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MANUKAU MODEL POWER BOAT CLUB Inc

 

Web Site:

HTTP://homepages.paradise.net.nz/nickbree/mmpbc/

Venue: Wattle Farm Rd Pond Manurewa

2nd & 4th Sunday of each month from about 10.30 am

 

President:        Malcolm Miller                         Editor   Chris Breen

                        93 Sykes Rd                                         12 Sunset Rd

                        Manurewa                                           Glenfield

                        Ph 268 2742                                          Ph 4445 482                  Jan/Feb 2003

 

HOT NEWS

Driver’s Stand

Now fully operational (Editor’s note; Well, except for the vertically challenged – it still needs a little more fill)

Baby Boy

Congratulations go to Tony Bella & partner Leah….Dillon

CLUB CHAMPS

Coming soon…….

AGM

AGM and Prize Giving will be in JUNE so any remits on Club racing and Rules etc should be presented in writing (E-MAIL) to the Club Secretary/Editor

TECH NOTES

How many balls should you have? Following discussion was on the rcboat.com lisbot. Please pardon my editing.

 

I know someone that swapped his 5 ball crank bearing (behind the flywheeel) for an 8 ball bearing (new housing required) saying they were better at handling the load. He's worried about the thrust load of the prop pushing on the crank bearing.   Any truth to this? Dan_Cousin

 

I've had trouble with bearings with more but smaller balls coming apart.   Some on the first day of use.   They now scare me! Mark_Hopper

Text Box:  

Brett’s Stepped mono

Mark that sounds very typical of the Nova Rossi Long Stroke Bearings that are an after market product. This bearing has more balls and they are smaller than the OEM bearing from Nova Rossi. If you stay with the OEM bearing in the Nova Rossi package you have a better bearing while still not the greatest it is the best of the 14 x 25.4 bearings they are also pretty expensive. I have found out who makes the OEM for Nova Rossi but I have not been able to find out who makes the after market bearing. The smaller balls in this particular after market bearing tend to skid much more than the OEM bearing does which in turn brings about premature failures such as Mark states. Ron Byrd

 

Smaller and more is not better is absolutely right.. In the turbine engine world we now have bearings where they went from eight to five balls to stop skidding and spalling.. We are able to watch ball passage frequency in these engines now and at one time you could see where they were not turning. Went to less balls and the problem went away. The loads on these is critical to make sure all the balls are turning. Ohh and by the way we have some of the parts in there with these bearings turning over forty five thousand RPM. The oil goes in at two hundred degrees and comes out the other side of the bearings at four hundred degrees. (synthetic oil) John_Ackerman

 

John!   Do you just remove 3 balls? DonKaeding

 

That would not be recommended. Ron_Byrd

 

Nope.. just look for a bearing with less balls is all.. John_Ackerman

 

Doesn't the problem of slipping and spalling and reading the ball pass freq have to do with internal clearances and types of lubrication. You have to know the inner and outer ball pass freqs to determine slip. I know that we weeded out bad bearing from the factory before they where installed by taking the readings and knowing the failier levels. It was surprising how many bearings are bad before being installed. Ron_Hartley

Torque Values for bolts

A previous newsletter discussed use of a torque wrench for engine assembly, I have since found this reference on torque values for our common bolt sizes

TORQUE TABLE

Screw Size

Torque (inch pounds)

2 mm

5-7

2-56

6-8

2.5 mm

8-10

4-40

10-12

3 mm

12-14

6-32

15-17

4 mm

18-21

8-32

19-23

5 mm

20-24

10-32

22-26

¼ -32 glow-plug

18-20

Source: RC Boat Modeller October 1997

Racing in December

The weather again wasn’t practical for Scale Hydros so we went straight into Class I sprint racing. We had 6 entries with Romper-Stomper and Skulduggery taken top honours with 39pts each. Victory was 3rd on 19pts followed by Ballistics on 17pts with, Express and L&P on 10 & 9 points.

The Enduro for Class I was up next and Skulduggery took this out from Dean, this time driving Drago II. Bruce driving Victory was 3rd followed by Ballistics.

Graham and Brent did some testing with their new boats and both were very impressive.

Club Open Day January

8 members turned up last Sunday taking the opportunity of the brilliant weather to try out their boats and get them ready for the first round of 2003 on the 9th February.

Bruce had his new class II Cat REACTOR all ready for its maiden voyage and showed a lot of promise. Jason ran COCA COLA but you could see he was looking a bit worried as he knows that once Bruce has his boat sorted out he will be a major threat.

Chris ran LLUMER WINDOW & FILM and looked very impressive. Chris also ran L&P and said he had finally sorted out his drive cable problems.  

