It's a bit quiet..

[af1-windy]

What's everyone up to? 

Someone must be doing something or going somewhere.. 

I'm adding a Denali Soundbomb horn to mine, using the Hex ezcan to run it.. hoping to find somewhere on the bike to fit it without having to strip it within and inch of its life 

I watched GG's video, great but like I said, looking to locate with minimal effort.. 

Cheers all, have a great weekend. 

windy

[Oldrider51]

Thinking the same thing, more activity over on BMWSportTouring.com.

I have installed a Rekluse clutch kit, adjusted the valves, and changed the oil this winter, so far.

Good luck finding room installing the horn without stripping the body work, pretty tight up in there.

[af1-windy]

Good luck finding room installing the horn without stripping the body work, pretty tight up in there.

I have a cunning plan, if it works I'll post photos.. 

[Becksy]

This very morning I had a new set of tyres fitted, Michelin Road 6s. First time out on the bike since 3/11 (no not March 11th US friends).
It is the perfect winter's day for a ride; clear, dry, well above freezing, recent rain washed away a lot of the grit.

[Grumpy Goat]

Good to see some are working on their bikes while there is winter / snow outside. Yes, it has been quiet but traffic for the sake of traffic can get boring too.

That said, and given the focus of my forum is on more useful stuff, it sounds like there are some nice projects that could benefit from write-ups which can be shared. You ever know when your DIY efforts could help someone else.

[c10]

Beta testing RS fuel tank mod for capacity increase .

[maxredline]

My RS is awesome and needs nothing. Having said that I just bought a second Gs750e collector bike for parts. Thinking on selling my scooter as the collector bike will fill that roll and possibly down grading my RS mainly to  something lighter. I'm a small guy and have some old sport injuries that are making things complicated.

[colirv]

Tit sounds like there are some nice projects that could benefit from write-ups which can be shared. You ever know when your DIY efforts could help someone else.

When the weather's a bit warmer I'll be fitting a pair of Givi S310 Trekker lights and an Innovv K3 dash camera. Should be a simple enough job, done in one go because of removing the odd panel, but I'm happy to write it up - eventually!

[Lee]

Beta testing RS fuel tank mod for capacity increase .

Did you remove the filler next?

[c10]

Beta testing RS fuel tank mod for capacity increase .

Did you remove the filler next?

Filler Neck Lee ?   If that is your question it is modified in small steps .  Today Ill be riding with 1 quart of fuel till I run out . There is a 2 mile loop laid out that has  three filling stations avaible once running out , and adding the 1 quart to get to one of them .  Plan is fill up on Center stand , and see total amount taken on . 

Currently at 44 miles on reserve light , and it has said ZERO miles to empty since 38.6 miles .  I can still see roughly 1 inch of fuel in bottom of tank when heled center or off side stand .

[Grumpy Goat]

When the weather's a bit warmer I'll be fitting a pair of Givi S310 Trekker lights and an Innovv K3 dash camera. Should be a simple enough job, done in one go because of removing the odd panel, but I'm happy to write it up - eventually!

Excellent. Looking forward to that. I was thinking of installing a dash camera but so far, for my use case, I have not yet convinced myself. But having your write-up could make it happen.

Just so you know, the parent website has a DIY page where PDFs of the write-ups can be stored - link here.

[Lee]

Did you remove the filler next?

Filler Neck Lee ?   If that is your question it is modified in small steps . 

Yep I was wondering if you were modifying the filler neck making it easier to get the tank full.

Here's pictures on what another person did.

   

   

The charcoal canister probably needs to be removed when doing this.

[Duckbubbles]

I also drilled three 1/4 inch holes vertically on the right side in what is left of the neck and can fill it to the brim. Adds around 1/2 gallon of useable fuel. I also never fill the tank and park it. I fill up at the start of a ride and leave whatever fuel I finish with in there until the next ride/fillup. I have done this on both my wethead 1200's and my 1250, plus a couple of friends bikes. Range usually goes to 250+ miles with this mod.

Frank

[c10]

Today took on 5.181 US gallons  . Auto shut off @ 4.8 g .  Very satisfied with the slight gain for riding in unknown areas for next fuel stop .

[Pyrrho]

Too cold to work on my bike so I'm holding off new projects until spring; looking to add a 2nd HexCAN and rewiring my Denalis so there aren't ziptied bundles of crap in every nook. Plus I've been laid off for most of this winter and start a new job in two weeks (finally!), and my beloved 20 year-old Civic died so I finally had to trade her in and buy a new one -- an Si this time, and boy oh boy do I love it.

An old girlfriend of mine who competed in Iron Butt rallies had the fuel filler neck on her R1100RS drilled out to both speed fill-ups and increase capacity. Is there a potential issue with messing with the filler neck on our more recent RSes messing with the EVAP system? I know overfilling on a Multistrada causes raw fuel to dump into the charcoal canister and cause problems.

