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Type: Posts; User: Jimmy01

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  1. Replies
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    Hey guys, just a blatant plug for my thread in...

    Hey guys, just a blatant plug for my thread in the job openings section in case you are too lazy to scroll to the bottom of the page!

    If you are interested in working on designing/testing high...
  2. Replies
    1
    Views
    680

    Hey guys, just a blatant plug for my thread in...

    Hey guys, just a blatant plug for my thread in the job openings section in case you are too lazy to scroll to the bottom of the page!

    If you are interested in working on designing/testing high...
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    1,032

    Hey guys, I am alumni from the university of...

    Hey guys, I am alumni from the university of Auckland in New Zealand and am currently on a work trip in the Auburn Hils, MI area. I work for a Gibbs Technologies - we are currently testing and...
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    Hey guys, I am alumni from the university of...

    Hey guys, I am alumni from the university of Auckland in New Zealand and am currently on a work trip in the Auburn Hils, MI area. I work for a Gibbs Technologies - we are currently testing and...
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    Hey Tim, I'm going to have to disagree with you...

    Hey Tim, I'm going to have to disagree with you on this one:

    The wheel assembly will be spinning much slower than the crankshaft so its effective inertia will be reduced compared to faster...
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    We have had a similar issue in the past. R6 with...

    We have had a similar issue in the past. R6 with CDI and Autronic ECU. Our issue was related to the timing of tooth pulses - Or sync (cam) signal was occuring at almost precisely the same time as the...
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    If you are getting a lot of overflow oil, then...

    If you are getting a lot of overflow oil, then your tank design is the culprit. It is hard to fit a good tank on an Fsae car, i would suggest running about 2 liters oil (tank level not total system...
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    3,279

    Wow, I'm surprised so many people have had no...

    Wow, I'm surprised so many people have had no troubles with the electric water pumps. We have about 5 broken ones lying around, they pretty much all leak (although new design is better). An electric...
  9. Sounds to me like you have no idea why or what...

    Sounds to me like you have no idea why or what your doing here. Before you waste half of the year it would be worth making some higher level goals and then decide what you need to do/test in order to...
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    I have not looked in an Aprilia engine before but...

    I have not looked in an Aprilia engine before but the sprag clutch should be for the starter motor gear train. If you lock this up your starter will spin at 1,274,857,383,686 rpm when the engine is...
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    Your logic is fine, but I don't think 'weight'...

    Your logic is fine, but I don't think 'weight' should ever be used in an engineering context. Mass and forces are all you need.
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    I think you are getting yourself confused with...

    I think you are getting yourself confused with mass, weight and force.

    The maximum average force(F)(to keep acceleration under 20G) which the attenuator can apply is very easy to calculate:

    M =...
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    The short answer is NO. Without adding some form...

    The short answer is NO. Without adding some form of power into the system that is not your hand the amount of force is always dictated by the clutch spring stiffness, required travel and the ratio...
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    My experience with gerotors has been OK. They are...

    My experience with gerotors has been OK. They are used standard in Pace drysump pumps, and are also used as scavenge pumps in YZ/WR 450 engines so my assumption is that there is nothing fundamentally...
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    I was probably exaggerating a bit there but we...

    I was probably exaggerating a bit there but we have seen a significant difference between a 1 litre and 3 litre plenum on several occasions. It may have been the no plenum setup that halved power,...
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    Brendon, I think you're still missing the point...

    Brendon, I think you're still missing the point here, the throttle body controls the volume of air into the engine until the restricter allows no more. In the case of a large plenum, air is more...
  17. Thread: WR450 Starter?

    by Jimmy01
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    2,626

    The cases are the same between the yz and wr but...

    The cases are the same between the yz and wr but are machined differently to accept the different generators and starting mechanisms. I imagine you could make some slight mods to the cases so it will...
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    I disagree. Judges are more likely to be...

    I disagree. Judges are more likely to be impressed with someone who has done the calculations and understands what is happening (and can explain it) rather than pretty CFD pictures. Sure, an in depth...
  19. Thread: Dash boards

    by Jimmy01
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    4,411

    Our 2008 car has a cigarette lighter built into...

    Our 2008 car has a cigarette lighter built into the steering column support. Although no one in our team actually smokes, the plan was to use a 12V coffee maker to get the scrutineers in our good...
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    How about an fsae Wiki. We have our own team wiki...

    How about an fsae Wiki. We have our own team wiki and it works pretty well (although I'm pretty useless at updating it myself).

    This would make it easier for newbies to find information that has...
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    <BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Drew Price:

    Ans: Crossdrilled
    </div></BLOCKQUOTE>...
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    I could be wrong but I doubt any commercially...

    I could be wrong but I doubt any commercially available ECU is set up to look at two different engine speeds. It's certainly possible however it seems much easier/simpeler to just run two ECU's. The...
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    You probably should give up. For starters,...

    You probably should give up.

    For starters, unless you can remove boundary effects then you are going to lose more than 2% of max flow rate.

    Your restrictor should be feeding your plenum, not a...
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    That's a good explanation Wesley. As you say, a...

    That's a good explanation Wesley. As you say, a non-diverging duct will increase the pressure at the inlet and this is certainly not beneficial for flow. This isn't the best example but might help...
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    I would say that's all pretty sound logic! A...

    I would say that's all pretty sound logic! A diverging outlet duct helps reduce drag. I'm not sure how a diverging duct helps with our deltaP, my gut feeling would be that it wouldn't (but gut...
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