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Track day on a GPZ500?

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Gazza M
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PostPosted: 00:27 - 30 Nov 2012    Post subject: Track day on a GPZ500? Reply with quote

I'm thinking of doing a track day next year at some point - my restriction runs out in May 2013 but I can't afford a 'bigger' bike so I'll still be with the GPZ

Has anyone done a track day on one? My thinking is that it may be a litle bit slow compared to the big boys, specially seeing as I've never done one before so will be waay at the back of the slow pack!

Mine's off the road at the moment, sitting in the garage at home because uni won't let me have it up. I need to do a bit of work on it anyways (clean brake calipers and carbs/airbox), so would it better to keep it stock-ish or add some braided lines or any other tweaks?

Also tyres - got a set of BT45s on at the moment, rear is a bit squared off from motorway riding so I'm thiking this may affect handling/make it feel a bit squiffy through the corners.

Thoughts?
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G
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PostPosted: 01:35 - 30 Nov 2012    Post subject: Re: Track day on a GPZ500? Reply with quote

Should be fine with just a service to start with.

Wouldn't worry too much about squared off tyres - might handle a little off, but that sort of 'feel' should be less of an issue on the track - and you'll be using the edges a lot more.

If you get in to, consider what else you might want to do or another bike - but no problem for a few trackdays.
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Gazza M
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PostPosted: 01:49 - 30 Nov 2012    Post subject: Reply with quote

cheers G. I've got a mate who wants to do the same on his SV650, although his is in a bit worse nick than mine as his rear brake isn't even connected :S

In terms of getting there - I can imagine it's gonna be fairly knackering doing one but I'd ride there/back home as I don't have a trailer or anything... shouldn't be too much of a problem?
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stinkwheel
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PostPosted: 01:56 - 30 Nov 2012    Post subject: Reply with quote

I reckon a GPZ500s would be an awesome trackday bike.

After all, people race SV650s and ER6s in proper race series and a fully thrashed GPZ500 will hump an SV. I've embarrased people on bikes that were much faster on paper while riding a GPZ500.

What lets them down badly is the brakes as standard. If you have a twin disc model, prepare to be surprised. If you have a single disc model, I cant recommend fitting a braided brake line and HH sintered pads highly enough. A harrison billet 6-pot of you're made of money but it would probably cost more than the bike these days.

You have a bike that lives in the high rev power-band and that's what makes a race bike. Keep the wire tight and you'll be winning.
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G
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PostPosted: 02:13 - 30 Nov 2012    Post subject: Reply with quote

stinkwheel wrote:
a fully thrashed GPZ500 will hump an SV.

You sure?.. with reasonably competent riders on both?

SVs aren't great, but they aren't that bad either.

People do race GPZs in a 'proper' series too by the way.
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stinkwheel
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PostPosted: 02:45 - 30 Nov 2012    Post subject: Reply with quote

G wrote:

You sure?.. with reasonably competent riders on both?

SVs aren't great, but they aren't that bad either.

People do race GPZs in a 'proper' series too by the way.


As sure as I can be without actually having raced one on a track.

I've roundly humped two people I consider better, more experienced riders than me on a GPZ500s when they were riding SV650s on Highland backroads and one of them was the exact bike that won the straightliners championship outright so it's safe to assume the engine was pretty well sorted.

If no one was trying very hard, the SV had the advantage, it's a faster, more powerful bike after all. Start pushing things and the GPZ got a wail-on in a way the SV couldn't cope with. The SV has 15mph on the top-end but in reality, you never got there. The GPZ could max-out.
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Gazza M
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PostPosted: 03:00 - 30 Nov 2012    Post subject: Reply with quote

stinkwheel wrote:

What lets them down badly is the brakes as standard. If you have a twin disc model, prepare to be surprised. If you have a single disc model, I cant recommend fitting a braided brake line and HH sintered pads highly enough. A harrison billet 6-pot of you're made of money but it would probably cost more than the bike these days.

You have a bike that lives in the high rev power-band and that's what makes a race bike. Keep the wire tight and you'll be winning.


I guess the SV has a pretty flat torque curve being a v twin so the power delivery is fairly linear - in on the gpz there's a nice big kick up the arse at 8k rpm or so, if I keep it up there then the thing will shift pretty sharpish!

and I see where you're coming from with the brakes, they can be fairly crap at the best of times! I'm just on the single disc so I'll probably get some braided lines on when I clean the calipers
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G
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PostPosted: 09:56 - 30 Nov 2012    Post subject: Reply with quote

The SV suspension certainly isn't amazing as standard, but nor is the GPZ from what I've seen (I've got a lot more experience with SVs).

I don't have an explanation for your situation, but I suspect it wasn't related to the bikes specifically based on my experience.
Gearing could have a little to do with it, but I doubt it.

