Asking about axles

Discuss and exchange views and technical information about our cars.

Moderators: scimjim, Roger Pennington, philhoward, Lukeyboy46, erikscimitardemon

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Sun Sep 30, 2018 12:08 pm

I've been looking through some old 'Slices; and I noticed a couple of items by the late great Robin Rew.

In the first he says that he has "fitted a few 3.07:1 ratio axles into overdrive SE5/5a's as they will pull this ratio quite easily..... but that gearing is too tall for the 6 series" and I'm puzzled as to why that would be the case, given that all the models have the same engine?

In the other article he says that spreading the axle casing is only necessary when fitting new diff bearings, not if reusing used-but-serviceable bearings. Is this correct?

I'm interested in axles at the moment because I'll have to do something about the GTC's one one of these days....

Alex.


1971 SE5 1977 SE6 1982 GTC

User avatar
Coupe Racing
RSSOC Member
Posts: 7366
Joined: Mon Jul 23, 2007 10:51 pm
Location: Nr Telford - Shropshire
Has thanked: 20 times
Been thanked: 97 times

Asking about axles

Post by Coupe Racing » Sun Sep 30, 2018 1:37 pm

When I have removed the CWP assy I have not to date needed to spread the case - but it is tight none the less


Blessed are the Cheese makers

Better to be an hour early than 1 minute late

roymck
RSSOC Member
Posts: 1114
Joined: Tue Mar 24, 2009 11:33 am
Location: Dorking Surrey
Has thanked: 15 times
Been thanked: 24 times

Asking about axles

Post by roymck » Sun Sep 30, 2018 2:07 pm

The 3.07 axle ratio works well in a SE5/5a but maybe due to the increased weight and increased frontal area it’s not suited for the larger cars . Never needed a axle spreader myself .



ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Sun Sep 30, 2018 4:55 pm

Interesting replies! I have a surplus axle lying about. Can't quite remember where it came from but I might have a play with it to see how hard it can be before I start on the GTC!


1971 SE5 1977 SE6 1982 GTC

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Sun Jan 13, 2019 6:07 pm

Right. I have the 'lid' off the axle, and I've taken the caps off the diff main bearings. I've arranged to borrow a slide hammer from the local garage to pull out the halfshafts, so after that the diff should be ready to come out. Is it just a matter of careful levering one side at a time, or is there more to it? :?

Alex.


1971 SE5 1977 SE6 1982 GTC

User avatar
scimjim
RSSOC Member
Posts: 38150
Joined: Sun Oct 01, 2006 10:08 pm
Location: Gloucester
Has thanked: 143 times
Been thanked: 1007 times

Asking about axles

Post by scimjim » Sun Jan 13, 2019 10:00 pm

Have the half shafts been out recently? If not, it’s unlikely a slide hammer will work.


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Sun Jan 13, 2019 10:43 pm

Not on this axle but that was how I got one out to renew a wheel bearing on the SE5


1971 SE5 1977 SE6 1982 GTC

User avatar
AJL Electronics
RSSOC Member
Posts: 7853
Joined: Fri Oct 17, 2008 8:49 pm
Location: Gloucester
Has thanked: 47 times
Been thanked: 241 times
Contact:

Asking about axles

Post by AJL Electronics » Sun Jan 13, 2019 10:47 pm

Half shafts will come out with a slide hammer, it's the hub that needs the skill and tools (like wot i az)!


Yes, we can mend your Scimitar!
Order your Scimitar parts any hour of the day at http://www.classicmicrocars.com (member's discounts).

Fancy a holiday in Gael, France? http://www.ianrhu.com

There is no point trying to teach a pig to sing. It doesn't work and it annoys the pig.

User avatar
GavinR
RSSOC Member
Posts: 475
Joined: Wed Dec 01, 2010 11:31 pm
Location: Bristol
Has thanked: 6 times
Been thanked: 19 times

Asking about axles

Post by GavinR » Sun Jan 13, 2019 11:11 pm

The diff may come out without a spreader, but it's easier with one
You need to keep the diff bearings parallel to the case

I made one from 3 pieces of angle iron, a length of 1/2" threaded rod and 2 M16 bolts with the heads turned down to fit in the 2 recesses either side of the diff casing


GavinR
RSSOC Member 3513
1971 SE5a
1970 SE5 Project

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Mon Jan 14, 2019 10:36 am

Never occurred that I could make my own spreader! I should have some angle iron lying around. I'm imagining a "U" of it, with the threaded rod on the open side to provide the opening force. But doesn't the rod have a tendency to bend under the strain?


1971 SE5 1977 SE6 1982 GTC

User avatar
GavinR
RSSOC Member
Posts: 475
Joined: Wed Dec 01, 2010 11:31 pm
Location: Bristol
Has thanked: 6 times
Been thanked: 19 times

Asking about axles

Post by GavinR » Mon Jan 14, 2019 1:14 pm

Yes, a "U" shape with the threaded rod on the open side
You're only stretching it a fraction to overcome the preload on the bearings, maybe 1mm or 2mm at the most
This is why you can get them out without a spreader


GavinR
RSSOC Member 3513
1971 SE5a
1970 SE5 Project

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Thu Jan 17, 2019 11:44 am

It seems Scimjim's prophecy has come true,the shafts aren't for coming out via slide hammering☹️ I undid the 4 bolts at the end of the axle, that 'should' be all that holds them in, so any other bright ideas?


1971 SE5 1977 SE6 1982 GTC

User avatar
GavinR
RSSOC Member
Posts: 475
Joined: Wed Dec 01, 2010 11:31 pm
Location: Bristol
Has thanked: 6 times
Been thanked: 19 times

Asking about axles

Post by GavinR » Thu Jan 17, 2019 5:29 pm

This is a pic of my spreader
Image

Slide hammering should work, but I've also removed halfshafts by removing the wheel cylinder from the back plate and putting a threaded rod through the resulting hole to the bracket on the axle and winding it out. I thought I had a pic of this but cannot find it. Also be careful not to bend the axle bracket if you try this...


GavinR
RSSOC Member 3513
1971 SE5a
1970 SE5 Project

ard126k
Posts: 751
Joined: Tue May 24, 2011 4:24 pm
Location: Fife
Has thanked: 7 times
Been thanked: 27 times

Asking about axles

Post by ard126k » Fri Jan 18, 2019 12:11 pm

Thanks for the picture Gavin. Pretty much what I imagined, save that I had all the angleiron facing the same way, which is silly because they wouldn't fit together properly!
I'll have a look at using threaded rod to push the shaft out. I'm going to need a more gentle method of working as one of my elbows has got damaged with all the crashing and banging the slide hammer about!


1971 SE5 1977 SE6 1982 GTC

User avatar
Roger Pennington
RSSOC Member
Posts: 20152
Joined: Tue Aug 29, 2006 9:43 pm
Has thanked: 157 times
Been thanked: 538 times

Asking about axles

Post by Roger Pennington » Fri Jan 18, 2019 4:00 pm

ard126k wrote:
Fri Jan 18, 2019 12:11 pm
as one of my elbows has got damaged with all the crashing and banging the slide hammer about!
been there, done that....... :roll: :oops:


....Roger

RSSOC member (since 1982)
- - - - - - - - - - - - - - - - -
Image

"Condition can be bought at any time; Originality, once lost, is gone forever" - Doug Nye

Post Reply

Return to “General Technical Discussion”