Hi Aussie Boat Guy! I've really enjoyed this series. I'd be interested if you decide to do anything similar with a 4 stroke in future. I'm limited to a single cylinder 6hp 4stroke by my desires for weight/convenience/noise/fuel consumption, but more speed would be more fun.
Hi mate, Thanks, I really appreciate your comments. We will see if I do a four stroke, I’m onto a 9.8hp two stroke next. Keep in mind if you mod a motor it will use more fuel. Cheers 🍻 Aussie Boat Guy 😎
Cheers bro, The further you can get the weight back (once on the plane) in a little boat like a tinny or a little race boat normally the quicker you go. It allows the hull to get air under it, also less hull in the water. If you sit up front it buries the nose and slows the whole thing down. That’s why we see a lot of young tinny kids around here both sitting on the back seat while flying along 😂 That prop is a chopper, you can see my motor is trimmed pretty square to the keel too so I’m not wasting thrust and trying to put it all into speed. Trimming a motor out also lifts the hull out and you gain speed if you cannot move your weight aft like on a bigger boat. Cheers bro 🍻 Looking forward to your next vid on the chainsaw long tail.
Just sayin, If the propeller was deeper say 4-5 inches from the surface wouldn't you be able to go even faster? Looks as if half the prop is in the air. wonder what else can you modify, steering and windshield? btw amazing little dingy
Hi mate, Yeah, it feels like it should be faster with more prop in the water but it’s way slower. More prop in the water = more drag. It’s a surface piercing propeller (blew my mind that they are so much faster many years ago when I saw them) At speed water gets pretty hard so you don’t need all the blades in to crest hood thrust, removing blades from the water means less drag so you can increase pitch. Also less gearcase in the water is less drag. Cheers 🍻 Aussie Boat Guy 😎
I have very much enjoyed your series of videos on the little 5hp. I'm struggling with the physics of the modified water pick up. To put it in Layman's terms ... it pees while at idle with no issues? Very much looking forward to the 9.8 ... will it be a 56 pounder (25 Kg)? thanks again!
Hi mate, Thanks so much, really appreciate your comments 👌 Yeah, I was a little concerned that at idle the water would not draw up the long extra tube and to the water pump, to my surprise, it has no issues at all, pumps plenty of water even at idle (idle was my concern) Even when you start the motor at idle it draws cooling water no problems. Yep, the 9.8hp I’m doing is the 25kg two stroke. Already made a lot of modified parts, don’t know if any will work yet but pretty excited 😊 Cheers 🍻 Aussie Boat Guy 😎
😂😂 It’s 100% acrylic, probably why I need to keep taking my beanie off, it gets too hot, then it inches. Got one made out of alpaca fur, too good for boating though. 😁😁
@@25hpboatracerman oh well, I guess you've helped recycle a few coke bottles.... I've got one made out of possum (a pest over here) and angora...but it's too bloody hot also.
Hi mate, I reckon it’s about 7hp but the thing is it makes that 7hp at a higher rpm (about 7000rpm) so that means it spins the props faster so more speeeed 😁 Cheers 🍻 Aussie Boat Guy 😎
Is there a way to lighten the piston to make more revs (trying to balance it out with balance weight on the crankshaft) and is there a Hemi piston upgrade? Id be funny 😂
@@Diesr Hi mate, Yeah probably is a way. I don’t want to go any further with the mod 5hp though as it’s still very reliable. I’ve started on a mod 9.8 now 😁 Cheers 🍻 Aussie Boat Guy 😎
Hi mate, Over 25 knots. Yep, check the other vids, it’s has ported exhaust and transfer ports, intake ported, high comp head, larger carburetor and the modified gearcase. The only thing I could do extra is an external exhaust but I don’t want the noise (would get pulled over where I live) Cheers 🍻 Aussie Boat Guy 😎
Yeah true 😂😂 I is way better holding on too, bit sketchy holding a camera instead of holding on 🤦♂️. Had to bring everyone along though, it’s need so much fun. Cheers 🍻 Aussie Boat Guy 😎
Man you've got to almost getting her up to 30-31knots so iam going to guess the highest top speed achieved now is 30.59 knots and when you backed just of wot she was just cruising comfy at 28 knots .
