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Everything posted by forteh
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Got two rings up front, for riding up mountains innit?
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You better keep up with me in September :D
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That looks too much like a bad render from Google sketchup!
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It's a bit too far for me as well :( Don't rely on breakdown cover, I think it took ash almost 10 hours to get home from curby the last time :D
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Ever seen a new race bike broken in slowly? Do they f**k, warm up, thrash hard, drop oil, race Another one from mototune usa
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Once it's warmed up and cooled it's too late though, I bet the bores have already started glazing and you've taken the peaks off the honing Need the best quality mineral oil you can afford, warm up to ensure it isn't going to sieze and then drive it really hard for 5-10 miles, dump the oil and run normally from then on. You might have got away with it but it really needs to be done on first startup of the motor. I used the thrash method to bed in the new piston/bore on the supermoto and whilst it was scary as f**k doing that to 400 quids worth of piston and bore it worked perfectly. 1500 miles later after a tear down there was zero burn past the rings and compression was noticeably higher than previous.
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New rings and no metal in the oil after first run? You need to drive the tits off it for the first 10 miles once it's warmed up otherwise you don't get good ring seal. Unfortunately it's likely you've lost the window of opportunity to get a really good ring/bore seal
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The spokes on my mountainbike are now around 18 years old, have seen a d521, xc717, back to a d521 again and now on my wtb kom, all of the rims so say needed different length spokes and haven't had an issue with switching them round
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What are they made from? Are they machined after fitting? If so then some thought on the maching process might be required. At the end of the day it's a pressure fed journal bearing, the only things to get right are the clearance and alignment from one end of the cam to the other. When the supermoto broke it's crankcases (95ron and 12.5:1 CR aren't compatible!) I was faced with the problem of rebuilding the motor from the ground up. There are very few people who will work on a rotax unit because of the large amount of specialist tools required to do so. I designed and made (or got made) all of the ones I needed to replace the cases (case splitter/alternator flywheel puller/2x cambelt pulley puller/drive gear puller/balance gear puller) and have since used them to rebuild engines for a couple of other people. Do it, wing it if need be, when it fails, work out what went wrong and make it better
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Are they plain bush journals? How hard can it be? Evaluate the problem. Design tooling. Change bushes Set up bush changing scheme Profit ?
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Who's up for it this year? Mike Duff and myself did it last year and personally found it great 35 quid entry fee (plus a quid to british cycling for their admin fee for handling the payment - pah!) for a well planned out, signed and marshalled route. Let's get a TF team there
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Now how tempting is it to spam the email with spurious enquiries? I'm afraid I can't help further, the owa was a shot in the dark
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Is it a microsoft exchange server? Try: - https://mail.domain name.co.uk/owa that is the webmail address for our mail server at work. From there you should be able to use the username and password he gave you.
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Power doesn't matter when weight is so low! Less than 150kg?
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Is it aluminium or iron block? Lots of heat is your friend but then you knew that already. Chances are they would have been thread locked in and you need to break the glue.
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I wouldn't trust very near calipers to measure the bores, get a decent calibrated internal micrometer and check them properly :)
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Milliput is epoxy putty rather than body filler, when mixed correctly is very strong although can be fragile in thin sections; if you reinforce it with some steel wire you can make rediculously strong things. Use the superfine white stuff and you can colour it to any shade by mixing in other things. If you want it a bit more flexible mix it with kneadtite (greenstuff) in varying ratios. I use it for press moulding 40k components, gap filling, sculpting and also to make a magnetic mount for my headtracking rig on the pc
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Casual track time radio usage, are you training to be the next stig?
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3/4AF socket on a 19mm AF bolt? Classic Can't say I've not done the same, just not on a high torque application
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No, it's brakes failed after jardo dismantled and fixed them trackside at curborough last time, ploughed into a renault grand scenic full of schoolkids and killed all involved in a cataclysmic fireball. RIP skincatman™
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I think either Paul or Robin were knocking one up? Could be wrong of course
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Yup keep your inlet tract as small as possible, increases charge velocity (google velocity tuning by motoman if you want an interesting read). The smaller port will help increase useable torque at lower revs, it will eventually throttle the engine when you get to massive numbers though. As long as you're putting a small port back on there then it's all good, still worth port matching if there is much of a step. Use some engineers blue to coat the head side of the joint, put the manifold on and torque it up, remove manifold and see if there is any overlap on the manifold (blue transfer to the manifold larger than the cast ports) and repeat the process with the blue applied to the manifold to check if the head ports are larger than the manifold. Match both sides up if there are any differneces and you will get much, much better gasflow. Simple and can't really go wrong I matched the exhaust ports on the supermoto during one of it's rebuilds and it made a huge difference to the power curve, much more midrange on the arsedyno™, the head ports were about 3mm smaller over the diameter than the exhaust header stubs. That said it's a modernish engine so should be pretty well matched.
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That would properly f**k up your inlet charge! Ok it's FI so not quite as critical as NA but still going to royally screw up any decent hydraulic flow. Is it possible to open up the small ports to large port dimensions? If you have a spare head (incase of f**kups) it's a nice project up in the deepest darkest scotchland to try to learn to gasflow the head
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Wrynose and Hardknott are ridiculous on a supermoto, 400bhp/tonne leads to much fun