How to race Thundercats - Motor set up

[@dirkje01]

This is so great, sharing your knowledge to make the sport more competitive! Maybe the most easy way getting a good speed out of your boat is the secret maths of engine height, prop choice and water conditions. We'd like to hear from you about this in the next video ;-) (Cause I'm still learning by trail and error)

[@OXSEnterprises]

Keep trialing. We have a few video ideas but myself (filmer/editor) and Brownie live at the other end of the North Island so the logistics are hard.

[@russoley8995]

old video but I am wondering how fast you guys go ?

[@RomanovDK]

NICE! Well done - keep 'em coming , please. Other topics: how to modify (the engine)?, how to handle torque (steering damper, elastic cord? ). How to right the boat in case of a "whoops" - What gear is required in the boat/on the person for races etc.

[@OXSEnterprises]

Engines are standard. I think I have clips of the boat being righted so could do that. Safety equipment and what gear is needed is coming next week. Cheers.

[@joelkoonce8559]

Top job Mate. I run an inflatable on Cook Inlet In Alaska, sometimes it gets wild .

[@nicholaszamelis9471]

How long I’d the prop typically?

[@knightcustombuilds6988]

Where can i get the cowling hooks that you have on her? Im building a 96 M50D as we speak with all the goodies. Thanks in advance!

[@inflatableboatracing699]

Great info, thank you. Keep it coming!

[@OXSEnterprises]

Will do.

[@Hotrod5200]

Love your videos!! Any advice on Splitting my crank and rebuilding it?

[@cristianarrau8494]

Hi, you use long or Short Shaft?

[@OXSEnterprises]

Short

[@knightcustombuilds6988]

Im running a mercury 11X15p s s. Prop, it blows out before reaching top speed. Prop to pad is on the money. What prop can i get to keep it from blowing out. Possibly semi cleaver or a chopper prop? Im prop shopping and Ron Hill S.C. arent cheap. Thanks again! Edit: 96 Tohatsu M50D,

[@riverrat321]

Great video. Where do you buy the straps to tie down the cowling?

[@KVANTdoo]

I've been checking your channel if there is something new, but no more. Will you do more? I would like to se video of setting (height of the motor and trim and the best aproach to that). And maybe how settings changes when using different props (Cleaver, bunny ear, semi-cleaver) with different pitch.

[@OXSEnterprises]

Not doing anymore sorry.

[@goose93000]

Would there be Thundercat racing in NSW or near Sydney

[@SgtMorrow]

What settings do you use on your tiny tach to get it to read correctly?

[@MrBrendan2103]

Hi fella ,watch most of your videos and really helpful ,With your contacts do you know anyone that might have a set of carbs for a yamaha 50hp 6h5 triple. I have the 40 6h4 and want to convert it to the 50 plz. Any help much appreciated

[@OXSEnterprises]

I would try a Yamaha outboard shop or Cam from Cams Marine

[@federicomontoya6861]

hey man! would you mind making a vid on transom, mounting, trim angle and propellers? or share any book i could use? I am having trouble with a 40 hp yamaha on a 13.3 feet inflatable. thanks!

[@4JesusRace]

whats a good starting point for prop height,,, is the the center of the hijackers a good place to start with center of prop hub the same as the center of the hijacker im about 4 inches below that it shots water back in the boat also i do leave the trimtabs( the lip on the back of the transom alone or do i want to tweak them some up od down

[@daddybot]

Depends on your hull type. A thundercat does not have trim tabs, you may mean the cav plate which is not adjustable. The prop shaft in line with the hijackers is as good a starting point as any. Basically you move up and down, looking for between 6500-6800 rpm with a fairly steady tell tale. Then start trimming in and out using a gps and rpm to find the sweet spot. Its all about trial and error, lots of it...

[@darrenicon5172]

Hello nice vid. I just got a 40hp merc/Tohatsu with 40hrs as new can you tell me how to make it 50hp as the bore and stroke is the same. What do I change to make it 50hp. Thanks

[@OXSEnterprises]

Sell it and buy a 50.

[@jefersonsubverga341]

Keria saber o k fazer para melhorar o desempenho do motor 50 Mercury

[@josephmannphotography]

What pressure do you run your chambers? Out here California we see temps of over 95f/35c and our boats develop seam leaks. My boat is older and I know I am going to have issues over time. Do you have any recommendations? A new boat is not in the cards so I am playing the cards that I have! Stabond is my new cologne!

[@OXSEnterprises]

Here's the video on hulls kzbin.info/www/bejne/j3KyZIalZ854m6c And one on leakskzbin.info/www/bejne/qqSwf4KGqbitmtk

[@seumasmacleod1322]

You can use liquid latex inside the tubes, helps seal up wee holes in the material. Just pour it in through the valves then roll the boat around to cover the inside of the tubes

[@zefrimohd2619]

Nice video...where can I get performance cylinder head for 30hp tohatsus? Any ideas? Thanks...

[@OXSEnterprises]

I wouldn't have a clue mate. Not sure if anyone is really onto working the 30's

[@nch088]

What is the common shaft length for these rigs?

[@OXSEnterprises]

Standard short shafts

[@federicomontoya6861]

Is cams marine still in business? where can i get modified parts? thanks

[@OXSEnterprises]

Yeap he is.

[@demoll78]

What venting and dancing the carb does

[@OXSEnterprises]

Stops the motor starving for fuel.

[@demoll78]

@@OXSEnterprises can you do that with any carb

[@demoll78]

@@OXSEnterprises I have a 20 mercury

[@OXSEnterprises]

Yeap. We don't have a tutorial but I'm sure you can find it online.

[@RY4NP]

Any rules on carbs?. Size, jetting, mods?

[@OXSTV]

Standard.

[@idoplaythis788]

But how is your engine so high? My outboard already ventilates when the cavitation plate gets above the waterline.

[@RY4NP]

Any rules on fuel?

[@OXSEnterprises]

I feel we should've touched on that. Fuel must be pump gas from a service station. No additives allowed except two-stroke oil. Recommend fully synthetic oil, do not use ethanol gas like at Gull as it will attract water and clog up carbs when racing.

[@RY4NP]

OXS Enterprises i raced rubber ducks for s surfclub here in oz back in my teens and im pretty sure fuel was regulated, but you could always smell that sweet avgas in the air.

[@brianmorrison9066]

Really? You can't even jet your carbs for the air density? That's kind of lame.

[@grantmcginty3362]

I reckon a video on re instating a motor would be good for us new guys

[@OXSEnterprises]

Yeap have discussed it. Want to try do one as it happens.

[@Aaron40117]

great video. Where did you get your JACK PLATE from? I'm looking for the same but can't find them anywhere?

[@OXSEnterprises]

Try Cam at Cams Marine www.camsmarine.nz/

[@FreddyGre]

Could you guys please do a video about engine height. With my cleaver I only go 60 kph and I think its because of that... Would be awesome

[@OXSEnterprises]

Will try.

[@davidhorwood6075]

Any advantage/disadvantages of mixing 98 compared with 91 fuel on a mid 2000’s Yamaha 50?

[@OXSEnterprises]

No advantage. Everyone who races uses 91. May be advantage with a mod motor.

[@kadebrowne9913]

awesome video

[@Mk-fi1qw]

First

[@OXSEnterprises]

Good on ya!

[@paradisemace1]

ALWAYS mix your oil and gas. I've seen too many motors ruined because of oil starvation.

[@kadebrowne9913]

great video

[@OXSEnterprises]

Cheers mate.