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Discussion Starter · #21 ·
Tony

as far as I'm concerned the RSII has the same gearing as the GSR. When comparing acceleration test it also looks very likely (0-100 and top speed).
If you're interested I've got the Co-Ordsport gearbox/diff overview (all the possible combinations, part. no. etc). I've just sent it to you.

Cheers

Mike
 
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Discussion Starter · #23 ·
Scoobymike, what Co-ordsport call the RS2 box is part no. W5M51-2-X6A3 (X6A7) which features a standard 4.529 final drive, but has shorter 3rd/4th/5th gears (1.444/1.096/
 
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Discussion Starter · #24 ·
Scoobymike, what Co-ordsport call the RS2 box is part no. W5M51-2-X6A3 (X6A7) which features a standard 4.529 final drive, but has shorter 3rd/4th/5th gears (1.444/1.096/0.825 instead of 1.407/1.031/0.761) which gives me the slightly closer spacer I need on the track. Overall top speed won't change much as my rev limit is 8100rpm and will be 9000rpm.
 
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Discussion Starter · #25 ·
Doof, a dog box has straight cut gears, instead of helical cut gears and does not use a syncromesh for engagement, instead using a dog for engagement. This means faster shifting, but more noise and jerky changes - more wear and tear also. A synchromesh ensures a smooth, but slow gear change.
 
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Discussion Starter · #26 ·
ahhh and this is what rally cars have right?, so its the dog box that makes the funky whirring noise. sorry to be completely clueless but you gotta start somewhere eh?
cheers blade,

lewis.
 
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Discussion Starter · #27 ·
All racing cars use the dogbox,I had one fitted to my Caterham when I raced,once you have used one you would never want to return to a standard box.The gearchange is so precise and fast,and the ultimate short shift.The standard box is just not compatible with circuit driving its ok if your driving Fiestas or the like but not in high power cars if you want to be competitive.For track days it is a large investment and really you are only competing against yourself.

BLADE
Have you ever driven a car with a dogbox Tony?,if you have'nt dont because if you do you would want nothing else.

Barry:)
 
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Discussion Starter · #28 ·
Barry, I know what the difference is - but the costs are ridiculous. £7,500|PLS|VAT for the box, and a rebuild every 1000 miles that costs £1,000.

The change on the box is actually extremely good on a circuit, Ed Moore rates it as one of the best boxes he has used. Bear it mind it is totally different with a short shift, solid changer mounts and solid box mounts - very slick, not dog slick, but pretty good never the less.

I just can't justify the money for a dog box. Yes I know you can get other gear kits for around £4000, but you still need the rebuilds. A new standard box costs £1300 |PLS| VAT. Much cheaper!
 
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Discussion Starter · #29 ·
Tony I agree thats why I made the point of the difference between racing and track days,but I managed a whole season without a rebuild,and my car reved to 9500rpm,just lost a pin a couple of times and got a bag full of neutrals when I was too agressive with it.However I didnt have your torque so maybe you would need rebuilds I dont know,you are a better judge than me.The solid mounts etc that you have on your car are they ok for the road?and what short shift do you use please.

Barry:(
 
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Discussion Starter · #30 ·
B and amp;M Shortshift, and the solid mounts just mean alot more noise transfer in the car. My car is actually awesome on the road. I left it on full-hard the other day by mistake, and found it far better than when on full soft (where it sort of felt strange).

Awesome grip and cornering - scares other cars sensless! Doesn't have the suppleness for nasty b road flights, but is great on A-roads and loves roundabouts!

Co-ordsport reckoned their box needing stripping/inspecting every rally (!) and translated that to every 3 open pit trackdays. I don't think there is too much difference between racing and track days for me. Racing means 10 or 20 laps flat out. Open pit track days mean as many as 80 laps - so is harder on the car than racing. I just can't afford something that needs that much effort. All the stuff done to the car so far means that it is far more resilient to track days. Tyres last 3 or 4 days, brake pads the same, which actually means in the long run I have lower running costs (ok, a moot point with the money spent :D)

I would love the dog box, but not the cost of living with it.

Just to get and fit the box is £10k!!! Add £1500 per year. I may as well change the standard box once a year!
Also, I think the problem with my box was the preload issue that everyone is facing, and not anything to do with the torque/power. The box should handle 400-450lb/ft with no problem.

The Gemini dog kit only handles 450NM. The Hewland box I think is ok to about 550NM, but could not get confirmation. Don't know about the new Quaife kit, but bet it isn't much better.

Just to make you laugh - the Xtrac Group A sequential box, with diffs, carbon clutch, prop etc. is a cool £100k from Co-ordsport!!!
 
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Discussion Starter · #31 ·
Tony thanks for that Now I understand,I was doing 2 races at a meet total 20 laps and 15minutes qualifying so nowhere near the amount of laps you are doing,and of course my power was only 195bhp,good power to weight and very quick but no where near the stresses your car endures .The box by the way was a Hewland 5 speed.I dont know what it cost it was on the car when I bought it,£10,000 for a gearbox forget it ,how is that justfied do they only make 1 a year?

Barry:)
 
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Discussion Starter · #32 ·
Barry, LOL!! Co-ordsport have NEVER sold a Ralliart Dog box EVER!!! They sell plenty of the Gemini dog gear kits though...

I was going to be the first :D :D

It is a Hewland gear kit in the standard gearbox casing. homologated for Group N and sold by Ralliart.

It is on Special Offer at £7500|PLS|VAT|EQU|£8,812.50. Add fitting/removal, u r close 2 £10k!!!!
 
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Discussion Starter · #33 ·
R and amp; D Dog box kit £3900 |PLS| VAT ...... strongest box I have used...... should last you 1500|PLS| track miles if you do not LFB.
 
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Discussion Starter · #34 ·
T1000 - that is still silly money! I can use two standard boxes for that money (nearly three actually) and that would easily last 10000 miles on track!
 
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