Search found 216 matches

by halfpenny
Sat Jun 15, 2019 11:02 am
Forum: General Technical Discussion
Topic: Overdrive clutch type
Replies: 8
Views: 110

Overdrive clutch tyoe

Also pull out the pressure relief valve and clean it up; these can get very mucky and sticky.
by halfpenny
Sat Jun 15, 2019 9:03 am
Forum: General Technical Discussion
Topic: Overdrive clutch type
Replies: 8
Views: 110

Overdrive clutch tyoe

Have you checked the gearbox oil level?
by halfpenny
Fri Jun 14, 2019 12:00 pm
Forum: General Technical Discussion
Topic: FRONT HUB FELT SEALS
Replies: 7
Views: 164

FRONT HUB FELT SEALS

My observation was that a smaller 5a stub axle had a vertical link with small diameter felt seal shoulder. The replacement larger stub axle assembly had a larger diameter seal shoulder. Both seemed to be original assemblies. So not all vertical links are equal, at least so far as the diameter of the...
by halfpenny
Fri Jun 14, 2019 9:12 am
Forum: General Technical Discussion
Topic: FRONT HUB FELT SEALS
Replies: 7
Views: 164

FRONT HUB FELT SEALS

My record shows 5a grease seals have an o/d of 2.1". Small i/d (= vertical link boss o/d) was 1.375 "; large i/d was 1.5". I guess a spacer could be fitted to grow the smaller boss, but mine had a smaller i/d felt seal (ie no spacer), so two sizes were clearly available.
by halfpenny
Thu Jun 13, 2019 4:23 pm
Forum: General Technical Discussion
Topic: FRONT HUB FELT SEALS
Replies: 7
Views: 164

FRONT HUB FELT SEALS

5a small diameter stubs certainly take a smaller felt seal than the larger stubs ( because the vertical links have a different diameter shoulder)
by halfpenny
Wed May 22, 2019 5:28 pm
Forum: Scimitar Sightings
Topic: near Fort William
Replies: 0
Views: 166

near Fort William

Dark red SE5a, LLY###K. Rear anti-roll bar. I followed today from the road works to the canal. Tracked straight and true, but rear dampers seemed tired, judging by the bouncing. Also a puff of smoke from the nearside exhaust when, I'm guessing, overdrive top was engaged. Much nicer colour than my fi...
by halfpenny
Thu May 16, 2019 6:08 pm
Forum: Se6/6a/6b/GTC
Topic: What kind of washer
Replies: 4
Views: 320

What kind of washer

Might have been a dowty washer
by halfpenny
Wed May 08, 2019 12:04 pm
Forum: Se5/5a
Topic: failed overdrive
Replies: 10
Views: 658

failed overdrive

Just to close this off, turned out that the outer ring of the one way clutch was spinning in the casing - hence no drive. New oversize ring fitted as part of a full rebuild, so all will now be well.
by halfpenny
Wed May 01, 2019 7:00 pm
Forum: Se6/6a/6b/GTC
Topic: 6a overdrive cleaning.
Replies: 9
Views: 377

6a overdrive cleaning.

Dowty washer would be favourite.
by halfpenny
Mon Apr 29, 2019 8:05 pm
Forum: General Technical Discussion
Topic: Overdrive Selection advice
Replies: 11
Views: 469

Overdrive Selection advice

I think a neutral throttle change is best practice, and avoids an unecessary torque reversal. Can't see the point of dipping the clutch.
by halfpenny
Mon Apr 29, 2019 12:53 pm
Forum: General Technical Discussion
Topic: Slimmest tyre for a Dunlop Composite?
Replies: 24
Views: 881

Slimest tyre for a Dunlop Composit?

Bear in mind that an old tyre will generally give heavier steering than an new tyre of the same type, simply because the side walls become soft. Also new tyres of modern construction can give lighter steering, as I found on my fifties classic where new Michelin radials are in fact lighter than the o...
by halfpenny
Sun Apr 28, 2019 5:58 pm
Forum: Se5/5a
Topic: failed overdrive
Replies: 10
Views: 658

failed overdrive

Bell housing off and clutch checked - like new, so a bonus. Two points of interest. A hardened thick washer between the clutch fork and its pivot post on the bell housing, and no external return spring for the clutch fork. The latter seems a strange omission, but there is no hole to hook a spring in...
by halfpenny
Fri Apr 26, 2019 6:19 pm
Forum: Se5/5a
Topic: failed overdrive
Replies: 10
Views: 658

failed overdrive

Thank you Peter. A job for tomorrow.
by halfpenny
Fri Apr 26, 2019 5:33 pm
Forum: Se5/5a
Topic: failed overdrive
Replies: 10
Views: 658

failed overdrive

Thanks for the photo. Quite straightforward and out this morning. BTW, drained weight of gearbox and o/d is 45Kg. It looks as if the bell housing will come off for clutch inspection - anyone say no?
by halfpenny
Thu Apr 25, 2019 7:04 pm
Forum: Se5/5a
Topic: failed overdrive
Replies: 10
Views: 658

failed overdrive

Thanks Phil. I have a tell tale lamp for the same purpose. Looks like gearbox out tomorrow and a trip to Dave Twigger at Overdrive Services in Rugby- fortunately just down the road.

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