Search: Posts Made By: pompebled
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Forum: RC Scale Boating 04-13-2016, 08:56 AM
Replies: 40
Views: 10,310
Posted By pompebled
Hi modeleryang...

Hi modeleryang (http://www.rcuniverse.com/forum/members/modeleryang.html),

If the mounting holes are 29 mm apart, the jet is intended for a 700 motor, which is a better option than a 550, which...
Forum: Speed - Electric 11-17-2014, 12:27 PM
Replies: 820
Views: 67,316
Posted By pompebled
14,8 x 2700 x 0,8 = 31968 rpm What I mean...

14,8 x 2700 x 0,8 = 31968 rpm

What I mean is, that if a 100A ESC only has a few Fets in contact with the cooler, it'll burn as soon as the Ampdraw exceeds 20-30A.

Regards, Jan.
Forum: Speed - Electric 11-17-2014, 11:57 AM
Replies: 820
Views: 67,316
Posted By pompebled
Hi Intense, I take a piece of flat hardwood,...

Hi Intense,

I take a piece of flat hardwood, the width of the Fet board and glue a piece of 120 grid sand paper onto it using double sided tape.
I clamp the wood in the vice and move the fets...
Forum: Speed - Electric 11-17-2014, 09:42 AM
Replies: 820
Views: 67,316
Posted By pompebled
On my boat, 32 mm looks small too, but 32000 rpm...

On my boat, 32 mm looks small too, but 32000 rpm is nothing to sneeze at...

I'm running the 3700Kv motor on an ETTI 90A ESC and it barely gets warm, even on 3S, so a 100A ESC should handle a 4S...
Forum: Speed - Electric 11-17-2014, 09:13 AM
Replies: 820
Views: 67,316
Posted By pompebled
Hi intenserapture...

Hi intenserapture (http://www.rcuniverse.com/forum/members/intenserapture.html),

Mathematically 4S x 2700Kv gives you close to 32000 rpm under load, which is high for a monohull, but it can be...
Forum: Speed - Electric 12-17-2011, 04:01 AM
Replies: 29
Views: 1,942
Posted By pompebled
RE: Need opinions on what could be wrong

Hi Peter,

I noticed in your opening post that you set the ESC's at a soft cut-off.
I accidently had done this at one of my ESC's and the runtime was 'dramatically' short (2-3 minutes),...
Forum: RC Boats General Discussion 12-17-2011, 03:40 AM
Replies: 4
Views: 942
Posted By pompebled
RE: Gyro for trim tab control?

Hi Dean,

If you're going to try this in a medium speed scale build, it may be worth a try, but you may be right as to the correction always being a bit late...
The faster you go, the more the...
Forum: Speed - Electric 03-20-2011, 02:32 AM
Replies: 20
Views: 3,433
Posted By pompebled
RE: old Robbe Diabolo help needed...?

Hi Colosus,

I assume you know the 1300-9 needs watercooling on both can and brushtabs, to keep is alive on 20-24 cells NiMH or 7-8S Lipo?

I added a picture of my 1300-7 with a custom made...
Forum: Speed - Electric 03-20-2011, 02:07 AM
Replies: 20
Views: 3,433
Posted By pompebled
RE: old Robbe Diabolo help needed...?

Hi Colosus,

A large 920mm hull doesn't 'need' a flexshaft, a solid shaft will work just fine, as long as it's long enough to keep the propshaft angle at a minimum.
The angle doesn't need to be...
Forum: Speed - Electric 03-20-2011, 01:32 AM
Replies: 820
Views: 67,316
Posted By pompebled
RE: Prince 25

Nice work Bass!

I noticed in your previous set-up that you cooled the motor first and the ESC last, I'd reverse that in the current set-up, as the motor heats up the water substantually more...
Forum: RC Boats General Discussion 12-16-2010, 01:26 PM
Replies: 4
Views: 384
Posted By pompebled
RE: turborix 2.4 tx will not set with forward only esc, pls help!

Hi PM,

If the ESC in question, or the TX at hand, gives you so much 'trouble', why not get another cheap tx/rx set from HC for this boat (and other boats that don't need a selfcentering stick,...
Forum: RC Boats General Discussion 12-15-2010, 09:37 AM
Replies: 4
Views: 384
Posted By pompebled
RE: turborix 2.4 tx will not set with forward only esc, pls help!

Hi PM,

Did you consider a ratchet for that stick?

