« on: December 22, 2020, 08:32:53 PM »
Thank you for the invitation Tioli. I have been to Tasmania many times, I love everything about it
News: A big welcome to all new members !
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Messages - EThor
« on: December 22, 2020, 08:44:13 AM »
Hi guys, after having owned my 2019 BMW F 850 GS ADV (with Akrapovic muffler) for now 1- ½ years I thought I would share my opinion on modifying the exhaust, replacing the “Euro-box” with link-pipe (see my prior post/installation)
There are probably a few different reasons we are willing to try this modification on our bikes, we might think that the “Box” looks butt ugly and the bike sounds better/louder/angrier, it might even increase performance of the motor (not that I actually think it needs that)? Anyway, I kind of went after all these things, but now I think it was a wrong call.
I have removed and installed the link-pipe numerous of times to try to find out how it actually influences the performance of the motor, with or without the box vs pipe in different situations and this is my conclusion: Yes, the exhaust is louder and that comes with “popping” sounds when shutting off the throttle (might sound cool). What also sounds louder is the ticking sound in the motor, it is very noticeable if you run the motor in low RPM, like 2500rpm (3rd gear for example) and then throttle it, while picking up the RPM's. With the “Box” this action comes easier (more torque) and without the ticking sound. For me after playing with this back and forth I’m confident that the motor loses low-end torque with the link-pipe (and AM exhaust), I think the motor is not tuned/mapped for open exhaust modification like that, so the “Euro- box” is staying on my bike. Losing the characteristics/tune/torque of the motor for the look or the sound (or both) is not worth it for me.
Except remapping the motor, then in theory with open exhaust you should get more power, but I don’t want to go there.
I have done a lot of studying to try to back up what I’m sensing/experiencing and have found all kinds of explanations that have led me both ways. But I really wanted to find an article or video that would cover my experience fully and I actually found one, for me the guy in this video is spot on:
This is how I see and understand what is going on:
Cat (OEM) + “Euro-Box” (OEM) + Exhaust (OEM) = OEM Mapping/Performance
Cat (OEM) + "Euro-Box" (OEM) + Exhaust (AM, Akrapovic) = Inside mapping range
Cat (OEM) + Link-Pipe (AM) + Exhaust (OEM) = Maybe inside mapping range (I don’t know)?
Cat (OEM) + Link-Pipe (AM) + Exhaust (AM, Akrapovic) = Out of mapping range, pressure wave wrong (back pressure) for valve overlap (popping sounds when shutting off throttle), less torque in low RPM.
I’m no expert in this field but still interested, so take it as it is from me, or not, up to you.
« on: October 20, 2020, 08:22:49 AM »
By the way Queestce, if you're going for this rack bag you might want to put clear protection film on top of the brake light, if you are fussy. It does do some wearing when dusty/dirty, just saying.
« on: October 19, 2020, 11:11:24 AM »
Always good to have bags There is also one bag on each side in the frame, in front of the panniers. On one side I have a neck warmer and on the other side thin gloves. Those are bicycle frame bags, good to have
« on: October 19, 2020, 07:57:10 AM »
Here are the photos, I actually used 40mm spacers/pipes with Heat Shrink as finish, and new stainless bolts, OEM +40mm. The idea was to make more out of the bag and also fit the highest point of the luggage rack to the panniers, for loading my luggage. And by doing this I got some space for the side bags (Givi), I use the bags for straps, locks, chain............those kinds of things. I hope this will help.
« on: October 19, 2020, 07:04:11 AM »
This bag that your link refers to is smaller than the one that for example Touratech and Wunderlich make for the F850. I know this because I have bought both, I was only after the side bags from the Givi set. What I did was put spacers/pipes (about 25-30mm) under the luggage rack to raise it at the back, that gave me more space for the bag and fits better to the leaning angle of my Bumot racks and panniers. If you want I could send you some pictures?
Yes but what they do not share are the forks, the F 750 have Conventional forks and the F 850's have Upside-Down forks. I do not know why BMW does that but in my book the Conventional forks are more prone to flex and vibrate. The Upside-Down forks are as far as I know the choice for "race" bikes on and off road today. Does this make a difference towards the headlight issue you are talking about, I don't know.
Yes I had that happening on my bike last year, not much but notable. Next time I took the bike for service at the BMW dealer they resealed the sump (not gasket). This was of course with no cost on my behalf, and no issues, as it was under warranty.
« on: March 29, 2020, 02:20:46 AM »
I just finished a modification on my Rallye seat for my 2019 F850GS ADV, I wanted to share my thoughts and what I did:
I think my Rallye seat looks good and it is actually right for my height, BUT it just does not feel quite the right fit for me.
This is what I do not find right fit for me;
1- In stationary position with my feet on the ground the seat feels too wide
2- when riding there is a pressure point on the inner side of each leg (in the groin); instead of distributing the weight across a larger area. Because of this I'm having to stand up quite often while riding to "stretch" because of the discomfort if that makes sense (the foam edges on the seat are surprisingly sharp)
3- When braking into corners I slide too easily onto the tank junk-first (!)
I have actually had been thinking about buying a new Wunderlich seat, which I think would address my discomfort with the Rallye seat. Still I kind of like both seats in their own way but do not like the idea of swapping seats, depending on what I'm going to do on the bike, and by the way, a new Wunderlich seat costs about $1.000- AU dollars!
So I decided to give it a go modifying my Rallye seat, it was easier than I thought modifying the foam and I think I have achieved what I wanted, kind of a little bit of both worlds. I did the work on the foam slowly and step by step, consistently fitting and trying on the bike in the process, without going too far (there is no way back), anyway I think I found my "soft spot" and so far I'm happy with the results, although I have not done any long rides yet after doing this.
For anyone interested, see pictures (all the tools that I used are in the pictures): (PS the photo with the arrows shows the new "edges" after modifying the seat)
FYI, I did get my front light assembly replaced when I had my bike serviced last time by an authorised BMW dealer, under 3 year warranty claim. This is one of the good things about BMW, at least in my experience with my BMW cars and bikes, never a problem if I'm not happy with something, so far