Brushless & LiPo conversion

[srislash]

Yeah I think that rudder should be good. It is a nice size.

Here is a pic of mine, a lot of changes done to it but I couldn’t keep an .098 flex cable in it.

B974A42A-D106-485D-8AAF-65B4C54CF8CA.jpg30B61549-F1C5-4669-911C-4BFD66EC4BB5.jpgA60A65E7-E1CC-4892-B9FF-02D6F2F1E56A.jpgA5D19772-D587-4730-931E-38A8C27C9A8A.jpg

[Mad Hatter]

Srislash,I bought 36mL of permatex blue,I think I should return it, ($18.49) I really wanted Loctite 222 purple. I think I'll get on line. I'm not too anxious am I?

[srislash]

If using for keeping threads locked blue is fine.

[Mad Hatter]

Thanks,I've got it striped down to 13 ounces. Now it's time for it time for it to start gaining weight. I assembled the motor/water jacket, water cooled mount & coupler today, It looks awesome! I'll mount it as far forward as practical in order to reduce the drive angle. I'm considering the 30mm x50mm OSE trim tabs but I'm not sure if there will be enough room on the transom. I'll have to wait until the rest of it is done. I have a lot of glass work to do. About props, I Understand about diameter & pitch. I've even sent a few Props out to have them cupped (on full scale boats). I can basically estimate the top speed of a Cigarette, Donzi, Fountain etc by taking a good look at its props. You can stand back and estimate the size and weight of the boat but you can't guess the amount of horsepower until you take a good look at the props, (or take a look under the hood). Any one of these boats can beat the other providing it has the power to turn more pitch. I'm not quite sure what you're saying about rake? Please explain. THanks, -Ken-

[srislash]

Well easiest to explain take is to go to my favourite prop schoolers: http://www.mercuryracing.com/prop-sc...-3-blade-rake/

[Mad Hatter]

Thanks again srislash, I'll check it out. I've worked on many mercs. I've put a pair of 540 bulldogs in a 42 foot cigarette revolution run it, and prepped it for the Atlantic City boat show. We also had a Douglas Skater with 3 Bridgeport motors 2.4 liters hanging on the back, it was the marina owner's son's race boat. Well enough reminiscing for now. I'm building a model boat and studying about prop rake and surface drive. I'm beginning think it has something to do with lift.

[srislash]

Yup, low rake and a lot of pitch raises the tail but add high rake and you will lift the nose .

[Mad Hatter]

Thanks yet again Srislash, I have done some more measuring. This boat is 648mm (25.5 inches) long, not the 24 inches as is often stated in the old archives. It's transom is 5 7/8 inches (148mm) wide. I am considering the ABC-17-45 series clever 2 blade.Probably in a 1.6 inch diameter. I kind of wanted to use the 30mmx50mm trim tabs but I'm not sure if I will have enough room to turn the rudder which I think will hang 1.58 inches off the transom,the prop along side of it. I know these tabs would make it handle like a longer boat. This is a lot to ponder. I guess I'll cross that bridge when I get there. This is hanging a lot of hardware out back, but if that's what takes It to go fast and kick up a good rooster tail, well then that's I'll have to do. I have a lot of work to do (fiberglass). My budget is shot for a few days,but I'll be in contact. Thanks again, -Mad hatter-

[srislash]

I’ll try to dig around my gear and see what fits. You could always make some trim tabs. Something I’m going to try on next mono is a narrow tab which hangs further behind the boat.

[Mad Hatter]

Don't worry about it, I'll order the 30x50 tabs next week. If they don't fit I can modify them or save them for a future project. Namely my Dumas deep V 60. But they just might fit. Thanks again.

[Mad Hatter]

OSE is great! Ordered parts on Monday, received them on Wednesday. Looks like they'll they'll fit and give me a decent amount of rudder travel so long as I keep the prop at 1.6 inch diameter. Thanks for all of the input! -Ken-

[Panchothedog]

Just saw your thread. Don't know how far along you are with your conversion, but one thing to keep in mind is the strength of the transom before you hang too much stuff off of it, (strut, rudder, trim tabs). As I remember a lot of plastic hulls didn't have much of a transom doubler in them. Cut a piece of 3/16 or 1/4 " plywood to fit as snug as you can and epoxy it to the inside of the transom. It will make it easier to mount stuff firmly and help strengthen the back of boat. You're going to need it as the plastic does not she well. I know, I've parked a few old ones.

[Mad Hatter]

Hey thanks dog, I've been thinking about that myself. I went to the garage 2 days ago and grabbed me a piece of 3/16 ply, thinking along the same lines. I plan on doing doing exactly what you're talking about! I want to cover it with OSE's Carbon fiber sticker. It will look cool and hide a multitude of sins. Besides it will give me some meat to bolt this stuff to. The screws are about 3/4 inch long and I'd hate to lose hardware over an unseen stick in the water or a blow over. I'd rather have the whole transom torn off than lose a few expensive parts. That's just the way I am. Thank you for your input. It is greatly appreciated! Like minded people think a like! Thanks again-Ken-