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F250 Cadwell 12/13 May


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MJ43

 
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F250 Cadwell 12/13 May

Thu May 03, 2007 4:00 pm » Post: #1 » Download Post

Next round of the F250 is nearly upon us Very Happy

Here are a few words I have penned for the programme for those not going to be there - still a few places on the grid

The forecast of a Mexican style heatwave for Mallory’s meeting didn’t happen and riders were greeted by a more characteristic UK day, cold and grey. The weather caught leading Aprilia runner and second in the championship Ross Searle #52 out; Ross nipping his machine in practice with a suspected cold seizure. This put a damper on his day as the machine wouldn’t then run properly - Ross finishing with a DNF and a 4th place. Ross’s position in the championship wasn’t threatened as Mark Jordan having finished 2nd in the first race and then just having taken the lead in the second race, decided to exit Devils Elbow in style - a triple salko with back flip. Whilst providing entertainment for the crowd it didn’t do his championship aspirations much good and scared the hell out of Alan Armour who first had to avoid the tumbling rider and then the sliding machine. Alan was, as usual, the cream of the crop, taking two wins to maintain a 100% record in the championship. Steve Pond and Dan Williams showed good speed – not quite challenging for the lead but with Mark Jordan sidelined and Ross Searle working his way up from the back of the grid these two took second and third places. Another Aprilia rider with problems at Mallory was Iain McDonald – having travelled all the way from Scotland his machine threw a chain in the first race which put him on the back of the grid for the second.

Anyway, enough of Mallory, we are at Cadwell this weekend. This beautiful Lincolnshire circuit is Alan Armour’s home turf and he is going to be the man to beat. Last season Alan was untouchable here and it is difficult to see anybody challenging him. Expect to see Alan #4 (RGV) battling with the 400’s for a win in the F400 as his defence of the Grip and Rip sponsored, F400 championship starts in earnest.

The main F250 battle looks like it will be between Steve Pond #173 (RGV), Dan Williams #174 (NSR), Roy Thorpe #362 (NSR), Ross Searle #52 (RS250), Richard Gordon #177 (RS250) and Iain Mcdonald #39 (RS250). Not sure where I would want to put my money – Roy Thorpe, Dan Williams and Steve Pond have experience on their side, but each is still getting to grips with their individual machines particularly the two Honda riders. Roy is back racing after an 11 year break – he suffered machine problems at Mallory but will hopefully have the gremlins sorted and eliminated here at Cadwell. Dan is riding what is effectively a stock road machine – one of the delectable NSR MC28’s. Outright speed is Dan’s problem at the moment as said he was about 15mph down on Steve Pond’s RGV at Mallory. The three Aprilia riders are capable and have the machines but I do think experience will tell in the end. Somewhere in the mix will be a rather volatile Mark Jordan #96 (KR-1S) – judging by his last few races expect to see him anywhere between a hay bale and the podium – at the moment completely unpredictable.

Behind this group, who are battling for the Division I championship, will be the Division II battle. Presently led by our IoM racer Mark Bamford #109 (RGV) with novices Matthew Graves #95 (RGV), Dino Brady #85 (RGV) and Philip Atkin #178 (RS250) hot on his heels. Alan Grindey # 157 on his KR-1S will be joining in the fun and hoping to steal a few points to add to those he collected at Mallory.
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MJ43

 
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Thu May 03, 2007 4:19 pm » Post: #2 » Download Post

Still a few places left - these are not in Grid order - 38 allowed on the grid

4 'prilias
2 KR's
2 NSR's
5 RGV's
13 so far smile.gif

1 53 CHRIS WATERS LOUTH KAWASAKI ZXR 400
2 37 PAUL ELLERKER EASINGWOLD KAWASAKI ZXR 400
3 86 CHRIS SMITH FILLONGLEY KAWASAKI ZXR 400
4 85 DINO BRADY MORECAMBE SUZUKI RGV 250
5 109 MARK BAMFORD PEEL I.O.M SUZUKI RGV 250
6 41 RUSS BATES DONCASTER KAWASAKI ZXR 400
7 66 RICK OWEN LINCOLN KAWASAKI ZXR 400
8 96 MARK JORDAN STOCKTON KAWASAKI KR1S 250
9 103 PAUL BATTERSBY NORTHAMPTON KAWASAKI ZXR 400
10 76 MATT BROWN WOLVERHAMPTON KAWASAKI ZXR 400
11 157 ALAN GRINDEY KENDAL KAWASAKI KR1S 250
12 4 ALAN ARMOUR HUMBERSTON SUZUKI RGV 250
13 173 STEVE POND TETBURY SUZUKI RGV 250
14 39 IAIN McDONALD EASTKILBRIDE APRILIA RS 250
15 24 STEPHEN CHURCHYARD NORTHWICH KAWASAKI ZXR 400
16 172 TIM BRADLEY SHIPSTON-ON-STOUR HONDA 400
17 95 MATTHEW GRAVES LINCOLN SUZUKI RGV 250
18 52 ROSS SEARLE AYLESBURY APRILIA RS 250
19 75 ANDY CARDEN WEST BRIDGFORD HONDA VFR 400
20 400 DEAN DICKINSON Sc***HORPE YAMAHA FZR 400
21 175 DAVID ALSOP ASHINGTON KAWASAKI ZXR 400
22 128 CHARLIE BURKE DERBY HONDA VFR 400
23 362 ROY THORPE STOCKPORT HONDA NSR 250
24 11 IAIN HOLMES YATE, BRISTOL HONDA CBR400
25 240 ROBERT MACK BARNSLEY YAMAHA FZR 400
26 171 THOMAS FISHER LAMBLEY HONDA VFR 400
27 177 RICHARD GORDON YORK APRILIA RS 250
28 241 DANIEL MACK BARNSLEY YAMAHA FZR 400
29 174 DAN WILLIAMS SUTTON COLDFIELD HONDA NSR 250
30 178 PHILLIP ATKIN JACKSDALE APRILIA RS 250
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geckoracing1

