10CC flywheel?
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- Minor Fan
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10CC flywheel?
Does this look like a 10CC flywheel?
Looks like IRB. or possibly LRB.
And any ideas what these letters mean?Looks like IRB. or possibly LRB.
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- Minor Maniac
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Re: 10CC flywheel?
The standard 1098cc flywheel has a centre hole of 1 3/4"
The 10CC flywheel mounting bolt PCD is also larger than the standard 1098cc flywheel which has a PCD of 2.5". So if the PCD (diagonal) is larger than 2.5" and the flywheel centre hole is larger than 1 3/4" it can be safely assumed to be a 10CC unit.
Here is link about 'A' Series Sprite/Midget flywheels:-
http://www.spriteparts.com.au/tech/flywheels.html
See also:-
http://www.spritespot.com/phpBB3/viewto ... =14&t=5948
If looks as if the flywheel has been PCD re-drilled and the centre machined to fit the 10CC crankshaft.
See also:-
viewtopic.php?t=56808
The 10CC flywheel mounting bolt PCD is also larger than the standard 1098cc flywheel which has a PCD of 2.5". So if the PCD (diagonal) is larger than 2.5" and the flywheel centre hole is larger than 1 3/4" it can be safely assumed to be a 10CC unit.
Here is link about 'A' Series Sprite/Midget flywheels:-
http://www.spriteparts.com.au/tech/flywheels.html
See also:-
http://www.spritespot.com/phpBB3/viewto ... =14&t=5948
If looks as if the flywheel has been PCD re-drilled and the centre machined to fit the 10CC crankshaft.
See also:-
viewtopic.php?t=56808
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- Minor Fan
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Re: 10CC flywheel?
PCD is 2.75 and there’s no evidence of any redrilling.
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- geoberni
- Minor Legend
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Re: 10CC flywheel?
I don't mind displaying my ignorance of such things...... A what flywheel?
10CC?
As opposed to what?
I thought flywheels were 803, 948, 1098 cc etc
10CC?
As opposed to what?
I thought flywheels were 803, 948, 1098 cc etc
Basil the 1955 series II
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- Minor Fan
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Re: 10CC flywheel?
Sorry Geo, some Midgets had a ‘stronger’ 1098 engine, the crank had 2” mains rather than 1.75”
, it’s known as a 10CC rather than 10CG.
, it’s known as a 10CC rather than 10CG.
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Re: 10CC flywheel?
Poolguy
Thanks for posting the photos with rule - I can now add those dimensions to my data base.
Phil
Thanks for posting the photos with rule - I can now add those dimensions to my data base.
Phil
- geoberni
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Re: 10CC flywheel?
Thanks, it makes sense for the 'sportier' motor.
All these different numbers, depending on whether 'original' or reconditioned Silver Seal/Gold Seal........
Basil the 1955 series II
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Re: 10CC flywheel?
Dophilthehill wrote: ↑Tue Dec 03, 2019 3:15 pm Poolguy
Thanks for posting the photos with rule - I can now add those dimensions to my data base.
Phil
You think it’s safe to say it’s a 10CC flywheel? I only ask because I was mistakenly sold it as suitable for my 1098 rebuild, I don’t want to pass it off on ebay as something it isn’t. And I still need a 1098 Minor flywheel
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- Minor Maniac
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Re: 10CC flywheel?
A bit of additional information about the 10CC engine - To comply with the requirements of the Formula Junior regulations BMC had to produce a certain number of production blocks - so the 10CC engine was not really produced to be a sportier engine but the basis of a racing engine acceptable for inclusion in the Formula Junior racing series.
Below is one of the derivative 'A' Series made for the Formula Junior race series
Below is one of the derivative 'A' Series made for the Formula Junior race series
Last edited by philthehill on Tue Dec 03, 2019 5:21 pm, edited 2 times in total.
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- Minor Maniac
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Re: 10CC flywheel?
Poolguy
I am certain as far as I can be that the flywheel in question is from a 10CC engine.
10CC engine flywheels fetch a very good prices because they are rare and sought after.
Anyone who is after a 10CC engine flywheel will know his/her onions and will be able to determine its originality.
I think that you are quite in order to advertise it as a !0CC engine flywheel. Include the dimensions that you have shown in the above photos.
Here is a genuine 10CC flywheel on 'e' bay for comparison. You can use the various datum points to compare.
Note the price - when they do come up for sale they are all offered around the £90 - £110 plus and they do sell at that price.
https://www.ebay.co.uk/itm/MG-MIDGET-FI ... SwXetZQlzY
Phil
I am certain as far as I can be that the flywheel in question is from a 10CC engine.
10CC engine flywheels fetch a very good prices because they are rare and sought after.
Anyone who is after a 10CC engine flywheel will know his/her onions and will be able to determine its originality.
I think that you are quite in order to advertise it as a !0CC engine flywheel. Include the dimensions that you have shown in the above photos.
Here is a genuine 10CC flywheel on 'e' bay for comparison. You can use the various datum points to compare.
Note the price - when they do come up for sale they are all offered around the £90 - £110 plus and they do sell at that price.
https://www.ebay.co.uk/itm/MG-MIDGET-FI ... SwXetZQlzY
Phil
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- Minor Fan
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Re: 10CC flywheel?
Cheers Phil. Hopefully I can offset some of the hassle. I really didn't think it'd be difficult to get a 1098 flywheel. First one was never sent by the seller on Ebay. Then this one isn't the right one