King Of Shaves C1 Brushless!

[Drag Boat Bob]

anyone else with one of these nice looking cats?

Let's see...

nguy0951 (on RCU) lost a drive line on the 1st or 2nd run, so he is down.
PerformanceTurbo/NitroVal lost a drive line also, so he is down.
Me; lost port side motor, so I'm down.

That leaves Jeff Wohlt that I know of.

What's up Jeff, how you doing???

[Rumdog]

snapped cables? loosened set screws? That motor failure is a total bummer though man. Are they gonna hook you up? I almost took the plunge on one of these. I think i'll still hold off a bit to see how this boat pans out in the future.

[Ub Hauled]

Let's see...

nguy0951 (on RCU) lost a drive line on the 1st or 2nd run, so he is down.
PerformanceTurbo/NitroVal lost a drive line also, so he is down.
Me; lost port side motor, so I'm down.

That leaves Jeff Wohlt that I know of.

What's up Jeff, how you doing???

What do you mean by "lost a drive line" (nguy0951)
Ditto for PerformanceTurbo...
What happened to your port side motor?

[Brushless55]

Let's see...

nguy0951 (on RCU) lost a drive line on the 1st or 2nd run, so he is down.
PerformanceTurbo/NitroVal lost a drive line also, so he is down.
Me; lost port side motor, so I'm down.

That leaves Jeff Wohlt that I know of.

What's up Jeff, how you doing???

bugger..
any ideas what is causing the drive line to go by by?

[Ub Hauled]

snapped cables? loosened set screws? That motor failure is a total bummer though man. Are they gonna hook you up? I almost took the plunge on one of these. I think i'll still hold off a bit to see how this boat pans out in the future.

Snapped cables?! Loosened screws?!
How can that be a complain?! Don't you check your setup prior to use?
Why do you expect a boat to come out of the box and run like it was setup by you and
not have any type of failures?
Sorry guys, this is the users' responsibility IMO... not trying to pull either way but it's just a check prior to launch, you don't see air and car guys just powering up and going to town, why should a boat be any different?

Now a motor blowing is another story, that could be anything... warranty should correct that IF a huge prop was not used instead, once you start using monster props, you are on your own.
Again, just my opinion...

[Ub Hauled]

bugger..
any ideas what is causing the drive line to go by by?

with how many cells?

[Brushless55]

with how many cells?

I have no Idea, not my broken boat..

[Drag Boat Bob]

Actually the design is a good one. The lock collar between the flex shaft and the motor shaft has 4 set screws. Two on the motor side and two on the flex shaft side, each set 180 degrees apart.

Unfortunately these set screws are not holding. It could be the result of not enough threadlock, or they need to be checked before each run... not sure.

In Venom's manual it states to use threadlock on these. I did, but one run doesn't really tell anything.

[Drag Boat Bob]

What do you mean by "lost a drive line" (nguy0951)
Ditto for PerformanceTurbo...
What happened to your port side motor?

Take a look at the pictures a few posts back (maiden voyage on 3s):
http://www.offshoreelectrics.com/for...&postcount=221

[NitroVal]

Yup, I lost my starboard flex shaft and prop on my last outing. It could have been any number of things. I did go over every screw (especially the driveline screws) after hearing what happened to nguy0951. I did remove the cables a number of times to grease them ever 3rd run, and used loctite on the set screws in the collar. When I checked the screws in the collor that lost the flex shaft, they were still tight. My only conclusion is the direction the flex shaft is threaded. The centrifugal force from the spinning motor may have "unthreaded" the flex shaft from the collar, if that makes any sense. Nonetheless, I would reccomend everyone who gets one of these boats to put some sort of fail safe on their flex shafts- maybe a piece of fuel tubing, some bailing wire, a lock collar, etc. There is enough room between the collor and stuffing tube to put something there..

[Ub Hauled]

Yup, I lost my starboard flex shaft and prop on my last outing. It could have been any number of things. I did go over every screw (especially the driveline screws) after hearing what happened to nguy0951. I did remove the cables a number of times to grease them ever 3rd run, and used loctite on the set screws in the collar. When I checked the screws in the collor that lost the flex shaft, they were still tight. My only conclusion is the direction the flex shaft is threaded. The centrifugal force from the spinning motor may have "unthreaded" the flex shaft from the collar, if that makes any sense. Nonetheless, I would reccomend everyone who gets one of these boats to put some sort of fail safe on their flex shafts- maybe a piece of fuel tubing, some bailing wire, a lock collar, etc. There is enough room between the collor and stuffing tube to put something there..

Actually the design is a good one. The lock collar between the flex shaft and the motor shaft has 4 set screws. Two on the motor side and two on the flex shaft side, each set 180 degrees apart.
Unfortunately these set screws are not holding. It could be the result of not enough threadlock, or they need to be checked before each run... not sure.
In Venom's manual it states to use threadlock on these. I did, but one run doesn't really tell anything.

Take a look at the pictures a few posts back (maiden voyage on 3s):
http://www.offshoreelectrics.com/for...&postcount=221

A couple f things... in the case of the motor... ouch... there was some good heat involved, did you upgrade the props prior to the burn?

About the "grub lock" type coupler... I have had many issues with that kind of coupler, I use nothing but collet type now... on the other hand there are people who go about their lives w/o a hinge using grubs... I am just not one of them anymore.
BTW, I'll have a few couplers for sale, will post them once I organize the box, let me know if there is a size you are looking for.

PS: unscrewing the flex sounds VERY plausible to me.

[Drag Boat Bob]

UB,
My motor meltdown occurred on the maiden voyage with the stock plastic props. My GPS speed was 33.9 mph (on 3s). I put back 1775/1769 mah in the MA 5250's, so I wasn't running for an extended period.

I believe the reason that they went with that type of coupler is the tight space. There is enough room for a collet type coupler, but getting a couple of wrenches on it would be a stretch.

The drawback to their coupler is the extremely small set screws. They use the smallest allen wrench in my set. It is difficult to get any torque on them, not to mention you can only move the wrench a very small distance before having to remove/reinstall it again.

I may be interested in a couple of couplers (say that 10 times). The motor shaft is 4mm and the flex looks to be the same. The coupler is a perfect cylinder so I think that both ends are the same. I am only interested in a replacement if the set screws are larger.

I may just go a different route altogether. I am thinking about replacing both motors, as there is no stock for replacement of my motor. Any ideas on motors? For now I want to keep the mounts/etc. so it would have to be something in the 380 size. However, I am open to anything.

[Ub Hauled]

What kind of speeds do you want out of her?
1515/1.5D on 4s for SAW passes was what Jay T. was using this last time (I believe)

Maybe a 1515/2D on 4s for more extended runs

This is all based on a single motor scenario... with dual motors I am not sure since I don't know how much room there is to place the motors... I hope it helps.

[NitroVal]

Neu makes the 1100 series of motors which are basically 380 size..

[Ub Hauled]

If I ever get this hull, which I probably will, it'll be a single motor, I don't wanna deal with the counter-rotating props issue and probably the lack of room to handle the motors in the sponsons...
It looks like this hull talks the talk and walks the walk...