Technical discussion

body clips

feeds@yuku.com (BENFRANCE) — Tue, 17 Nov 2009 12:03:05 GMT

Hi from france!

since i got my radical sr3 1500 (2003) i have lots of problems with the body clips, especially on the engine body work, the body clips continually open during racing, actually i strap them with big 3M scotch...
Someone have a tip to keep them close without strap them (pic welcome)

Penske shocks for Clubsport

feeds@yuku.com (Dynotech) — Sun, 25 Oct 2009 20:58:41 GMT

Hi Guys.Looking for bit of advice if possible.I have upgraded my early #003 (1997) Clubsport to The Hayabusa K9 engine which is great with all the extra power and torque
(168rwhp 98ft/lb torque at the wheels).I am running 10" rears and 7.5"fronts on Kumho F3 tyres but am having lots of traction problems.The car only runs a basic Avo single adjustable
shock with 350 front and 450 rear springs.I have read Jakes and various other posts with interest and think Penske would be...

Tires and Brakes

feeds@yuku.com (Feffman) — Mon, 21 Sep 2009 03:14:49 GMT

Good Day All:

Just had Avon tires from Firsby Tire (www.FrisbyRaceTire.com) mounted for the SR3 and swapped in new CarboTech (www.CTBrakes.com) XP8 brake pads. I'm interested to see how they compare to the Dunlops and stock Radical brake pads that have been on the car. As soon as we are back from The Glen, I'll let you know.

Feff

Turbo Radicals

feeds@yuku.com (DaveKern) — Sat, 05 Sep 2009 15:03:09 GMT

Hi all,

I've been reading up quite a bit on this forum and the DSR forum over the last couple of weeks, as I'm considering picking up a used sportsracer for an interesting project. First off I figue a little bit on my background, and then I'll get into the questions.

I started off doing auto-x and rally-x about 9 years ago, and after a couple seasons really found my interest to be sliding around in the dirt. Living in Colorado, a progression into hillclimbing...

New SR3

feeds@yuku.com (geeman14) — Sat, 08 Aug 2009 21:54:44 GMT

I have been lurking on this list for a bit as I contemplated my purchase and I am pleased to say I am the proud owner of a 2009 SR3.

I had the car out for two days and it worked very well. I am still dialing it in, getting the AIM logger set up, etc... Overall I am very happy - esp with the changes Radical made for 2009.

I had a question that I was hoping to get some feedback on. I know it is a track car, but I can't help but feel the need to put some sort of clear...

Carbs to Manifold and Air Box

feeds@yuku.com (Feffman) — Wed, 05 Aug 2009 11:14:55 GMT

Good Day All:

Are supposed to be circlips that hold the airbox to the rubber tubes on an SR3 with carbs? Or does the airbox get held on in the detents on the tube?

Feff

Any SR4's in the Southeast US?

feeds@yuku.com (frankrizzo) — Sun, 02 Aug 2009 08:48:04 GMT

Specifically in, or around, Alabama? I'm a big guy (6'3" 275), and I'd like to know if I would be comfortable in an SR4. So, if you have one, and wouldn't mind allowing me to sit in it. (Time and location of your choice of course). Please let me know! Thanks

Dyno Day 2009 - Take 2

feeds@yuku.com (Matt Graham) — Fri, 17 Jul 2009 18:55:25 GMT

So about 3 weeks ago I was at the track, and found that I suddenly had a 1-speed gearbox.. Turns out one of the gears had lunched itself, and the resulting shrapnel necessitated a complete rebuild of the motor. So in went the 'spare' motor. 4 of us SR3 owners here in Ottawa have split the cost of a spare motor, and we decided we'd build a 1400 to have as a spare on the shelf. As a result I find myself with a stock 1400cc Busa with 13:1 compression pistons, big rods, and...

Clutch Slave Cylinder

feeds@yuku.com (GTRBOY1) — Sat, 27 Jun 2009 05:12:49 GMT

Can someone please help me with identifiying this clutch slave cylinder I'm using. I was told it is a powertec unit from an SR3, but I don't want to order one if it isn't right.

Neil.

SR3 Engine and Tranny Removal?

feeds@yuku.com (Feffman) — Sat, 23 May 2009 18:38:23 GMT

OK did a search but no luck. Engine and tranny need to come out. Any instructions or a manual to follow? It looks fairly straight forward, but I'm a bit intimidated by the process without something to follow. Most notably how the tranny comes out (How do the 1/2 shafts to the wheels de-tach?). If anyone has a manual of any sort, I'll pay to have the pages faxed to me. Please feel free to call me at (314) 249-3770 or e-mail me directly at Feffman@MVPTrackTime.com. Thanks!
...

