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  1. jimmbo

    Props, so many options

    Props vary considerably when it comes to blade shape, blade area, rake, cupping, venting, material, even casting/molding techniques. Only when two props are from the Same Lineage/Model/Series are the results truly predictable. Change Brand/Model and it becomes an Apple to Oranges comparison.
  2. jimmbo

    67 Johnson 40 HP electric shift wiring

    The 67 Brochures say the Lark/Electramatic Models have an "Emergency Starter Rope". Looking at the pic posted showing the Recoil. WTF happened to the Generator Pulley? The recoil doesn't look like it will be of much use.
  3. jimmbo

    RWD Tow Vehicle Launch Issues?

    Good for you, cause a lot of people don't. Maybe they could also use a Horseshoe somewhere for luck
  4. jimmbo

    RWD Tow Vehicle Launch Issues?

    Torsion or Spring Axle makes no difference if the axle shaft drops close to or lower than the underside of the ramp. Trailer would need to be lifted Vertically before it could move horizontally. Of course some will just just back up a bit more and take a run at it. I have witnessed that a few...
  5. jimmbo

    RWD Tow Vehicle Launch Issues?

    Most Single Axle trailers that fall off the edge of the ramp, need a complete rebuild, or more often, need to be replaced as the Brute Force method of yanking them out, destroys them them. A Tandem or Triple Axle, may suffer less trauma, unless all the Axles go past the end of the ramp. I always...
  6. jimmbo

    Plastic Tanks are All Junk

    Some people think 'Overtightening' is somewhere north of what you torque Wheel Nuts to. The old Adage, If enough is good, more is better, and too much, is just right, comes to mind
  7. jimmbo

    Props, so many options

    Try the 17, observe and report the results. It will accelerate slower.
  8. jimmbo

    1983 Mercury 90HP outboard (3carbs) Bogs out when hot

    Get the Correct, Factory Service Manual for your engine, before you touch anything
  9. jimmbo

    Props, so many options

    When you trim up and the Rpms increase, does the boat speed also increase? You mention a Rev limiter, have you ever hit it? If not, what is the highest Rpm the engine attains with the 15" prop?
  10. jimmbo

    RWD Tow Vehicle Launch Issues?

    Years ago, I was at a small lake that had an hard packed Gravel-Sand ramp. I often launched there, and one day I was watched a guy with a 4X4, loading a boat, smaller than mine. He was was spinning all 4 wheels, going nowhere, just chewing up the Ramp. I backed my one wheel drive RWD car down...
  11. jimmbo

    Electric Engine Conversion?

    The weight of all the batteries needed to have a run time of more than 5 minutes, would likely sink the boat
  12. jimmbo

    Instant power loss @ 3/4 throttle

    If the tach is out to lunch at Higher Rpm, perhaps the engine is revving much higher and you are experiencing things like Valve Float, or maybe a Rev Limiter, but I don't think engines had them back in 89. I asked, because you say it has great Bottom End Torque. In my eyes, small engine don't...
  13. jimmbo

    Instant power loss @ 3/4 throttle

    What yr is the Motor? Is the Tachometer accurate? What is the WOT rpm range for the Engine? What kind of 4bbl, Q-jet, Carter/Weber/Edelbrock? Is there any interference/contact between the Throttle Cable and Linkage with any wire going to or from the Ignition System?
  14. jimmbo

    RWD Tow Vehicle Launch Issues?

    Been using this as a tow car for over 20 yrs And this is it's replacement. Has a 7000lb tow option from the factory. and currently has about 13,000 miles on it.
  15. jimmbo

    Plastic Tanks are All Junk

    In the late 70s, early 80s, I took several Pressure Tanks in to the Dealer and traded them one for one on New Unpressurized Tanks.
  16. jimmbo

    Plastic Tanks are All Junk

    Any and all Businessmen do what is their Interests, nobody elses'
  17. jimmbo

    1983 Mercury 90HP outboard (3carbs) Bogs out when hot

    Welcome to iboats When it does the Bog, how long after starting did it run before you gave it throttle?
  18. jimmbo

    Plastic Tanks are All Junk

    A friend had a Kraut(I can say that, I am 1/4 German) Kadillac(Mercedes) and her husband had a Berlin Buick(BMW). For a bit they thought those were the greatest cars on the road. After a few years, the KK needed something in the Brake System. It was parked rather than fixed. As of the BB, after...
  19. jimmbo

    Just thought I'd share a nice photo.

    What a difference 25 yrs makes. St. Albert AB August 1985 August 2010
  20. jimmbo

    Just thought I'd share a nice photo.

    Kamloops BC. June 1987
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