80 mph on 3s with the Zippkits R4

LibertyFrancis · Mar 21, 2024

I picked up this used R4 rigger from Oscar Love in north Texas.
It was a bare hull and had been crashed/repaired. With a little love it made it back into the water this week.

I am really happy with the results of this setup.
TP3630
Hydra X ESC
Onyx 6600 3s pack
3/16 flex setup
42 mm china aluminum CNC prop (unknown pitch) specs only say "high rake"

The clean run starts around 1:50

Oscar Love · Mar 21, 2024

NICE!! Glad you're getting some speed out of it!

LibertyFrancis · Mar 21, 2024

Oscar Love said:
NICE!! Glad you're getting some speed out of it!

Thanks man! She runs very good. Better than my FE33.
No regrets on the purchase. I wish this hull could fit the XLX2 and it would really be cooking!

Dave Gilles · Mar 21, 2024

dang that has to be over 450 amps!

LibertyFrancis · Mar 21, 2024

Dave Gilles said:
dang that has to be over 450 amps!

I wish I knew. The Hydra x logging stops at 353.9 amps

I originally tried to setup this boat to run on a CNHL 2,200 mAh 70c lipo to keep it very light weight. That LiPo ran the boat for 10 seconds. It got pulled down to 4.8v overheated and puffed like crazy. I am lucky it didn't burst into flames....

LibertyFrancis · Apr 16, 2024

I changed to a lower KV TP3640 motor and ran this boat on 4s at 94 mph.
The castle data logs show it has a little more in the setup. I hope to break 100 mph next time out.

IntlAdmin · Apr 16, 2024

Wow, it really moves. And great to see that you retrieved it without sliding in that mud.

LibertyFrancis · Apr 17, 2024

IntlAdmin said:
Wow, it really moves. And great to see that you retrieved it without sliding in that mud.

Thanks!
Yes that was some slippery stuff!!! My son ended up sliding into the water luckily still standing up...

Jeffrey Hammond · Apr 17, 2024

I just purchased an R4. Any advice on the build?

LibertyFrancis · Apr 17, 2024

Jeffrey Hammond said:
I just purchased an R4. Any advice on the build?

I had bought this one from Oscar already built... so I don't know much about the build related to the wood assembly. They are well designed as is. I don't see any reason to deviate from the instructions.

The one thing I do for all my riggers is swap to a speed master Mono strut because I don't like the Z strut they have with these kits, they always come loose. https://www.offshoreelectrics.com/proddetail.php?prod=ros-spdss-002

I am starting a new 33 FE build tonight

Jeffrey Hammond · Apr 17, 2024

Thank you for the heads up on the strut. Will go with your recommendation for the strut.

Jeffrey Hammond · Thursday at 11:30 PM

Hey Liberty
I just finished building my R4 rigger. I plan to run it on 4s batteries. Is a 4s 5000 mah battery a good size? By the way, I set it up with the strut you suggested.

LibertyFrancis · Friday at 8:53 AM

Jeffrey Hammond said:
Hey Liberty
I just finished building my R4 rigger. I plan to run it on 4s batteries. Is a 4s 5000 mah battery a good size? By the way, I set it up with the strut you suggested.

Yes I had a SMC 5100 mAh soft pack lipo in my 4s video above. It just barely fit so double check the dimensions.
I highly recommend SMC for batteries.

Jeffrey Hammond · 2024-11-23T22:19:28-0500

Do you think the SMC batteries are better than Pulse or Gens Ace?

LibertyFrancis · 2024-11-23T22:43:45-0500

Jeffrey Hammond said:
Do you think the SMC batteries are better than Pulse or Gens Ace?

100% yes
Best thing is to review the data.
Check out the list for 700-800g

https://www.rcgroups.com/forums/showthread.php?1767093-Battery-Load-Test-Comparisons

80 mph on 3s with the Zippkits R4

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