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Built for 5-minutes oval races this video is its first. It is built around a styrodur-core which was dissolved by acetone later on in the building process.
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nice
:::::::::::::::. It's NEVER fast enough! .::::::::::::::: -
very nice man!
.NAMBA20...Caterpillar UL-1, P-Spec OM29, P-Mono DF33, P-Spec JAE, Aussie 33" Hydro-LSH, Sprintcat CC2028 on 8s, PT SS45 Q Hydro, PS295 UL-1 power, OSE Brothers Outlaw QMono 4-sale, Rio 51z CC2028 on 8s
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Thanks for watching!
Only relatively unexpensive parts were used in order to keep the expenses low. The carbon used, is TeXtreme which is used also in Formula I and professional sports equipment nowadays. Furthermore, the ETTI 150A ESC was purchased from OSE :-). The Leopard Brushless 2850 2.5d stays astonishingly cold! Only 27 degrees Celcius (which is 81 degrees Fahrenheit), probably caused by the heated up cooling water from the ESC.
Regards,
EricComment
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I assume thats on 2s lipo with that motor, What length is the boat & width accross sponsons. Im going to be building a rigger for a Leopard 28 series motor soon, Not sure what length motor im going for yet but will be running on 3s not for racing so time dosnt matter just max top end that i can get. Thats why i asked the size of your boat so i have some idea where i can go on motor choices & simply not over powering to much, But maybe just a bit though. Nice runs by the way. Thanks Martin.Comment
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Hello Martin!
The length of the tub is 65cm and the width (across the sponsons) is 35cm with sponsons-width of 3cm. When running the prototypes of this rigger I also used a Lehner 1535/5 on 3s for fun (instead of 2s for oval-heat racing).
The prototype is made from balsa and is the first rigger shown in the video-clip. I hope this will give you some impression and guidelines. Good luck!
Regards,Comment
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Hi Nativepaul im going to build a JAE21fe with a leopard 36 series motor in, Not sure what length motor or kv im going to go with yet but will run on 4s with saw type runs in mind. But i also intend getting the JAE Mini Sprint which i will run on3s hot set up, Do you think the Mini Sprint is a bit small to take a Leopard 28 series motor. Thanks Martin.Comment
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@NativePaul
In order to have at least 5-minutes runtime I use a 36mm Hydro & Marine prop. This is the clip with the 37,5mm H&M prop:
But 37,5mm H&M prop was too much. Actually I also should have used LiPos with larger capacity (5.800mAh instead of 5.000mAh). Probably X435 is okay, but to safe current it is recommended to remove the ears.Comment
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Aside from saving current do you find taking the ears of of props it also increaces top end speeds or is that not really noticable. In other words if your not racing & do not have to worry about run times is it still worth taking the ears off the props.Thanks Martin.@NativePaul
In order to have at least 5-minutes runtime I use a 36mm Hydro & Marine prop. This is the clip with the 37,5mm H&M prop:
But 37,5mm H&M prop was too much. Actually I also should have used LiPos with larger capacity (5.800mAh instead of 5.000mAh). Probably X435 is okay, but to safe current it is recommended to remove the ears.Comment
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@Martin
I am not a prop-expert, but in Holland it is also common practice to remove ears to increase topspeed (for SAW purpose for example). Props with ears, as I have been told, are designed this way to suit the market for combustion engines.Comment
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Nice work Eric! Love that rigger. You come very close to some nasty wood Docks, Piers.
Nortavlag Bulc Comment
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Some small modifications were done and a bigger pond nearby was sought for:
Unfortunately, I think the rigger is still lacking speed. Rear-ridepad has been installed and the motor-timing on the ESC was set to 7,5degrees. The tilt of the rudder was corrected. Perhaps another prop could give that little extra...Comment
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