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Post by stewart on Feb 10, 2009 12:50:56 GMT
but how much fun are steam washers!!   neighbours will love you  |
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Post by lardyconvert on Feb 10, 2009 15:00:23 GMT
;D
Looking at how far i was standing out in the middle of the road, i'm just glad i wasn't run over!
But my mate has a workshop full of Ps, PXs and smallies so his neigbours are probably used to all the noise and oily puddles on the road ....
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Post by lardyconvert on Feb 10, 2009 17:46:39 GMT
Conversion crank mystery solved!.... i think......
When putting a 20mm PK flywheel onto an et3 there are 2 options.
1. use a std style 20/20mm crank that fits a PK and use smaller rolller bearing to make it all fit
2. Use a conversion crank that has a smaller diameter at the bearing, so uses a bigger bearing and still fits the 20mm fly.
Not sure if conversion cranks fail as much as 19mm cranks but that's what's now going in.....when the rest of the goodies arrive from Germany, and i've fixed the rust, and the front wheel bearings, and the steering bearings, and the.........
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Post by madmax on Feb 10, 2009 18:44:42 GMT
Hmm ok.  Mistery solved!  ;D |
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Post by unreliablesc on Feb 10, 2009 20:29:47 GMT
Conversion crank mystery solved!.... i think...... When putting a 20mm PK flywheel onto an et3 there are 2 options. 1. use a std style 20/20mm crank that fits a PK and use smaller rolller bearing to make it all fit 2. Use a conversion crank that has a smaller diameter at the bearing, so uses a bigger bearing and still fits the 20mm fly. Not sure if conversion cranks fail as much as 19mm cranks but that's what's now going in.....when the rest of the goodies arrive from Germany, and i've fixed the rust, and the front wheel bearings, and the steering bearings, and the......... still dont understand this crank of yours mate. the bearing is the same, (the bearing diameter is the 20mm part of 20/19) the difference is the oil seal dia (v=19mm, PK =20mm) and the flywheel taper. do you have a crank with 19mm oil seal face and PK taper? or do you just have a PK crank |
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Post by lardyconvert on Feb 10, 2009 23:04:56 GMT
Conversion crank mystery solved!.... i think...... When putting a 20mm PK flywheel onto an et3 there are 2 options. 1. use a std style 20/20mm crank that fits a PK and use smaller rolller bearing to make it all fit 2. Use a conversion crank that has a smaller diameter at the bearing, so uses a bigger bearing and still fits the 20mm fly. Not sure if conversion cranks fail as much as 19mm cranks but that's what's now going in still dont understand this crank of yours mate. the bearing is the same, (the bearing diameter is the 20mm part of 20/19) the difference is the oil seal dia (v=19mm, PK =20mm) and the flywheel taper. do you have a crank with 19mm oil seal face and PK taper? or do you just have a PK crank I'll get the part number and photos on the weekend, but it uses a larger bearing than the PK crank so my understanding is 19mm oil seal face and PK taper. All will be revealed Saturday evening!...maybe.... |
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Post by lardyconvert on Feb 23, 2009 18:06:54 GMT
ok, time for an update! Been having great fun pulling things apart and had a go with a dremmel for the first time on the engine....how do you guys get everything so straight! But apart from a few wobbles the project has been going well....though it has defintely stayed in the rustoration category!...been good to watch the other one progressing on scootsmith's thread. So, here are some pics of my dodgy tuning attempts... will def get a pro to work the cases when i put on a parma kit in 12 months! First off i got some welding done. Seemed there were 2 points of view here so went the safe option  Then thought i should open up the rotary inlet for the 24mm carb...wider on the outside, longer duration on the inside..... not much science involved so be good to get peoples thoughts on how far to keep going before moving to polishing stage for this daily driver with MZ cut crank.   So here was where my steady hand (NOT) let me down....no way i was ever going to be a surgeon!! So any tips here to get a good finish would be appreciated Still got a bit of cutting to go before i polish......  And as for the rusty bits, had the engine bay blasted, put on an anti rust zinc undercoat and then covered in underseal. I didn#'t get all the rust 100% but just don't want it to get any worse before i respray in 18-24 months.  So, learning heaps, Making a few little f*ck ups that JB weld will hopefully sort out  Next steps, finish cutting ports (again with any tips!!) and polish...with a bit of JB weld where required for any heavy handedness.... Thinking the engine might be ready to stick back together next week end!! BTW are Dunlop TT 92 in 90/90 a good choice? I have 2 but they look way skinny! |
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Post by lardyconvert on Feb 23, 2009 18:08:51 GMT
Conversion crank mystery solved!.... i think...... When putting a 20mm PK flywheel onto an et3 there are 2 options. 1. use a std style 20/20mm crank that fits a PK and use smaller rolller bearing to make it all fit 2. Use a conversion crank that has a smaller diameter at the bearing, so uses a bigger bearing and still fits the 20mm fly. Not sure if conversion cranks fail as much as 19mm cranks but that's what's now going in still dont understand this crank of yours mate. the bearing is the same, (the bearing diameter is the 20mm part of 20/19) the difference is the oil seal dia (v=19mm, PK =20mm) and the flywheel taper. do you have a crank with 19mm oil seal face and PK taper? or do you just have a PK crank Mystery solved, it is just a MZ "race" 20/20mm crank, with me a confused newbie |
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Post by swallow on Feb 23, 2009 20:26:36 GMT
i have been advised not to polish the transfers or the inlet - might look nice but has no benefit, or possibly might have a detrimental effect (based on no knowledge on my part rather a respected and trusted source! (tony))
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Post by madmax on Feb 23, 2009 20:41:07 GMT
Mystery solved, it is just a MZ "race" 20/20mm crank, Ah ah, I knew it!!! ;D |
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neighbours will love you 
Mistery solved! 
;D
