Setup for Whiplash GV or Backlash

[RaceMechaniX]

Yes, it could be used as a T hydro motor, but a 1P lightweight set-up. Also, the chart was made when the only other option was the 2230. Neu was not publically offering the in btween sizes yet.

[madmikepags]

I have raced this class in competition, and while the Back and whip are great boats,if you are racing against any quality Big FE Riggers and any decent Nitro riggers you will be outgunned. I won this class at the Northern Lights Open last summer up in Canada, with a custom CMDI FE rigger and Howard was only a tick off of me with his big FE rigger. The other boats that were Sport Hydros (gas whips and backs) were way off the pace. That being said the 2028 is a LOT more motor than the 2215, I would actually prefer a 1530 over the 2215, almost the same power and 1/2 the weight and size!! The2215 just doesnt seem to have the yank it's size says it should. BTW they have been running this class for 10 years at the NorthLghts Open and that was the first time it was won by FE!!!!

[madmikepags]

BTW when and where is this race???????

[oscarel]

BTW when and where is this race???????

It's a new series being run this year http://www.rcbwc.com/. The next one is in Houston April 12-14.
The riggers will have their own open class so we should only be up against gas and nitro sport hydros.

[madmikepags]

OH ok u said open hydro so I'm assuming it's open "sport" hydro

[madmikepags]

looks like fun!!! I would love to do this all the open classes on sunday!!!! 1 question, is open offshore open to FE too???

[Fluid]

...I would actually prefer a 1530 over the 2215, almost the same power and 1/2 the weight and size!!

Uh Mike, have you ever actually weighed these two motors? As received mine weighed:

1530 - 24 oz
2215 - 25 oz

True that with cooling jackets the difference will be a little bit more than one ounce, and the 2215 is larger (like we don't have enough room in a gas boat?) but really, let's stay in this universe shall we......



.

[madmikepags]

wow no I havent but still rather have the 1530Ihave the 1530 in my 8s rigger and it's faster than any 2215 setup I've ever had in any boat including my riggers. I think the 1527's and 1530's are way undrerated as far as power goes. My 20lb 1/8 scale hydro powered w a 1527/1.5Y is 60mph and doesn't even break a sweat. I've had it propped to almost 75mph and there's still more left in it.

[electric]

looks like fun!!! I would love to do this all the open classes on sunday!!!! 1 question, is open offshore open to FE too???

Yes, our understanding is that "Open" means all the open classes will allow electric.

[photohoward1]

I can get pictures on Sunday. I am out of town till then.

[electric]

Thought I would re-start this thread and show what gets built. I just got my hands on a Backlash. Not literally yet, but I have a deal made and will pick it up the 1st week of March. This boat was built to be a gas boat so I will need to probably make some modifications, but it was never run before so it is basically a new boat. I am going to go with the Castle 2028 and a Castle HV ESC which will be ordered today. The next thing I need to find is a motor mount. I am told it has 5" mount point for the motor, which I am assuming is typical for Gas? Where can I get an engine mount?

I typically use 5.5mm bullets for my other boats. Will I need to go larger on this one or will that size work given the higher voltage should mean the amperage should be comparable to my other boats? Still have not decided which would be better to run 8s or 10s. I am leaning towards 8s, based on what others have said on this thread. Would like to get some estimation of what prop size would be appropriate for each setup if possible? I have two good 6s neu batteries and I could pair up to the appropriate 2s batteries to match, or I can run four 4s neu's for 8s 2p, but those are 5000mah batteries, so the weight might also be an issue. Will need to see what room I have in the boat. I plug in 6s batts all the time, but concerned about the arc on a 8s or 10s set up. Should I invest in a set up for spark suppression or just prepare for an even louder POP when connecting?

Pictures will come as I fit in the electronics. Should be able to start testing mid March or sooner and the race is in mid-April, just enough time I think.

[electric]

Which would be better for this set up running 8s? Castle 240amp esc rated at 8s or Castle 200amp rated at 12s?

[RaceMechaniX]

I forgot to answer a previous question regarding speed in the open class. You should expect 72-75mph in competitive from from a good gas sport. Mine does 76 in 2-lap trim at the end of the straight.

I am afraid you might end up pulling you hair out trying to convert the gas backlash to FE. If the stuffing tube is in it will be a PITA to redo it. Also if the radiobox is glued in be prepared to cut it out. On the bigger FE sport boats, the motor will typically need to be moved further back to accomodate the esc and batteries. A lot depends on how you place components, but in a whip or backlash it is pretty limiting.

As for connectors; I would use 8mm on the motor side and 5.5's will be fine if running 2P. If you are running 1P I would opt for 6.5's on the batter side.

TG

[Fluid]

Which would be better for this set up running 8s? Castle 240amp esc rated at 8s or Castle 200amp rated at 12s?

I never run an aftermarket ESC at its maximum voltage. This has worked well for me as I seldom burn down an ESC. Run the Castle HV on 8S.




.

[RaceMechaniX]

I have run an ICE 240 at 8S consistently with little to no propblems there were not my own fault for pushing the limits. For that motor though I would opt for the HV version which will allow you to run either 8S or 10S. You want to stay at or below 200A anyways on that battery voltage. 200A on 8S will be plently fast for heat racing in open.

TG