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 Critique my vacuum source. 
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
Bambi4010 wrote:
If you have 220v available this one gives a little more flow.

http://www.surpluscenter.com/item.asp?i ... 7&catname=

Note the flow numbers at about 44 inches of water. 56 cfm @ 59" vs 38 cfm @ 57"


Thanks Bambi,

I do have 220v 60a available. I can upgrade to 100amp if I can find a 100A Zensco breaker... Old house. :P

~Josh


Sat Dec 22, 2012 11:15 am
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Joined: Wed Mar 03, 2010 3:40 pm
Posts: 1271
Location: Melbourne, Australia
You will always be better off running 220 volt motors than 110 volt motors, because they will draw half the current for the same sized motor.
That makes it a lot easier on whatever you decide to use to electronically control the motor speed.

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Sat Dec 22, 2012 3:58 pm
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
Tony wrote:
You will always be better off running 220 volt motors than 110 volt motors, because they will draw half the current for the same sized motor.
That makes it a lot easier on whatever you decide to use to electronically control the motor speed.


Hi Tony,

Thank you for the reply! I called my electrician friend and told him that I was thinking of running two of the motors, and after reading him the specs on the 240v motors, he sounds confident that we can make it work. On a side note, I ordered Bruce's plans, and look forward to receiving them!

I've been reading a few books: "How to Port & Flow Test Cylinder Heads" by David Vizard, "Air flow & How To Get It" by Joseph DeAngelis, and will be picking up a copy of "Engine Airflow" by Harold Bettes when I get finished with the others. I've been messing with 2-stroke performance for quite a while, but even though these books focus on 4-stroke engines, I wish I had read them a long time ago!

If I ever get a nice big chunk of free time, I may post up some of my 2-stroke porting projects. :) It's fun to take these scooter engines that are born doing 30mph @ 50cc, and tune them into 74cc 65+MPH screamers. I should be into the 9 second territory in the 1/8 mile next time I make it to the drag strip. Best ET of the season is 10.283 - which is still lazy compared to a lot of the well-tuned bikes using the big name parts and tuners. I'm using decent parts, but most of them were found in the scrap bin. ;)

Cheers!

~Josh


Sat Dec 22, 2012 4:26 pm
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Areomyst wrote:
Tony wrote:
You will always be better off running 220 volt motors than 110 volt motors, because they will draw half the current for the same sized motor.
That makes it a lot easier on whatever you decide to use to electronically control the motor speed.


Hi Tony,

Thank you for the reply! I called my electrician friend and told him that I was thinking of running two of the motors, and after reading him the specs on the 240v motors, he sounds confident that we can make it work. On a side note, I ordered Bruce's plans, and look forward to receiving them!

I've been reading a few books: "How to Port & Flow Test Cylinder Heads" by David Vizard, "Air flow & How To Get It" by Joseph DeAngelis, and will be picking up a copy of "Engine Airflow" by Harold Bettes when I get finished with the others. I've been messing with 2-stroke performance for quite a while, but even though these books focus on 4-stroke engines, I wish I had read them a long time ago!

If I ever get a nice big chunk of free time, I may post up some of my 2-stroke porting projects. :) It's fun to take these scooter engines that are born doing 30mph @ 50cc, and tune them into 74cc 65+MPH screamers. I should be into the 9 second territory in the 1/8 mile next time I make it to the drag strip. Best ET of the season is 10.283 - which is still lazy compared to a lot of the well-tuned bikes using the big name parts and tuners. I'm using decent parts, but most of them were found in the scrap bin. ;)
Cheers!

~Josh


Josh,
First, scrap is good! Anybody can build with bushel baskets of $100 bills :lol: I love projects out of the ordinary where you cannot just go buy parts. That is why I am reviving my old Chevy Stovebolt 235 project.
On two stroke stuff have you seen this book? http://www.amazon.com/Two-Stroke-Performance-Tuning-Bell/dp/1859606199/ref=sr_1_1?s=books&ie=UTF8&qid=1356208396&sr=1-1&keywords=a+graham+bell+two+stroke this is a great book on two stroke and he also makes one for 4 stroke stuff. They are in my library also.


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Sat Dec 22, 2012 4:36 pm
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
Thanks for the kind words! I do have Bell's 2-stroke book, but I have not read the 4-stroke one. I'll have to check it out when time allows.

I did a quick search on Chevy Stovebolt 235, and it looks like a neat car! It looks easy to work on as well. My own car experience doesn't go far outside of the 2.0L Saab 900 Turbos that I used to own. Someday I hope to retire the minivan and stationwagon and get back into the turbo cars. SAAB also made some cars powered with 2-stroke engines that I'd love to someday get my hands on.

Cheers!

~Josh


Sat Dec 22, 2012 4:46 pm
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Joined: Fri Sep 28, 2012 2:10 pm
Posts: 7
Location: Holladay, UT
jfholm wrote:
On two stroke stuff have you seen this book? http://www.amazon.com/Two-Stroke-Performance-Tuning-Bell/dp/1859606199/ref=sr_1_1?s=books&ie=UTF8&qid=1356208396&sr=1-1&keywords=a+graham+bell+two+stroke this is a great book on two stroke and he also makes one for 4 stroke stuff. They are in my library also.


AG Bell also has a forced induction book that I have along with the 4 stroke book. All very good references.

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Wed Dec 26, 2012 4:07 pm
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Wheeljack wrote:
jfholm wrote:
On two stroke stuff have you seen this book? http://www.amazon.com/Two-Stroke-Performance-Tuning-Bell/dp/1859606199/ref=sr_1_1?s=books&ie=UTF8&qid=1356208396&sr=1-1&keywords=a+graham+bell+two+stroke this is a great book on two stroke and he also makes one for 4 stroke stuff. They are in my library also.


AG Bell also has a forced induction book that I have along with the 4 stroke book. All very good references.


I'll have to get that one also. I like his writings.


Wed Dec 26, 2012 4:17 pm
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Joined: Wed Mar 03, 2010 3:40 pm
Posts: 1271
Location: Melbourne, Australia
I have both the "Four stroke performance tuning" book, and the "Forced induction performance tuning" book.
Both highly recommended reading.

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Wed Dec 26, 2012 4:31 pm
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Hi Tony and thanks!


Wed Dec 26, 2012 8:02 pm
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Joined: Tue Jan 03, 2012 12:05 am
Posts: 15
How about:
http://www.surpluscenter.com/item.asp?item=16-1448&catname=


Sat Aug 03, 2013 10:52 pm
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