Herbert B drill

[atconut]

Ive got an old Herbert a bit bigger than that one. looks like the one in the pic has two speed pulleys and a two speed motor. mine has a single phase motor fitted now. it's much more useable at lower speeds. mine has a flat belt and two speed pulleys

 

[DanielW]

There doesn't seem to be any pictures on t'internet of them so I've been struggling to find anything to help with the speed thing.

Is using my lathe's inverter a reasonable idea? I would need to put a mains switch on the lathe so only one machine comes on at a time, is there anything I'm missing?

Speeds 3000 – 18000 RPM, R & F head, 6” x 6” T slotted table, ¼” capacity chuck.

You got a bargain....some are askin £275

 

[ronan]

nice.
waiting to get some ali to have go at making new set of pulleys for one of my presses to slow it down.
other options are 4th set of pulleys or washing machine drum pulley.
if you need pulley's let me know club had some from old dead stuff, they were in box of bits they take to shows to sell for donations.
can look see if they still have any for you.

Probably cheaper to go to an engineers suppliers or a bearing factors and just buy the pulleys you need ******.

 

[taycat]

ali is coming free from guy at club who as starting melting his own.
free as in had to supply bit's of ali for him to melt, and got set of alloy wheels of e-bay for £1.99 as badly scuffed.
so just need to clean it up and turn it.
my local place wanted fortune for set that had 8" pulley on it and small one was to big.
plus another skill learned if i get it right.

 

[ronan]

ali is coming free from guy at club who as starting melting his own.
free as in had to supply bit's of ali for him to melt, and got set of alloy wheels of e-bay for £1.99 as badly scuffed.
so just need to clean it up and turn it.
my local place wanted fortune for set that had 8" pulley on it and small one was to big.
plus another skill learned if i get it right.

WOW, the ultimate in recycling.

 

[Maker]

if you need pulley's let me know club had some from old dead stuff, they were in box of bits they take to shows to sell for donations.
can look see if they still have any for you.

Thanks for the offer, I'll see if I can make something up myself first.
I was thinking about casting some, I've got getting on for 30 pounds of scrap ally that's only been saved to cast it one day but I need to get/make all the equipment first.

Would it be worth phoning a local steel stockholder and asking if they have any offcuts of huge round bars?

 

[DanielW]

Do away with the pulley system and change it to Variable Speed drive......no belts to mess about with changing the speed...just an adjust knob and lock.

http://www.speedselector.com/products/fixed-center-drives/images/mc_350.jpg

 

[taycat]

Good place for short bits of metal is noggin ends .
Looking at doing my own casting as well eventually.
You looked at backyard foundry?
Need to get one of drill presses refurbed and other two lathes running first.

 

[taycat]

Isn't that similar idea as beetle engine used?
Saved pic to study later as might be useful on something else im looking at.

 

[DanielW]

Sorry that should have rewad CVT(Continuouse Variable Transmission)look up vids for it on youtube....tried to find the Lathe mod that had it installed.

 

[DanielW]

Beauty about this type of variable speed drive is the parts can be got secondhand in ebays automatic scooter parts section ie twist and go engines.

 

[Maker]

Do away with the pulley system and change it to Variable Speed drive......no belts to mess about with changing the speed...just an adjust knob and lock.

http://www.speedselector.com/products/fixed-center-drives/images/mc_350.jpg

I've seen one of them where the two half pulleys were made of fingers that interlocked with the other one he owner said he never uses it because it's so noisy.

I don't think normal pulleys are too inconvenient TBH.

Beauty about this type of variable speed drive is the parts can be got secondhand in ebays automatic scooter parts section ie twist and go engines.

That does look cool.

 

[ronan]

That system and a cheap tachometer and you could get your speeds bang on for every drill size.

 

[DanielW]

Its pretty easy to do as well,the finincky bit is the handwheel adjustment on the driven pulley,thats where you adjust the speed,the other pulley is on the motor shaft direct.

Needs a stiff spring on the driven pulley or is it both?

 

[DanielW]

That does look cool.

Worth doing on that drill of yours,was going to do it on my bench drill but its a bit ott on an Aldi effort

 

[Windy Miller]

Isn't that similar idea as beetle engine used?
Saved pic to study later as might be useful on something else im looking at.

I think that system was used on Daf cars back in the 60's and early 70's. Known as Variomatic transmission.

 

[roofman]

I think that system was used on Daf cars back in the 60's and early 70's. Known as Variomatic transmission.

correctomondo...i had one and joined the drive belt together after it snapped with 2 bent 2" nails

 

[the snooper]

correctomondo...i had one and joined the drive belt together after it snapped with 2 bent 2" nails

Volvo also used the variomatic system in the 80s

 

[Windy Miller]

Volvo also used the variomatic system in the 80s

Didn't Volvo buy out/take over Daf at some point? Or was it just the Variomatic thing that they bought?

 

[the snooper]

Didn't Volvo buy out/take over Daf at some point? Or was it just the Variomatic thing that they bought?

pass not sure, a guy once came to me with one he had just bought and stated there is something wrong with this auto box, I cant hear the gear changes