AMS Motorsport

[MillaMeter]

Hi,

Just sold an engine to AMS motorsport, he asked me if it had a slipper clutch in it and I said yes. KBATL right? Anyway, he received the engine today and wasn't happy at all. He phoned and emailed me saying that the slipper clutch was missing? I said no it's not it's still in the engine. He argued the toss etc... Because he thought he was buying a SP engine when I clearly said in my emails that I doubt it very much. He took the risk and bought it. Fair enough yeah? It turnt out that I decided to remove the clutch plates to put in my new engine (which didn't have any plates) so I needed plates to run my bike on the road blah blah blah... He said it's the clutch plates that makes the clutch a slipper???????????? So now, he thinks the clutch isn't a slipper because it hasn't got the genuine kawasaki clutch plates in it.

Please someone correct me if I'm wrong but pretty much all L model engines have the KBATL which is pretty much what a slipper clutch does right?

Regards

Rich

[Davw]

Sounds like he might have a point. Regardless of wether it is a slipper clutch or not - without the plates it isnt a clutch at all. Sounds like you knew it was a standard engine - he thought it was an SP (based on what you told him). I guess if it helps (although none of my business) putting myslef in hs shoes I would be a bit pissed off

[MillaMeter]

Sounds like he might have a point. Regardless of wether it is a slipper clutch or not - without the plates it isnt a clutch at all. Sounds like you knew it was a standard engine - he thought it was an SP (based on what you told him). I guess if it helps (although none of my business) putting myslef in hs shoes I would be a bit pissed off

Hi,

Yeah I sort of see his point aswell and I would be pissed off too, but... he said to me what makes the clutch a slipper is the clutch plates themselfs. Thing is I could of left EBC plates in the engine and he'd still have a dig at me about it because apparently the slipper plates are meant to be thinner???

Regards

Rich

[will#224]

Thats correct, the thickness of the plates allow the clutch to slip.

[RedexRobB]

So, buy him a set of plates i guess?? Or refund him the difference?? Or take it back?? What does he want?

Im of the thought that if your selling something and your not 100% sure what it is, then dont advertise it as so. Even a 'maybe' will imply something, and people are bound to be dissapointed. Im sure you will get it sorted, i spoke to him a while back and he seems a reasonable enough chap you just need to come to an agreement that satisfies both of you.

Cargo says he's never seen a slipper clutch, maybe hes completely right, its just the plates he hasnt seen? Ive always thought the slipper clutch was soething to do with the basket, never thought it was something to do with the plates.

[WelshD1K]

i thought it was a combination of basket + plates ?? ><

[Mori Man]

The Steels will be thinner than a non BTL clutch (Back Torque Limiter) but it is the clutch hub that makes it slip and not the steels.

if you strip on down you'll see a centre section with three indents and three prongs on the basket - this is the part that which makes it work.

More sophisticated clutches have s in between the pressure plate in them too which really make you able to kick down the gears heavily - I'm sure ZX7-RR has this in it but can post up pic's to show.

You can adjust the operation of the clutch by using a combination of different thickness steels which effect it but they do not make it a slipper clutch.

MM!

PS. Did you say it was a complete engine? If so, I would be pissed too to open it up and find missing parts.

[MillaMeter]

Hi,

We've been talking over email and I've agreed to send him the plates I took out of the engine to put in mine, I found a spare set laying around so I put them in and I'm now gonna send him the slipper plates. I didn't say it was a complete engine no.... I told him that the head was ticking a bit, the cam chain was near enough max and the tensioner was taken out to use in my new engine as my new engine had the old skool type. I also told him that the starter motor doesn't work but I gave him it anyway. He was totally cool with the things that were wrong with it, I just didn't send him the friction plates thats all. Not really a big deal because I'm now gonna send them off to him.

P.S. He said it was the friction plates that makes it slip not the steels? is that right?

Regards

Rich

[Mori Man]

Well, I think you've been a gent sending them out

Good you got it resolved but don't think you done anything wrong as it was sold for spares rather than a working motor.

I thought these were BTL clutches in the bikes for banging down gears and not get any rear end hop, they are also neigh on impossible to bumb start because of them

Slipper clutches make for smoother gear changes and indeed as your friction plates wear it begins to slip too but when under load and kills the power output. I think a GTR1400 has a slipper clutch but I do know the zephyr1100 has a BTL clutch - they are different.

I'll know better once I get the clutch stripped on spare engine two as I want to see if I can adopt it into my ZRX.

[tk400]

The slipper clutch itself is the same in the zxr400 as the zx7rr or zxr400sp/f3. The friction plates have nothing at all to do with it (except if they are worn). The thickness of the steel plates is how you adjust the slipper clutch. As standard the clutch is fairly limited . Kawasaki has a series of clutch plates that are of varying thickness to adjust the clutch. these are kit parts. That said you did not say it was an f3 factory tuned slipper, just a satandard L model slipper. In any case sounds like both are happy now.....cheers

kind regards TK400

[jake]

Hey, tk400
Do you think that these steels with the dimples on a few people have come across could be the kit steels?
I havent had my hands on any to have a measure to compare yet, just a thought really