[c10]

Too cold to work on my bike so I'm holding off new projects until spring; looking to add a 2nd HexCAN and rewiring my Denalis so there aren't ziptied bundles of crap in every nook. Plus I've been laid off for most of this winter and start a new job in two weeks (finally!), and my beloved 20 year-old Civic died so I finally had to trade her in and buy a new one -- an Si this time, and boy oh boy do I love it.

An old girlfriend of mine who competed in Iron Butt rallies had the fuel filler neck on her R1100RS drilled out to both speed fill-ups and increase capacity. Is there a potential issue with messing with the filler neck on our more recent RSes messing with the EVAP system? I know overfilling on a Multistrada causes raw fuel to dump into the charcoal canister and cause problems.

I deleted the EVAP canister .  No issue for my 2023 RS .  Glad to hear you have new employment , and new car .

[MHN-RS]

Is there a potential issue with messing with the filler neck on our more recent RSes messing with the EVAP system? I know overfilling on a Multistrada causes raw fuel to dump into the charcoal canister and cause problems.

The depth of the filler neck corresponds to what BMW believes is the highest fuel level that protects against fuel overflow into the two-way tank vent path, which includes the charcoal vapor capture canister.  Some may get away with modifying the filler neck, particularly if they also remove the charcoal canister, but the canister is not the only concern.  

The consequences of fuel flow into the canister are plugging of the tank's vent, which can lead to the engine stalling because no air can enter the tank to replace the fuel the fuel pump is drawing out (at some point the pump can no longer overcome the vacuum so no fuel goes to the engine).  K12LT's were notorious for this, as the initial ones had their canister atmospheric vent hoses located directly over the rear tire.  Rain water thrown up by the rear wheel would get sucked through the hose to the canister, blocking the vent path.  For those that do not believe much vacuum would be generated in the tank:  one of the signs of a blocked vent was a fuel gauge that never went below 1/4 -- the plastic K12LT tank would actually deform inward so much that it would deform the fuel level float tube at ~1/4 height.  The same symptoms/problems appeared when overfilling the tank with a too-much-modified filler neck.

The other significant concern is overflow onto the ground resulting from thermal expansion of the fuel.  The stock filler neck height provides enough residual air volume to accommodate such expansion without pushing liquid fuel out the vent hose.  This is not a theoretical concern.  One  example: the latest generation Gold Wing has a smaller tank than the last model, so some have experimented with modifying the fuel neck by removing the neck's plastic extension tube.  I did this, and immediately thereafter was rewarded with my first-ever overflow of a significant amount of fuel out of the tank vent hose onto the ground after a fill-up (cooler fuel from in-ground tank expanding as it absorbed heat from the adjacent engine and exhaust on a summer day).  Fortunately for me, my GL1800 neck removal was reversible.

I'm not saying that modifying the filler neck should never be done, but if modified it should be done with the awareness of the potential problems (i.e., not done in a manner which eliminates virtually all of the air space "cushion" the designers provided in the tank), and the bike then ridden with awareness of the mod (e.g., on days when the heat of the day could lead to excessive fuel expansion, not filling the tank to the max possible).  In my case, I still modified the re-installed Gold Wing's filler neck a bit, but did so in a manner which still preserved some of the air cushion.

[c10]

MHN-RS    My charcoal can is gone and removed before this mod . I have the Vent , and overflow only .  I've experimented with overflow 
on earlier mod to tank neck leaving the bike in the sun in my driveway , and no puke of fuel .  My guess is the white covers make heating the tank harder than the good old days of a black steel tank . 

My goal is not to fill up to max every time or ever park it with tip top 5.18 gallons .  Its for places with less fuel options in mountain ranges where a place could be out of fuel or closed early to hunt / fish .  It happens in the Ozarks .   So riding it those areas or a big interstate run to punch though a bad city to get fuel on other side having the slight bump in range is great .   

I have another plan I was telling Lee about on the phone to get a extra RS tank and have one of my plastic specialty customers help me with 
moving the tank indents out where they are not needed .  May get a whopping 5.3 g  lol

[MHN-RS]

Sounds like you have this very well thought out.   

My post was intended for those who might not have been aware of the potential pitfalls.  Removing the canister from my RS is on my to-do list (I've lost count of the number of canisters I've removed from BMWs).

Extra fuel is always a good thing.  I'm still trying to figure out where/how to "neatly" add an auxiliary tank on my Wing for longer western trips (Honda crammed "stuff" into just about every cubic millimeter under the skin).  But for running around on the RS here in the mid-Atlantic region, I really don't need more as we have a lot of gas stations, even out in the boonies. 

That said, I wouldn't turn down a slickly-designed RS range extender, just for the convenience of not having to fill up as often. 

[Chris216]

I've currently got all the body work stripped off for a good polishing and wax. Preping for 12K service, need to get the Boxflyer tools first though.
Chris