 
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Sick MC28

Mon May 07, 2007 9:32 pm » Post: #3 » Download Post

Unfortunately the NSR flag will have to be waived by Roy alone, as I won't be racing mine at Cadwell. I decided to try to squeeze some extra horses from my motor and took the heads off to have them skimmed. In doing so, I've discovered a 3cm by 5cm patch of nicasil has flaked off one cylinder. I'm amazed it didn't seize at Mallory, I can only assume it flaked off on the last lap and I was just lucky. Anyway, I'm working away all week and I just don't have time to get it rebuilt in time.

Still I'll be at Cadwell to cheer Roy on.... and hoping MJ is fighting fit to do battle again.

Cheers

Dan
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Chester362
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Mon May 07, 2007 9:45 pm » Post: #4 » Download Post

I`m hoping my piston rings, etc turn up at the shop tomorrow too.
Got pretty much everything else I need to get it ready for cadwell.
Thanks Andy & Gixerboy1 (Martin, from the RGV forum)
Fingers crossed!
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Andy
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Re: Sick MC28

Tue May 08, 2007 12:29 am » Post: #5 » Download Post

gekoracing1 wrote:
I decided to try to squeeze some extra horses from my motor and took the heads off to have them skimmed...

Shocked

Is that wise? The NSR doesn't need higher compression to make good power - if anything, we've gone down in compression before with good results.

If you intend on messing with AVGAS, then I suppose there could possibly be something in it, but mine makes mid to high 60's on standard the compression ratio. Even Steve's F3 only runs pump fuel, and that makes over 72rwhp.
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MJ43

 
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Tue May 08, 2007 6:00 am » Post: #6 » Download Post

Got to agree with Andy. All my experiments with high compression were backward steps. Raise the compression you lose overrev and the engine stops like it hits a brick wall. I run about 9.5 ~9.7cc not including plug hole. About 11.5 to the top of the plug hole.

The possibility of Det goes up.

I tried a set of 8.5cc heads gained low to mid, and hit a brick wall at 10,500. No overrev and down a hp at the top.
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StephenRC45
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Tue May 08, 2007 8:03 am » Post: #7 » Download Post

Have to agree as well, NSR's and high compression isn't really the way to go.

Andys runs a fairly low compression and will rev pretty good while making very competitive power.

Mine, I think runs even lower than Andys, though I cant remember now.

We both only use the good stuff when it comes to unleaded.
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Chester362
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Tue May 08, 2007 10:08 pm » Post: #8 » Download Post

Well, rings should turn up at the shop tomorrow supposedly!
Cutting it fine again! Rolling Eyes
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Wed May 09, 2007 6:28 am » Post: #9 » Download Post

Have you decided what was causing it to pick up Roy?
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fontyyy

 
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Wed May 09, 2007 7:03 am » Post: #10 » Download Post

Maybe it's like Tom's and "fixed itself" Wink
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MJ43

 
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Wed May 09, 2007 9:49 am » Post: #11 » Download Post

Peeps sorry to hear about all the problems with the NSRs (he says with a smug grin knowing how reliable ancient KR is - ekk where is there a bit of wood). Hopefully you will all be fixed soon. I can't offer any advice as know very little about NSR beyond saying (and I know this is sounding like a stuck record) but aim for reliability. The RGV/'prillia mob had a torrid 2005 with seizures etc. 2006 they seemed to back off a bit and had a more reliable year.
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Wed May 09, 2007 1:30 pm » Post: #12 » Download Post

We have every faith in Roy. He has the whole weight of the NSR forum behind him, or is that on top of him, for Cadwell
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Chester362
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Wed May 09, 2007 10:28 pm » Post: #13 » Download Post

Well, suprisingly the rings didn`t turn up at the shop again! Rolling Eyes Only had to come from Belgium. Tyga would`ve sent them faster.
Tomorrow, again.

I`ve decided it was the suspect head that caused the seizure. I`ve had an "R" head skimmed to "SP" spec to replace it.
Going to clean the carbs out just in case.
My only back up plan is to fit an old ring to the new piston. (Remember, it`s easy to criticise, John, before you start!).
Piston clearance is good, cylinder height okay. Just need to check squish etc.
Whatever happens with the spares at the local shop, I`m going! If the bits turn up on Friday, I`ll take them with me & fit at the circuit.

I`ve sent entries for all of the remaining rounds now. No going back!
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StephenRC45
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Thu May 10, 2007 6:45 am » Post: #14 » Download Post

Arnt you using the single ring pistons yet Roy?

I'm afraid all Andys rings are locked up in my garage which doesnt help you really. Bit of a drive for you to go and get them and all.
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geckoracing1

 
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Thu May 10, 2007 2:05 pm » Post: #15 » Download Post

OK, may be I won't be skimming the heads then.... thanks for the advise, saves me a job.

Roy, I can take you a spare cylinder and matching piston & rings if you are stuck. Let me know.

See you Saturday.

Dan 07919 303762
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