1972 Ossa Pioneer

Discussion in '2 smokers' started by pfetter, Jul 21, 2014.

  1. Mr. Carts

    Mr. Carts Been here awhile

    Joined:
    Jan 14, 2010
    Oddometer:
    411
    Location:
    Cahuilla Mountian
    The ignition side of the Motoplat is separate from the lighting side.

    Use this is you want 12 volt lights.
    AC Voltage Regulator
    [RS610203]

    http://www.rickystator.com/catalog/voltage-regulator-p-85.html

    This one if you want to charge a battery.

    Single Phase Rectifier/Regulator
    [RS20403S]

    http://www.rickystator.com/catalog/single-phase-rectifierregulator-p-88.html

    I run Lucas TC oil @ 20-1 this is what the factory said to mix at.

    I do not know what happened to Matts Nybergs site but it was THE Ossa info site.

    Here is the link but it is not working right now.
    http://hem.passagen.se/ossa/
    #21
  2. pfetter

    pfetter TCretro

    Joined:
    Mar 2, 2007
    Oddometer:
    59
    Location:
    Traverse City, Michigan

    Thanks for the info.
    #22
  3. flei

    flei cycletherapist

    Joined:
    Apr 1, 2013
    Oddometer:
    5,802
    Location:
    Western Mass.
    Yup. Jim Hoellerich's private collection is one of the most incredible things I have ever seen (and I have traveled quite extensively around the world). And I don't mean incredible for bike-related things, just plain incredible! And I don't mean just for a local sight, I mean for ANYWHERE! How one man, a rural dairy farmer, with a personal interest in old (mostly) Spanish dirt bikes, spurred on by the ISDT taking place in his "backyard", built this collection is just awe- inspiring. Every bike is as good as new (or better) and runs. When asked how he did it, he replied (in his droll Yankee accent), "I never watched TV". No, he just worked the farm from sun-up until after sun-down, then lovingly rebuilt these bikes and collected the artifacts. He isn't some rich guy like Leno or Seinfeld who just bought some bikes, etc. to create a collection. You have to see it to believe it!
    #23
  4. pfetter

    pfetter TCretro

    Joined:
    Mar 2, 2007
    Oddometer:
    59
    Location:
    Traverse City, Michigan
    You guys have been very helpful so far. I now have a question that in Michigan especially in my area they say I should have a US Forestry Approved Spark Arrestor. About the only one I can find is one from FMF Racing, I called them and they do not make one specifically for the OSSA Pioneer, they said to order the universal fit and I would have to possible make an adapter pipe (which would not be a problem). Question is have any of you found a Forestry Approved Spark Arrestor for use on a Pioneer.
    #24
  5. Mr. Carts

    Mr. Carts Been here awhile

    Joined:
    Jan 14, 2010
    Oddometer:
    411
    Location:
    Cahuilla Mountian
  6. Zuber

    Zuber Zoob

    Joined:
    Sep 28, 2004
    Oddometer:
    3,426
    Location:
    Main Street, Shedd, Oregon
    I worked at a Ossa shop in 1972 when these were sold new. I rode a 175 Pioneer at one enduro. Had a MAR. Our shop even had Mick over two year's in a row to put on Trials Schools and a trials even. Great bikes.

    Your's looks great. It has the later exhaust, I remember that the 1972 model still had a chrome muffler that was held on with a spring and you could pull it for 'off, off-road'. We would saw that newer muffler off and just run the pipe. It was not very loud, sounded good.

    The petcocks and carb float needles really sucked on these bikes. But, the ignition was weed burner strong. Several stories.

    A racer/customer wanted to check the spark on a pioneer, the spark plug was on the right, kicker on the left. Well, I kicked too soon, before he got the plug grounded. He was holding the plug in his fingers and his fingernail was touching the fins. The ignition burned a 1/16" hole in his fingernail and his thumb was numb for a day or so.

    The big shop in town sold Yamahas. The DT-1's were very popular, but they had points and a terrible seal on the ignition cover. You'd often see a crowd on the trail trying to get these sparking again. All the owners were experts on cleaning points, plugs and sealing covers or they walked a lot. Our little shop sold Ossa's and when ever the boss saw someone show up on a DT-1, he would show them the hell fire ignition. In front of the customer he would pull the spark plug and cover it with chain lube. It would be foamed up really high where you couldn't even see the end of the plug. Then he would put it back in and start the bike with one kick. I saw one DT-1 owner actually reach for his wallet and start counting out bills without saying anything.

    The leaky petcocks, leaky brass float needles and hell fire 6 pole Motoplat ignition made the transmission bearings go out. What? How would that happen? Well, they would fill the sump with gas overnight. It would always start and run. It would overpressure the bottom end and pump gas out past the crank seals, usually most would go into the transmission. It would over fill the trans with gas and the excess would go out the vent, which was directly over the counter shaft sprocket onto the chain. Once the bike heated up the gas fumes would evaporate and the trans lube would drop. Then the bearings would fail. Replace the carb with a Mikuni and the transmission would last for a long time.

