General topics » Tank Bag

Hi all - I have a BMW tank bag for my R1200RS but I'm not over keen on it. It's no longer waterproof, and I'm wondering about reproofing it with a product called a Diver Dave's which sprays on.
Until I saw another R1200RS which had a Bagster style bag on it. There was no tank cover fitted for it to secure to, it was secured by a similar system to my BMW one, via a couple of straps that ran around the headstock then back across the 'tank'. Unfortunately there was nobody near the bike for me to make enquiries of.
Two questions -
Is it worth trying to reproof my BMW bag ?

Does anyone recognise the make of the other bag I've described ?

Thanks

Zitat von wessie im Beitrag #2

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Zitat von Rutland Rider im Beitrag #1

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Hi all - I have a BMW tank bag for my R1200RS but I'm not over keen on it. It's no longer waterproof, and I'm wondering about reproofing it with a product called a Diver Dave's which sprays on.
Until I saw another R1200RS which had a Bagster style bag on it. There was no tank cover fitted for it to secure to, it was secured by a similar system to my BMW one, via a couple of straps that ran around the headstock then back across the 'tank'. Unfortunately there was nobody near the bike for me to make enquiries of.
Two questions -
Is it worth trying to reproof my BMW bag ?

Does anyone recognise the make of the other bag I've described ?

Thanks

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Bagster do a universal harness. I guess you saw this. I used one on my Super Tenere as I already had a Bagster bag. I tried using it on my Tracer bit it was not so good. As the Bagster bag was decades old and getting shabby I decided to change tack and use the Givi/Kappa tanklock system. I do not regret this and I have used the same Kappa RA308 (similar to Givi XS307) on three bikes including my RS. Unlike the Bagster system where you spend about £100 for a tank cover for each bike, you spend about £15 to get an adaptor for a new bike (if the current one will not transfer).

Bagster universal tank harness: http://www.bagster.com/easy-road.html?__...om_store=german

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Zitat von fred_jb im Beitrag #3

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Zitat von wessie im Beitrag #2

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Zitat von Rutland Rider im Beitrag #1

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Hi all - I have a BMW tank bag for my R1200RS but I'm not over keen on it. It's no longer waterproof, and I'm wondering about reproofing it with a product called a Diver Dave's which sprays on.
Until I saw another R1200RS which had a Bagster style bag on it. There was no tank cover fitted for it to secure to, it was secured by a similar system to my BMW one, via a couple of straps that ran around the headstock then back across the 'tank'. Unfortunately there was nobody near the bike for me to make enquiries of.
Two questions -
Is it worth trying to reproof my BMW bag ?

Does anyone recognise the make of the other bag I've described ?

Thanks

---

Bagster do a universal harness. I guess you saw this. I used one on my Super Tenere as I already had a Bagster bag. I tried using it on my Tracer bit it was not so good. As the Bagster bag was decades old and getting shabby I decided to change tack and use the Givi/Kappa tanklock system. I do not regret this and I have used the same Kappa RA308 (similar to Givi XS307) on three bikes including my RS. Unlike the Bagster system where you spend about £100 for a tank cover for each bike, you spend about £15 to get an adaptor for a new bike (if the current one will not transfer).

Bagster universal tank harness: http://www.bagster.com/easy-road.html?__...om_store=german

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There is a bit of a question mark over using the Givi/Kappa Tanklock, and the similar SW-Motech system, because I believe that they are not recommended by BMW for bikes with plastic fuel tanks. Not sure about the RS, but the GS is plastic and so I expect the RS is too. The reason these tank ring systems are not recommended is that the filler caps are held on with fairly small bolts going into threaded brass inserts which are moulded into the plastic of the tank. These fixings are used to hold the tankrings which in turn hold the tankbag in place, and are not designed to take the sort of loadings which will occur with a heavy tankbag as it rocks back and forth under acceleration and braking. If the brass inserts pull out of the tank then it could result in the fuel filler cap coming loose and a potentially expensive repair. A lot of people use these systems, and I've never heard of anyone having a problem, but it is something to consider.

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Zitat von Rutland Rider im Beitrag #1

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Is it worth trying to reproof my BMW bag ?

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Zitat von fred_jb im Beitrag #3

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The reason these tank ring systems are not recommended is that the filler caps are held on with fairly small bolts going into threaded brass inserts which are moulded into the plastic of the tank.

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Zitat von wessie im Beitrag #4

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Zitat

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There is a bit of a question mark over using the Givi/Kappa Tanklock, and the similar SW-Motech system, because I believe that they are not recommended by BMW for bikes with plastic fuel tanks. Not sure about the RS, but the GS is plastic and so I expect the RS is too. The reason these tank ring systems are not recommended is that the filler caps are held on with fairly small bolts going into threaded brass inserts which are moulded into the plastic of the tank. These fixings are used to hold the tankrings which in turn hold the tankbag in place, and are not designed to take the sort of loadings which will occur with a heavy tankbag as it rocks back and forth under acceleration and braking. If the brass inserts pull out of the tank then it could result in the fuel filler cap coming loose and a potentially expensive repair. A lot of people use these systems, and I've never heard of anyone having a problem, but it is something to consider.

