|
#2641
|
|||
|
|||
B4 slipper clutch on optima mid
I just made a video yesterday of my slipper clutch working. have a look
http://www.youtube.com/watch?v=XdUQhxZO0ig The OT-66 tyres in action http://www.youtube.com/watch?v=IYu7hYSoF0c My pals Lazer ZX-R jumping. http://www.youtube.com/watch?v=nQPoxYsrjk8 |
#2642
|
||||
|
||||
Quote:
Also saw you slipper video plus the drawing of the layshaft. I think you have sorted this design and we do need the slot for the pin to hold in an alloy pulley for the rear belt in the zx/zxr. This means we dont need the layshaft hub and kindof makes life easier plus lightens the load on the layshaft. If you can do you think you could redesign for the zx, with of couse the threaded end for the one way as well?
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2643
|
|||
|
|||
Quote:
Welshy i can work on the shaft design, but its gonna take me time. i took about 2 months to sort out the shaft for my optima mid, spent a few hours after work at my home to draw the original shaft, then mate it to the b4 outer part, then create a drawing. the last bit is to wait for the machinist to make the prototype for me. It takes about 2 - 3 weeks for 1 prototype. learning from the 1st mistake (i only got the shaft working on my 2nd prototype) i made with my Optima Mid Shaft prototype, i should be able to get it right the first time around for the ZX shaft. But you guys gotta give me some time. i'd be honoured if i could find a good solution that everyone can use. |
#2644
|
||||
|
||||
Quote:
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2645
|
|||
|
|||
yes i see the problem now. The only way to hold the original Rear pulley in is with the rear splitter hub, so with the new shaft using the b4 slipper plates, a different pulley must be used. do you have a suitable pulley in mind? also what is the diameter of the shaft itself? is it 4mm? if it is then touring car pulleys will fit. But anyway i still need to make some kind hub to fit on the shaft and the bearing 10mm (or 8mm?) ID to take up the abscence of the rear hub.. if i remeber it right the layshaft bearings are 8x14mm?
|
#2646
|
|||
|
|||
spur gear
i forgot to ask one important thing. the B4 spur gears as far as i know arent anywhere near the size of the lazers 100tooth spur. Do you have a RW spur for the lazer that can fit the B4 slipper pads?
|
#2647
|
||||
|
||||
I redesigned the spur gear a while ago and is basically identical to the original but has an associated hex milled out on either side. RW racing sell them.
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2648
|
|||
|
|||
i sent you an email about a few things to sort out.
|
#2649
|
|||
|
|||
potential problems
i am starting on the design work now and already i forsee some big problems. for The Lazer its not as simple as the optima mid. The huge problem i see now are the pulleys. in order to make the left side front one way work, we will need to use the inner thrust bearings, and still maintain the correct pulley spacing to ensure that it lines up with the diff pulleys. The problem is the rear side of the thrust bearing is actually inside the rear pulley. You cant just slap a tamiya or drift TC hub type pulley next to one way, you actually have to machine a step into the new pulley so that the thrust bearing can sit inside it to maintain the correct pulley spacing.
here are a few possible work arounds. 1. forget about the top shaft one way. A new long pulley must be machined with a divider in the middle. This new one piece pulley will have a 8mm step extending outwards both on the left and the right ends to support the inner 8mm of the 8x14 bearings, with one end having a grub screw to tighten to the layshaft. the right side of the pulley will touch with the inner side of the B4 slipper plate to support it. Pros : easy to design Cons : In addition to making a new shaft, and new pulley must also be machined, making it costly. 2. Keep the left side with the original one way and pulley. On the right side, machine a new pulley with a 8mm step on the right side extending outwards to touch the inner side of the B4 slipper plate. Of course this pulley has a grub screw also to lock it in position. The left side of the pulley is machined a step to allow the thrust bearings to sit inside it like the originals. Pros : can keep the one way.cheaper than option 1. Cons : still have to make a new pulley. Option 3. Keep the left side with original one way and pulley and thrust bearings, also re use the original rear pulley. But machine a layshaft with a 8mm step and with the spline slots, much like the peak performance layshaft. Basically this one will be a peak performance layshaft with a longer end that will match up with the B4 slipper parts. Pros : only the shaft needs to be made, should be the cheapest and most practical option. Cons, getting the spline slot spacing right could be tricky, or machining the spline might be expensive. i beleive option 3 will the best. |
#2650
|
|||
|
|||
Quote:
|
#2651
|
||||
|
||||
Quote:
I still think a lot of people like me prefer the one way and with this option if someone wants a permanent 4wd all they do is tighten it up. Still if you put a slot in the layshaft for a pin to go through so you can bolt the pulley to it then once fitted you don't need to fit the e clip on the layshaft and due to this you can use a bearing instead of the thrust race and means that the bearing will be thinner and should be enough to make a perfect fit. Other option I like was having a flat spot on the layshaft and using an allen key to bolt the pulley to, but as you say is costly to make.
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2652
|
||||
|
||||
Yes your right, one of the pulleys (left one with the one way attached is the wrong way around)
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2653
|
||||
|
||||
Quote:
since tamiay smallest is 15 mvh Isobarik |
#2654
|
||||
|
||||
I forgot to mention my cad drawing been done and hope to by next week have my proto.
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2655
|
|||
|
|||
Quote:
|
#2656
|
||||
|
||||
I like the third option of a new longer layshaft.
but I will also make a larger diff ring. one that is OD 30mm and ID 14mm to utiliize all the unused b4 slipper pad.
__________________
Kyosho Lazer ZX-RS Kyosho RB5 SP2 WC - Vega Kyosho Mad Force Kruiser VE Kyosho TF6 SP Kyosho Plazma Ra |
#2657
|
|||
|
|||
i think i get what Welshy means. there is a type of pulley which is hubless and uses a 1mm slot, to place a pin inside to lock it. Unfortunately the only car i found using that system is the kawada sv-10 from 1998-2002. the pulley is very compact and can work for the lazer, now all is left is to find a similar pulley.i will post a pic of the pulley tonight.
|
#2658
|
||||
|
||||
I just thought of a easy retro fit to accomplish what we needed.
since the original design can fit everything except the thrust spring. We could add an extension shaft to the spur gear side using the M3 thread that's already on it. On this extension shaft, the length will be able to fit the thrust spring with a M3 thread at the end. I think this is the cheapest way of having a extended layshaft.
__________________
Kyosho Lazer ZX-RS Kyosho RB5 SP2 WC - Vega Kyosho Mad Force Kruiser VE Kyosho TF6 SP Kyosho Plazma Ra |
#2659
|
||||
|
||||
Quote:
Also there are loads of different size bearings that fit the layshaft, if memory serves me correctly i opted for a bearing from my sponsers motor and fitted perfectly. It was from a brushed motor. This made the car a bit more free so try it and see.
__________________
www.kamtec.co.uk www.fibre-lyte.co.uk answer-rc.com/uk/en/ Answer UK team driver Designer of the Lazer ZX/ZXR carbon fibre tub chassis Designer of the Lazer ZXRS |
#2660
|
||||
|
||||
14 teeth aluminum pulleys are easy to find and should be possible to order from youre LHS i know since thats what i did anyway.
mvh Isobarik |
Thread Tools | |
Display Modes | |
|
|