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Messages - MGI

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1
Need help finding that old BSA / Re: BSA Goldstar 500 (1955)
« on: 16 June, 2022, 11:33:21 »
I thought the same thing on the basis that the barrel looks to be cast, not aluminium but is there some way you can isolate the engine as a 350 and not a 500?

2
Twins / Re: Cracked cylinder liners
« on: 09 June, 2022, 11:14:15 »
I remember putting new pistons into a 500 Fiat, couldn't get the right ones but Gordon Moss Engineering suggested fitting Vauxhall Viva pistons which had identical dimensions etc. The only problem was the push rod to the petrol pump went from the cam on one side of the engine to the lift pump on the opposite side of the engine - this fouled the slightly different skirt of the one piston so I hack sawed a section off the offending piston skirt to allow the pushrod to work! - worked OK never had any problems with the mod all the time senior management had the car!

3
Singles / Re: WORKSHOP MANUAL
« on: 08 June, 2022, 20:43:29 »
I have heard very good things relating to the Rupert Ratio manuals! Plus I believe he is a member of this forum...

4
The Star and Garter / Re: A Royal BSA C10
« on: 03 June, 2022, 07:42:07 »
I was riding a B31 - still am!

5
The Star and Garter / Re: Big bike prices....
« on: 31 May, 2022, 17:48:09 »
The plethora of old bike auctions would fly in the face of these comments! In the case of the masses attempting to sell the more available machines at probably highly optimistic (read inflated) prices there will always be difficulties, overall I think a profit is still there to be made but only at sensible prices. Where much hard earned has been expounded on generally available machinery the outlook is grimmer - the addition of an electric starter on my B33 will mean that it is unlikely to sell at a price that includes the cost! Likewise the TLS, the Ally rims and stainless spokes etc!

6
Singles / Re: Oil on fins
« on: 18 May, 2022, 10:57:28 »
In respect of Chaz's post commenting that Hiscox did not come across many porous barrels, only a handful a month. I assume that there is an element of humour therein on the grounds that a handful a month is a considerable number.

7
The Star and Garter / Re: Gold Star - new.
« on: 18 May, 2022, 10:51:25 »
It is ironical that over 95% of 'Indian' restaurants are owned & staffed by Asians of Bangladeshi origin! Likewise the the fare.

8
The Star and Garter / Gold Star - new.
« on: 16 May, 2022, 17:07:20 »
Seems to have gone a bit quiet on the new Goldy front - or have I missed something?

9
Singles / Re: Rebuilt B25 wont start what am I doing wrong
« on: 14 May, 2022, 10:37:43 »
Easy start is a good way to get an engine fired up and often once it gets going on it, it then becomes easier to start. I always laugh when people tell me that easy start is bad for an engine and that the engine becomes addicted to it, as if the engine was human!

10
Singles / Re: Most suitable petrol for an M21?
« on: 21 April, 2022, 18:22:48 »
Harvest Fuels (super) in the Midlands have no ethanol in common with Esso, there are a few others but I as I am close to both of the above I have not enquired further. Interestingly Esso in Cornwall does have ethanol added and probably it does in the North of England.

11
Singles / Re: B31 starting advice?
« on: 19 April, 2022, 17:28:00 »
My B31 (&B33) will always start if I tickle it until petrol drips out of the bellmouth, no choke & slightly retarded - long slow kick and away!

12
Twins / Re: Oil Pressure Switch A65
« on: 08 April, 2022, 13:19:55 »
The normal reason for the warning light is just that - to warn of what could be a catastrophic loss of oil pressure. Obviously if it occurs at tick over it is a matter of seconds to check inside the oil tank, I think riders like the reassurance that the oil is circulating as it should at higher revs out on the road! If the light illuminates at high speed (relative) stopping the engine immediately could avert a disaster - whether or not the light function would be noticed at speed is another matter!

13
Twins / Re: A65 front brake
« on: 29 March, 2022, 09:08:17 »
Before total commitment would anyone care to comment on the advisability of leaving the hub restraining spigot as it is given that it is over halfway into the groove? It would appear that it is virtually impossible to disconnect them without removing the wheel.

14
Twins / Re: A65 front brake
« on: 26 March, 2022, 15:06:58 »
Ironically I have the self same problem with my B33 - I have changed the lower fork legs for the type where the right hand leg has the square protrusion to locate in the TLS assembly - problem (I think) is that the protrusion only enters the square groove about half way. Given that the spindle has grooves at each end to positively locate the retaining axle clamps it doesn't appear that the hub position can be laterally adjusted. There is a large nut on the right hand side of the spindle which secures the brake drum to the spindle as it pushes it against a shoulder in the depths of the spindle but I cannot see that loosening that would help although it would allow the locating groove to move further over the protrusion but not in a positive or permanent way. It seems that one solution would be to extend the length of protrusion by methods discussed already, or build up the ally groove, as also discussed previously. My question would be, would welding the steel extension 'en situ' cause any problems with the electrical system? I say this because it would be more expedient  to remove the one axle clamp and rotate the fork leg to provide easy access to the spigot than having to dismantle the whole lot again! Equally, it would be quite simple to remove the wheel to allow the slot to be built up. Worcester (where I live) has a plethora of specialist ally welding companies located within or close to the city!

15
Singles / Re: BSA Gearbox ratios - BSA M33/B33 etc
« on: 18 March, 2022, 22:45:08 »
The gearbox ratio that would affect maximum speed is the top gear ratio and that is always direct and cannot be changed. The easiest change would be the rear sprocket, or perhaps the engine sprocket, the gearbox sprocket involves the removal of the gearbox. Perhaps you might purchase one of the readily (Cheap approx 12) available electronic rev counters which operate off a wire wrapped around the plug lead, you might then gas it in 3rd and observe the revs & then gas it in top & do likewise... if the revs in top are lower than in 3rd it would be pointless changing to a smaller rear sprocket as the engine cannot pull enough revs as it is without over gearing it!

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