Tuning Tips
- Diesel Dave
- Posts: 11055
- Joined: Tue Oct 13, 2009 7:25 pm
- Rides:: 1965 Enfield Diesel, 2017 Sterling, Modenas Kriss and CT200 - the only Cub left
- Location: Brentwood, Essex
Re: Tuning Tips
I can see an extra 60 watts that could be freed up.
- Alan CF
- Posts: 6761
- Joined: Mon May 09, 2011 6:10 pm
- Rides:: CUB RACING small cc engine rebuilds crank repairs
- Location: CHESTERFIELD
Re: Tuning Tips
Dont worry Dave, ones on order. will show pics once fitted.Diesel Dave wrote:I can see an extra 60 watts that could be freed up.
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- Posts: 20
- Joined: Thu Oct 04, 2012 10:04 pm
- Rides:: CB500
Re: Tuning Tips
Show us your 4 speed gearboxes
- Alan CF
- Posts: 6761
- Joined: Mon May 09, 2011 6:10 pm
- Rides:: CUB RACING small cc engine rebuilds crank repairs
- Location: CHESTERFIELD
Re: Tuning Tips
As the pictures show ours is a 3 speed,smiffy46 wrote:Show us your 4 speed gearboxes
Anyone fitting a 4 speed will get pushed up to open class when its goes through the scrutineering.
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- Posts: 27
- Joined: Wed Aug 24, 2011 12:16 pm
- Rides:: C90T, TDM900, RGV250L, F800RS
- Location: Dublin
Re: Tuning Tips
Has anyone changed the internal gearing. I dropped to a rear 36 (standard 15 up front) and whilst it was a very useful 2nd gear for slow corners around a wet Mondello there was just too big a gap to third and we were losing out on acceleration in 3rd gear. We (Team Black n Blue) finished 11th out of 44 overall and 6th in the standard 90 class. I reckon if we had a closer ratio between 2nd and 3rd it would a move us up a few places whilst still retaining the 3 speed semi auto needed tonstay in the rules.
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- Joined: Wed Feb 01, 2017 10:50 am
- Rides:: ZX9R, RD500LC, RG250III, RS125SP, WR450F, TC250, REV3 250 and 2 Cubs!
Re: Tuning Tips
I'm sure everyone else is running stock ratios so...
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- Posts: 29
- Joined: Mon Oct 24, 2016 1:27 am
- Rides:: Bros 680, Daytona 675
Re: Tuning Tips
Our engine's just finishing being rebuilt with its new sandcast magnesium cases, which should, along with the carbon fibre seat, legshields, wheel spokes and fuel tank, make it a fair bit lighter, although i haven't weighed it yet. As the rules specify standard carbs and an unmodified manifold, we've fabricated an extra kind of candlestick holder type manifold to put on top of our normal one, which will allow us to run 4 standard carbs at the same time. Our first couple of dyno runs aren't exactly superbike levels but 37hp at the wheel is pretty good going, i think. The only regret is not getting a slightly wilder grind on the titanium cam. Other than that, we're good to go, see you at Mallory!
Some of this may not be true, including the bit about us being good to go.
Some of this may not be true, including the bit about us being good to go.
- Alan CF
- Posts: 6761
- Joined: Mon May 09, 2011 6:10 pm
- Rides:: CUB RACING small cc engine rebuilds crank repairs
- Location: CHESTERFIELD
- Ventura
- Posts: 621
- Joined: Thu Nov 24, 2011 8:46 pm
- Rides:: '91 C90, '73 ST70 & Z50, '76 TL125, '80 Bultaco 250, '16 Yam XSR900,
- Location: Merseyside
Re: Tuning Tips
Come on then!
Where's the numbers!!?
V.
Where's the numbers!!?
V.
- Alan CF
- Posts: 6761
- Joined: Mon May 09, 2011 6:10 pm
- Rides:: CUB RACING small cc engine rebuilds crank repairs
- Location: CHESTERFIELD
Re: Tuning Tips
Sorry Mr G, I dont want to see a grown man cry, And teams to give up before the race has not even started,
It just wont be fair to give out performance figures that other teams have no way to achieve .
It just wont be fair to give out performance figures that other teams have no way to achieve .