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  1. Orson_Yancey

    Would OldMiniBikes like to have a forum for PhatMoto and other motorized bicycles?

    A separate forum within OldMiniBikes dedicated to PhatMoto sounds good. Many of the PhatMoto owners are looking for engine and drive train upgrades. OldMiniBikes has good forums on engines. In my opinion, a flat head engine is the perfect engine for a PhatMoto. The PhatMoto All Terrain is the larger frame.
  2. Orson_Yancey

    Would OldMiniBikes like to have a forum for PhatMoto and other motorized bicycles?

    Hello Community, I have been researching the PhatMoto Rover and All Terrain motorized bicycles. These motorized bicycles have engine and drive trains similar to mini bikes. I. e. a bolt-on 4 cycle engine and a centrifugal clutch. The community of PhatMoto people is growing fast. I believe...
  3. Orson_Yancey

    Interesting things you find in a

    For vertical shaft lawnmower engine.
  4. Orson_Yancey

    Rupp RTM 80 transmission oil ?

    Air compressor oil is 30 weight non-detergent.
  5. Orson_Yancey

    Chaparral st80 cc 1972 oil change help

    Air compressor oil is 30 weight non-detergent.
  6. Orson_Yancey

    What years did Tecumseh place points under the flywheel but external coil outside above flywheel?

    Hi, In the 1960's and 1970's, Tecumseh used a magneto (points, condenser, and coil) located behind the flywheel. And I understand that it is difficult to change these engines over to electronic ignitions. By about the mid-1980's, Tecumseh changed over to electronic ignition, (CDI solid...
  7. Orson_Yancey

    About what year were emissions carburetors introduced?

    Hi Folks, I know that the minibike community is made up of some of the most knowledgeable small engine people--CFH, Markus,.... About what years did Tecumseh and Briggs introduce emissions carburetors? Maybe the mid-1990's? I collect and work on snowblowers. I am thinking of phasing out...
  8. Orson_Yancey

    Tecumseh HS40 HS50 connecting rod improvement thoughts

    Hi CFH, I have the late Tecumseh manuals set and many of the Factory Training Tecumseh Updates 200X that were published each year up to about 2008, when Tecumseh went out business. Here is my understanding: The original HS50 was renamed LH195SA Then about 2006 or so, Tecumseh manufactured the...
  9. Orson_Yancey

    Thread To Discuss The Briggs & Stratton Co. Re: Filing Bankruptcy

    I want to start a thread. As many of you probably already know, Briggs filed bankruptcy on July 20, 2020. I hope that there is some way that Briggs can come-out of bankruptcy and survive. I hate to see an American Icon disappear. Many of us grew-up with these engines as part of our most...
  10. Orson_Yancey

    Some Tecumseh Seal removal driver tool kits on Ebay right now

    Hi Skipp, Dave, I plan to purchase the kit from Markus as described above. If it saves Markus some time, I am happy to photocopy the sheet and send you a paper copy my USPS. Please feel free to send me a PM and then we can communicate by electronic mail. Orson
  11. Orson_Yancey

    Some Tecumseh Seal removal driver tool kits on Ebay right now

    Hi Markus, Yes, I am interested in purchasing. Let's talk by PM. Orson
  12. Orson_Yancey

    Some Tecumseh Seal removal driver tool kits on Ebay right now

    Hi Skip, Yes, that is the large Tecumseh took kit for almost all general repairs. I have see tool set numbers of 670195[C,D,E,F]. I found this number in my Tecumseh Service Tools manual, Form No. 694862 R5/00 I last saw that tool kit for sale in about 2008, but the kits I saw were missing...
  13. Orson_Yancey

    Building my first mini bike from scrach!

    Please have plenty of air circulation while welding galvanized steel. Drink a great deal of milk 8 hours before and 8 hours after, will help your body get rid of the zinc oxide, in your blood stream. The zinc oxide will cause flu like symptoms. The old timer welders taught me about drinking...
  14. Orson_Yancey

    Some Tecumseh Seal removal driver tool kits on Ebay right now

    Two or three seal removal and driver tool kits are for sale on Ebay. One of them states that the Kit number is 691301 kit These kits have about 15 pieces. Come in a small red box, dimensions about 6" x 10" by 5". From reading the directions included in another similar kit, it mentions...
  15. Orson_Yancey

    Tecumseh obsolete parts

    Hi Markus, It is interesting that you mention the flywheel knockers. The Tecumseh thread knockers are another brilliant Tecumseh invention! I use mine often for getting a part Jeep suspension and steering components. I own four sizes. From what I can tell, the SAE thread four sizes are all...
  16. Orson_Yancey

    1971 Rupp Hustler - same engine as 70 Roadster?

    I have often wondered what was the Tecumseh warranty on a Black Widow engine? I would think that Tecumseh told Rupp "you are removing the governor at your own risk". Does anyone happen to know how high the Black Widow engine rev'ed? Does anyone have knowledge of what percentage of the Black...
  17. Orson_Yancey

    Cheezy1 1969 Harrison

    Hi Cheezy1, Over the years, I have gotten in the habit of making detailed lists. I end up having so many interruptions while working of several projects. The lists help me "timeshare" between multiple projects, reduce the stress of worrying about putting something together wrong or leaving...
  18. Orson_Yancey

    Tecumseh obsolete parts

    Since 1000's of people are working on these engines, Tecumseh had offered a couple of specialized tool kits. I used to see the specialized tool kits available from various sellers for a year or two after 2008. But I have not see any for sale in recent years.
  19. Orson_Yancey

    Tecumseh engine builder

    Hi Gdiddy58, A lot of good information here on minibikes and engine building. http://www.pinrepair.com/minibikes/ http://www.pinrepair.com/minibikes/tecumsehmb.htm His e-mail address is on the website. Good luck and please let else us know about your progress.
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