Truenotch

Not so much.

Holy moly what a huge weekend that was! Thanks to J5 for the hospitality and putting it all together. Can we do it again now?! Surprisingly, my wee MX survived really well!

If you point at Wainui Rd it'll be really close. Maybe PM @johnnyfive for the actual address incase he doesn't want to publish it here.

I also have a couple of spares. Size L I think.

That was a good hoon! I drained my tank when I got home and there was 200ml left. Including the drive home from @Geophy's place would have been about 90km all up from the 4.5L tank. Whaka yeah, plenty of range with my extra 5L on the back .

Updated. Day 1 is looking super safe for fuel stops . Day 1: 22km - Taneatua 14km - Z Awakeri 49km Kopuriki 17km - Murupara (slight detour) 66km from Kopuriki OR 49km from Murupara - Ruatahuna 48km - Waikaremoana Holiday Park (their website says they have fuel, google doesn't list it. Can this be confirmed? Day 2: 155km - Gisborne (I can't find anything along the route) Day 3: 38km - Te Karaka 40km - Matawai (detour) 119km from Te Karaka OR 70km from Matawai - Tirohanga 7km - Opotiki 36km - Finish

I've also got one extra bed booked at Waikaremoana ($35) and another space available in the cabin (not booked yet). If anyone needs a bed, let me know.

I've just mapped out all the fuel stations along the route. I've bolded and underlined the big stretches. I'd say 2 will be a problem for many of us - 155km is a big stretch! Also @johnnyfive - can you confirm that there's fuel at Waikaremoana holiday park? Their website says yes, but google doesn't list any fuel stations around there. Day 1: 22km - Taneatua 14km - Z Awakeri 49km Kopuriki 17km - Murupara (slight detour) 66km from Kopuriki OR 49km from Murupara - Ruatahuna 48km - Waikaremoana Holiday Park (their website says they have fuel, google doesn't list it. Can this be confirmed? Day 2: 155km - Gisborne (I can't find anything along the route) Alternative: 55km - Frasertown - 55km detour (about the same length as the current route) rejoin with main route at Te Reinga Falls. 95km - Gisborne Day 3: 38km - Te Karaka 40km - Matawai (detour) 119km from Te Karaka OR 70km from Matawai - Tirohanga 7km - Opotiki 36km - Finish

New sprockets are fitted and I’ve had some successful testing . Glad I didn’t gear it up any further because it’s only just able to pull 5th gear at the moment. You’ve got to hang on to 4th for quite a while and then bang into 5th at 80k or so. It’ll cruise on the flat at 85-90 and I’ve seen 96kph on the gps with a bit of a downhill run. Popped the “good” cylinder back on and took it for a hoon out to @Archetype‘s place for a few laps of his paddock. It’s fun on the gravel and grass! It died on the way home and I was shitting myself thinking it had seized. Turns out it had run out of fuel, so I flicked to reserve and powered on. Unfortunately I didn’t reset my odo after fueling up, but I think I got around 60km from the 4.5l tank. Hopefully a spare 5L will give me enough range for Te Urewera.

B7 Yuss! But damn, it could have been a YSR plate . Sounds like a perilous machine. Can’t wait to see it in action.

So... did you get a sweet plate number?

Thread updated. THIS MONTH WE'RE CRUISING TO RAGLAN This month we're cuising TO RAGLAN for fish and chips on the wharf. Get your old cars, utes, bikes etc out of the shed! December 12, 2109 - Meet at 6PM and be ready to roll out by 6:30pmNEW MEETING SPOT - meet at Westside Classics Waikato clubrooms located behind the Backyard Bar and Eatery 1333 Horotiu Road, Whatawhata. Park in the big gravel carpark behind the cafe. NEW RAGLAN LOCATION - This year we will be cruising to the Papahua / Kopua Domain in Raglan. Search the location of Jo's Takeaways on google if you get lost .

@Beaver @mark105 @Geophy @Archetype @Yowzer @Zeubin @macabre @bobby1930 @vk327 We're pushing this back a couple of weeks. We'll do a Raglan run on December 12th.

Woohoo! Welcome to the cave of small bikes. You might never escape.

I reckon 3 support vehicles will be good. F150 sounds like it would make a sweet ambulance too.

