Pro Boat Blackjack 42 8S Catamaran RTR

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Unboxing.

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Speed and durability test.

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Temp checks and trying to keep it on the water.

[30nitro]

Looks like it won't be long before you have this one dialed in Mr Mad. !! Nice vid....can't wait for more.........

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58mph bj 42.jpg thumbnail.jpg

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Little more weight needed upfront for these higher speeds...

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[30nitro]

Nice run..!! If i know you...she's got more in her... keep it commin...

[csturgeon80]

Anyone have any suggestions for upgrading the flex shaft without having to replace the stock strut...(or having to adjust the low end torque with my radio?) Attempting to break some records but the stock shaft keeps snapping before I remember to throw the gps module in it. 😂I've got one high speed pass on video but my 5 yr old little girl was filming...I'll throw it on here in a minute.. ...stock everything...just added offshores trim tabs and a 3 blade prop on her (don't recall the specs but I'll look them up if requested..)
Ordered a new flex shaft and installed for this run and she snapped after about 6 minutes...

to be honest I'm hoping for an upgraded strut that's possibly a stronger metal ...like titanium etc... I know it's a longshot but I also just had to order a new strut and rudder...(original spectrum radio fritzed and she went about 50mph onto the bank (stopped about 38' on land finally stopping about a foot from the street...lol...really not wanting to tell the wife I need another strut after dumping $150ish on the new stock strut/rudder..😆

Any help would be extremely appreciated

[csturgeon80]

Here's the vid

https://youtu.be/Sej4wgftopI

[Peter A]

Here's the vid
https://youtu.be/Sej4wgftopI

You either need a slower boat or a bigger pond. You are snapping shafts so quickly because you are punching the throttle to get as fast as possible in a short distance of water. A bigger pond will allow you to ease on the throttle and not put full torque on the shaft from stand still.
Check out Ironclad RC on Youtube for a shaft change mod.

[csturgeon80]

Appreciate the advice... Yeah the neighbourhood is usually just my test bed, it's about a half mile long (loops completely around my side of the neighbourhood..but they keep boobytrapping it with fountains tethered with chains...I live in the Florida panhandle surrounded on 3 sides by the bay...then the gulf 3 miles to my south... winds seem to never let up lately so the larger bodies of water beat the heck out of her... always hated that they stepped down the shaft size rather than haunting the size of the flex but I'm sure their engineers had a good reason for it..ie: drawing weight deference in bla bla bla...but I'm no engineer...lol.in my mind it made for a fragile point...so guess I'll just have to sacrifice the acceleration and limit the throttle limit at the start of the acceleration through my radio....bummer...fortunately I went to a Radiolink RC4GS...cheap but hell of allot of features for the money...so it is an option.. (shaft broke so quick it'd suck for the stresses to be to much with this prop even blasting on a calm bay day...) problem with big race tracks for me is when things go south it's usually on the outside of the loop...and I'm getting to damn old to swim 500 feet...😆

[MADRCER]

Wiping the dust off...hitting 81mph ALL STOCK with a dasboata prop!.