Where's 6th Gear?

feeds@yuku.com (Feffman) — Fri, 22 May 2009 00:17:49 GMT

Good Morning Everyone (Insomnia Today!):

I hope everyone is doing well. Great Spring weather in the Gateway City (St. Louis) recently.

We seem to be unable to grab 6th gear on the track in our 2003 SR3. Is there an adjustment to the linkage to correct this or is there just a VERY small difference in the ratios and we just don't realize it? Feeling stupid!

Feff

Electric reverse ?

feeds@yuku.com (pigiron) — Fri, 01 May 2009 07:49:07 GMT

Prosport 2001 hayabusa.

Can anyone explain in detail exactly how the reverse system works.

I realise the balls are supposed to run up the two ramps and then engage with the sprocket lugs.

Whwn I press the button the motor runs in the correct direction but the outer collar with the two ramps machined on it rotates at the same speed and direction as the inner shaft so there is no way of the balls engaging.

Mine has never worked so I have no past experiemnce...

Gear Oil....

feeds@yuku.com (GuildBuilder) — Mon, 27 Apr 2009 22:55:44 GMT

Up until now I've been using Silkolene Silktran Syn 5 in my gearbox of the SR3. It seems to be harder and harder to find these days. Does anyone have a good stateside supplier or perhaps a good alternative gear oil. Thanks in advance - Scott

SR3 Front Splitter

feeds@yuku.com (Feffman) — Wed, 22 Apr 2009 04:02:56 GMT

Our front splitter met an untimely demise this weekend after an introduction to curbing with gator teeth. Has anyone used the ATG front splitter with or without the side winglets? ATG noted using the splitter side winglets on high down force tracks and removing them for faster tracks like Road America. Thoughts or experience? A inquiring (possibly feeble ) mind needs to know.

Feff

Fuel Cell degredation

feeds@yuku.com (NASA racer) — Fri, 10 Apr 2009 08:42:27 GMT

So before I sold my Radical, the next thing I was going to do was replace the fuel cell. I was careful to inspect it yearly and it was in good shape but as 9 years rolled around, I thought that would be a good replacement.

But I sold the car before that was done. When Stephen got my car, he noticed fuel LEAKING when he was loading/unloading it from his trailer. We discussed this and I thought it was either the overflow valve or possibly one of my gaskets leaking. It seems to me...

The start of the season...

feeds@yuku.com (Matt Graham) — Sat, 14 Mar 2009 08:33:20 GMT

... did NOT go well for me this year.

I decided to tow down to VIR for a PCA Driver's Ed event to do some pre-season testing, and shake down the new motor in the SR3. On the first lap of my second session, the car snap spun in a high speed section (uphill esses) and I backed it into the wall. F*(&!!!! Either too fast on cold tires, or something broke. Nothing obvious, other than WAY too much toe IN on the right rear, but that may have been the result of the impact....

Dyno Day 2009 - Canuck Version

feeds@yuku.com (Matt Graham) — Sat, 07 Mar 2009 05:10:26 GMT

After a winter up working on the car, and getting the engine rebuilt at WeTune in Montreal, I went to the dyno yesterday here in Ottawa to break in and tune the motor. I broke it in (various RPM, various gears) for about 30 minutes and then started making power pulls.

First pull netted about 150hp and low 90s torque. We did about 10-12 pulls at WOT, and ended up with a decently flat torque curve, a perfectly flat A/F ratio (at 12.5:1) . The final pull netted 162hp and about...

SR3 Diffuser Options

feeds@yuku.com (Feffman) — Sat, 21 Feb 2009 16:25:14 GMT

Hi All:

Well it lives after a Winter up on jack stands for repairs and updates. H2O pump is done, shoulder harness mounting points moved for the Hans and various other details.

The rear diffuser (high downforce) is ground down in a few spots and needs repairing/replacing. I'm in contact with Aerodine Composites in Indy to determine if they can repair it. If that's not cost effective, then we buy new. Has anyone looked into having an aluminum diffuser...

Centre Lock Wheel Nut Removal

feeds@yuku.com (GTRBOY1) — Tue, 17 Feb 2009 00:37:09 GMT

This is a very frustrating problem that almost everybody has suffered from, so I thought I would post what I have learnt.

All was going well for me using my nitrogen bottle and a 3/4 rattle gun, but that only worked for so long.
I tried the 3/4 breaker bar plus 3 foot extension, someone sitting on the front wheel, me on the brakes and two guys jumping on the bar, it worked eventually.
I was cleaning the threads,lubing them with copper grease but it happened again...

SR3 wheel speed sensor

feeds@yuku.com (wetune) — Mon, 16 Feb 2009 13:23:32 GMT

Hi everyone.
Does anybody know which wire is the input, power and ground on the factory speed sensor plug? I don't have the Radical dash wired up so I can't plug it in to check.
Thanks in advance
-Andrew