Gazza M - Yes the SV has a very flat feeling power delivery - but a reasonably competent rider would still know that you need to rev it and keep it in the right gear. While it feels flat, as with the vast majority of bikes it does need to be kept near the red line for best results.

Oh and I've lost a supposedly skilled police bike who was trying with me on a stock SV on twisty roads - without (either of us, I presume) using brakes - the police rider did get himself into a bit of a 'situation' early on. (Bikesafe, not being naughty.)
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garth
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PostPosted: 10:13 - 30 Nov 2012    Post subject: Reply with quote

All riders being equal, I'd bet on an SV will be quicker than a GPZ round a track.

Rear brake not being connected isn't a big deal, I've done track days with no rear brake before.
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G
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PostPosted: 10:16 - 30 Nov 2012    Post subject: Reply with quote

garth wrote:

Rear brake not being connected isn't a big deal, I've done track days with no rear brake before.

When my front brake failed, the rear did at least do something - not much admittedly, but something (I was possibly a bit over cautious in it's use as didn't want to lose control.)
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stinkwheel
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PostPosted: 15:35 - 30 Nov 2012    Post subject: Reply with quote

Well.

There's about 5bhp in it.

Of course, an ER6 would be better than either. Especially if you run it with an inlet cam in place of the exhaust one.

In terms of the initial question, the fact we're having this discussion means the answer is yes, a GPZ500 would be fine on a trackday. In fact, it would be great fun.
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I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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arry
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PostPosted: 16:26 - 30 Nov 2012    Post subject: Reply with quote

stinkwheel wrote:
In terms of the initial question, the fact we're having this discussion means the answer is yes, a GPZ500 would be fine on a trackday. In fact, it would be great fun.


pretty chuckable indeed. As you've said already I'd only really be concerned by the brakes.
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Matt B
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PostPosted: 16:56 - 30 Nov 2012    Post subject: Reply with quote

Bike Magazine ran some "Reclaim Our Tracks" trackdays and as it's you first time, and you seem nervous, you may want to look at these.

Some people don't agree with the principle of it but it's your choice. The idea is ride it there and back so no specially prepped, trailered in bikes, tyre warmers etc. I think also there are more novice groups (may be wrong).

Thread here https://www.bikechatforums.com/viewtopic.php?p=2946727

or Club MSV do some Novice only days.

The GPZ will be fine, and fun. Probably easier to throw around than my ZX7R.
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stinkwheel
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PostPosted: 17:26 - 30 Nov 2012    Post subject: Reply with quote

If I was going to do one bit of prep, it would be to make some sort of slider, crash bung or bar to protect the water pump cover on the RHS.

If it goes down at even a moderate speed on the right hand side, that is the first bit to touch down, it WILL wear through, pish coolant all over the track and put an end to your day.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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Red Devil
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PostPosted: 17:32 - 30 Nov 2012    Post subject: Reply with quote

I wouldn’t worry about the back brake for now personally unless it’s an easy fix, I rarely use it anyway (I do need to start using it more though). As G said the tyre should be fine, I was doing decent lap times around brands hatch with a squared off Pirelli super dragon or something like that as it came free with the spare wheels I bought.

When and where are you thinking about doing one?
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Gazza M
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PostPosted: 18:17 - 30 Nov 2012    Post subject: Reply with quote

Red Devil wrote:
I wouldn’t worry about the back brake for now personally unless it’s an easy fix, I rarely use it anyway (I do need to start using it more though). As G said the tyre should be fine, I was doing decent lap times around brands hatch with a squared off Pirelli super dragon or something like that as it came free with the spare wheels I bought.

When and where are you thinking about doing one?


Not quite sure if I'm honest. It'll be sometime march/april most likely, but location is gonna be wherever I can find that I can get to! I'm at uni in Cambridge so can get to somewhere like Snetterton quite easily. Home is Basingstoke so not really sure whats close-ish!

can you tell I'm new to this?
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Past: '07 YBR125, '00 GPZ500S, '99 ZRX1100, '98 CBR600 track bike, '97 ZX9R
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Red Devil
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PostPosted: 18:25 - 30 Nov 2012    Post subject: Reply with quote

Gazza M wrote:
Not quite sure if I'm honest. It'll be sometime march/april most likely, but location is gonna be wherever I can find that I can get to! I'm at uni in Cambridge so can get to somewhere like Snetterton quite easily. Home is Basingstoke so not really sure whats close-ish!

can you tell I'm new to this?


Ah you live in Basingstoke normally? I’m sat in the office in Basingstoke as we speak! I live in Newbury.

Feel free to come along to one I’m heading to and I’ll help you out, the provisional dates I’m heading to are Mallory Park 27th January, Cadwell Park 16th February & Mallory Park again on the 17th. Trying to get plenty of track time on early in the year ahead of my first race season which starts in March!
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G
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PostPosted: 19:44 - 30 Nov 2012    Post subject: Reply with quote

stinkwheel wrote:
Well.

