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Messages - Gadorey

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Singles / Kick starter quadrant B31
« on: 21 June, 2022, 09:55:56 »
Hello everyone,

Does anyone have any experience with kick starter quadrants from India being sold on ebay (part No. 15-4121)?  are they any good, or are they poorly made?

I am also looking for an outer cover for my gearbox (part No. 66-3125 for a rigid frame B31/33), in case anybody has one available.


Twins / Re: Indian Tanks
« on: 03 May, 2022, 21:05:29 »
I‘ve ordered 2 tanks from royal choppers and was quite happy with them. One was for a 1946 B31 and another for an Ariel 350 NH.

What I did was to take a few key dimensions such as mounting points, emblems, height, width etc and asked them to do the same (w/out telling them what I measured  :)).  That way I was able to check if the tanks would fit or not. Both worked very well and were a straight fit w/out modifications.


I am also looking for some further parts which are missing:
Front brake plate part No. 65-5895
Rear brake anchor strap part No. 65-6275
Front Engine Plate cover part No. 65-4431

I have a front brake plate (images below) and an anchor strap.

Best wishes...

Thanks Bess,
I already found a brake plate and the strap I fabricated one myself. The next big work will be the gearbox and clutch (I’m fitting a later one). I’m sure I will need some parts but I shall see when I open the box up.

Pre War / Sloper S30-13 compression test
« on: 18 April, 2022, 18:26:09 »
Hi everyone,

Has anybody ever done a compression test on their 500cc OHV Sloper or on a similar 500cc BSA engine?  If so what values did you get.

I just tested my own Sloper and got 106psi with a warm engine, which sounds about right, but would like to have a comparison as reference.


Singles / 1946 B31 oil feed pipe in timing cover
« on: 17 February, 2022, 11:04:10 »
Hello everyone,

I need to replace the oil feed pipe (part nr 66-698) on the inside of the timing cover as the small pipe is broken off.

What is the best way to remove it? 

Thanks again for the help.


Singles / Re: 1946 B31 - question on front hub
« on: 19 January, 2022, 11:31:48 »
The later 7 inch half width hub, on the C25 B44 models from 1967 and the WDB40 used the same type of 7 inch half width hub but with a different spindle assembly. Yours may be this type. Below from the 1967 B44 parts book.

Julian, that seems to be indeed what I have. 

Idie, my offside fork does have the welded lug.  And interestingly the bearing lock ring on the offside is not a LH thread, which it should be on the 7" hub. 

Singles / 1946 B31 - question on front hub
« on: 19 January, 2022, 08:05:27 »
It seems at some time in its live my 7” front hub was modified – instead of the spindle, spindle sleeve, spacers etc of the 7” hub with steel backplate (upper diagram), it has the spindle and sleeve of the later 8” hub (lower diagram).  At first I thought I might actually have a 8” hub, but measuring, it is indeed a 7” one.  The drum has a diameter of about 178mm or 7”.

Has anyone seen something like this?  Was this a combination I am not aware of or likely to be a modification done at some time during the bike’s life?


Singles / Re: 1946 B31 - Steering head bearing (and some other parts)
« on: 18 January, 2022, 21:01:29 »
Thanks Pete, I’m in Helmstedt. What I need I’ve listed above, so if you hear anything let me know. I will come back to you for details on the mod, once I find a gearbox 😀

Singles / Re: 1946 B31 - Steering head bearing (and some other parts)
« on: 18 January, 2022, 15:28:40 »
Yes, you are right, but it can be done.  There’s a threat here in the forum about it.
I believe it’s my better option considering the state of my original gearbox and the difficulty in getting parts for it.

Singles / 1946 B31 - Steering head bearing (and some other parts)
« on: 18 January, 2022, 13:23:14 »
Hi everyone,

I am looking for a steering head bearing top cone part No. 65-5319.  The bearings on the 1946 B31 are different than the later ones (1" inner diameter), and were also used on Bantams.  Unfortunatetly I haven't been able to find one anywhere, and am hopping someone might have one lying around.  At the moment this small part is keeping me from coming further with the restoration. Alternatively, does anyone know of a suitable taper bearing that would fit? 

I am also looking for some further parts which are missing:
Front brake plate part No. 65-5895
Rear brake anchor strap part No. 65-6275
Front Engine Plate cover part No. 65-4431

...and a complete gearbox....  Mine is too far gone to try saving it (bike was found in very poor condition with water and mud inside...).  I would actually rather use the later gearbox introduced in 1948 as the parts for the early one are impossible to find.  I know the differences and would mmodify the later box to fit my 1946 bike.

So if anyone can help, I would be very grateful.  I am located in Germany.


Pre War / Re: 1932 500cc Sloper gearing
« on: 04 December, 2021, 11:14:56 »
As a reference my S30-13 (500cc OHV) with a 3 speed Gearbox has the following:
Engine sprocket 21t
Clutch wheel 48t
Gearbox sprocket 19t
Rear wheel chain wheel 42t

Pre War / Re: 500cc Sloper headstock bearings.
« on: 27 October, 2021, 12:29:15 »
According to my information, the cup and cone bearing has a 1.520” pitch circle and carries 18 1/4” dia balls in V-groove race O/D 1.933” - so a total of 36 balls for top and bottom.

The 1/4” balls should be easy enough to source. The problem is always finding the cups and cones.


Pre War / Re: Sloper rebuild
« on: 27 July, 2021, 09:42:27 »
Very good!  You must let me know how it performs once it’s running. Whatever I try, mine seems to be very lack luster and doesn’t go beyond 90 km/h.

Pre War / Re: Sloper pistons
« on: 27 June, 2021, 13:29:38 »
Hi Mike,

Glad it worked out!


Singles / Re: B31 Poor Performance
« on: 24 June, 2021, 19:24:38 »
The plug you’re using is fine. Even if it was too hot or cold, it would just improve the combustion but not explain the lack of performance like you are having. Even if oil is getting in there it also wouldn’t explain such a lack of performance.

Most things have been covered:
Good spark from magneto
Proper ignition timing
Good and clear fuel flow
Correct valve timing
Valves closing completely
Correct valve timing
Correct carb set up
Correct spark plug and gap
Exhaust is not blocked

Only two other things I can think of
Wrong cams
Slider not opening all the way when you twist the throttle fully open

Is there any change when you’re pulling at constant speed and play with the choke lever?

No more ideas at the moment…

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