Lazer zxr

[Skidrow]

Contact me for any parts needed.I will probably be able to help. Will have to put up some info on my Lazer with which I did Petit and Euros 2010 among other events at some time in the near future

[Welshy40]

Originally Posted by oosh123

Welshy, the layshaft doesn't need to be re-designed. The only thing that needs work is the thrust plate that is contacting the slip pads.

It's diameter simply just needs to be larger.

If you think the using springs are better than the spring washers then yes, the layshaft needs to be re-designed.

The issue is bigger than you think. the layshaft is not long enough to fit a thrust race and is where the problem begins. To get a perfect contact with the SC10 slipper pads on my spur gear you need to use the Mk1 slipper plate and hub and due to that the shaft is not long enough for the thrust race, only a spring or in my case the ZX spring washers and its not good enough.

If Manolis (Skidrow) can make a longer shaft to account for this but would need further discussion as the shaft (before the screw threaded area) needs to be fractionally longer as well as the screw section to account for the thrust as well as accounting for a longer spring for more adjustment) then yes this would be great but I do believe to put this car back up there we need to do a rethink on the layshaft design. To give you an idea, in front wheel drive I did 1.5 seconds a lap slower than a fast B team driver from Durango and Schumacher, so imagine what the car could do if I actually had proper 4wd that had a slipper that actually worked. I reckon I would be a second a lap quicker on carpet.

[Welshy40]

Originally Posted by alcyon

Welsh, i tried the vaseline, and i am afraid it doesnt work, after a pack, the diffs feel loose like there is nothing in them. When i take them apart, i find that the vaseline is melted, and turns black. Not only that, some of it oozes out of sides of the diff output shaft.

Im still using vaseline and worked superbly well on friday before my belt snapped. I havent had any leaks but understandably will go black. Maybe a good idea to investigate the Kyosho diff grease then, as they do a variety of thicknesses.

[Welshy40]

Originally Posted by alcyon

yes you are right, the shaft needs to be redesigned. i see this as a better option, rather than designing a lot of new parts, you only design 1 and use standard other parts. attached is CAD thumbnail of my shaft. Notice the inner side is all optima mid, and the outer is B4 with the flat cuts.
Vega eh, is he the guy from street fighter II ?

Nice, I thought the B4 design was a hex but I guess not.

Vega makes some awesome alloy gearboxes and chassis for the mid motored Kyosho and Tamiya cars that are winning everything in the UK at the moment. Some of the best milled work I have seen, as good as my friend Manolis.

Gearbox redesign first then the shaft, as I need to tension the belt first before I go down the layshaft route. I now am unable to race my ZXR this weekend due to no belts. ZXS time and I am worried as I havent tested this with mini pins rear and staggers front so am unsure how its going to go.

[alcyon]

Originally Posted by Welshy40

Nice, I thought the B4 design was a hex but I guess not.

Vega makes some awesome alloy gearboxes and chassis for the mid motored Kyosho and Tamiya cars that are winning everything in the UK at the moment. Some of the best milled work I have seen, as good as my friend Manolis.

Gearbox redesign first then the shaft, as I need to tension the belt first before I go down the layshaft route. I now am unable to race my ZXR this weekend due to no belts. ZXS time and I am worried as I havent tested this with mini pins rear and staggers front so am unsure how its going to go.

Hi welsh. i am with you about the tyres, as i find the current crop Yank Prolines very ugly, they look so square almost like truck tyres not for buggies. I was wondering if there are any modern tyres that comes with inserts, but looks like the old 2.2" tyres from the early 90's. Do you understand what i am trying to say? The older 2.2's were kind of curved in shape and not flat, like the old ZX-R tyres. are there any modern tyres that look like that but perform just as great as the Proline M3's ?

[isobarik]

Oosh you dont have a clue the standard inner hub could easily betaken down to make way for the slotted B4/RB5 slipper plates but the outer part is the harder one my friend has an slipper shaft for the RB SC maybe copying that outer part with the inner part copied from the zxr shaft hm ...shall ask him.

mvh Isobarik

[Welshy40]

Originally Posted by alcyon

Hi welsh. i am with you about the tyres, as i find the current crop Yank Prolines very ugly, they look so square almost like truck tyres not for buggies. I was wondering if there are any modern tyres that comes with inserts, but looks like the old 2.2" tyres from the early 90's. Do you understand what i am trying to say? The older 2.2's were kind of curved shape and not flat, like the old ZX-R tyres. are there any modern tyres that look like that but perform just as great as the Proline M3's ?

Unsure as I use schumacher tyres as we race mainly on astro, grass and carpet, and mini spikes are rounded. kyosho still do tyres but really dont know an answer to your question. Sorry.