There's about 5bhp in it.

Of course, an ER6 would be better than either. Especially if you run it with an inlet cam in place of the exhaust one.

A quick google suggests it's more like 10-15hp down for the GPZ.

Lots of fairly easy tuning possibilities open for the SV too - including playing with cams.
Once I put the later cam in my curvey model (in the right places), it actually had to be restricted to 72hp (rear wheel on a consistent and not-over-optimistic dyno) for class rules!
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mikelcfc
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PostPosted: 14:03 - 02 Dec 2012    Post subject: Reply with quote

Red Devil wrote:
Gazza M wrote:
Not quite sure if I'm honest. It'll be sometime march/april most likely, but location is gonna be wherever I can find that I can get to! I'm at uni in Cambridge so can get to somewhere like Snetterton quite easily. Home is Basingstoke so not really sure whats close-ish!

can you tell I'm new to this?


Ah you live in Basingstoke normally? I’m sat in the office in Basingstoke as we speak! I live in Newbury.

Feel free to come along to one I’m heading to and I’ll help you out, the provisional dates I’m heading to are Mallory Park 27th January, Cadwell Park 16th February & Mallory Park again on the 17th. Trying to get plenty of track time on early in the year ahead of my first race season which starts in March!


Ive booked on cadwell on feb 16th:) dont have a bike atm though.. jump in the fast group.

As for the GPZ, not bad little bikes all round really.. i would happily chuck one about on a track day..
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Red Devil
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PostPosted: 14:18 - 02 Dec 2012    Post subject: Reply with quote

mikelcfc wrote:
Ive booked on cadwell on feb 16th:) dont have a bike atm though.. jump in the fast group.


Yeah I will do mate, going to be booking after xmas as Im getting some vouchers to cover pre season practise.
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Bomberman
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PostPosted: 14:34 - 03 Dec 2012    Post subject: Re: Track day on a GPZ500? Reply with quote

Gazza M wrote:

Has anyone done a track day on one?

GPZ500s are fun on the track - I took mine round Cadwell on one of MSV's Novice only days. If you do it, remember to take the centre stand off - I ground a fair bit of mine away as I forgot Embarassed
I'm pretty sure they weren't all Novices on mine, unless they had jumped straight in on r6's and GSXRs with track fairings etc. etc. which was a bit annoying. That said, I embarrassed a couple of them on a few laps - really must be galling sitting on a '08 GSXR600 getting overtaken by a battered '94 GPZ Laughing You'll get destroyed on the straights (anyone can straight line fast Razz) so if possible pick a twisty track! Thumbs Up
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UnspeedySam
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PostPosted: 17:17 - 03 Dec 2012    Post subject: Reply with quote

Gazza M wrote:
...my restriction runs out in May 2013...

Gazza M wrote:
It'll be sometime march/april most likely

My fiancée tried to buy me a track day for my birthday but was told by Club MSV and a number of tracks that because I was on a restricted licence they wouldn't let me ride without a race licence. Something to do with insurance.

My restriction runs out in March and I'm very much looking forward to giving the TRX a good thrashing on a track. It's not cosmetically perfect so I wouldn't be too heartbroken if I were to bin a slightly...
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Red Devil
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PostPosted: 17:56 - 03 Dec 2012    Post subject: Reply with quote

beechbone wrote:
My fiancée tried to buy me a track day for my birthday but was told by Club MSV and a number of tracks that because I was on a restricted licence they wouldn't let me ride without a race licence. Something to do with insurance.

My restriction runs out in March and I'm very much looking forward to giving the TRX a good thrashing on a track. It's not cosmetically perfect so I wouldn't be too heartbroken if I were to bin a slightly...


Get yourself on a non MSV track as has been suggested a few times, never even had my licence checked at Mallory Park Laughing
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UnspeedySam
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PostPosted: 19:55 - 03 Dec 2012    Post subject: Reply with quote

Red Devil wrote:
beechbone wrote:
My fiancée tried to buy me a track day for my birthday but was told by Club MSV and a number of tracks that because I was on a restricted licence they wouldn't let me ride without a race licence. Something to do with insurance.

My restriction runs out in March and I'm very much looking forward to giving the TRX a good thrashing on a track. It's not cosmetically perfect so I wouldn't be too heartbroken if I were to bin a slightly...


Get yourself on a non MSV track as has been suggested a few times, never even had my licence checked at Mallory Park Laughing

Wouldn't want to risk paying, turning up and getting sent home. Rather wait until the weather gets decent again anyway!
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Red Devil
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PostPosted: 20:01 - 03 Dec 2012    Post subject: Reply with quote

Fair enough about the weather but it definitely won't matter if isn't MSV Smile
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