Can someone post the pulley diameters for: crankshaft, dynamo and for those that are in the Shorrock supercharger mode: crankshaft pulley diameter for this supercharger?
I purchased a Shorrock sans pulleys and am slowly learning about it's idiosyncrasies.
Many Thanks,
Tim Bloomfield
TB0613
Louisiana
Pulley Diameters
Re: Pulley Diameters
Hi Tim : I have a 48 MG TC fitted with a period correct Shorrock blower(super charger) going thru growing pains myself. I've refitted the pullys (single charger) (double crank) facilitating belt change without lifting engine . I'm still
designing tensioner and hold plate. Great idea , execution questionable . Please help from any one .Your crank pully is a triple I believe . I'll measure double for blower and tell you.TC
designing tensioner and hold plate. Great idea , execution questionable . Please help from any one .Your crank pully is a triple I believe . I'll measure double for blower and tell you.TC
Re: Pulley Diameters
Have you guys seen this article from the "resources" here on this site? The article is not specific to XPAG engine, but it may be of use in figuring sizes for pulleys. On pages 5-6 this article. May be helpful?
http://www.mg-tabc.org/supercharger/Shorrock_ABC.pdf
or, same thing at:
>Resources
> Supercharging the XPAG
Then 1/2 way down page to
> "The A.B.C. of Shorrock Supercharging, By J. Peck
and look on pages 5-6
http://www.mg-tabc.org/supercharger/Shorrock_ABC.pdf
or, same thing at:
>Resources
> Supercharging the XPAG
Then 1/2 way down page to
> "The A.B.C. of Shorrock Supercharging, By J. Peck
and look on pages 5-6
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ferricsteed
- Posts: 69
- Joined: Wed Oct 15, 2014 5:46 am
Re: Pulley Diameters
Thank you Duncan. This actually is the document I am trying to get an independent confirmation of. This article states: 'The main crank pulley is replaced with the three-vee- grooved 115.5mm single vee to twin 89mm dia pulley. The 89mm size pulley is the drive for the supercharger".
The questions I am posing is what is the diameter of the standard single groove crank pulley that drives the generator. I am inferring from the article this crank pulley diameter is 115.5mm. This pulley would be replaced with a three groove pulley with the same 115.5mm groove to drive the generator plus two smaller grooves of 89mm diameter to drive a two groove supercharger pulley of 82mm diameter or any diameter of ones choosing pending the boost level desired. My desire is the 6 to 7 psi boost. Moss had marketed this supercharger for the 1250 cc xpag engine. I had read from other unsubstantiated sources with different diameters.
Additional info is the diameter of the generator pulley for general knowledge.
I may well be reading this article incorrectly. I am having both pulleys being made but want to make sure ai am telling the machinist the correct diameters.
Many Thanks,
Tim Bloomfield
TB0613
Louisiana
The questions I am posing is what is the diameter of the standard single groove crank pulley that drives the generator. I am inferring from the article this crank pulley diameter is 115.5mm. This pulley would be replaced with a three groove pulley with the same 115.5mm groove to drive the generator plus two smaller grooves of 89mm diameter to drive a two groove supercharger pulley of 82mm diameter or any diameter of ones choosing pending the boost level desired. My desire is the 6 to 7 psi boost. Moss had marketed this supercharger for the 1250 cc xpag engine. I had read from other unsubstantiated sources with different diameters.
Additional info is the diameter of the generator pulley for general knowledge.
I may well be reading this article incorrectly. I am having both pulleys being made but want to make sure ai am telling the machinist the correct diameters.
Many Thanks,
Tim Bloomfield
TB0613
Louisiana