Monthly Archives

January 2014

Robert Burnett

machined the wedges square

January 29, 2014

so yesterday I machined the wedges square ,and now it all ready for welding , I hope to get that done this week .

also ordered the spigot bearing for the ford box , and I have a faint hope it fits in the flywheel not the crank on the transit ,which would make things simpler .

regards
robert

Robert Burnett

bearing carrier machined!

January 27, 2014

bit more boring shots of metal lol

managed to get the other end of the bearing carrier machined, and then the fit into the plate rebatenosity .happy with it all and now to weld it …oh yes !

Robert Burnett

more progress on the hub

January 24, 2014

v’s mini is now on hold till she comes back in summer ,and she’s helping me sort out the back barn before she goes home 🙁

the blasted billet is some weird metal , it drilled ok , if a bit slowly , but my new carbide cutter will only take off about 10 thou , if I try a deeper cut it squeals like a pig (boy). I tried everything from 60 to 850 rpm , raising and lowering centres, lube or no lube . cutting 10 thou is ok ,and leaves a finish like chrome .phew ,typical bloody stainless , except … its magnetic !

so new plan is to go to the magic scrapyard ,and grab a handfull of no2 morse drills, hopefully up to 40mm or whatever it needs to be ,then I can just machine the last little bit.

phew ,beware of free metal !

bet it will still weld though with my magic unobtanium welder . you really don’t want to know the price of a roll of wire for that .

little bit of progress..

turned down the shank of this 34mm drill to fit in the chuck ,and it didn’t snap off !!!

then generally hacked away at the 316 hub .bit by bit …

until I got the a rough .9mm off my final size at one end

and 5mm too long and too thick at the other …
also faced off the (extremely hard) plate , bit of chatter ,,but that’s ok i’m a talkative sort of chap.

so next step is to finish off the 5mm end ,and then counter sink it a bit more to fit deeperlyer into the plate, and then weld ,then machine final sizes .hot damn!

Robert Burnett

Hole down the middle of the “hub to be”

January 7, 2014

alrighty!

so making a hole down the middle of the’ hub to be’ was not too bad ,a couple of hours work ..

then all the way through was achieved..

bought myself one of these little boring bars to help along ..

now here’s a question I am wondering about ,if I construct the hub like so ,with welded webs to hold it strongly in place , how much will the welding distort the hub out of round ?

I was thinking it may be a good idea to make the hub roughed out ,then weld it to the plate with the webs ,then machine the rest ,what do you think ?
obviously it would be easiest to finish the hub ,and then weld it , but don’t want to have it go all wonky .

the wall thickness when finished is going to be approximately 3/4” 19mm. so pretty damn thick .

unfortunately with a 5” throw on the lathe ,and wanting to have a definately strong tough bearing carrier ( which now appears to be 316) I’m going to persevere with what I have ,the good thing is , if it breaks the gearlever will let me know lol.

ok this reminds me of a story ..

back in 1993…..

in my tvr 1972 2500m , I had ,at one time ,hooked up to the v8 turbo engine, a drivetrain consisting of a jag 4 speed ,with welded up overdrive , connected to a zf 4 speed gearbox from a van. this second box was turned round the other way with an outrigger bearing on the input shaft .and a coupling made up with the clutch spline welded in the centre .

this gave me any ratio I wanted cos I now had 4 overdrives .in 4th on the back box it would be 1:1, then as you changes up the back box , it would overdrive the front one ,because it was back to front .

you could now stall the engine at 100 mph.

I used it to give me 2000 rpm @ 120 mph for cruising .and got 37 mpg on a dellorto carb .

any rd up , the point is ,at one point I and my girlfriend were on our way to a dance about 80 miles away ,and about 10 miles from the destination , the bolts in the connection between the two boxes fell out..

well, all but one , so the rear box started going up and down as the coupling came out of line , gearlever going up and down 4 inches ,very funny .

I got my partner to go down the rd with a torch and find the bolts ,which she did amazingly ,and I banged it all back together and off we went .

robert