Donations towards server fund so far this month.

 
£0.00 / £100.00 per month
Page:
Home > Technical Chat > crankshaft weights

fastcarl

User Avatar

6965 Posts
Member #: 507
Fastest A Series Mini in the World

leeds/wakefield.




On 9th Jan, 2011 paul wiginton said:
It depends where the weight is though


well i dont take it off the centre of the crank sonny,lol

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE


paul wiginton
Forum Mod

User Avatar

5933 Posts
Member #: 784
9 times Avon Park Class C winner

Milton Keynes

Yes you did daddy, you drilled right through the tail, cant get more centre than that

I seriously doubt it!


apbellamy

User Avatar

16540 Posts
Member #: 4241
King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

On 9th Jan, 2011 Sprocket said:

On 9th Jan, 2011 apbellamy said:
My Force Racing crank which is a CAM6232 that has been wedged, back drilled, OD turned down to 125mm, cross-drilled big ends and hand clean up. No journal re-grind or hardening yet. Weighs in at 10.9KG.

Thats the same as matey's crank and he recons his is 9.9kg. I think he is having us on!!

Matey?? John?

His is knife edged, mine isn't.

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


John

User Avatar

10020 Posts
Member #: 1456
Mongo

Barnsley, South Flatcapshire

I make no promises for the accuracy of my scales. All I know is that there is almost a 2kg saving on the standard item.

If something is worth doing, it's worth doing half of.


Sprocket

User Avatar

11046 Posts
Member #: 965
Post Whore

Preston On The Brook




On 9th Jan, 2011 apbellamy said:
On 9th Jan, 2011 Sprocket said:

On 9th Jan, 2011 apbellamy said:
My Force Racing crank which is a CAM6232 that has been wedged, back drilled, OD turned down to 125mm, cross-drilled big ends and hand clean up. No journal re-grind or hardening yet. Weighs in at 10.9KG.

Thats the same as matey's crank and he recons his is 9.9kg. I think he is having us on!!

Matey?? John?

His is knife edged, mine isn't.


my mistake :S

modyfying a crank is like the Porsche 911 options brochure

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


fastcarl

User Avatar

6965 Posts
Member #: 507
Fastest A Series Mini in the World

leeds/wakefield.




On 9th Jan, 2011 paul wiginton said:
Yes you did daddy, you drilled right through the tail, cant get more centre than that


got to admit it kidda, your right,

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE


apbellamy

User Avatar

16540 Posts
Member #: 4241
King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

On 9th Jan, 2011 John said:
I make no promises for the accuracy of my scales. All I know is that there is almost a 2kg saving on the standard item.

Mine is done on the bathroom scales too. The same scales had a standard crank at 11.9KG

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


matty

User Avatar

8297 Posts
Member #: 408
Turbo Love Palace Fool

Aylesbury

Thread revival, have you done any testing on this yet Carl? :)

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi


paul wiginton
Forum Mod

User Avatar

5933 Posts
Member #: 784
9 times Avon Park Class C winner

Milton Keynes

Yes he has, hes found that it doesnt go rusty in his airing cupboard

I seriously doubt it!


Jason G

User Avatar

4360 Posts
Member #: 1459
En-suite user

Braintree, Essex

Saves ironing..........


On 30th May, 2013 paul wiginton said:
Yes he has, hes found that it doesnt go rusty in his airing cupboard

On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish.


On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood.


Been neglecting Turbo'd 'A' series..............


Turbo This..

User Avatar

1767 Posts
Member #: 9165
Previously josh4444

Australia, brisbane

im interested in how this wicked little crank went/survived as im hopping ill be lucky enough for Carl to do me a 1098cc crank or two for the weekend/after work toy


madmk1

User Avatar

5417 Posts
Member #: 6181
Double hard bastard

brookwood woking

Was there ever a conclusion to the question of lighter cranks are better?

As I have had a nice worked light crank sat in my airing cupboard for the last 3 years maybe, and I think it maybe time to fit it.

At the min I run what I think is a turbo crank that's full fat, with h rods and forged Pistons. And was working fine for me last year. I just don't want to be upgrading to a down grade.

Edited by madmk1 on 16th Feb, 2016.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


John

User Avatar

10020 Posts
Member #: 1456
Mongo

Barnsley, South Flatcapshire

It takes 2kg off your car Si look at it that way!

Engine will spin up faster due to there being less rotational mass (as it would with a lighter flywheel).

It won't make more power though on a dyno.

If something is worth doing, it's worth doing half of.


madmk1

User Avatar

5417 Posts
Member #: 6181
Double hard bastard

brookwood woking

Well it's not not about pub numbers,

I was thinking as I was swaping the flywheel and the timing gear for lighter options, there could be a good saving over all,

I just remember when I had a super light flywheel on there years ago I could not get the thing off the line, added a full fat one and the times started to drop.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


Sprocket

User Avatar

11046 Posts
Member #: 965
Post Whore

Preston On The Brook




On 16th Feb, 2016 madmk1 said:


I just remember when I had a super light flywheel on there years ago I could not get the thing off the line, added a full fat one and the times started to drop.


This is the nugget right there! The energy the flywheel absorbs spinning it up to speed is then returned to the system when you dump the clutch, making it easier to get the car going, a sort of crude kinetic energy recovery system *wink*

If your not reving the nuts off it, the heavy flywheel makes more sense.

On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........


slater

User Avatar

1030 Posts
Member #: 1291
Post Whore

Suffolk / Birmingham

True. It depends on where you want that energy tho. Yes you get that energy out when you dump the clutch but then you have to put it all back in again to get it spinning again as you accelerate furthe up the road.

Maybe if you have sticky tyres and a big turbo you want it when you dump the clutch and if you have 145s and a 3.9 diff you might want it once your moving im not sure but dont forget unless your revving it at max revs when you dump the clutch you wont be getting as much out as what you have to put back in too get to your first gearchange..

Makes sense in my head anyway


madmk1

User Avatar

5417 Posts
Member #: 6181
Double hard bastard

brookwood woking

Well at the min I happily Rev it to 8000rpm I will be fitting a lighter steel flywheel, as the alloy one was dog 💩.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


graemec

940 Posts
Member #: 1424
Post Whore

Carnforth, Lancs

In autotesting (think very light car with bags of low down torque needing to get off the line and up to speed quickly) the trick is to dump the clutch off the line and come of the throttle at the same time - letting the (full fat) flywheel initially get you moving with minimal loss of traction.
Once moving feed the throttle back on to start to accelerate, whilst trying to maximise traction.

If the wheels are spinning, you're wasting time.

Edited by graemec on 16th Feb, 2016.


jonny f

User Avatar

2094 Posts
Member #: 9894
Post Whore

Dorking




On 16th Feb, 2016 Sprocket said:



On 16th Feb, 2016 madmk1 said:


I just remember when I had a super light flywheel on there years ago I could not get the thing off the line, added a full fat one and the times started to drop.


This is the nugget right there! The energy the flywheel absorbs spinning it up to speed is then returned to the system when you dump the clutch, making it easier to get the car going, a sort of crude kinetic energy recovery system *wink*

If your not reving the nuts off it, the heavy flywheel makes more sense.


How heavy was your car then?

With less weight to pull this time round it might not feel the same. Food for thought. Maybe i'm wrong though!

Home > Technical Chat > crankshaft weights
Users viewing this thread: none. (+ 4 Guests) <- Prev  
To post messages you must be logged in!
Username: Password:
Page: