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21
Explorer / Re: Engine Temperature Readings - Seizure
« Last post by Lotus54 on October 30, 2015, 03:05:50 AM »
I do have a wiring diagram.
 PM me and I'll send it to you.

How where you running it?
   Idling around, high rpm, road?


Mark
22
Explorer / Re: Engine Temperature Readings - Seizure
« Last post by Lancethemotoman on October 29, 2015, 04:56:15 AM »
Thanks for the info, I wonder if anyone has a working engine temp reading. Good idea on feeling the hoses.
I'm in Okinawa, Japan. Had the bike shipped here from a dealer in Italy, who immediately stopped returning communications upon finding out the bike seized.
23
Explorer / Re: Engine Temperature Readings - Seizure
« Last post by Lotus54 on October 29, 2015, 01:15:18 AM »
My temp gauge never worked either.
  I don't think it is wired up.

The fan on mine comes on when it is warm.
  I can try to take some readings.

I've heard of one other Explorer seizing when new.
I think it was from running too hard when new.
They require a long break in.



Check the hoses and see if they get hot.

(What is your location?)
24
Explorer / 2012 OSSA Explorer for sale $5700
« Last post by gonemotorbikin on October 28, 2015, 06:02:00 PM »
5700 Canadian dollars for my Explorer. It's in very good condition about 25 hours on it. It comes with the Marchocci suspension, every thing else is stock. It's missing the front brake lever brake light cable. This hasn't been replaced when broken because it's not street legal in British Columbia.
25
Explorer / Engine Temperature Readings - Seizure
« Last post by Lancethemotoman on October 28, 2015, 12:39:55 PM »
Hi Everybody,
I'm an Ossa and trials related Newb. I recently purchased a 2015 Explorer. The bike seized and scored the cyl/piston with less than 2 hours on it, not even really broken it yet.  I finally got the cyl re-plated and bike put back together. It starts up and runs fine, but I'm not getting an engine temp readout, so I shut it down as soon as the fan comes on, as I don't want to risk seizing the engine again. The Manual says that engine temp reading is "optional". The head has a temp sensor and wires going up to the computer, so it seems I should have it.

Do any of your bikes read engine temp?  The ambient temp reads fine on mine, but when in engine temp mode there are just little bars there with a thermometer icon next to them.

In checking the resistance across the temp sensor, which I assume is an RTD, I'm reading a bit over 2,000 ohms at ambient and about 350 ohms when the engine gets up to temp and the fan comes on.  Does anybody have specs on what the resistance range should be here?

There is a chance that I have the temp sensor plugged into the wrong wires, as there are two plugs that are exactly the same in the same vicinity. I doubt this to be the case, as the wiring diagram I found (for an older 280i) shows a brown and a yellow/black wire going to the temp sensor, and that's what I'm plugged to.  I can't find what the other plug goes to on the wiring diagram though...

Any advice?  Anybody have a wiring diagram for the explorer? I also have an orange wire in that same area that I can't find a mate to.

Also, do the fans on your bikes run most of the time?  I'm not sure I got the root cause of the 1st seizure, so I'm afraid to run it after the fan starts. Not sure if coolant is even circulating.

Thanks in advance for any help.

Lance
26
Explorer / Re: Tranny Oil and Amount
« Last post by Lotus54 on October 24, 2015, 01:18:42 AM »
There was a service bulletin about lengthening  the breather tube.
   I used some clear tubing, and can see oil in it after long hills at higher rpm/speed.
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Explorer / Re: Tranny Oil and Amount
« Last post by mikesnick on October 21, 2015, 07:19:22 PM »
With the extra oil I got tired of the bike puking it out so I made a reservoir to contain the over flow. As the bike cools it oil drains back.
ms
28
Explorer / Explorer with TR plastics
« Last post by Lotus54 on August 24, 2015, 12:41:18 AM »
Pretty quick change.
 The only part is figuring out where to put the 'Easy Start' box.


29
Explorer / Transmission pics
« Last post by Lotus54 on August 07, 2015, 11:10:32 PM »
I had a broken shift return spring.
Once I learned some of the tricks to remove (thanks Big Don).
1. heat those 5 tiny 3mm allen head bolts that hold the gearbox cassette in. Take your time!
3. Hold the little shaft (remove the breather- or later bikes the small bolt) in front of the countershaft. What fooled me is there is not a 'nut' shape inside or anything, just smooth. Jam a small Torx wrench in there and take the 'Clutch Fixer Nut' off the other side. IT IS LEFT HANDED!
Touque is only something like 5nm back on.

of course it is supposed to be in gear.
The side cover is a bit fiddly to get back in- just make sure to look at the Guide from OSSA Canada (I'll try to attatche it for future reference).

I adjusted the spring stop eccentric with the shift forks off- making sure the shift drum 'roller' snapped into each place best possible. If it is wrong it won't snap in and you will have to jiggle the shifter to make it work.
It is pretty easy- just take your time. What I did worked quite well. (they also have a 'cutaway' case the the gearbox can mount in and reach that adjustment with everything in place- but this works fine.)


on the weekend, near the end of the ride, I noticed the shifter not returning from being pushed down (worked fine after pulled up).
 So I figured a shifter return spring.



So a $5 spring and good inspection (replaced the countershaft bearing and seal while in there) and all back together working great.
There is an adjustment that needs to be made on the spring stop- but a bit of looking and I found out how- shifts great.

I thought some of you may like to see the gearbox- it is a pretty cool little setup (sorry for the dirt, I hadn't really cleaned things up yet)







https://youtu.be/Z2knhUP21Gs
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TR280i / Re: 280I low RPM torque
« Last post by Lotus54 on August 07, 2015, 07:02:52 PM »
My 2014 280 is  excellent there- perhaps just a newer map could do it?
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