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Thread: 1100R Scrambler Project

  1. #31
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    Quote Originally Posted by BC1100S View Post
    Is the oil temp sensor on the inlet or outlet side of the cooler? I'm assuming inlet. My best understanding is that oil temps should be at least 212F in order to evaporate any water typically generated by the combustion process.

    Any word back from Tesla yet?
    No on that!

    Yeah, it's on the inlet side. I still have the oil thermostat on the engine and it is a stock GS cooler so I'm not too concerned about running too cold, but I am concerned about running hot because of the obstruction in front of the cooler. This afternoon I took off the big GS fender and put my R fender back on after some cutting and test fitting (not going to discuss the test ride to check my gauge fix when the rear end of the fender became lodged in the lower cooler bracket...I was wracking my brain riding home trying to figure out why the steering was fighting me all of a sudden), needless to say I have some trimming left to do and I may cut some vents in the back end to direct some air there.

    Also just picked up some Acerbis Rally Pro hand guards - was thinking mainly to keep cold wind off my fingers, now that I look at them they are kind of narrow for that purpose but at least they look cool....

  2. #32
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    Most Oilheads I have ridden and worked on normally run 5 bars on the RID.
    The stock sender sits on top of the motor beside the thermostat where the oil leaving for the cooler is the hottest. I would expect it to be slightly cooler by the time it hits the right side of the oil cooler.
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    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  3. #33

    Try some brackets directly under your headlight

    From the looks of things you have a good eye and talent to back it up so why not look at a couple brackets directly under your headlight. You could also consider a different headlight with a different mounting option.

    I considered that option with my 850R scrambler but my path had more options because I eliminated the stock headlight / gauge and idiot light set up. I haven't been back on that project for a while due to my distractions toward other projects, to many other projects and they keep coming.

    Here is a few snaps of the most intrusive project, the first one is the before and the others are some of the latest
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  4. #34
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    Quote Originally Posted by 69zeff65 View Post
    Here is a few snaps of the most intrusive project, the first one is the before and the others are some of the latest
    You should start a new thread so we can follow this project independently.

  5. #35
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    Quote Originally Posted by 69zeff65 View Post
    From the looks of things you have a good eye and talent to back it up so why not look at a couple brackets directly under your headlight. You could also consider a different headlight with a different mounting option.

    I considered that option with my 850R scrambler but my path had more options because I eliminated the stock headlight / gauge and idiot light set up. I haven't been back on that project for a while due to my distractions toward other projects, to many other projects and they keep coming.

    Here is a few snaps of the most intrusive project, the first one is the before and the others are some of the latest
    Ah, a basket case - looks like it's coming along nicely though.

    I actually considered a couple different options, I looked at mounting above the trailing arm but there isn't room where it doesn't interfere with the suspension and/or steering; the other option being in front of the forks and attached to the steering assembly which is what I think you are talking about. I could weld some tabs to the fork tubes and attach it that way, I'd have to get creative on how to run my hoses - on the stock GS the hoses just come straight out but are hidden by the upper fairings. I saw another GS scrambler done thusly:

    Screenshot from 2020-07-09 09-32-42.png

    I kind of went that route because it looks nice and neat - can't tell how it's mounted, almost looks like it's mounted TO the trailing arm which I didn't do. Also can see some gunk kicked up by the wheel - I have a little better coverage from the fender so should be ok in that respect. Anyway, I'm going to run it for now and see how it works - at the end of the day I don't want to cook the motor so I may end up doing as you suggest.

  6. #36
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    If I read the above post correctly (and you certainly don't need my advice) but I wouldn't be mounting the cooler anywhere where the lines are going to be continually flexed.

  7. #37
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    Quote Originally Posted by GSAddict View Post
    Most Oilheads I have ridden and worked on normally run 5 bars on the RID.
    The stock sender sits on top of the motor beside the thermostat where the oil leaving for the cooler is the hottest. I would expect it to be slightly cooler by the time it hits the right side of the oil cooler.
    Thanks for that - in reading up on it I've seen references to the bar gauge and what people have seen for "normal" running temperatures but good to have values to go along with it. I'm assuming that the thermostat would regulate the oil temp so it doesn't get or stay too low - I've noticed since I've been paying attention that mine doesn't open up for a surprisingly long time. And that kind of goes along with what I've seen - my gauge seemed to be reading 210 or a hair above most of the time so far. The top end of my gauge is 300, which I'm sure it's possible to run above that but from what I gather if I'm seeing the upper end of that scale too often I will need to rethink my cooling setup.