Hi mate, Pretty close, Have not yet got it over 30 knots though. My aim was over 25 knots, which it does now. It does cruise very well just off full throttle. Over 30 knots with my modded 5hp on that boat is achievable, probably just need to take the safety gear out of the boat. It’s about 15 kilograms, just don’t want to get pulled over without it 😁 Ps: very good guess. Cheers 🍻 Aussie Boat Guy 😎
Yeah, I know, but it goes over 25 knots. The rules are a little grey in that area but it’s because a stock 5hp (they are assuming) goes pretty close to 10 knots max speed. Trust me, that motor is over 5hp now plus the waterways authority would pull me over for sure at that speed. One quick look at the motor they will see the modified gearcase, low water pickups, race prop etc. Gotta do the right thing, or at least try too 😁 Cheers 🍻 Aussie Boat Guy 😎
Day For It! Looking forward to the 9.8hp next.🤘
such a nice day 😂
I’m so pumped for the 9.8hp 😁😁
cheers 🍻
Aussie Boat Guy 😎
Hi Aussie Boat Guy! I've really enjoyed this series. I'd be interested if you decide to do anything similar with a 4 stroke in future. I'm limited to a single cylinder 6hp 4stroke by my desires for weight/convenience/noise/fuel consumption, but more speed would be more fun.
Hi mate,
Thanks, I really appreciate your comments.
We will see if I do a four stroke, I’m onto a 9.8hp two stroke next.
Keep in mind if you mod a motor it will use more fuel.
Cheers 🍻
Aussie Boat Guy 😎
What speed are you getting i cut down the standard prop plus sharpening it on a Suzuki 6hp 5800rpm 15.1 knots on a inflatable 3.3m sib boat
Great little riper
Cheers 🍻
Loving it, can’t wait to get the 9.8hp modded
running like a champ mate good job.
Cheers mate.
Loving it 😁
Impressive hotrod👍
Cheers mate,
Had so much fun making it.
Cheers 🍻
Aussie Boat Guy 😎
That is quick! Also you are really far back , is that because the prop it trying to push up?
Cheers bro,
The further you can get the weight back (once on the plane) in a little boat like a tinny or a little race boat normally the quicker you go.
It allows the hull to get air under it, also less hull in the water.
If you sit up front it buries the nose and slows the whole thing down.
That’s why we see a lot of young tinny kids around here both sitting on the back seat while flying along 😂
That prop is a chopper, you can see my motor is trimmed pretty square to the keel too so I’m not wasting thrust and trying to put it all into speed.
Trimming a motor out also lifts the hull out and you gain speed if you cannot move your weight aft like on a bigger boat.
Cheers bro 🍻
Looking forward to your next vid on the chainsaw long tail.
Hello bos, caburetor 5hp ...or 6hp
Hi Champion,
It’s got a 9.8hp carburetor.
I put up a video on what I did to it.
Thanks
Aussie Boat Guy 😎
Just sayin, If the propeller was deeper say 4-5 inches from the surface wouldn't you be able to go even faster? Looks as if half the prop is in the air. wonder what else can you modify, steering and windshield? btw amazing little dingy
Hi mate,
Yeah, it feels like it should be faster with more prop in the water but it’s way slower. More prop in the water = more drag. It’s a surface piercing propeller (blew my mind that they are so much faster many years ago when I saw them)
At speed water gets pretty hard so you don’t need all the blades in to crest hood thrust, removing blades from the water means less drag so you can increase pitch. Also less gearcase in the water is less drag.
Cheers 🍻
Aussie Boat Guy 😎
I have very much enjoyed your series of videos on the little 5hp. I'm struggling with the physics of the modified water pick up. To put it in Layman's terms ... it pees while at idle with no issues? Very much looking forward to the 9.8 ... will it be a 56 pounder (25 Kg)? thanks again!
Hi mate,
Thanks so much, really appreciate your comments 👌
Yeah, I was a little concerned that at idle the water would not draw up the long extra tube and to the water pump, to my surprise, it has no issues at all, pumps plenty of water even at idle (idle was my concern)
Even when you start the motor at idle it draws cooling water no problems.
Yep, the 9.8hp I’m doing is the 25kg two stroke. Already made a lot of modified parts, don’t know if any will work yet but pretty excited 😊
Cheers 🍻
Aussie Boat Guy 😎
hahah so much speed from 5hp, cool!
Cheers mate,
I’m really happy with it.
All the best 🍻
Aussie Boat Guy 😎
Damn that is up high.
Yep, trying to squeeze all I can put of it 😁😁
Cheers 🍻
Aussie Boat Guy 😎
This is so cool
Thanks Champion 👍
All the best,
Aussie Boat Guy 😎
So is the skull protector made out of natural fibres ? Coz that's very important ya know....🤕
😂😂
It’s 100% acrylic, probably why I need to keep taking my beanie off, it gets too hot, then it inches.
Got one made out of alpaca fur, too good for boating though.
