Get a carbon fibre rear tower as they dont bend

true, but I broke a fibrelyte rear carbon tower the week before. thought of getting the standard fibrelyte ZX rear carbon tower as they seem stronger than the 3 hole design you did for the ZX.

Alloy Optima Mid upper deck mount anyone? made out of 6061 Aluminum.
http://i185.photobucket.com/albums/x...ps3ca43eb5.jpg
http://i185.photobucket.com/albums/x...psc4de24d8.jpg
http://i185.photobucket.com/albums/x...ps0e99f857.jpg

Make it thicker and then it should be ok. Also nice alloy mount

Do you make a Spur Gear Cover?

Maybe also chamfer those parts where the screws holding the upper plate to the upper deck mount, in case someone wants to run stickpacks for vintage's sake?

chamfer or make it thinner ? as far as I know chamfering wont help with stick packs unless that part is made thinner by 1mm.

I am sorry, I do not make anything associated with polycarbonate or bodies, there are already so many people doing that like TBG, Marwan and Kamtec.

I was thinking of increasing the surface area where the shocks mount. Because it seems to be rather thin at that side to save on weight, I presume that's why it broke. I will be coming out with my own drawing for rear ZX-R tower based on your design with some tweaks.

Any time line on when the Lazer top shaft will be ready to purchase? Thanks!

Im trying to finish my report today so Alcyon can tweak and then give an update soon

James and Rama, any update on the layshaft?

Alcyon's getting one made for me now so hope to have soon. Will update when ive got it.

How about a belt conversion for the Optima rear transmission? So omitting the center gear, using a pulley with teeth to accommodate a belt instead of the metal gear that sits on the layshaft, and replace the half of the rear diff that has teeth, with a part that accepts a belt. This might eliminate the risk on grinding teeth on the center gear and diff, and be more quiet and maybe more efficient too.

You could use a Triumph ball diff as the belt pulley is full width of the diff
The only catch is its a finer pitch like lazer belts.
A Lazer pulley will fit the front gearbox but you will need to get a front belt that is the finer pitch.
Because the drive pulley on the layshaft will be small diameter like a Lazer its probably best to move to a finer pitch belt anyway

That might work, but I would prefer something less invasive. Like you find out the gears are wrecked and need replacing, but instead you slip in belt conversion kit, replace the wrecked diff half, slide off the metal, gear, replace with custom pulley, place the belt, maybe add an idler roller to keep the belt free of the inner side of the gear case, and close it up.

Oh yes I have thought of that before, but doesn't seem very feasible. I get you, to change the optima mid into a twin belt car like the lazer. I would say this is possible but will require a lot of work. Let me see if I can work something out.

New batch of B4 optima mid slipper shafts are ready. One booked for guycali.

Any update on the layshaft for the Lazer and what Associated parts would I need to build the full slipper?

I sent new coated and revised prototype to weshsy40 last Saturday. Lets see if this time its spot on.

OK cool, I'll wait to hear the final verdict :)

Thanks alcyon

Ok verdict time regarding prototype layshaft. Just looking at it shows how good a machinist he is. Fitted for pictures minus e clip and spacers but does go together really well. With vts slipper fitted there is plenty of room and enough clearance for the gear cover to go on without hitting the plastic section of the slipper clutch. Feels right. Now to fit in my gearbox and ready for the testing. Pics to follow tomorrow.

Sounds good, looking forward to the pics :)

Ok sorry for the delay been unable to upload from my phone. The Layshaft looks stunning on its own and was a shame to fit it into the gearbox but as you can see looks alright with the VTS slipper. Now for the testing part

Looks spot on and is that the standard Lazer gear cover?

Yes identical copy from a chap in Canada who also does the body and undertray :woot:

looks great :thumbsup: has the lay shaft been treated/hardened for the one way bearing front drive to prevent wear?

Apparently so.

The base material is ASSAB 705 and it has been coated by a process called flash chroming. The ASSAB 705 is supposed to be a harder material than steel but it still wore out at the one way bearing, as witnessed in the second prototype. This version has been flash chromed, hopefully this will solve the wear issues. Only testing will tell.

What material are the original kyosho layshafts made from?

That i dont know. I keep asking the guy to copy the original material he says he doesnt kn9w what is the material.

Copying the right materials requiring to grind it down to get som steel dust and then you can run it in a spectrum analyzer to analyze whats in there like

carbon, manganes silica aluminum chrome bore titanium phosfor i guess there are alot of miss spelling now.

mvh isobarik

lol, I live in a banana republic 3rd world country, don't expect those really expensive hi tech analyzers here. No doubt Malaysia is doing very well for a 3rd world country, but then again , to illustrate, I have to get used oil analysis done in the U.S, there are no such companies doing them here. If I were to ask for spectrum analysis, the machinist here will probably laugh at me.

Ok ive fitted to my own carbon fibre gearbox and have more room available to me, roughly 1mm more to be exact and am happy that it can be used in both gearboxes. Ive fitted without the circlip and have zero spacers on the layshaft. Pics to follow

and thats what i do at work providing hopefully correct steel samples that are run in the speccy as i call it and hoppefully its ok......

but i cant test the layshaft in case you are woundering about it .....

mvh isobarik

Ok then please test your original and let us know !
http://www.youtube.com/watch?v=QrZf_...ature=youtu.be
Ran my optima mid today. unfortunately not off road

Sorry cant do that maybee if i talk to some peoples first shall try.

Alcyon when can we buy the layshaft and suspension arms ???

mvh isobarik

Quite quick when you open it up. Layshaft doing a great job.

NICE :thumbsup: Count me in for 1 layshaft Rama!!

Hi iso,i still think its better to wait abit to see if the shaft bends. Arms I can sell, but I only have 1 complete set right now. I tested the arms myself trough terrible rough track abuse and they did not fail.