Jennings

Does anyone else just love reading 2 stroke tuners handbook? I can't get enough, every time I read it, I understand so much more about how my engine is designed to work. I wonder if he ever imagined that his work would become the bible to a moped revolution?

Re: Jennings

yeah, thats a great book. ive learned most of the things i know about 2 strokes from that book.

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Yes, I love it with all of my body including my peepee

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I actually a menu button for it on my iPhone for quick access.

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wait till you've read bell and blair, bell is a much more simple holistic view, G.P. Blair is full of intense math. Do you like math?

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shit talkin' hippy /

yeah, bell is jennings 2.0, then Blair, uhg, math indeed

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Oooh! I've glanced at Bell, but never heard of Blair! I want to like math!

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Math = two stroke, sadly. If you fail at the math and geometry, you fail at the next level of tuning.

Any links to Blairs book? I'm really interested in what he has to say about cylinder porting.

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Quatto, how did you put it on your iphone? I needs to know.

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Yeah, I wanna see some links to this Blair stuff. Not that I like/understand math/tuning, but it'd make a good addition to the wiki.

Re: Jennings

Gordon Jennings changed my life. I've wanted to start Bell, but haven't just yet. How is it better? Does it just describe/analyze the larger system, instead of studying each component in depth the way that Jennings does?

Re: Jennings

iPhone: jailbreak tweak lets Safari open local files, then make a bookmark link.

Re: Jennings

hoooray math!

Re: Jennings

i saw blair's book and paged thu it is basically just a bunch of math equations. You might find some good info in there but ultimately not going to be as helpful as the other 2 books.

it starts to get a bit to much into specifics of certain bikes and setups. For old little bikes using points and without gears like ours alot of it is just not applicable.

equations are still only as accurate as ur grinding hand, and ur building skill in the end, i find simple math helpful as a starting point, but ultimately trial and error will serve u better when it comes to mopeds.

even in bell's book he says the exact exhaust numbers are all highly secretive and making perfect pipes is somewhat of an art.

many tuners say the same about needle selection, and portwork is definitely more of an art, especially on a moped where u basically start with complete crap. its best to understand how to design a 2 stroke motor rather than what those books tell u about portwork on existing bikes that already rip. Mopeds are so restricted from the factory u might as well start with a chunk of metal lol. I think that's the one point that all the 2 stroke books are missing, and what sets mopeds into their own tuning category.

Re: Jennings

rj, can i borrow your jennings? i've been wanting to read it forever!

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Bell and Blair?

What?! I've read 2-Stroke, and it helped me so much.

What are these other two?

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shit talkin' hippy /

bell goes over pretty much the same stuff as jennings, just better and not from the 70s... it is pretty easy to get ahold of, like 25 dollars on amazon, but blair is something like 100 dollars but comes with software and shit

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shit talkin' hippy /

I think his formulas are the ones used for MOTA

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Jennings is amazing, I had many misconceptions about 2strokes and engines in general that he cleared up. I really like that the concepts are laid forth as "What" and are then backed up by the "Why".

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What are the names of the books?

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found a new resource- a little different, a little controversial, but still new. Most of the work and writing is about dirt bike and off road, 125cc and up, but hey some of it is useful, and, well, new.

"Eric Gorr":http://www.eric-gorr.com/ and his chapter on 2 stroke top end is available as a .pdf, along with the carb chapter. Interesting reading, and it doesn't read like a 60's school book. I haven't looked at his mini and pit bike book yet- the library here just has the Motocross & Off road book

Re: Jennings

i looked at it then was like no way am i reading all this. used sections of it. i should try to read some more i guess.

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