jack knight involute dogbox
Turbo Mini Forums

Hi.

after coming to rebuild my gearbox it was discovered that instead of a roller bearing being fitted to the lay gear a copper bush was fitted, this then sciezed on the layshaft.

anyway, turns out JKD have done the thing of fitting a non standard size bearing in order for them to get more money on bits etc.
So obviously as JKD have changed hands or something along those lines no one seems to know where to get said bearings. Its minispeed who now own JKD apparently and when Southam mini and metro centre phoned them up to seek a bearing Rod was told it was a bearing from a Triumph Spitfire, so he seeked one from a sellers only fo find out the bearing wont actualy fit.

Just wondering where i stand about trying to find a bearing to fit, Rod's rang around pretty much every engine builders MED rebuilt one 2 years ago and had to make an order from japan for the bearings.
Ether order from jap' or get a bearing made specialy.

anyone any other smart ideas? looks like im going to miss combe in anycase

Thanks David.

Edited by mini93 on 18th Sep, 2008.

David.

Have you tried emailing Jackknight. I think there still going. I think some of the mini7 club still get spares from them.

Team Racing

I think the knowledge base at JKD has gone with the wind, as i phoned up about getting the Maxi CV joints machined to fit Mini drive flanges. I was told that there is no modification and they were adament that they will fit a standard Mini dive flange, even after I argued that they dont.

It would appear that the large CV joint conversion is lost in history.

Anyone know how and where I can get this done? You can still buy the shafts.

Sprocket,

I'm pretty sure they fit straight in.

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

David.

Last time I wanted something from there, I just used the online form, had a reply in a few hours

Team Racing

Hang on,

I'm sure theres a joint that fits the hum but has a larger cv,

Allegro?

I recall it's 1500 maxi CV's that will fit without mods - these are larger, but that means even less room for the CV boot...

To quote from an old JKD 2005 catalogue with is probibly defunct

THE SHAFTS REQUIRE HARDY SPICER INNER & MAXI OUTER CV
JOINT. THESE REQUIRE MACHINING, PLEASE CALL FOR DETAILS.

http://www.jackknight.co.uk/pricelist/minipricelistfull.pdf



http://www.carparts-direct.co.uk/cv_joints_detail.cfm

Only one outer CV listed for the Maxi 1500

http://www.carparts-direct.co.uk/cv_joints_detail.cfm

Again Only one outer CV listed for the Allegro 1500

So which CV joint is larger and fits the Mini drive flanges? I will assume it is the Allegro 1500 as that is a different part to the Mini CV and the Maxi CV. So whats with everyone including JKD mentioning Maxi CVs??????

I am really confused

quote=mini93,18th Sep, 2008]

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

"did you know you can toast potato waffles?"

http://www.akbearings.co.uk/

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

"did you know you can toast potato waffles?"

the problem is he doesnt have a bearing as it was a copper bush before. he now needs a bearing to get back to square one.

nothing a set of verniers cant sort

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

"did you know you can toast potato waffles?"

they dont seem to do the types on that site (although i could be wrong)
Southam told me the OD for the bearing this morn' its apparently 23mm, normal ID for the standard lay shaft...i think
Not sure on the width though

David.

found a website who does 23mm OD bearings.
Does anyone know the internal diameter and wigth of a standard layshaft bearing? the bearing which is towards the diff side of the box?

Thanks.

David.

I think 1380turbo has a JK box, not sure if he built it. Maybe worth asking.

Jimster has one of these as well...

I've got the swifty / quaife dog box

Team Racing

ah, thats the one!

i've got a jkd dog box that will be apart this winter...

Rod at southam's pulled it off, theres a guy up north who bought some from japan. Theres now 4 left, I'd reserved 2 for myself (one for current build and one for future) Will be here wednesday. lucky he has one which is a customers so hes going to be able to supply my box to me for monday...engine should be back in mid next week...so relieved! Should be able to get to Combe now with luck

David.

For future reference, if its ever searched for. They are needle roller bearings, self contained in cage 23mm OD 18mm ID and width of 20mm.
good luck finding them on the net somwhere

David.

This is who can supply the taper roller bearings for JKD drops:

ESK International Ltd
ESK Centre
Whitebridge Way
Stone
Staffordshire
ST15 8JS
England

Tel: +44 (0)1785 285431
Fax: +44 (0)1785 817807

Im certain they will be able to sort you out, ask for Julie.

Joe

Edited by joeybaby83 on 19th Sep, 2008.

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

"did you know you can toast potato waffles?"