|
Post by Johansson on Jan 1, 2011 17:07:25 GMT -5
Anders, have you thought of using a 12/24/36 volt motor instead of the IC engine for your oilpump? If you only knew how much time I have spent trying to convince Olov to drop the IC pump motor and go for an electric oil pump, I can see why he wants to keep it but I still thinks that it is just another thing that might go wrong during the race. For the JU-01 engine I will use a Flojet 12V pump if it can keep the pressure high enough.
|
|
|
Post by racket on Jan 1, 2011 17:52:22 GMT -5
|
|
|
Post by Johansson on Jan 2, 2011 2:19:25 GMT -5
Good idea, I´ll keep it in mind in case my trusty old Flojet pump lets me down. At the moment I have lots of more pressing work to do on the engine but once it is assembled for running I´ll have plenty of time to build bullet proof oil and fuel delivery systems.
|
|
|
Post by stoffe64 on Jan 5, 2011 3:27:56 GMT -5
hello everyone! for us swedish AND others too ofcourse,another tip for oil pump is the SAAB99 77-82 the classic SAAB 99 2 liters engine,that engine had a combined pump-filter unit mounted to the side of the engine. best regards/stephan
|
|
|
Post by Johansson on Jan 5, 2011 13:20:56 GMT -5
Good idea Stephan, there should be plenty of old 99 spare parts around here. I´ll keep it in mind in case my Flojet pump fails.
|
|
|
Post by Johansson on Jan 17, 2011 1:14:21 GMT -5
Here is a short video of Olov testing the PWM controller, he has finished the manual ECU now so there is just some plumbing left before we can fire her up.
|
|
|
Post by racket on Jan 17, 2011 16:17:07 GMT -5
Hi Anders
Congratulate Olov for a very professional piece of gear :-))
Cheers John
|
|
|
Post by Johansson on Jan 18, 2011 0:59:34 GMT -5
Will do!
|
|
|
Post by Johansson on Feb 4, 2011 13:53:31 GMT -5
|
|
|
Post by racket on Feb 4, 2011 14:16:56 GMT -5
Hi Anders
That's a serious looking bit of gear , shouldn't have any problems making full distance this year :-)
Cheers John
|
|
|
Post by Johansson on Feb 4, 2011 16:58:17 GMT -5
It is definitively an advanced DIY engine compared to many others out there, unfortunately that means that there is 100 times more things that can go wrong during the race... ;D It feels like this is the year everything finally will go as planned, the last two years we have finished building like 15 minutes before the race it so it came as no real surprise when it broke down. This year we had most of the vital parts intact since last year and could focus on the ECU and improve a couple of parts like building a new afterburner and oil system. Yesterday Olov got his hands on a pair of spring steel runners for the kick so when it is finished it should be capable of very high speeds without handling problems. The ace in our sleeve this year is steer brakes, one brake lever at each handlebar manouvers a steel "claw" on each side of the kick so we can steer the kick by braking instead of using brute force like you normally do on a kick. They will also act as the main brakes once the race is run, we have a small parachute that we will bring in case more braking power is needed depending on how fast the kick turns out to be. Cheers guys!
|
|
|
Post by racket on Feb 4, 2011 17:33:04 GMT -5
Hi Anders
Yeh , I guess nice straight runners would be essential for performance , no wasted drag , otherwise it'd be like riding your bike with a flat tire and wobbling all over the place :-(
What sort of weight is the kick ??
Cheers John
|
|
|
Post by Johansson on Feb 5, 2011 3:46:28 GMT -5
Another thing that we found out during last years racing is that the two runners need to be cross linked so they stay parallel all the time, if not the runners might start to oscillate at speed.
We haven´t weighed it yet, but two guys can lift it without a problem so it should be somewhere around 100kg filled up and ready to go.
|
|
|
Post by racket on Feb 5, 2011 14:29:57 GMT -5
Hi Anders
No toe in or toe out , just a rigid platform , makes sense ....................100 kgs , nice and lightweight , better than a kart, should go well :-))
Cheers John
|
|
|
Post by Johansson on Feb 5, 2011 16:32:49 GMT -5
Another team with a modified GT generator ran an average of 110km/h over the measured kilometer with only 25kg thrust last year, so with our 50kg thrust and a much better frame I would be disappointed if we cannot run at least 150km/h this year. Preferably faster.
|
|