head grinding
Turbo Mini Forums

right im gonna have a go at doing my chambers on me spare head but where do i get some grinder things from ive just looked on turbo phils site and seen his tungsten carbit cutters but where do you get them from?

no longer a series, but still 1.3 turbo.

any tool place try cromwell tools , good stuff , not cheap but good.

Everyone knows that instructions only have to be read if the thing doesn't work....

Ebay.... search for carbide burr

thats where i got mine from.

Sooperdooperturbocooperexpertengineering!

Or just use stones... they work fine and are used by profesionals :)

alex

AlexF

Alex, i don't know how much grinding you have done, but stones are ok for light touch ups but when some serios cast iron has to be done they done last very long.

I use carbide jobs for the Snap on man, money and time saved in the long run.

A fair number of heads...

True they ware, but they are easy to use, easy to re-shape and also cheap/easy to source!

Alex

AlexF

A set like this is whats needed. They ship worldwide too!



no connection to me....

Sooperdooperturbocooperexpertengineering!

good stuff , didn`t look at the shipping cost but goota be cheaper than UK. unless your mate nicks them from work for u.

Everyone knows that instructions only have to be read if the thing doesn't work....

$6.50

bout ?4.

Sooperdooperturbocooperexpertengineering!

the links not working now, but seen a few cheap tungsten carbide burrs on ebay, are they any good?

last time i bought a burr, it was £28, and it still going strong, do these £6 specials cut it?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Excellent excavating here!!

Edited by Vegard on 29th Sep, 2008.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I also bought quite a few off ebay recently (as my 20 year old ones were getting a but dull) but I avoided the "chinese" ones and only bid on actual auctions where they were clearly clearance stock and of UK/EU manufacture.

No problems so far and they were cheap enough that even if they have a shorter life, they will still be cost effective.

BTW, I use an air driven die grinder, not electric - from my experience in heavy industry they last longer when driven at the much higher speeds that air tools achieve.

Schrödinger's cat - so which one am I ???

bugger!
I thought carl was starting to make is toyota faster

what rpm does your air grinder go to?

mine seems quite slow when fed at 100psi?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

i think my mains powered cheapo dremel type tool is about uhmmmm 12,000 rings a bell but i cant be too sure, i'll have a look tomorrow when i do some porting on a little pit bike head hehe


i did one last week with it and it worked well with the stones but this is ally and they didnt exactly last very long either! so wouldnt really want to be doing loads on a cast head with stones.

i use a flexi drive thingy with it aswell and it works a treat for the small amount that ive been doing with it.

havent touched the mini head though but i got one off ebay a while back that looks like its been butchered with something so might have a play with that one and some of them ebay carbide bits.

Edited by James_H on 28th Sep, 2008.

I bought cheapo burrs from ebay. It cost about 15 quid for 5. I've used them quite alot and they are lasting quite well. There is plenty of life left in them. As Rod said, they are still worth getting even if they wont last forever.

Are air grinders really faster? My Hitatchi 220V grinder has an unloaded speed of 30,000RPM. What are air grinder speeds like? Electric grinders seem to hold speed better under load imho

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse

Hmmm...

Spanner is right. I also have a Hitachi (mine's 110V, an earlier version of this, http://uk.rs-online.com/web/search/searchB...oduct&R=0685415 ) and it's rated 25,000 unloaded and when I read the plate on my Desoutter it only says 24,000 at 90psi

All I can say is the Desoutter is faster in practice for me, probably because I connect it straight to my compressor at 140psi, never been a problem. At work we used to run them off a 120psi ring main, again, no problems.

We're restricted to 110v electrical equipment in industry and the 110V electric ones seem to lose speed very quickly under load then burn out - my home one is cobbled together from the best bits of three scrap ones from work !!!

The carbide burrs certainly last a lot longer at high speeds and light load.

Also, I find the electric ones very bulky but I guess everyone has their own preferences :)

Edited by Rod S on 29th Sep, 2008.

Schrödinger's cat - so which one am I ???

To get any kind of life & stock removal with stones they need to be run at high rpm. The slower you run them the quicker they wear. There are different grades of stone, i use the pink ones {silicone carbide} run at 25,000rpm they will remove a fair amount of material and with light use can leave a good finish, & the red ones for port work.
Carbides do not want to be run slowly or lightly, this will shorten their life. Ideally 18,000rpm & above with some pressure on the cutter, carbides aren't for polishing, they're for cutting. The stones do the finishing work.

WWW.TURBO-MINI.COM

Schrödinger's cat - so which one am I ???

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

bump, im after some stones too, the usual ones from draper/machine mart and the like say theyre only good to 6K rpm (think theyre for hand drills etc)

cant imagine one of them letting go at 25k very much fun either

managed to get 6 brand new (good quality) burrs for £25 notes on ebay the other day,

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...:MEWN:IT&ih=023

bargain

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

For a range of sizes,shapes and different qualities of cutters try jlindustrial.co.uk
They also do a huge range of engineering tools and equipment.
If you have a couple of hours to spare!!have a look at their catalogue.