Text Box:  

“VICTORY” at speed

Adrian did a couple of runs with LAMBORGHINI and looked very impressive and fast!!!! Tony and Merv took their Cats out for a duel and they both had picked up some speed with Tony’s EXCITER just having the legs on EXPRESS. When Merv stops his boat from running so wet he could become a threat to the front runners. Dean has been playing around with props on ROMPER STOMPER and has also picked up a turn of speed and is now eyeing a top spot in next months Club race. Malcolm ran his newly repainted MILLER HIGH LIFE with his rebuilt MAC 67 and AB-MAC quiet pipe and the boat looked really fast and ran a lot quieter to what we had been use to in the past. Needless to say that with Malcolm’s grin from ear to ear, he was happy with the performance. Malcolm also ran SKULDUGGERY and this was a rocket and I reckon must be one of the fastest D V’s in the country. Unfortunately on his last run the motor expired or should I say broke in half, this being the 4th or 5th time this has happened! Are we looking at a stronger motor (CMB etc) or is it a new boat??

Some Very Good Web Addresses

propeller theory

http://www.boat-props.com/prop_basics.html

Also an EXCELLENT site for the petrol guys – I mean it, this site is SUPERB

Covers coil testing, carb tuning and mods, trim tabs, turn fins, IV fuel tank set-up etc etc etc

http://www.shark-racing.com/Ingles/Sobrenosing.htm

What is a IV fuel tank I hear you ask – see pics below:

Points

Class I Endurance

   

40.85

Malcolm Miller

98

SKULDUGGERY

40.71

Brett Harrison

61

BALLISTICS

29.925

Chris Breen

13

L & P

40.985

Adrian Milanesi

32

LAMBORGHINI

27.145

Graham Doggett

49

OHIO STEEL

40.83

Glen Sayers

 

BLUE DEALER

29.985

Wayne Lester

 

TBA

27.175

Phillip Leach 1

4

PSL CONSTRUCTION

40.79

Tony Belle

41

EXCITER

27.225

Bruce Burns

13

VICTORY

40.97

Jason Lester

9

COCA COLA

27.255

Brian Nesbit

 

PUSSY CAT

26.975

Dean Harris 1

53

DRAGO II

40.915

Tont Kockett

24

SPYDER

27.195

Dean Harris 2

 

ROMPER STOMPER

27.175

Phillip Leach 2

8

TWIN

Class I Sprint Racing

 

40.85

Malcolm Miller

237

SKULDUGGERY

40.71

Brett Harrison

177

BALLISTICS

29.925

Chris Breen

163

L & P

40.985

Adrian Milanesi

157

LAMBORGHINI

27.145

Graham Doggett

122

OHIO STEEL

40.83

Glen Sayers

92

BLUE DEALER

29.985

Wayne Lester

25

TBA

27.175

Phillip Leach 1

39

PSL CONSTRUCTION

40.79

Tony Belle

62

EXCITER

27.225

Bruce Burns

47

VICTORY

40.97

Jason Lester

54

COCA COLA

27.255

Brian Nesbit

 

PUSSY CAT

27.095

Peter Wright

31

OBSESSION

26.975

Dean Harris 1

65

DRAGO II

40.915

Tony Cockett

37

SPYDER

40.81

Merv Sowden

38

EXPRESS

27.195

Dean Harris 2

67

ROMPER STOMPER

27.175

Phillip Leach 2

 

TWIN

1/8 Scale Hydroplane Racing

 

Competitor

Hi Points

Boat Name

 

Glenn Sayers

145

YORK

 

Merv Sowden

162

MISS BUDWEISER

 

Chris Breen

96

LLUMAR FILM

 

Malcolm Miller

109

MILLER HIGH LIFE U00

 

Terry Wilson

27

ULTRA BOLD & DASH

 

Jason Lester

31

WINSTONE EAGLE

 

Class II Enduro Racing

 

27.095

Peter Wright

 

OBSESSION

29.865

Glen Sayers

 

STEVES MODEL SHOP

29.825

Bruce Burns

 

RED DEVIL

29.985

Jason Lester Coca

20

COCA COLA

29.985

Jason Lester Bud

10

BUD LIGHT

Class II Sprint Racing

   

27.095

Peter Wright

20

OBSESSION

 

29.865

Glen Sayers

18

STEVES MODEL SHOP

 

29.825

Bruce Burns Red

28

RED DEVIL

 

29.825

Bruce Burns Ally

8

ALLY

 

29.985

Jason Lester Coca

10

COCA COLA

 

29.985

Jason Lester Bud

29

BUD DRY

 
                 

FOR SALE/WANTED COLUMN

 

I am looking for a second –hand boat.

I am also looking for a lower half for a k&b 3.5 outboard.

 

Thanks

Damien Davis

Adelaide Operations

 

Email   This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone   (08) 8447 9717

Fax       (08) 8447 7277

 

 

Next Race day is February 9th

Next Testing day is February 23th

 

REMINDER – CLUB MEETING FRIDAY 7th Feb 7.30 @ Cosi Club Sykes Rd Weymouth

 

Chris Breen – Editor

F:\My Documents\CHUFFS\mmpbc\january2003\jan2003newsletter.doc