😁😁
@@25hpboatracerman oh well, I guess you've helped recycle a few coke bottles.... I've got one made out of possum (a pest over here) and angora...but it's too bloody hot also.
Awesome 😎
Cheers 🍻
Love your pilot pics mate 👌👌
how many horses does it make now (educated guess)
Hi mate,
I reckon it’s about 7hp but the thing is it makes that 7hp at a higher rpm (about 7000rpm) so that means it spins the props faster so more speeeed 😁
Cheers 🍻
Aussie Boat Guy 😎
I love your videos and the fact that you comment on comments is really cool I think you deserve more subs
@@Diesr
Cheers mate.
Really appreciate your support.
All the best 👌👌
Aussie Boat Guy 😎
Is there a way to lighten the piston to make more revs (trying to balance it out with balance weight on the crankshaft) and is there a Hemi piston upgrade? Id be funny 😂
@@Diesr
Hi mate,
Yeah probably is a way.
I don’t want to go any further with the mod 5hp though as it’s still very reliable.
I’ve started on a mod 9.8 now 😁
Cheers 🍻
Aussie Boat Guy 😎
Can you please do a 6hp 2 stroke merc/ tohatsu next pls
Hi mate,
Yep, that is exactly what I’m doing.
A 8hp Mercury, same as the 6hp Tohatsu and 9.8hp tohatsu.
Cheers 🍻
Aussie Boat Guy 😎
awesome
Cheers mate,
Having so much fun with the little thing 😁
All the best
Aussie Boat Guy 😎
Wow. How did u rig up the cooling water feed ?
Hi mate,
Low water pickups, I used a scupper on the transom.
Cheers 🍻
Aussie Boat Guy 😎
My guess is 18 knots. You say modded but is it ported or is the engine block stock?
Hi mate,
Over 25 knots.
Yep, check the other vids, it’s has ported exhaust and transfer ports, intake ported, high comp head, larger carburetor and the modified gearcase.
The only thing I could do extra is an external exhaust but I don’t want the noise (would get pulled over where I live)
Cheers 🍻
Aussie Boat Guy 😎
Guess the speed. 5 mph faster without the GoPro hanging out in the wind? 😅
Yeah true 😂😂
I is way better holding on too, bit sketchy holding a camera instead of holding on 🤦♂️.
Had to bring everyone along though, it’s need so much fun.
Cheers 🍻
Aussie Boat Guy 😎
Ciao non è montato molto alto?
montato molto in alto,
non può salire molto più in alto, non avrà sterzo 😁
saluti
Aussie Boat Guy 😎
@@25hpboatracerman I mean it seems mounted very high, shouldn't the wing be in line with the hull?
@user-vn8ps9eg3b ah ok
@@NinoSpinner
It is way faster to run a motor that high with the appropriate propeller (racing propeller)
Cheers 🍻
Aussie Boat Guy 😎
@@25hpboatracerman thanks
did you make specific videos on these propellers?
Nitro and some Nos! When?
😂😂
Nu, she is done, still very reliable too which is what I was going for.
The 9.8hp will be fun 🤩
Man you've got to almost getting her up to 30-31knots so iam going to guess the highest top speed achieved now is 30.59 knots and when you backed just of wot she was just cruising comfy at 28 knots .
Hi mate,
Pretty close,
Have not yet got it over 30 knots though. My aim was over 25 knots, which it does now.
It does cruise very well just off full throttle.
Over 30 knots with my modded 5hp on that boat is achievable, probably just need to take the safety gear out of the boat. It’s about 15 kilograms, just don’t want to get pulled over without it 😁
Ps: very good guess.
Cheers 🍻
Aussie Boat Guy 😎
Hi buddy, any way to get in touch with you. I have a pretty interesting project and would like to chat with you.
😂👌👌👌👌
Cheers 🍻
No need for registering it, since it's only 5hp...
...until MSB pull you up for exceeding 10kts
Yeah, I know, but it goes over 25 knots.
The rules are a little grey in that area but it’s because a stock 5hp (they are assuming) goes pretty close to 10 knots max speed.
Trust me, that motor is over 5hp now plus the waterways authority would pull me over for sure at that speed.
One quick look at the motor they will see the modified gearcase, low water pickups, race prop etc.
Gotta do the right thing, or at least try too 😁
Cheers 🍻
Aussie Boat Guy 😎
😂🛥️💨💨💨👍
So much fun 🤩
Yes bro good job
私の5馬力は8キロしか出ません🥲
こんにちは、
達成できたスピードにとても満足しています
ありがとう
オーストラリアのボートガイ 😎