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Messages - David Lahey

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1
General Discussion / Re: Please identify this hub/wheel ?
« on: June 03, 2019, 07:43:01 PM »
Have a look here at a KT250 front hub

http://www.trials.com.au/forum/viewtopic.php?f=16&t=11959

It's a lot like yours but the KT is 120mm drum diameter and would need the speedo drive part machined off. I thought the designs were similar enough that yours could also be off a Kawasaki

2
General Discussion / Re: Classic Dirt 15
« on: May 06, 2019, 01:58:52 PM »

3
General Discussion / Re: new classic dirt venue report
« on: May 06, 2019, 10:53:35 AM »
Anyone?
Takes a while to get back home Geoff

4
General Discussion / Re: new classic dirt venue report
« on: May 06, 2019, 10:50:54 AM »
I wuz there and enjoyed it. There were some teething issues with the new venue.
Show and shine was well supported. The MX tracks looked very slippery after a shower of rain. I set five novice/clubman trials sections and the people who brought trials bikes along enjoyed themselves. The Vinduro loops were enjoyable and popular. It was good to be able to watch twinshock era MX sidecar outfits being ridden around. The flat track was very small and got chopped up severely after it was ridden wet. People were well-behaved. The catering was good. The showers and toilets were good.

5
General Discussion / Re: Classic Dirt 15
« on: April 29, 2019, 08:06:05 PM »
Ken has asked me to set some trials sections at CD15 and I'll be bringing along some old trials bikes.

I'll set sections to suit what other trials riders want, so here is your chance to get what you like to ride  8) otherwise it will just be what I think is right while wearing my devious section-setter's hat.
Please post up any special requests for the sections and also how about what you are going to bring along.
easy shit - I'm no trials rider, never was and my other handicap is my 75 KT250 -  ;)
Easy shit it is then.
Did you know that a week ago at round 2 of the Queensland Cup (trials comp series) at Stanthorpe, Dungar Pilot  8) won Twinshock Class by a country mile on a KT.
We're even planning to have a green team of three of them at the NSW twinshock trials titles in June - Dungar Pilot, Chippy and Feetupfun

6
General Discussion / Re: Classic Dirt 15
« on: April 29, 2019, 02:51:41 PM »
I've been doing workshop stuff today in preparation and current plans are to bring Godden Majesty, Cota 348 and TY Hotrod

7
General Discussion / Re: Classic Dirt 15
« on: April 26, 2019, 07:41:16 PM »
Ken has asked me to set some trials sections at CD15 and I'll be bringing along some old trials bikes.

I'll set sections to suit what other trials riders want, so here is your chance to get what you like to ride  8) otherwise it will just be what I think is right while wearing my devious section-setter's hat.
Please post up any special requests for the sections and also how about what you are going to bring along.

8
Vintage Track / Re: XT500, de rake? Better turning?
« on: April 02, 2019, 06:27:31 PM »
The limit on how far you slide them up is when something hits something else when the forks compress. It's always a good idea to take the springs out to make sure there is clearance before you go for a ride.
25 mm makes a big difference to the steering.

9
Suzuki / Re: What are these forks off
« on: February 25, 2019, 08:56:57 PM »
What's that thing clamped onto the slider with wires on it?

10
General Discussion / Re: Plastic Guard suppliers
« on: January 21, 2019, 08:38:10 PM »
I've been buying the Preston Petty stuff from the US (Paul Stannard)

11
General Discussion / Re: The Shit They Sell on Ebay
« on: January 10, 2019, 10:54:09 PM »
perch and lever look like original gear from TY175/TY250

12
Yamaha / Re: Yamaha DT1, I have found a whole new interest & respect
« on: January 01, 2019, 11:08:12 AM »
I bought a DT2 in 1977. It was in original condition and had no problems mechanically and looked like it had only been used on the road. I had wanted a bike to ride to work to avoid putting too many kms on my IT175 and for that purpose was a good choice. I did a cosmetic resto on the DT2 and remember being able to walk into my local Yamaha shop and buy a complete new seat for it. I rode it to work for a while and even did some sort of all-day nav run on it (12 hour road trial?) but didn't fall in love with it. The main issue for me was the scary-poor handling in the dirt which in hindsight would have been greatly improved with a 21" front rim and decent tyres. As well as the standard Yamaha exhaust, it came with a Bassani exhaust and a bigger carby? (Sleepy may remember). The pipe gave it more top end power (and noise) but with the standard (fairly high) gearing it was hard to keep it in the fat part of the rev range even on the road.
Sleepy's RT3 (mentioned in a previous post) had been very well developed in the power and handling department at the time and was a far more enjoyable bike to ride than my standard DT2.

13
Tech Talk / Re: Are there any good mods for Yam DT2 forks?
« on: December 27, 2018, 11:49:48 PM »
Cartridge emulators are available. I run Race Tech gold valves in a set of TY250 forks which like the DT2, have 34mm Kayaba fork tubes. The gold valves took ages to get set up but are quite good now.
On another trials bike with TY250 forks I have fitted aftermarket (modern) damper rods made in the UK which worked great without any setting up required. They are made of aluminium, have slightly more travel than standard (about 5mm extra) and most importantly have much better damping action than the standard damper rods provide.
I'm sure either of those methods would also make DT2 forks work better for MX.

14
Tech Talk / Re: Yamaha shift stopper lever trouble
« on: October 08, 2018, 08:11:27 PM »
A picture is worth a thousand words

15
Suzuki / Re: DR500Z Swingarm
« on: September 22, 2018, 09:50:44 AM »
When you do your build, It's a good idea to retain the cush drive hub to prolong the life of the gearbox

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