M109 rear wheel slip.

[YellowDog]

I'm posting for a mate who has a brand new M109. He rides 2 up with his lady and combined they weigh about 130Kg. He gets a lot of trouble with the rear wheel slipping on corners. It sounds like a suspension pressure issue to me however he says that it is not and many M109 owners have the same issue and generally change the rear tyre from day one.

This sounds like Bollox to me however I was wondering if anyone was aware of similar M109 experiences?

[Hitcher]

If Mrs H and I had a combined weight of 130kg, rear wheel slippage would be the least of my worries...

[duckonin]

loosen up on the hand (throttle) going into and around a corner those bikes have exceptional Torque avalible, apply the gas more when the bike starts to stand up a bit..Tyre pressures, and yes may need a bit more preload...

[The Stranger]

If Mrs H and I had a combined weight of 130kg, rear wheel slippage would be the least of my worries...

I take it you would be concerned as it would mean she was 5kg.

[YellowDog]

loosen up on the hand (throttle) going into and around a corner those bikes have exceptional Torque avalible, apply the gas more when the bike starts to stand up a bit..Tyre pressures, and yes may need a bit more preload...
I hadn't thought that is might be that he's letting the bike work through the corner. He says that the excessively wide rear wheel exerts a braking effect on the bike, hence why he sees the need to use power.

I'd prefer a C50 myself, which seems to be a better balanced unit.

[Hitcher]

I take it you would be concerned as it would mean she was 5kg.

Well, let's just say less than 30kg and leave it at that, eh?

There's a big difference between a waif and a wafer.

[awayatc]

. He rides 2 up with his lady and combined they weigh about 130kg?

Well that's the problem isn't it...?

Not that they need more preload......they need preload..
Period!

Sounds to me they need seatbelts rather then helmets.......

Fly off in a bit of a headwind...

[YellowDog]

Well that's the problem isn't it...?

Not that they need more preload......they need preload..
Period!

Sounds to me they need seatbelts rather then helmets.......

Fly off in a bit of a headwind...
You are right in that it is a big bike for such a light weight.

Seat belts or maybe parachutes.

[chucky19]

Never heard of this issue.

Sounds like he's either heavy on the throttle or (more likely) he's changing down and letting the clutch out without giving it some gas. These things are heavy on engine braking, especially with the shaft drive, and he's most probably locking up the back end.

I got a lecture the other day by a knob riding a harley (ulysses member of course) cos he saw me using the brake around a corner.:tugger:

He reckoned I'd have more power if I didn't do it. Of course being a tractor rider he didn't figure that I didn't need any more power, and of course being in a group ride it's always nice not going up the rear end of the person in front of you.

[Wingnut]

Never had that problem on mine. Then again I weigh around 80 and very rarely took anyone on the back..

[240]

Yeah mate I agree with most of the above .The 109 has massive engine braking and does not like being told what to do mid corner!!
Just tell them to cruise through the corner and let the big boy do its thing then twist the throttle and enjoy!!!:Punk:

[marty]

Is he positive it's wheel slip and not swing arm/frame flex? I was staggered at the jello-like feeling of the whole bike when being pushed along on roads it's not designed to go on.....

[CookMySock]

Check tyre pressures. Try lowering them a bit. Tyres inflated harrrd are skittery as fuck.

Steve

[YellowDog]

OK now he has explained that it only happens in the wet. In the dry he is very happy with the handling however in the wet he finds it unpredictable and prone to slip whilst cornering. Apparently there is an alternative tyre brand that is better in the wet.

I told him that not one KBer agrees with him :)

[s8306]

More than likely stock tires if he's still on them.I'm pretty sure most of the Boulevard series come out with Bridgestone tires,i know my S83 did.Bridgestones are not good in the wet especially with that amount of torque.

[Headbanger]

Surely the reference to 130kg is a bit of a red herring?

I'm 125kg before lunch, never thought twice about how my fatness would affect a bike, And for all the bikes I have ridden I can't think of one instance where anything has happened I would attribute to weight.

I wouldn't expect anybike over 400cc to even notice. Well mabe something that revs high but has no balls.

My bike doesn't even notice when Mrs Headbanger saddles up behind me. Granted shes a petite 52kg but that's a combined weight of nearly 180kg