Gave the carb a good clean with @Geophy's ultrasonic cleaner today. Blew out all the jets and passages and re-assembled it with the standard 17.5 pilot jet. Whacked it all back together and the hang + pipe bangs were exactly the same. Then I wound the idle screw out as far as I could so it wouldn't idle and it sounds good: Maybe the pipe bangs are a normal characteristic for these motors when the idle is cranked up a bit? Took it for a hoon and adjusted the mixture screw a bit. It goes really well! I might have been chasing a red herring by looking for a lean issue with the carb, but at least now I know it has a very clean carb, new crank seals, correct oiling (premix). Next job is to gear it up .

@Beaver @mark105 @Geophy @Archetype @Yowzer @Zeubin @macabre @bobby1930 @vk327 You guys keen for caffeine and gasoline, or shall we do the Raglan run again?

@peteretep - it’s a little pump that runs off the primary reduction gear / main clutch gear and it’s operated by the throttle via a split cable. As you wind the throttle on it opens the pump more and you can set the min/max position of the pump. The pumps can wear our and get weak, which I suspect has happened here. I’ll probably rebuild it later on for ease of use. I tested mine by pulling the hose off and idling the bike with the pump turned to max and it gave a dribble so I figured it was good. The proper way is to set the RPM and measure how much comes out (which I didn’t do because no tacho).

I’ve got a 17.5 from my spare carb if you want to have a play?

Fuel can, panini storage, tank bag and hypercolour handlebar bag fitted. The rack is from the FS1: I’ll need a backpack for undies and Brian Lowns too.

Forgot to add: Current sprockets are 14/48 (3.429:1) Desired sprockets are: 14/39 (2.786:1) 18.75% increase in gearing and means I might actually use the lower gears on the open road.

I've been chasing the cause of the seize since last weekend and have done a couple of things. The bike acts lean on the overrun, which is usually caused by a vacuum leak or a lean pilot circuit in the carb, so I've been through a few things in search of the lean hang. Replaced both crank seals - no change Set float level in the carb - no change Changed the reeds over (they weren't seating completely flat on the block) Changed 17.5 pilot jet to a 30 from another carb - it's now very rich up to 1/4 throttle, but still hangs and pops on the overrun Refitted air box properly (it was loose when it seized and could have been leaning the mixture) - still hangs Disconnected the oil pump and changed to premix I highly recommend Blackwood Yamaha in Cambridge for Yamaha parts. They were super quick to respond to my queries and I had my crank seals on the same day. Their prices are reasonable too. I took it for a hoon yesterday after work and it didn't seize, so that's a bonus. I'm using the old rattly cylinder for testing so I don't have to care if it seizes again. It went pretty well and cruised happily enough at 70-75k, but felt like I was wringing its neck at 80+. When it seized last weekend, I was doing 85kph, so I must have been pulling a few revs! It's hard to find information about the MX100, but the specs I've found online for the older DT100s say that the max power RPM is 7500 (pre 1980 DT100s have the same engine but with points instead of CDI). I did a few calculations to see what revs I was pulling at 85kph: (Black is standard gearing, red is my new planned sprocket size) At 85kph I would have been doing around 8300rpm! This is probably a bit hard on an old engine that's only designed for 7500-8000 max. The red numbers in the table show the RPM for the rear sprocket I want to fit - this will sit me at about 6700 at 85kph which is a much more manageable number! It will also allow me to wind it out to higher speeds when I need to. Here's a link to the wheel speed/RPM calculator I used: http://woodsware.aciwebs.com/gears/ I'm not convinced that the problem is fixed yet, but it's looking promising. I'll head to @Geophy's place on Sunday to use his ultrasonic cleaner to make sure the pilot circuit is nice and clean. Here's my list of what might have been the problem: Lack of lubrication resulting in high cylinder temps (trusting the original oil pump) Too many RPMs Air box boot not fitted properly - LEAN Partially blocked pilot circuit - LEAN Piston to cylinder clearance too tight on new cylinder Ring gap not set correctly All of the above I'll get the new cylinder back onto it and will go for another hoon and see what happens. It's under 2 weeks until the big ride, so the pressure is on!

Are these the springs you're using? Their website says they are progressive to soak up bumps etc, which might mean that you'll get extra droop when compared to a linear 4.7kg/mm spring. https://shop.battlegarage-rs.com/products/bgrs-x-swift-ae86-springs-rear-coilover-type