OrangeQuest wrote: ↑
Wed Oct 31, 2018 8:18 am
I remember Capt UB you posting about not liking the OB bolts they come with. You may want to see if you can get something in the same metal as the OEM bolts if you are concerned with the bolts rusting.
I am very confused about your posting on your tiny tach not working
You are getting a reading just not correct RPMs? It doesn't read anymore?
Your first run with the tach worked! just seemed to be off by half. The tach measures time between spark pulses. At 360 and wrapped around one wire. If the tach is programmed to see a pulse every 1 second then it knows that is XXX rpms. but if it is seeing that pulse every 2 seconds then it thinks it is half the RPMs. You need to program the tach to a longer delay between pulses and go back to wrapping it around one wire only.
With you stating that the motor is sitting to high I am guessing the prop is venting and causing the motor to reach max rpm. That is why you were getting 3000 RPM, half of max. You also stated you have been around outboards enough so you should know if your motor is idling to high or to low.
The bolts are steel from the factory.... The allen head bolts work great. Most thieves don't carry big allens with them, but vice grips will work but so much is in the way, it takes time!!!
The none of the TinyTach systems work on this type of spark system, they have not kept up with the new OB systems. Going to buy a Tohatsu made one for $ 100 and use the TT on my new 2018 lawn tractor, which has an old school engine!
I'm talking about height and setback, when talking about the OB being to close to the transom and too high. This has to do with the water leaving the bottom of the hull and rising up. This is a subject for another time.
As for knowing what an OB sounds like at a idle or WOT, depends on so many things; manufacturer, 2 stroke, 4 stroke, old ears, old motor, new motor..... Tohatsu are (I Think) nosier then Yamahas..... My 2003 Yamaha 60 4 stroke was so quite, I sometimes tried to start it when it was already running!!