j125 / tzr 150/ reed valve

water cooling is now in the mix, just the head to keep it simple. i have looked at a radiator from a gas gas trials bike, nice and small with a fan if needed . i wont need the engine cowl as the cylinder is upright (better air flow over the cylinder). and the varitronic ignition i will be getting has no fins on the fylwheel. the pump will be driven of the spare feed from the varitronic ...... simples the head will be made from the same billet as the packer plate. it will be a 2 piece job and i might even move the plug to the centre ( easier to machine). with a small adjustment to the frame for clearance

Crickey. Nothing like keeping it simple!

Really looking forward to seeing this. You think you will only need to cool the cylinder head if its water cooled?

i dont think my engineering skills could run to a full water cooled cylinder aswell

Simon, from what i can see your engineering skills are bang on, your pushing new boundries here i think with the water cooling idea. Carry on with the idea this is the stuff that will stand out in the future and will be looked back on as to how you did it.

just noticed something regaurding the radiators i am looking at. motor cross radiators are slightly bigger with no fans. trials bikes have very small rads with fans, as trials bikes spend a lot of time ticking over with no air flow over the rad they need a fan. vice versa with motox. i will going with the no fan route. something like these will do the job

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170513954254&ssPageName=STRK:MEWAX:IT

or

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220638092769&ssPageName=STRK:MEWAX:IT

just waitng for some parts to come in. water pump , rad, crank pin and packer plate to finish. also all the parts to rebuild the engine, bearings seals etc.

i now have a varitronic ignition to go on this project. it needs a bit of tweeking to fit but should work ok

i will have a new old stock allspeed exhaust in a couple of days. it will need a down pipe making up plus some brackets . i dont know how it will perform, it will be a suck it and see job

simon,
i have got my frame at home, i can drop it off at yours if you wish, for the box to be cut in and welded.
ps, i'd need your address though

daz.h wrote:simon,
i have got my frame at home, i can drop it off at yours if you wish, for the box to be cut in and welded.
ps, i'd need your address though

email sent

exhaust is here , will put some pics up soon

new pipe





varitronic base plate machined down to fit mag flange

here is the packer plate

i think i will be on with the exhaust next week . other things left to get are a carb , reed block, water pump, radiator and a water cooled head

very flash

i have daz h's frame for some butchery. this is the mk2 big box conversion by that well known italian tuning house . more pics to follow as and when i get chance to finish. here are a few pics







looking good, eh daz

nothing like a big box to keep a man happy
its looking great simon, much appreciated, i was actually going to ask if it could be made deeper, obviously great minds think alike

the next stage of the big box.

looks great simon, talented guy !!

i will be making a box to fit inside the outer frame. the holes in the outer frame will have some captive nuts on the back then the inner box will have some counter sunk holes in so that the heads of the fixing bolts will be flush with the surface of the box. you will then be able to remove the inner box if you need to to add or remove your hidden electrics or water pump

yep, i stand by my previous post,

hows it coming along simon?

shoild be ready by next weekend. i am having to work duringmy hollidays .

working during holidays
i suppose at least it gurantees your next contract
great work simon, many thank, looking forward to getting it back and into paint.

nearly done