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>> Home > Forum > Boat Specific Chit Chat! > Bow wave suppression
Bow wave suppression
(855 views)
Author Message
wunwinglo
(Lieutenant)





Forum Posts: 25
25th Jun 2018 04:29  
>> Permalink
mdlbt.com/43119

Guys, my MTB has a tendency to get a little flooded by her bow wave when under way at high speeds. She has a scale spray suppression rail at the bow which is notched like the full-size. I do not want to mount anything TOO gross but do any of you have some practical suggestions to make to alieviate this problem?

canabus
(Fleet Admiral!)





Forum Posts: 124
25th Jun 2018 07:23  
>> Permalink
mdlbt.com/43120

Hi wunwinglo
Try moving weight in the boat to the stern to let the bow come up at high speed.

Canabus

wunwinglo
(Lieutenant)





Forum Posts: 25
29th Jun 2018 20:17  
>> Permalink
mdlbt.com/43315

Hi Canabus,

I cannot really do this as she is slightly heavy. I was aware of this when I restored her last year and was careful to keep it light and aft. She is lighter than she was.

RNinMunich
(Fleet Admiral!)





Forum Posts: 2229
29th Jun 2018 21:26  
>> Permalink
mdlbt.com/43317

Hi "He who needs more lift under wunwing"😁
What batteries are you using?
And where are they mounted?
Cheers, Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
wunwinglo
(Lieutenant)





Forum Posts: 25
30th Jun 2018 08:17  
>> Permalink
mdlbt.com/43340

Hi Doug,

They are Lipo's, small and in the stern already!

Westquay
(Fleet Admiral!)





Forum Posts: 683
30th Jun 2018 09:18  
>> Permalink
mdlbt.com/43342

Is this the wunwinglo from Large Scale Planes?
If so, welcome to the other side.

Martin

RNinMunich
(Fleet Admiral!)





Forum Posts: 2229
30th Jun 2018 13:04  
>> Permalink
mdlbt.com/43347

Hi WWL, Hmmm! Can you perhaps squash in some bigger / heavier batts to lever the bow up?


Young at heart - slightly older in other places 😉 Cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
wunwinglo
(Lieutenant)





Forum Posts: 25
1st Jul 2018 00:12  
>> Permalink
mdlbt.com/43362

She's already low, so I am loathed to try this. and no this is not wunwinglo from large scale planes. I do small scale planes!

FloatingVoter
(Seaman)





Forum Posts: 4
1st Jul 2018 01:21  
>> Permalink
mdlbt.com/43364

Aren't you supposed to be riding over that bow wave not wallowing in it? If you have Lipo batteries you probably have brushless motors (kV? how many cells?) - try a smaller prop - much smaller - let the motors run free and show what they are capable of.

Bryan-the-pirate
(Captain)





Forum Posts: 61
1st Jul 2018 13:40  
>> Permalink
mdlbt.com/43373

i know that it is out of period but a front hydrofoil would lift the bow at speed.


Shiver my Timbers and Splice the mainbrace
wunwinglo
(Lieutenant)





Forum Posts: 25
3rd Jul 2018 09:16  
>> Permalink
mdlbt.com/43399

That is quite a good idea, right out of left field. Thanks, I will look into it.

wunwinglo
(Lieutenant)





Forum Posts: 25
3rd Jul 2018 09:37  
>> Permalink
mdlbt.com/43400

Hi Floating Voter,

I do so agree that I should be flying, not ploughing. In fact, she does plane quite well, but she is 'dirty' at very high speeds.I am concerned that sooner or later, I will have electrical problems, despite trying to be careful not to overuse the throttle.

She is fitted with 2 x JP EnErG brushless 600 O/R 1550 (C35 141), driving 38mm scale-type brass three bladers, contra-rotating. The pack is a 7.4 v, 30C lipo.