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Transmission, Driveline, Hybrid Drive engineering | Forum profile
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Forum profile page for Transmission, Driveline, Hybrid Drive engineering on http://www.eng-tips.com.
This report page is the aggregated overview from a single forum: Transmission, Driveline, Hybrid Drive engineering, located on the Message Board at http://www.eng-tips.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "Transmission, Driveline, Hybrid Drive engineering" on the Message Board at http://www.eng-tips.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on Transmission, Driveline, Hybrid Drive engineering:
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Transmission, Driveline, Hybrid Drive engineering Posting activity graph:
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Top authors during last week:
user's latest post:
Purely mechanical system to give...
Published (2009-11-10 20:15:00)
I have no connection whatsoever with BYU, not being a Mormon and living on a different continent. I was trying to draw out some specialised comment on the variable gear subject from engineers who have worked in the theoretical PECVT field (and there are some). But it doesn't look like it is going to happen - the engineers in question either don't read this forum or are secretive about their work. It is probably best if I...
user's latest post:
Purely mechanical system to give...
Published (2009-11-10 08:47:00)
It's true that they may never exist, but I suspect that's because there is no market for them, not because they're impossible to make.
user's latest post:
Purely mechanical system to give...
Published (2009-11-10 18:38:00)
( Is this forum being used for peer review of a student project and if so does it contravene the no student posts policy of the site. , )
user's latest post:
Purely mechanical system to give...
Published (2009-11-10 18:15:00)
( Yes, it does seem to be something of an 'academic exercise'. How does your theoretical device handle moving off from a standing start while retaining positive engagment? It almost certainly relies on relative motion between a moving part and a stationary part somewhere, otherwise you could call it a Zeno transmission. , )
user's latest post:
Flywheel machining
Published (2009-11-02 20:58:00)
Actually, to Pat's comment, I think we are all anonymous here (except for the occasional Art M. who used his real name) and any advice given out (and taken) in an Internet chat room should be considered in that light. To my way of thinking, if you have to ask, you shouldn't be doing it. If you knew enough to know how to do it and do it right, you wouldn't be asking anonymous strangers on the Internet. I have...
user's latest post:
"lock tight" on...
Published (2009-11-05 14:01:00)
For fans of "Locktite". h ttp://www. pegasusaut oracing.co m/news-200 911.asp?ut m_source=2 00911& utm_medium =email& ;utm_campa ign=200911 Rod
user's latest post:
"lock tight" on...
Published (2009-11-06 23:58:00)
By the way, thanks (belatedly) to all who replied to the original post. Jim
user's latest post:
Purely mechanical system to give...
Published (2009-11-09 07:08:00)
Nemisis4, Napier built an aircraft engine using a series of tapered discs as a variable ratio drive for the supercharger. The engine was either the Sabre or Nomad if I recall correctly. This may provide some leads. Pete.
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Latest active threads on Transmission, Driveline, Hybrid Drive engineering::
Started 3 days, 12 hours ago (2009-11-08 22:28:00)
by MikeHalloran
( I recall a positive- drive infinitely variable bicycle transmission, announced maybe 20 years ago in the mechanical fish wrappers. I think it used radially sliding teeth on the crank sprocket, and a regular chain and hub. I don't recall ever seeing one in person. If you want us to download and read something, at least do us the courtesy of providng a link. , )
Started 1 month, 1 week ago (2009-10-03 21:14:00)
by ivymike
it's more typical for torque to be transmitted via friction in the joint than by shear in the fasteners (unless you want it to break). The fasteners smoosh the two parts together quite hard, and friction does the rest.
Started 3 weeks ago (2009-10-22 07:59:00)
by morris9791
Hi Guys, I forgot to add: Is just the total weight of the axle the normal way to size the mountings? The load case I used was stall torque; however this is an instantaneous application that will happen rarely. So I feel this approach may be overkill since the reaction forces I get from model are way bigger that that of axle weight alone. Any comments welcomed. Thanks Ed
Started 2 weeks, 2 days ago (2009-10-27 00:37:00)
by patprimmer
( What does the std one weigh. What are you hoping to achieve. The factory engineers decided on the stock weight for a reason, and it was not to make the car heavier and use more iron or steel. The weight they choose is based on compromise between qualities working against each other. Only you can decide how much you want to change that overall compromise. , )
Started 2 weeks, 6 days ago (2009-10-22 18:43:00)
by GregLocock
( "Has anyone carried out FEA analysis of an automotive flywheel before?" No, it has never been done before in the entire history of the world. I checked. Before building a model it is wise to consider what you want out of it. So what do you want out of it? Weight reduction? Explanation of a problem? NVH properties? The coefficient of friction of the plate is probably 0.3 , )
Started 2 weeks, 6 days ago (2009-10-23 09:05:00)
by patprimmer
( You need three things. A mechanic who has a clue. A new dealer who has enough ethics to be considered a suitable business partner. A good lawyer. From your description I cannot really tell exactly what the washer does, however I would presume that the end thrust or float on at least some gears on the main shaft might be out of control and interfere with selectors, mesh and syncro or ...
Started 2 weeks, 4 days ago (2009-10-24 20:47:00)
by TheDiletante
Sorry Chaps - I'm in the wrong section.
Started 3 weeks, 2 days ago (2009-10-19 15:21:00)
by ivymike
endplay of an internal shaft in an automotive transmission?
Started 2 months, 1 week ago (2009-09-01 04:40:00)
by GregLocock
( Does anyone ever put them the same side of the axle, in side view, as the rack? , )
Started 1 month ago (2009-10-12 01:19:00)
by patprimmer
( You only need to flop the ring gear over to change direction of rotation. This is possible inside all 90 deg drive differential housings I have ever seen. Much easier than trying to turn the complete housing over. , )
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Hot threads for last week on Transmission, Driveline, Hybrid Drive engineering::
Started 3 days, 12 hours ago (2009-11-08 22:28:00)
by MikeHalloran
( I recall a positive- drive infinitely variable bicycle transmission, announced maybe 20 years ago in the mechanical fish wrappers. I think it used radially sliding teeth on the crank sprocket, and a regular chain and hub. I don't recall ever seeing one in person. If you want us to download and read something, at least do us the courtesy of providng a link. , )
Started 1 month, 1 week ago (2009-10-03 21:14:00)
by ivymike
it's more typical for torque to be transmitted via friction in the joint than by shear in the fasteners (unless you want it to break). The fasteners smoosh the two parts together quite hard, and friction does the rest.
Started 3 weeks ago (2009-10-22 07:59:00)
by morris9791
Hi Guys, I forgot to add: Is just the total weight of the axle the normal way to size the mountings? The load case I used was stall torque; however this is an instantaneous application that will happen rarely. So I feel this approach may be overkill since the reaction forces I get from model are way bigger that that of axle weight alone. Any comments welcomed. Thanks Ed
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