

theres nothing bad about FM Radio whatsoever, you have good to excellent range , you might have PCM inbuilt , you have a good Failsafe inbuilt., you don,t get Brown Outs like Spectrum gave me. i say this from experience with r/c over many years before 2.4 gig radio was even thought of, and originally flying r/c aircraft even before FM radio was thought of [ AM radio ] range both on land and in the air was excellent . i still use good FM gear such as JR 11X FM / PCM and Multiplex 8 / FM and now Jr 2.4 gig and Futaba 2.4 gig, there is no noticeable difference in either radio set , you have Failsafe use it. there are many guys that will ONLY USE FM Radio for SAW Events, true fact.

[NativePaul]

I went to 2.4 early and haven't looked back, but FM was pretty good to me once I switched to Multiplex IPD receivers (similar protocol to Berg). Those I know that are still on FM tell me that is better now than it ever was, as most of the issues were idiots ignoring or forgetting the peg board, and now they are the only one at the lake/field/track on FM as almost everyone uses 2.4ghz.

[rol243]

thats very true with not many guys using FM radio these days allows for a cleaner and safer reception. i did have a guy switch on his tx when flying r/c planes and that wasn,t very nice. boom crash. the Fm sets i have have tx and rx modules that allow for any dial up FM frequency on the 36 meg band no xtals.

[T.S.Davis]

My rc days date back to AM too. Nothing but trouble for me until I went to 2.4g. Brushed motors were harder on FM.