Monthly Archives: February 2012

SW Motech Rack Problems (Updated 25/02/12)

This thread was started in April 2009.

We’ve all heard apocryphal stories about people who overload their rear carrier and break it. The recommended weight limits do seem to very low and very easily exceeded…

I bought an SW Motech rear carrier and Givi Monokey adapter plate for my Triumph Sprint ST because it looked good and exuded typical German quality of design and manufacture. It wasn’t cheap, with the rack (“Alu-Rack”) coming in at £92.32 and the adapter plate at £25.99 both from Bykebitz in Yateley. This was in April 2007.

The rack fixes to the mounting holes left when you remove the passenger grab rail with some very nice hex bolts.

Here’s what I mean:

SW Motech L/H Bracket

SW Motech L/H Bracket

SW Motech R/H Bracket

SW Motech R/H Bracket

SW Motech Alu-Rack on Sprint ST

SW Motech Alu-Rack on Sprint ST

Givi Monokey Adapter Plate

Givi Monokey Adapter Plate

Givi Box Mounted

Givi Box Mounted

The posted weight limit for this setup is 7.5kg

Skip forwards 18 months and I spent 6 months commuting to St Albans which was 50 miles each way (M4/M25/A405). This included carrying a backpack containing my laptop (and my lunch).

The Givi box weighs 4.1kg empty, my backpack containing the items above weighs in at 7.3kg, a grand total of 11.4kg – just a bit over the posted limit then…

One Saturday morning, whilst washing my bike (as you do), I noticed that the box moved up and down very easily – in fact, you could say it looked loose. Loose it was. Actually, the rack had broken on both sides and the whole thing was only held on by a 1/2″ section of steel bracket… (oops!)

Luckily, a local farmer is pretty handy with a welder (he does keep 3 CX500s and an old Royal Enfield / Indian on the road). He welded them up and I was good to go.

For a few weeks.

Another “flappy Givi” experience (this time with photos):

Broken Brackets (rust is from previous welding job)

Broken Brackets (rust is from previous welding job)

Left Hand Bracket

Left Hand Bracket

Right Hand Bracket

So I stumped up the courage (and the money), went down to Bykebitz and ordered two replacement brackets:

Old vs New

Old vs New

Lovely (expensive) New Brackets

Lovely (expensive) New Brackets

The cost: a mere £54.48 …. (where’s the “gulp” smiley when you need it?)

Anyway. Back, fitted and touring now. I haven’t (can’t) reduce the weight of what I carry, so this story may still have another chapter…

Update 14/12/09: So Far So Good…

The Givi/SW Motech combo is now fitted to my third Sprint ST with no ill effects (so far). I’ve just bought a Givi E52 box which will fit two full-face helmets (and allow me to overload it even more!).

E52 arrives after Christmas.

I will keep an eye on it.

Update 16-January-2012: More Problems

Two years later. Tours of France and Ireland. Sprint ST #4 (a black one this time), and it’s happened again!

Two different problems this time. Firstly, the box is loose on the adaptor plate, largely due to the fact that the “top hat” fittings have worn their way through the cutouts in the plastic on the base of the Givi.

This is the Givi rack and plate from my Honda VFR800. You can see the two “fingers” that fit into the slots in the base of the box.

SW Motech do it differently:

SW Motech Givi Adaptor FixingThis “tophat” slots into the underside of the Givi box (Note that this picture shows the new modified part – more later). Over time and about 20k miles, this has worn the plastic slots in the box:

Givi Topbox Worn Out FixingYou can see the wear around the end of the slot. This caused to box to flap up and down (causing more wear!). I’m sure that any mechanical engineers reading will be familiar with this (I wasn’t) but the soft part can actually wear the hard part (as well as the other way round). Here’s a picture of the old part next to the new one that was fabricated by my neighbour:

Old vs New SW Motech Givi Adaptor FixingsYou can clearly see the worn aluminium on the left hand part.

