Wednesday, June 25, 2025

Index - of sorts anyway. Think of it as a guide.

 

Bikes



Clutch


Electrical


Engines and Dyno runs


Exhaust


Maintenance


Suspension



Tuning - Carby

Tuning - Fuel Injection


Moto Guzzi


Cagiva


MV Agusta


Stuff


.

Fuel pump retaining clips in Ducati fuel tanks

 

Turns out, they're called "Terry Clips".  How do I know?  Well.......

A couple of years ago, I sent a rusty 750SS fuel tank out for repair.  It had the rust repaired, and then a liner treatment done.  I've not always been such a fan of the liners.  Done poorly they can lift and cause even more mess, and some of the kits that worked great 25 years ago now just don't.  I try to stay away from them, and certainly won't do it if asked.

digressing.... I did a liner in the mighty KR1S tank back in the day.  It had a small weep from the low point on the LH side - where the water sits when it's on the side stand.  In the instructions, it said to put some nuts and bolts in the tank to act a little more aggressively on the surface rust while you shook it all around like crazy.  Yeah.  Great idea.  You know that little weep you had?  Well, now it's a great big hole you have to weld a plate over.  Awesome.

And then, there was the time someone (let's call him Trev) had to source the chemical that disolves the liner after he'd filled the fuel supply pipe with liner and let it cure.  I think it was MEK?

But I know a bloke who knows a bloke who is very happy to do them, so I take the obvious path to him.

One potential issue though (flagged by another fella who did a few tanks for me, but then decided he'd had enough), is that the treatments used to clean the tanks out may be aggressive on aluminium.  In this case, the rivets that hold the fuel pump mounting clips.  Or don't, when they've been eaten away.

I got this tank back just before Christmas, in the typical end of year rush to get things finished.  I worked over the break, and wanting to get this bike out went to put the tank back together and had a funny feeling something wasn't right.  Couldn't quite put my finger on it though.  When I slipped the pump in, it became pretty obvious.



No clips to hold the pump.  Hmmmmmmmm.  The other shops involved in the repair and liner were closed, so no answers there.  Meaning the question then became "where do I get them?"

And, even more importantly, "what am I trying to find?"  Often, it's the not knowing what to call the thing you're looking for that is the biggest issue.  All these things have names, but often the name is completely irrelevant to what it is or does.  Searched around a bit, and came up with the delightfully random "Terry Clips".  Tel to his mates.  Not sure how I ended up there now, but it's the typical Google this and that and in and out of rabbit holes.  Like this:



20.44.3-1 is the part needed, being 44 - 46mm nominally.  Worked a treat.  But, the next issue was fixing them.  My riveting tools were way to big to get into the tank, and while I considered buying another tool to cut up, I realised there really wasn't enough room anywhere to work it once I'd got it in the tank.  The only alternative I could come up with was screws and nuts, but that presented their own issues.  Screws short enough to not hit the bottom of the tank and damage coating or metal.  And how to hold the nut?

The screws ended up being M3 x 8.  The how being sticky tape, a wee spanner and a clamp to hold the assembly as required, given there's only enough access for one hand.






The typical amount of cussing later, Bob's ya aunty.


And then the pump went back in.