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Post by nickj on Jun 3, 2015 21:07:30 GMT
No arrow, just an A stamped on the piston above the side with the opening in the skirt...will post some pics
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Post by nickj on Jun 3, 2015 21:15:32 GMT
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Post by tzsteve on Jun 3, 2015 21:19:15 GMT
tab washers?
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Post by nickj on Jun 3, 2015 21:20:50 GMT
Need some advice on flywheel. I had dozily assumed I could start with a bog standard ETS flywheel but clearly that won't work. Is it vespatronic time or are there any flywheels that will work with a normal 12v set up
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Post by nickj on Jun 3, 2015 21:22:32 GMT
Yeah sorry, well spotted....should have said I've just put things together to check fit. Not torqued up or anything yet....washers and all
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Post by tzsteve on Jun 3, 2015 21:23:09 GMT
the kit says vespatronic. i`m still trying something else and waiting for my case to come back from the milling machine.
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Post by tzsteve on Jun 3, 2015 21:24:03 GMT
a test fit is always a good idea.
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Post by nick121170 on Jun 4, 2015 0:28:04 GMT
vespatronic on mine expensive but worth it nice work , looks the bollox
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Post by nickj on Jun 6, 2015 15:36:13 GMT
cheers steve - thats where I have it
mmmmm....now how easily should you be able to turn a crank with new seals and the primary cog/clutch basket on....? with the nut on the flywheel side on I can just about turn it over, if I push the basket round then its smooth but needs a bit of pressure. This is the first time I've used a fixed bearing on each side - usually I've used a roller on the flywheel side. I pulled the crank into the flywheel side with a puller and then finished the seating on the primary side by fitting the primary cog after getting it almost all in by hand with the crank frozen. I'm assuming there is a little bit of lateral tension in there but will that settle out once its running in?
Also checked squish - currently 0.5mm with a 0.3mm gasket which is too tight so need to get a thicker gasket in there. Aiming for 1mm yeah? Will check timings before going for head or base...
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Post by tzsteve on Jun 6, 2015 17:16:46 GMT
it turns easily with the flywheel fitted. it`s a bugger to turn without a bit of mass on the crank. you are compressing the air under the piston thats what the resistance is. its a good sign as it shows you aint losing air past the seals and rings
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Post by henri on Jun 6, 2015 19:01:41 GMT
1st thing , is it just me but does that barrel look "sexy" sittin there all ready to rip , to anybody else , as an aside ,what are ya feedin that fat mouse on, steroids , looks like it could give my local cats a run for there money , would def choke my missus's snake , an with new seals/bearings/etc , it will be slightly tight to turn , so long as theres no really tight spots an its a even amount of effort to turn it full circle ya good to go an torque up , H
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Post by nickj on Jun 8, 2015 22:57:37 GMT
Fat mouse is my daughter gerbils....greedy buggers...they eat everything they can, food, wood, plastic. One of these days they are going to pop
Yeah cylinder looks really nice. Enjoying putting it all together carefully and taking my time for once
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Post by nickj on Jun 10, 2015 19:02:03 GMT
anyone know if a HP4 flywheel would fit with the cylinder without having to cut anything off the cylinder - it look like its got quite a plain back but not sure of the diameter of the rear projection...anyone got one they can measure for me?
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Post by Tiberius on Jun 10, 2015 21:05:29 GMT
No but I'd advise against using a HP flywheel unless it's genuine Piaggio from the 90's. The remade stuff is just truly awful.
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Post by madmax on Jun 10, 2015 21:36:23 GMT
No but I'd advise against using a HP flywheel unless it's genuine Piaggio from the 90's. The remade stuff is just truly awful. and they tend to disintegrate!
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Post by nickj on Jun 14, 2015 22:27:35 GMT
Thanks guys for that steer. Will go with the vespatronic.
Checked the timings on the barrel, at the moment with 0.3mm gasket I get Exhaust 184 deg Transfers 128 deg
The inlet is currently 164 deg with the stock ETS crank. Think I will open up the inlet a bit but not keen on getting the crank split to alter it...
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Post by nickj on Jun 14, 2015 22:28:45 GMT
I should have added the squish is a bit tight at 0.5mm!! So will need to lift the barrell a tad...
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Post by GeorgeS on Jun 15, 2015 6:47:07 GMT
That will raise your port timings of course.
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Post by nickj on Jun 15, 2015 16:32:51 GMT
Yes of course. Just got some 1mm ali sheet. Tonight's task is to make a gasket and recheck
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Post by nickj on Jun 16, 2015 22:37:42 GMT
Added a 1mm packer and re measured squish with it properly torqued. Now getting 1.2mm which will do me.
Ports as follows
Exhaust 186 Inlet 171 Transfers 130
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