I had plans for lots of painting and taking bits off, except it hasn’t stopped raining. My knees no longer appreciate being cold and wet, so it was indoor stuff.
A decent look at the rear exhaust quickly showed it’s not worth refitting. Both boxes were already cracked and welded, the pipe had needed a repair. Now the intermediate box is split. And it’s absolutely full of water. ?
Now I could smack the box together and reinforce with weld. But I just can’t see it lasting.
If I’m fitting another exhaust it’s going to be stainless.
I have quite a few stainless bends in various sizes, so I thought of just buying some boxes, except all the rears available are smaller than standard. Less volume means more noise, I hate noisy exhausts, Soo, I thought I’d buy the parts and make a rear box. Err, no, a 10x6x16” case + end plates + perforated tube + wadding is over £120, before adding polished tube for tailpipes, flange or carriage.
So I’m going to buy sheet, perf tube, wadding, a flange and make the lot from scratch. Cos I’m stupid that way.
I have worked with stainless wire and small plate, I know it work hardens easily and can be a pain to form. I have some old scrap that was once a trolley, only 0.7mm when most exhausts are 1.2, but that should make it easier to form right? The shelf already has a partially formed fold, so I thought, feck it, I’ll make the box rectangular rather than oval. Some hardwood plywood, edges reinforced with ca and off we go.
I have enough for 4 end plates, so, 1 practice, 2 proper and one saviour if I feck anything up.
Problem 1 immediately apparent, it’s Really Hard, I was going to wreck the faces of my planishing hammers, switched to the ballpein. Problem 2, it doesn’t shrink like steel does, I battered and battered and battered the corners, but they simply would not fold and shrink. I’m sure the neighbours loved it. Resorted to experimenting with slitting it. It works, I now have a plan for a couple of little experimental pieces.
Really serious problem 3, you can’t stretch and cut the stuff with a dimple die. It should cut a disc out and form a dimpled flange. It warped to Friar Tuck.
Cutting a hole, then dimple die’ing, stretches the plate enough the pipe doesn’t fit. My next smallest die is 44.5mm and I want to use 50.8mm tube, will it work? Well, almost, there isn’t much in it, I should be able to cut that back to get a nice fit.
Further experimentation required, but I think I can get this to work out. Should end up straight through, no back pressure except the cat and yet quiet. I have a stupid plan for the shotgun tailpipes too!
A decent look at the rear exhaust quickly showed it’s not worth refitting. Both boxes were already cracked and welded, the pipe had needed a repair. Now the intermediate box is split. And it’s absolutely full of water. ?
Now I could smack the box together and reinforce with weld. But I just can’t see it lasting.
If I’m fitting another exhaust it’s going to be stainless.
I have quite a few stainless bends in various sizes, so I thought of just buying some boxes, except all the rears available are smaller than standard. Less volume means more noise, I hate noisy exhausts, Soo, I thought I’d buy the parts and make a rear box. Err, no, a 10x6x16” case + end plates + perforated tube + wadding is over £120, before adding polished tube for tailpipes, flange or carriage.
So I’m going to buy sheet, perf tube, wadding, a flange and make the lot from scratch. Cos I’m stupid that way.
I have worked with stainless wire and small plate, I know it work hardens easily and can be a pain to form. I have some old scrap that was once a trolley, only 0.7mm when most exhausts are 1.2, but that should make it easier to form right? The shelf already has a partially formed fold, so I thought, feck it, I’ll make the box rectangular rather than oval. Some hardwood plywood, edges reinforced with ca and off we go.
I have enough for 4 end plates, so, 1 practice, 2 proper and one saviour if I feck anything up.
Problem 1 immediately apparent, it’s Really Hard, I was going to wreck the faces of my planishing hammers, switched to the ballpein. Problem 2, it doesn’t shrink like steel does, I battered and battered and battered the corners, but they simply would not fold and shrink. I’m sure the neighbours loved it. Resorted to experimenting with slitting it. It works, I now have a plan for a couple of little experimental pieces.
Really serious problem 3, you can’t stretch and cut the stuff with a dimple die. It should cut a disc out and form a dimpled flange. It warped to Friar Tuck.
Cutting a hole, then dimple die’ing, stretches the plate enough the pipe doesn’t fit. My next smallest die is 44.5mm and I want to use 50.8mm tube, will it work? Well, almost, there isn’t much in it, I should be able to cut that back to get a nice fit.
Further experimentation required, but I think I can get this to work out. Should end up straight through, no back pressure except the cat and yet quiet. I have a stupid plan for the shotgun tailpipes too!
