IOM Pre-TT Classic Races 2025

Andy J

Hero member
Location
Isle of Man
Right on cue at 5pm today, as I set off from the workshop to head to the race paddock at Castletown, the first spots of rain started hitting my windscreen, after umpteen week’s of almost unbroken sunshine....😡
As it was, the event was already off to a bad start as I was down to one bike and I had to buy yet another new helmet to meet the latest ACU directive that only FIM approved helmets are eligible for road events, regardless of whether the helmet has an ACU Gold Label etc. 🤬
Unfortunately, after close inspection, following several minutes of stationary running of the engine of the 840, it was clear that the issue was not blocked breathers or leaky oil seals but a leak from the crankcase joint to the rear of the lay shaft seal, which when it had spayed around a bit had given the impression it was a seal issue. Even a retightening of the crankcase bolts didn't have any noticeable reduction in oil flow, so a decision was reluctantly made to park the bike and concentrate on the 650 for the junior super bike race. ☹️
By the time I arrived at Castletown the spots had turned into a steady drizzle with bouts of slightly heavier rainfall from time-to-time. It also became fairly dull and was verging on being pretty dark by the time the last practice took place.
Scrutineering was a breeze compared to last year, others than rain dripping off the roof of the scrutineering tent onto my head. It was then a case of hanging around in the light rain for 15-20 mins to wait for the first qualifying session. I noted that at least half of my fellow competitors had switched to full wets, but I had to make do with my road tyres. I’ve got a set of wets, but as they’re more than 3 years old they can’t be used..😡
Anyway, I made the most of a bad situation and completed 3 laps of a very wet circuit, and generally was losing out on coming out of corners and on the straights rather then in through the twisty bits or breaking zones. I also had some misting issues with my visor, which didn’t help, and couple slides on a dodgy road joint near stadium corner. However, I wasn't the slowest rider out there but still probably a lot slower than I really need to be to stand a chance of qualifying for the race tomorrow.
There is one more qualifying session, tomorrow afternoon, that looks as though it might be dry, but the weather forecast for tomorrow evening, when the race is due to run, is not looking good.☹️
 

Attachments

  • CFB59E09-0164-4231-B8DA-0812237DA6F3.jpeg
    CFB59E09-0164-4231-B8DA-0812237DA6F3.jpeg
    151.3 KB · Views: 43
  • 57B9A82C-8F3D-49BF-9D3F-D50E19BE3D41.jpeg
    57B9A82C-8F3D-49BF-9D3F-D50E19BE3D41.jpeg
    115.2 KB · Views: 43
Bummer about the weather, Andy. Not much you can do on road tyres up against riders on full wets. I had a leak from that general area and tried a couple of different things before closer inspection indicated it was oil escaping from between the 5th gear output shaft and bearing/spacer (pic). I cleaned and dried the interface behind the sprocket and filled it with silicone.

Mainshaft output leak.jpg
 
Bummer about the weather, Andy. Not much you can do on road tyres up against riders on full wets. I had a leak from that general area and tried a couple of different things before closer inspection indicated it was oil escaping from between the 5th gear output shaft and bearing/spacer (pic). I cleaned and dried the interface behind the sprocket and filled it with silicone.

View attachment 96771
Make a plumba out of you yet…….😝
 
I did momentarily consider trying to do a temporary sealing job, but the thought of it failing and getting oil on the back tyre on wet roads on a street circuit just wasn’t a sensible idea.
 
if it realy is the crankcase joint, then loosen the bolts, liberally rub a bar of soap, Lifeboy is good, but Imperial Leather, of Dove works just as well, into the joint and retighten, you will be surprised, Tom did this on a Cagiva Navigator, (suzuki V twin engine) that got accidentally bumped on a hidden curb in long grass of a foreign petrol station (he was short cutting) and was told this trick by a local old lag, farmer type, and it worked, never did do any more and two years later prior to sale it was still sound, and smelled lovely!
CLEM
I am serious Andy this worked!
 
if it realy is the crankcase joint, then loosen the bolts, liberally rub a bar of soap, Lifeboy is good, but Imperial Leather, of Dove works just as well, into the joint and retighten, you will be surprised, Tom did this on a Cagiva Navigator, (suzuki V twin engine) that got accidentally bumped on a hidden curb in long grass of a foreign petrol station (he was short cutting) and was told this trick by a local old lag, farmer type, and it worked, never did do any more and two years later prior to sale it was still sound, and smelled lovely!
CLEM
I am serious Andy this worked!
I've done the same to fix a leaking fuel tank.
Soap rubbed into leaking fuel tank hole (this case was rust) then tap over with 'Gaffer' tape to protect soap.
Soap goes gooey and then hardens.
In the Outback of Oz you do what you can.
 
if it realy is the crankcase joint, then loosen the bolts, liberally rub a bar of soap, Lifeboy is good, but Imperial Leather, of Dove works just as well, into the joint and retighten, you will be surprised, Tom did this on a Cagiva Navigator, (suzuki V twin engine) that got accidentally bumped on a hidden curb in long grass of a foreign petrol station (he was short cutting) and was told this trick by a local old lag, farmer type, and it worked, never did do any more and two years later prior to sale it was still sound, and smelled lovely!
CLEM
I am serious Andy this worked!
Okay thanks Clem, I will discuss with my Viking mechanic friends who are about to set to and remove the engine.
 
So a fairly disappointing end to the racing, not just for me but quite a few other riders who had their racing curtailed or interrupted by the wet weather.
Saturday’s second qualifying was held in dry weather but on a course with numerous damp patches, several being on the racing line/bends. Although I improved my lap time by over 30 seconds from Friday’s wet practice, obviously all the fast guys improved their times too, still leaving me 20 seconds off the qualifying time. Even if I had repeated my best dry race lap time from last year, I would still have been 10 seconds shy of the QT. However, I was sort of satisfied I was 4 seconds quicker than I was in similar conditions in first qualifying last year and only 2 seconds off the best dry lap qualifying lap. Given the top speed of my standard road bike, with just the lights removed and a ‘race’ set of Kevlar bodywork, is probably 25-35mph slower than the race kitted 600 fours, on a circuit with long high speed sections, then it’s not really surprising. If I had been willing to take more risks through the fast bendy bits with the damp patches, then maybe I could have qualified. I could also have ended up on my arse and into a wall, so I backed off and will try again next year, but not with the 650, which just isn’t competitive. Baines gave up trying to race the 750 Formula against the Honda and Yamaha 600 fours, so the 650/668 is going to be even less competitive. The intention was as much about having a Laverda racing at the event and that was achieved; and in the Creek Inn in Peel last night a bunch of Germans were talking about a Laverda being raced not realising I had been the rider.
And as a footnote, we went and watched the races I was entered in on Saturday evening and got absolutely soaked to the skin, so it wouldn’t have been much fun circulating in those type of conditions, although I would have gone out to help put on a show for the few hardy spectators and long suffering marshals.
 
Back
Top