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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
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.
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 |
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|
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 |
||||||
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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 |
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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