Search found 67 matches

by dplecko
Thu May 18, 2017 11:33 pm
Forum: Australian Event News
Topic: Four Tracks for 2018
Replies: 22
Views: 9659

Re: Four Tracks for 2018

Agree with everything Bones said (...I can do 122.5 mph and be off the track before the one mile...) Before we contemplate 4 tracks, and with the utmost respect, Track 2 has never been 'fully' operational - not timed over 1 mile, sometimes GPS only, sometimes just outright closed, return road not op...
by dplecko
Wed Jul 13, 2016 10:53 pm
Forum: General Information
Topic: Travel from WA
Replies: 7
Views: 4034

Re: Travel from WA

Here is a mud map via Minnipa. Apparently it's missing a triple caution right hand turn...but so long as you have reasonable brakes you won't get lost. There has to be a very good reason for us to stop at road roadhouses that don't serve high flow diesel. Minnipa has fuel but is only open 'office ho...
by dplecko
Tue Jun 14, 2016 8:14 pm
Forum: FOR SALE
Topic: APS-G 100
Replies: 8
Views: 4603

Re: APS-G 100

Assuming zero tailwind, how much RWHP would be required to achieve 128mph in that chassis, or to rephrase the question do you have any Cd or CdA estimates? 8)
by dplecko
Fri Feb 19, 2016 10:17 am
Forum: Build Diaries
Topic: 125cc 2stroke special construction
Replies: 20
Views: 9348

Re: 125cc 2stroke special construction

Don't worry about the weight. Lack of weight will not help here-- maybe when you are loading or unloading the bike. You guys have a lot more experience on the salt than me but my understanding is that with relatively low powered bikes the rolling resistance becomes a factor to look at and a lighter...
by dplecko
Tue Jun 30, 2015 8:52 pm
Forum: Engine Development and Performance
Topic: Billet CNC Turbo Exhaust Housing
Replies: 2
Views: 2780

Re: Billet CNC Turbo Exhaust Housing

Yes back pressure was a bottleneck with the original, deciding how much to increase the A/R was the challenge. Think I got it almost spot on, boost threshold is damm close to what my spreadsheet predicted. The motor is much 'happier' now, boost pressure is higher than exhaust pressure.
by dplecko
Mon Jun 29, 2015 1:09 am
Forum: Engine Development and Performance
Topic: Billet CNC Turbo Exhaust Housing
Replies: 2
Views: 2780

Billet CNC Turbo Exhaust Housing

A few dyno pressure measurements and some engine simulation determined that a different sized turbine housing was drastically required. The factory has no turbine housing A/R options available for this particular turbo so I had no choice but to make my own. I considered 3D printing lost plastic cast...
by dplecko
Tue Apr 14, 2015 9:02 pm
Forum: Australian Event News
Topic: Lake Condition for March 2015
Replies: 96
Views: 42640

Re: Lake Condition for March 2015

Not sure when the results of this new NASA mission will be available, but it will no doubt will be of benefit to many including DLRA. Seems to be in test and calibration mode at the moment but the outcome is promising: 'SMAP to map the entire globe with high-resolution ([edit: soil] moisture) radar ...
by dplecko
Mon Mar 16, 2015 8:59 pm
Forum: Australian Event News
Topic: Internet at the Lake 2015
Replies: 7
Views: 5177

Internet at the Lake 2015

Optus has kindly sponsored a VSAT terminal for our use at speedweek this year. I have organised an event grade Wi-Fi setup to compliment it. The response from my personal adviser: "I'll have to bring my iPad charger". I know this will spoil some of the feeling of 'getting away from it all', but I am...
by dplecko
Mon Mar 16, 2015 7:22 pm
Forum: Australian Event News
Topic: Lake Condition for March 2015
Replies: 96
Views: 42640

Re: Lake Condition for March 2015

Someone has the interweb sorted for speed week 2015. I also have organised a two sector Wi-Fi setup that should cover most of the pit area.

https://www.facebook.com/POST100/photos ... 25/?type=1
by dplecko
Fri Feb 27, 2015 12:00 am
Forum: General Information
Topic: Transport from Perth to Lake Gairdner and back
Replies: 17
Views: 8353

Re: Transport from Perth to Lake Gairdner and back

Hey Rick, nice to meet you guys yesterday.

Allan, small world! Your BSA in the background....sorry about the rocks and dinky toys I put down the exhaust pipe...and looks like your are about to be lapped:
Image
by dplecko
Tue Feb 24, 2015 7:07 pm
Forum: Australian Event News
Topic: Startline Volunteers Needed
Replies: 25
Views: 10910

Re: Startline Volunteers Needed

Lol...
Image
by dplecko
Fri Feb 20, 2015 11:47 pm
Forum: Australian Event News
Topic: Startline Volunteers Needed
Replies: 25
Views: 10910

Re: Startline Volunteers Needed

I really don't want this to be taken the wrong way, but it will no doubt be more difficult to fully compare flying 1/4 mile times with flying 1 mile times such as the approximate (small bike) comparisons in this graph below. It has been discussed to extend the track 2 finish point by half a mile to ...
by dplecko
Sun Jan 25, 2015 7:58 pm
Forum: Chassis, Suspension and Saftey
Topic: Slicks on salt
Replies: 5
Views: 3708

Re: Slicks on salt

I had about 2 % wheel 'slip' in top gear last year with a small bike detuned to 35 HP and slicks. They were the only things I could find with a high enough speed rating.
Hope that helps,
by dplecko
Sun Nov 09, 2014 7:08 pm
Forum: Engine Development and Performance
Topic: Engine simulator
Replies: 7
Views: 4825

Re: Engine simulator

Hi Gary, Screenshot of my own home brew spreadsheet simulator. The plots are the simulation of HP & boost vs actual dyno and datalog. There is not a lot of science behind it, simply VE% x RPM x density. Reasonably accurately simulates boost onset and turbine AR changes. I find it very useful, it plo...
by dplecko
Tue Oct 28, 2014 12:30 am
Forum: Engine Development and Performance
Topic: Engine simulator
Replies: 7
Views: 4825

Re: Engine simulator

Very glad someone asked about an engine simulator, have been meaning to ask for some time. I have played with both Dynomation & Performance Trends Engine Analyser since the very first DOS versions in the 1980's, and both the current Windows versions. Not overly convinced that either asks all the cor...