  8. #38
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    Quote Originally Posted by BC1100S View Post
    If I read the above post correctly (and you certainly don't need my advice) but I wouldn't be mounting the cooler anywhere where the lines are going to be continually flexed.
    In the photo it looked to me like the cooler was mounted to the trailing arm in which case the lines would flex with the suspension travel, which I didn't want to do. I guess on the stock GS the cooler is mounted in the "beak" which is stationary, whereas if it was mounted in my case to the forks it wouldn't be obviously. The hoses I used are reinforced and pretty sturdy and I think you could get creative on how they were routed to minimize movement, but then you are introducing stress to the hard lines and etc, so yeah, not ideal.

  9. #39
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    Quote Originally Posted by mzeitz View Post
    Thanks for that - in reading up on it I've seen references to the bar gauge and what people have seen for "normal" running temperatures but good to have values to go along with it. I'm assuming that the thermostat would regulate the oil temp so it doesn't get or stay too low - I've noticed since I've been paying attention that mine doesn't open up for a surprisingly long time. And that kind of goes along with what I've seen - my gauge seemed to be reading 210 or a hair above most of the time so far. The top end of my gauge is 300, which I'm sure it's possible to run above that but from what I gather if I'm seeing the upper end of that scale too often I will need to rethink my cooling setup.

    Let it idle without moving on a warm day. Your temperature will come up quickly. Over 300 will damage the oil.
    '
    Ufda happens..........

    Need your R11xx Hall sensor rewired? PM me.

  10. #40
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    Quote Originally Posted by GSAddict View Post
    Let it idle without moving on a warm day. Your temperature will come up quickly. Over 300 will damage the oil.
    I make a point of not running it for too long sitting still; if it's a hot day I will even shut it down if I know I'm at a long red light. It's the stop/go or very slow moving traffic that sucks to deal with. Speaking of which, I got stuck in a jam at about walking pace for almost an hour riding around the north shore of Oahu on a Road King a couple months ago. The way those things idle I was feathering the clutch almost the entire time; when I stopped afterwards my left hand was so cramped up I literally had to peel my fist apart with my other hand to straighten my fingers....

  11. #41
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    Calling it!

    Well I think I'm going to call it done for now. I put the rally pro guards on yesterday and gave 'er a good wash and then ran it for a couple hours last night. It's running better than it ever has, idles smooth, power is super linear and predictable which it wasn't before at low revs, and no more pinging when you roll on throttle in higher gears. I have a couple maintenance items I need to deal with that will be next - my oil sight glass has started seeping and I noticed my rear swingarm boot has a tear in it. I've also heard it's important to lube the gearbox input splines at around 50,000, and I just rolled over 46k - might wait until the fall to tackle that one though.

    I appreciate everyone's feedback and helpful suggestions. It was a fun project and I'm pleased with how it turned out.

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  12. #42
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    Three things....

    1. I once got caught in San Francisco traffic on a hot day on my 1100S. I think I hit every stoplight between the Golden Gate and the resumption of Hwy 101 PLUS being from out of town, I forgot that lane-splitting is an OK thing to do in California.
    Anyway, seeing as I was in traffic for 30-45 minutes, I was concerned about engine/oil temps with very little airflow through the oil cooler. Long story short, my fears were ill-founded as the bike never faltered then or for about 50,000km after. I put it down to running synthetic oil.

    2. Mount the oil cooler on the back luggage plate/tail light mount. Yes, it'll take a few yards of oil line and it won't be very crashworthy - but it sure would look cool! The Racecrafters Superbike Team mounted the oil cooler for their Z-1 on the back fender..... https://i.pinimg.com/originals/6f/39...e8792586f0.jpg

    3. Its been a joy following this thread. My compliments to your talents, sir.

  13. #43

    Outstanding Scrambler build!

    I wish I could tone down my purist (lack of creativity) streak and do some innovative stuff with mine and other distractions I have on the treadmill of projects running through my shop. I hope I can get back to the Scrambled 850R soon and maybe get a little more creative based on what you have presented here.

    Thread theft:
    BC1100S, I do have a current thread on the Barn Bike in the BMWMOA Vintage forum with a few more pictures of the progress. If not for the family and a good friend of the original owner what I initially purchased as a pile of questionable spare parts has transformed into a restoration that will hopefully bring smiles to the family and his friend.

    Back to the thread:
    Nice build and so crisp and clean, I hope that the oil cooler works as you have done it because it really gives the bike a clean look.
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  14. #44
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    Appreciate the kind words...see you on the road!!

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