I have one on my transmitter and use it for speedboats (forward only) and scale boats with reverse alike.
Finding the center/zero point...
Forum: RC Boats General Discussion 11-18-2010, 04:15 PM
Replies: 1
Views: 349
Posted By pompebled
RE: Help picking the right boat.

Hi Darren,

A rigger is the fastest of the lot, it holds the world speed record with 140 mph, give or take a few miles...
Now that particular one is the result of a team effort and a lot of...
Forum: RC Boats General Discussion 11-13-2010, 05:57 AM
Replies: 28
Views: 7,044
Posted By pompebled
RE: Shockwave 26 Brushless.

Hi Rich,

Now that's what I call service!

I'm thrilled for you, go get them wet!

Regards, Jan.
Forum: RC Boats General Discussion 11-12-2010, 03:21 PM
Replies: 20
Views: 1,630
Posted By pompebled
RE: RE Hobby King radio 2.4

Hi Larry,

For scale and sail they work fine.

It may be an idea to get a seperate receiver for each model, to save time and trouble swapping from boat to boat.

I'm running all my models...
Forum: RC Boats General Discussion 11-11-2010, 03:28 AM
Replies: 20
Views: 1,630
Posted By pompebled
RE: RE Hobby King radio 2.4

Hi Blizard,

As long as your transmitter can 'see' the boat (no obstructions by buildings etc.) these 2,4 sets even work on speedboats, where the roostertail is notorious for blocking the radio...
Forum: RC Boats General Discussion 11-10-2010, 05:15 PM
Replies: 17
Views: 1,830
Posted By pompebled
RE: ESC Help

Hi syog100,

Usually having seperate cooling lines for the ESC and the motor isn't really necessary, but it doesn't hurt either...

The water that runs through the ESC first only gets a bit...
Forum: RC Boats General Discussion 11-10-2010, 11:51 AM
Replies: 17
Views: 1,830
Posted By pompebled
RE: ESC Help

Hi syog100,

I added a picture of the Mystery ESC without the shrinkwrap and the cooling plate; as you can see there are two PCB's with the powerfets and on the underside of the bottom one is...
Forum: RC Boats General Discussion 10-25-2010, 07:10 AM
Replies: 5
Views: 712
Posted By pompebled
RE: can i make it turn better

Hi Tony,

What you describe is typical for a surface piercing drive, as your boat has, it's called propwalk; the rotation of the prop, combined with the fact only one blade is in the water, will...
Forum: RC Boats General Discussion 10-15-2010, 02:14 PM
Replies: 16
Views: 3,559
Posted By pompebled
RE: 46

Hi Woody,

4-6 knots is walking speed...
Look here, I think your dad will like this better:
http://www.youtube.com/watch?v=OD9dnbj8bJA&feature=channel_page

If I can find the thread on...
Forum: Speed - Electric 10-11-2010, 09:14 AM
Replies: 21
Views: 1,958
Posted By pompebled
RE: Couple of boats to choose from

Hi Madworm.

The Shockwave and SV27 are well known, the V24 is the most scale looking boat, but it has the same motor as the much smaller Arpro, the 3635 1520KV outrunner is way too small for...
Forum: Speed - Electric 10-05-2010, 08:24 AM
Replies: 5
Views: 844
Posted By pompebled
RE: LiPo Q

Hi John,

Running lipo's in a 'hot' set-up requires pre-heating the lipo to 40°C prior to the run, failing to do so may result in bloating.
This is a 'normal' response of a Lipo that's been...
Forum: Speed - Electric 10-03-2010, 01:15 PM
Replies: 7
Views: 1,316
Posted By pompebled
RE: sealing holes without useing rubber boot

Hi Peter,

If you don't like the looks of the rubber boots, mount them inside the boat.

But on the water and at speed, who's going to notice if the boots are on the inside or outside...?
...
Forum: Speed - Electric 10-02-2010, 04:15 AM
Replies: 9
Views: 936
Posted By pompebled
RE: brushless recomendation

Hi Andy,

I've been running the KD motors too and found them to be amphogs, if your hull runs light (pictures please?) this one draws less current and should work too:
...
Forum: Speed - Electric 10-02-2010, 04:02 AM
Replies: 2
Views: 958
Posted By pompebled
RE: Surface drive design/tuning help

I'll wait for the pictures, but it sounds like there's a flaw in your set-up somewhere...

Regards, Jan.
Showing results 1 to 25 of 500



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