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Hey, welcome. I'm just down the road from you in Dorset. Good luck finding your grail cab, I found mine a few months ago and when you find it it makes all the searching worthwhile.

Hey Dan, good to meet you :) Thanks for the link, I had already discovered Jed Margolin's site but hadn't previously looked at the particular page you linked to. There's some useful stuff about the motor and amplifier board on there so thanks again, I will have a proper read through it later.

Well it looks like it must be the brushes in my case, as it's the same with the new pot installed. I ran out of time to look at replacing those at the same time though - did have a quick look but it wasn't obvious how to get inside the motor as it looked like the inspection panel was held in...

Well I changed the pot at the weekend and it made no difference, so I guess the problem in my case must be the brushes. If you have trouble finding the right pot I can send you the one I took out of my game, as there's obviously nothing wrong with it. All I would ask is that you pay the postage...

Ah, so those are the brushes. Not so OT after all then. I guess there's no harm in me installing the 2 new looking ones while I've got the steering assembly out then - hopefully between replacing those and the pot it will sort out the twitchy steering.

Yep it's a 10 turn pot. I would have thought it should be centred too, but in the manual it says to turn it all the way anti-clockwise, then turn it clockwise just a little (15 degrees), so who knows... :D The bit I find a bit confusing is, once you've installed the new pot, it says to check...

Right, I finally had a chance over the weekend to remove the dash/steering assembly (holy cr@p it was heavy, mostly due to the that hoofing great FF motor I guess). Now I know what the pot looks like, I checked the bag of spares that were tucked away in the back of my cab and there are two...

Yep, it's a cockpit version. I had no idea that meant no optos. After looking at the steering fault-finding flowchart in the manual I did try a square wave test, but wasn't really sure what I was meant to be looking for. I remember the steering didn't twitch at all though. Anyway I'll try the...

Thanks for the replies guys, what you said about the steering pot makes sense when you put it like that. I think I have a spare pot that came with the game, no idea if it's for the steering but I'll have a look at the weekend.

My Hard Drivin' has developed an annoying little issue with its steering - when playing the game (or when it's running in attract mode), the steering wheel constantly twitches, like the FF motors are pulsing slightly. It's not a huge issue at the moment, but it's gradually getting worse and will...

Well I fixed the brake pedal. It wasn't the strain gauge after all (phew), and only took half an hour in end, with no new parts needed. I removed the clutch/brake pedal assembly today and cleaned it up first, as it was quite badly clogged with dust which made it hard to see what was what. Then...

Hey, I recognise that username from ukvac & dlf :) (I'm dannyboy on those sites). Like hatrick I've been following your resto with interest too, and am trying to gradually restore my HD cockpit, although my technical skills are limited. I'm sure I tried RS UK but couldn't see any T02/Z02's...

Yeah mine had the manuals in there too, plus a few spare parts (pots, springs and a cable) which I guess the original op left in there. Spare parts are always useful, but at the same time it's kinda worrying as I'm not sure if they should've been fitted! Doh, I feel stupid now. I was thinking...

Wow, maybe mine isn't so bad after all. That's a LOT of dust :D I put mine back together earlier and all seems good, the new zrams are working fine. One funny thing I didn't realise though, is you can't set the clock past 1999. I guess the Y2K bug would kick in..... I hadn't even noticed that...

Got the chips yesterday - I went for the timekeeper in the end as there was a minimum order charge from the company I used (Farnell), but they were still cheaper than Mouser in the UK. Removing the PCB and the two ZRAM chips was surprisingly easy, I thought it was gonna be more difficult than...

That's a relief. I'm sure mine must be socketed too as I can't think why they'd be different, so I'm likely just looking in the wrong place. I'm going to remove the main PCB's later so will have a better look then. Sorry, one more question on the timekeeper ram chips too. Just to be clear, is...

Yeah it saddens me when I see kids slating HD/RD when they've only played it on a console or 8-bit computer. It has to be the real thing with a game like this, nothing else comes close :)

Thanks. I guess I'll do the same and get one of each then. I looked at the PCB last night, it looks like none of the chips are socketed so I guess it's a desoldering job to remove the two in question? Yeah I was reading about the brake in the manual, the strain gauge sounds like a nightmare. It...

Hi guys I recently found myself a Hard Drivin' cockpit after much searching (not many of them left in the UK). There are a couple of problems with it that I'd like to get sorted out though: 1) The zeropower and timekeeper SRAM chips are dead. I read Jed Margolin's procedure for replacing the...

Hi all I've been trying to buy a Race (or Hard) Drivin cabinet for a while now, but not having much luck. I know they come up quite often in the US, but I'm based in the UK and the shipping costs are just way too much to get anything that bulky over to England. I wondered if there's anyone in...