Luckily I have a very clever neighbour who is pretty handy with a lathe and he made me up a couple of replacement parts. The are larger than the originals to take up the slack in the worn box.

So far, they fit well and have (mostly) stopped the movement of the topbox.


As I had a broken rear light, I decided to remove the rack and the rear fairing, only to find that the “new” SW Motech rack was cracking in exactly the same place as before:

SW Motech Broken (Again) LHS

Cracked bracket (Left Hand Side)

SW Motech Broken (Again) RHS

Cracked bracket (Right Hand Side)

SW Motech Rack Broken (Again)

Cracked Bracket from Underside

Again, mechanical engineers will probably spot this as an example of a stress fracture. Do I remember from somewhere that Royal Navy engineers redesigned the hatches on their warships to stop this? Nice sharp corners = concentration of stress = fracture

What would be wrong with some nice smooth curves…  ?

So now I’m faced with a choice of replacing them again or switching to a (better designed?) alternative system. I will forward this to the guys at SW Motech and see what they say. They still make these racks (4 years on) so must believe that they are OK.


Box refitted and a close eye being kept on the cracks. But it still moves up and down!

Update 25/02/12: … and this is why

The adaptor plate is fitted to the rack with three quick release clips which are very useful for switching plates (never done it) or removing the whole thing (once) – unfortunately, these fixings are not as robust as good old-fashioned bolts…

Here’s the SW Motech rack from underneath:

SW Motech rack - undersideAnd here is the offending fastener:

Camloc fastener V50R3You can see that the seating is worn. The effect of this is to allow the rear of the box to move up and down.

Ordered a new part. Naturally you have to buy the whole fastener which comes in a natty bag from SW Motech in Germany (even though it’s made in China). The cost? £6…

Looking closely at the part and Googling, I discover that it is actually made by Camloc (Part number V50R3-1-1) and can be found on their website. Download the pdf for full details.

Unfortunately, you can’t buy online direct from the manufacturer. Clicking the “Buy Online” link on their website merely lists their three UK distributors who, even though Camloc insist that they offer “our full range of products and accessories“, do not list these parts (and don’t have very helpful “Search” facilities).

I’ve paid my £6 so will fit my replacement part, but if anyone else out there gets any further with buying these, let me know!

Fitting a Givi Box to a Triumph Rack

When I bought my Tiger 1050 it was fitted with full Triumph luggage:

Triumph Tiger 1050This is all well and good – and jolly nice it looks too. But I cannot fit laptop backpack in the box (or the panniers). They are all too tall and thin.

Time to dig out the 5-year-old Givi E360 that has served me so well over the past few years and one or two Sprints.

Firstly, removing the Triumph luggage is a doddle. Removing the fancy sliding-carriage base plate was a bit more difficult as it had been done up so tight that it didn’t slide at all (maybe the previous owner is trying to tell me something here…) Eventually, you end up with the basic Triumph rack:

Triumph Tiger 1050 Standard RackLuckily, Givi make a really clever multi-adaptor plate (E250) with a mesh of holes to fit most base racks.

Givi Adaptor Plate E250 Detail…except Tigers.

Even with that amount of adjustability, I still had to drill a couple of 6mm holes in the metal rack to line up with the adaptor plate holes.

Givi Adaptor Plate E250 on Tiger 1050A nice little cover/filler:

Givi Adaptor Plate E250 fitted to Tiger 1050Tiger 1050 with Givi E360 fittedJob Done.

Time: about 15 minutes.

Cost: £38

Now I can start using my backpack again.

My Bikes

I have decided to write the definitive history with the help of a recently-discovered photo album from the 70’s and some of my old mates at the time.

1978 - Brighton & Hove Albion Scarf!

You can read it here (opens in a new page)

The bikes described include:

Raleigh Runabout RM6

Honda CB125S

Honda CB175K4

Honda CB500/4 (four of them)

Honda CB550K3 (three of them)

VFR800 Fi-1

Triumph Sprint ST 955 (4 of them)

Triumph Tiger 1050

Honda CB900FZ