    Got lots more...
    #26
  7. nsu max

    nsu max Been here awhile

    Joined:
    Dec 31, 2008
    Oddometer:
    399
    :lol3
    #27
  8. nachtflug

    nachtflug infidel

    Joined:
    Jan 23, 2002
    Oddometer:
    51,033
    Location:
    Harrys place
    :thumb

    been there twice. chatted with him @ Unadilla VMX this past June. I know he had an 1150GS but now is riding an 800. The guy is the real deal. What blows me away more than the bikes are the photo's on the wall. They are all 70's, a lot of local shots with helmets off just post race bench racing. Really took my breath that is my time and seeing pictures like that blow me away.
    #28
  9. pfetter

    pfetter TCretro

    Joined:
    Mar 2, 2007
    Oddometer:
    59
    Location:
    Traverse City, Michigan
    I finally was able to take the Ossa out in the woods for the first time since I got it. When I got back I pulled the plug to see how it looked and it was pretty black and oily looking. What is the best way to lean it out some. It is running a b8es and the Lucas oil is mixed 30 to 1. Any suggestions.
    #29
  10. Mr. Carts

    Mr. Carts Been here awhile

    Joined:
    Jan 14, 2010
    Oddometer:
    411
    Location:
    Cahuilla Mountian
    Check the trans oil level to make sure the seals are not leaking.
    #30
  11. sjc56

    sjc56 Long timer

    Joined:
    Oct 26, 2006
    Oddometer:
    1,711
    Location:
    Broad Brook CT USA
    I would love to have one of these, makes my F7 look like a mini bike.
    #31
  12. pfetter

    pfetter TCretro

    Joined:
    Mar 2, 2007
    Oddometer:
    59
    Location:
    Traverse City, Michigan
    I changed the gearbox oil and what I took out was the correct quantity. I lowered the needles (raised the clips) and going to take it out again tomorrow and then see if it runs any leaner. I completely disassembled the carb and soaked them in my carb cleaning tank rinsed them off and blew all jets out. I also installed a FMF forestry approved spark arrestor.
    #32
  13. pfetter

    pfetter TCretro

    Joined:
    Mar 2, 2007
    Oddometer:
    59
    Location:
    Traverse City, Michigan
    Check back later fall or spring after I get all the bugs out of it and happy with everything it will be going up for sale.
    #33
  14. shojimon

    shojimon Been here awhile

    Joined:
    Aug 23, 2004
    Oddometer:
    148
    Location:
    Olalla, WA
    I had a lot of fun on a Yankee Z back in the 70's- never saw a red one though! A few years ago I looked for one but it seems like about 5 guys have every one ever made....!
    #34
  15. Solaros1

    Solaros1 Long timer

    Joined:
    Dec 20, 2005
    Oddometer:
    1,581
    Location:
    Roswell, GA
    Like a dummy I painted it red - the factory decals were chipping off and once I sanded everything smooth I thought it would look good in red. It was the mid 1970's and these weren't as desirable back then. Only real enthusiasts even knew what they were.

    Since 325 pounds was considered extremely heavy for a dirt bike back then - (long before the era of 500+ lbs BMW GS's) I thought it would make a better street bike. With the addition of a 19" front wheel, a road racing type front fender, a smaller rear sprocket to utilize the close ratio 6-speed gearbox and bigger carbs I had an oversized RD350 eater that had the horsepower of a Kawasaki 500 triple that weighed 150 lbs less than the Kawa. The frame had a huge 2-1/4" top tube and triple clamps made for Yankee by Smith and Wesson holding 41 mm fork tubes. This bike scared everyone who ever rode it - including the owner....

    I sold it to a guy in Missouri who was going to restore the original silver color scheme. I always wanted to rotate the cranks 180 degrees and put Phantom barrels on it because that was supposed to boost the power significantly - over 75 HP if some of the old Yankee guys were to be believed.

    [​IMG]
    #35
  16. Lotus54

    Lotus54 Ngana

    Joined:
    Nov 22, 2007
    Oddometer:
    251
    Location:
    Port Angeles, WA USA
    I picked up a 74 Explorer, from the original owner!
    Super low hours, cylinder wall looks perfect from what I can see.
    With new crank seal it runs great.

    [​IMG]
    #36
  17. PJay

    PJay Any bike, anywhere

    Joined:
    May 24, 2007
    Oddometer:
    1,281
    Location:
    Russell, New Zealand
    Yeah, something I've been seriously considering, too, as well as the '74 SDR dream.

    I already have a set of Honda Superhawks (1965 CB77 and 2006 VTR1000 - though they were neither ever called "Superhawk" in New Zealand).
    #37
  18. emti

    emti Been here awhile

    Joined:
    Aug 26, 2010
    Oddometer:
    310
    Location:
    northern n.y.
    Well, how did the carb work turn out? I have a 72 with a Bob Bennet motor and the IRZ carb , its starts ok but smokes heavy in the mid range. Im tempted to put a KO carb from The Mid Atlantic Trials site on it. emti
    #38
  19. PJay

    PJay Any bike, anywhere

    Joined:
    May 24, 2007
    Oddometer:
    1,281
    Location:
    Russell, New Zealand
    I have a (from memory) 28mm Mikuni on my MAR - a really good solution. Cheap as chips from a wreckers.
    #39
  20. ridemtra

    ridemtra single track

    Joined:
    Jul 11, 2009
    Oddometer:
    25
    Location:
    missouri
    [​IMG]
    #40