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Do you have a source for this other than hearsay? A quick google does not produce anything and I do not recall this being a point of discussion on the GS forum.

Many makes have plastic tanks now and SW Motech and Givi are not going to risk litigation by marketing products that have been identified as unsafe by BMW.

I wouldn't trust anything a dealer says on the matter as they have an interest in scaring you into buying a Motorrad product...

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I definitely remember this being discussed, probably more than once, on the UKGSer forum. Also, having had all the plastics off my GS and examined the tank and the tank filler fixings, my own assessment would be that these would probably not be up to taking heavy loads. It depends a bit on the thickness of the tank plastic around the inserts, and also the shape of the inserts, but I wouldn't risk it, especially not for a large heavily loaded tankbag. I got rid of my SW-Motech bag and bought the BMW one for this reason, and also because I don't like the way the tankring mounted bags look, usually perched up in the air off the tank.

Here's a picture of the brass inserts pressed into the plastic tank.

filler neck.jpg - Bild entfernt (keine Rechte)

I had trouble opening the keyless gas cap: slackening off the tank ring screws fixed it. The tank inserts must be plenty strong if you can distort the cap - or on the other hand maybe the cap isn’t very stiff...

Zitat von fred_jb im Beitrag #8

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Zitat von wessie im Beitrag #4

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Zitat

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There is a bit of a question mark over using the Givi/Kappa Tanklock, and the similar SW-Motech system, because I believe that they are not recommended by BMW for bikes with plastic fuel tanks. Not sure about the RS, but the GS is plastic and so I expect the RS is too. The reason these tank ring systems are not recommended is that the filler caps are held on with fairly small bolts going into threaded brass inserts which are moulded into the plastic of the tank. These fixings are used to hold the tankrings which in turn hold the tankbag in place, and are not designed to take the sort of loadings which will occur with a heavy tankbag as it rocks back and forth under acceleration and braking. If the brass inserts pull out of the tank then it could result in the fuel filler cap coming loose and a potentially expensive repair. A lot of people use these systems, and I've never heard of anyone having a problem, but it is something to consider.

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Do you have a source for this other than hearsay? A quick google does not produce anything and I do not recall this being a point of discussion on the GS forum.

Many makes have plastic tanks now and SW Motech and Givi are not going to risk litigation by marketing products that have been identified as unsafe by BMW.

I wouldn't trust anything a dealer says on the matter as they have an interest in scaring you into buying a Motorrad product...

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I definitely remember this being discussed, probably more than once, on the UKGSer forum. Also, having had all the plastics off my GS and examined the tank and the tank filler fixings, my own assessment would be that these would probably not be up to taking heavy loads. It depends a bit on the thickness of the tank plastic around the inserts, and also the shape of the inserts, but I wouldn't risk it, especially not for a large heavily loaded tankbag. I got rid of my SW-Motech bag and bought the BMW one for this reason, and also because I don't like the way the tankring mounted bags look, usually perched up in the air off the tank.

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FWIW I've used the Givi Tanklock ring and an XS307 tank bag (packed to the gills, I might add) on trips up to north Norway and down to Corsica. No issues whatsoever.

Yes, the flat base of the XS307 makes it look "perched in the air" but (a) I don't see that when I'm riding it and (b) when I'm off the bike the tank bag comes with me as it contains bits I need.

As wessie pointed out, I'm sure these manufacturers have tested their products so they don't wreck the bike they are attached to!

Cheers

Paul B.

I had the BMW tank bag on my RS - it was not waterproof from day 1. Dealer replaced it with a new one which also leaked doing a "garden spray" test, so they gave me a credit note instead. Both the top transparent pocket (designed for documents or a tablet!) and the inner "bag" leaked profusely in heavy rain. Very disappointing, especially since other BMW bags that I have using the "inner bag" system have been fine. Guess you were lucky if yours was actually waterproof !

I know that others here have expressed horror at the prospect of one of the Baglux tank covers but they do make a very secure mounting for one of their tank bags. Yes I do have both but no longer use the bag regularly. I like the tank cover though for a variety of reasons and it remains permanently on the bike!

I used a Baglux universal harness on my last bike with some success, and have tried fitting it to the RS but found that the hooks responsible for securing it near the seat did not match the shape of the tank (which they're intended to hook onto). The RS-specific Baglux harness hooks around the frame [1] rather than under the tank, so I'll have to modify the shape of the hooks on the universal harness to do the same. It's not the most elegant solution, but I prefer to stick with Baglux.. it's good gear!

[1] http://rigsville.com/wp-content/uploads/wppa/7665.jpg

Zitat von andygriff im Beitrag #5

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[quote=fred_jb|p22228][quote=wessie|p22221][quote=Rutland Rider|p22220]

I use a K1200S/K1300S bag and have adapted the rear fittings - works beautifully , is large and still waterproof 10 years on . It's the one that was produced to use with the SatNav and so accommodates the RS satnav very well. These come up on Ebay reasonably often. Good luck



PS - this was summer 2018 in Wales - what we'd give for 44 day without rain now !!!

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