Back in January, before I started work on the crankshafts and before my little Grandchildren laid us out with those pre-school viruses they love to share, I was assembling the toolbox and some bits around it. I wrote about it here.
Workshop time for bikes often occurs as a distraction from something domestic you are supposed to be doing but have become tired of - or maybe I have a short attention span; so it was that yesterday found me building shelves for my off-grid battery bank and making a horn bracket while the glue dried.
You'll recall that I have a toolbox which may be too early for my FH. The bottom bracket looks like this
Ariel do not list a separate horn bracket for 1958 and here's why - the horn bolts directly to the toolbox tab as shown in MickD's picture below. As you can see, I don't have those holes on my toolbox! The swinging arm toolbox carried a -54 part number through to the end of four stroke production, so I must have an earlier incarnation of the same part, designed to be used with an Altette and not the Lucas HF1441 horn used in 1958.
I needed to make an intermediate bracket, or modify my toolbox. I have the correct Lucas HF1441, which I think came from eBay. It has a right angle bracket, retained to the multi-leaf horn bracket with two 2BA hex head screws:
As always with any sheet metal work, we mock up the required part in cardboard and test it for fit:
Then, with some Dykem marking blue we can lay it out on a bit of 4mm sheet. It's hard to see with the lighting, but I have punched witness marks around the perimeter of the part to help me see the shape during the filing & linishing that will happen later:
Cut out commences with the hacksaw, and carries on with files and the linisher - a very useful tool that I acquired recently.
The holes were actually drilled while the part was still square - so that it could be clamped securely in the machine vice on the drill press:
Test fit - good to go to paint I think, though it's very close to the upturn on the toolbox bracket. I'll need to deal with that as the toolbox may get powder coated.
Workshop time for bikes often occurs as a distraction from something domestic you are supposed to be doing but have become tired of - or maybe I have a short attention span; so it was that yesterday found me building shelves for my off-grid battery bank and making a horn bracket while the glue dried.
You'll recall that I have a toolbox which may be too early for my FH. The bottom bracket looks like this
Ariel do not list a separate horn bracket for 1958 and here's why - the horn bolts directly to the toolbox tab as shown in MickD's picture below. As you can see, I don't have those holes on my toolbox! The swinging arm toolbox carried a -54 part number through to the end of four stroke production, so I must have an earlier incarnation of the same part, designed to be used with an Altette and not the Lucas HF1441 horn used in 1958.
As always with any sheet metal work, we mock up the required part in cardboard and test it for fit:
Then, with some Dykem marking blue we can lay it out on a bit of 4mm sheet. It's hard to see with the lighting, but I have punched witness marks around the perimeter of the part to help me see the shape during the filing & linishing that will happen later:
Cut out commences with the hacksaw, and carries on with files and the linisher - a very useful tool that I acquired recently.
The holes were actually drilled while the part was still square - so that it could be clamped securely in the machine vice on the drill press:
Test fit - good to go to paint I think, though it's very close to the upturn on the toolbox bracket. I'll need to deal with that as the toolbox may get powder coated.
No comments:
Post a Comment