[Welshy40]

Any Lazer ZX/ZXR owners / drivers in the UK? If yes any one want to sell me a rear belt?

[superdez]

I don't know what the teeth size and length are but I used these http://www.beltingonline.com/3mm-htd-timing-belts-4573 for a few Yokomo YZ 10 belts

All lazer belts are M3

And front belt is 537 mm long and have 179 teeth 3,5 mm wide
rear belt is 177 mm long have 59 teeth and are 4 mm wide.

mvh isobarik taken from http://radiocontrolzone.com/showthre...=94239&page=54

They have them in stock and will do custom widths

[alcyon]

Originally Posted by superdez

I don't know what the teeth size and length are but I used these http://www.beltingonline.com/3mm-htd-timing-belts-4573 for a few Yokomo YZ 10 belts

All lazer belts are M3

And front belt is 537 mm long and have 179 teeth 3,5 mm wide
rear belt is 177 mm long have 59 teeth and are 4 mm wide.

mvh isobarik taken from http://radiocontrolzone.com/showthre...=94239&page=54

They have them in stock and will do custom widths

if i am not mistaken the tamiya 416 rear belt is 59 tooth ?

[alcyon]

I want to buy ceramic balls for my diff from acer racing, anyone knows the diff ball size for Lazer/Optima/Ultima ?

[oosh123]

Originally Posted by isobarik

Oosh you dont have a clue the standard inner hub could easily betaken down to make way for the slotted B4/RB5 slipper plates but the outer part is the harder one my friend has an slipper shaft for the RB SC maybe copying that outer part with the inner part copied from the zxr shaft hm ...shall ask him.

mvh Isobarik

I am guessing that I really don't have a clue.

Can you please explain to me that what is the main reason for this change? Is it to use the spring instead of the spring washers? If so, are the spring more superior than the spring washers, how?

[rondoolaa]

Originally Posted by Welshy40

Any Lazer ZX/ZXR owners / drivers in the UK? If yes any one want to sell me a rear belt?

arnt these ones any good mate ?



http://www.ebay.co.uk/itm/Vintage-Ky...#ht_3296wt_952

or this one in cornwall ?

http://www.ebay.co.uk/itm/KYOSHO-VIN...#ht_500wt_1202


is time against you,

ron

[Welshy40]

Originally Posted by oosh123

I am guessing that I really don't have a clue.

Can you please explain to me that what is the main reason for this change? Is it to use the spring instead of the spring washers? If so, are the spring more superior than the spring washers, how?

Sprung washers dont keep to the same tension if set loosely, as its gets looser and its buggered. The spring has more tension and holds it there so you can set it looser but we do need a longer spring to achieve this.

[Welshy40]

Originally Posted by rondoolaa

arnt these ones any good mate ?



http://www.ebay.co.uk/itm/Vintage-Ky...#ht_3296wt_952

or this one in cornwall ?

http://www.ebay.co.uk/itm/KYOSHO-VIN...#ht_500wt_1202


is time against you,

ron

Mate, thanks but the problem is i wont get it in time as its hong kong so need to buy one from someone in the uk so i can get next day delivery. Ive bought two tough racing but doubt it will be here in two days.

[Skidrow]

You can send drawings.I will possibly be able to help. The shaft will come with a finish similar to this found on universal joints,outdrives and other steel Kyosho components. I attach a sample photo of drivetrain components we do.

[isobarik]

Originally Posted by oosh123

I am guessing that I really don't have a clue.

Can you please explain to me that what is the main reason for this change? Is it to use the spring instead of the spring washers? If so, are the spring more superior than the spring washers, how?

Sorry didnt mean it that way.
Translation from my swedish to writing in english doesent match always.
you seams to have an anwser to all the lazer problems so i just woundered if you had an clue to this one also.

mvh isobarik

[isobarik]

Originally Posted by alcyon

if i am not mistaken the tamiya 416 rear belt is 59 tooth ?

That should actually be right

Note standard belt since the low friction type is 1 tooth shorter

mvh isobarik

[oosh123]

Originally Posted by isobarik

Sorry didnt mean it that way.
Translation from my swedish to writing in english doesent match always.
you seams to have an anwser to all the lazer problems so i just woundered if you had an clue to this one also.

mvh isobarik

Nope, still trying to understand this one. The person who have all the answers are Welshy or you =)

[oosh123]

Welshy, are you able to get your to get your gear supplier to make a 48p-100t spur gear to use with the Lazer ZX-5 or RB5?

If you can, I can take care of the rest of the layshaft. You also need to tell me how you want it with your rear gear box.