My AT1-C cut out on a ride owing to the positive cable insulation wearing through and shorting on the seat base.
Sounds like your lose connection is a likely suspect.
Incidentally I have the Motobat  battery and it has been fine.

Hey Pete does your starter turn over faster because the motobatt has more cca Thanks 

I don’t think storage capacity will have any effect on how fast it turns over.
I did clean the armature which did make it turn over faster than when I got the bike.

Might be wrong & happy to be corrected!!, but thought the larger amount of CCA's the more likely you are to get full cranking speed out of 'any starter'. When the the going gets tough, the CCA's do matter. Like you could getaway with starting in gear just pulling the clutch in even if the clutch 'might' be very slightly hanging on & the bigger CCA's power through. Gotta have heavy wires doing their job off course on earth & possitive plus from solenoid to starter terminal. We can buy those cheapy jumper leads here that when you disect them the wire is only spark plug gauge in a fat cover & not up to the job. Jump starting my car etc i doubled the leads with the desired effect. Actually i've got some very heavy ones someone made up with extra extra heavy gauge wire which i loaned to someone & can't think who. Probably still in our road with a bit of luck.

Morley I agree I do know more cca is important on a diesel truck so I would think the same for a motorcycle starter too

I'd say you're both correct... CCA's definitely can make a difference with cranking power...

What Pete said is also true... "storage capacity" doesn't really have an effect on cranking speed. (MotoBatt has a higher amp-hour (AH) storage capacity rating than a stock battery.)

Two different specs with different meaning.

I've seen the difference in AH ratings... not sure I've ever seen CCA ratings compared on stock and Motobatt but I haven't looked either.

Actually the first model AT1FE we sold plenty of to farmers, were a bit lazy in the starter & needed the battery right up to spin it. Where the later model with reed valve [like in this post] seemed to have a more efficient starter. Early piston port model AT1FE down here had a bigger armature. I think [might be wrong] all the stator armature combos swap onto all the motors right through. Bigger armature made a lazy piston port motor even 'more' lazy, but the reed model with smaller one was real perky. Sorry--reminiscing again lol.

I guess i was confusing capacity with CCA cold cranking amps but just google [& haven't read yet] this link was first up. Did read first line that said there's no direct link between the two--but anyway!!. Ok, copied the first bit.

Conversion between Cold Cranking Amps (CCA) and Amp Hours (Ah) is not a direct one for one very simple reason: Cold Cranking Amps describe the ability of the battery to provide strong currents required for starting/cranking of internal combustion engines, usually for 30 seconds, while Amp Hours (Ah) describes the capacity of the battery and its ability to provide certain current for, usually, 20 hours.Basically, Cold Cranking Amps (CCA) and Amp Hours (Ah) both describe the capacity of the battery and its ability to provide current for some time - they are just two extremes of battery usage

www.batteryequivalents.com/how-to-conver...to-amp-hours-ah.html

this could end up like 'an oil' discussions lol.

The way that article explains it is a little confusing to me, what else is new. 

Think of two five gallon gas cans.  One has a half inch diameter nozzle and no vent tube.  The other is a "quick fill" can with a 3 inch diameter nozzle and a large air vent tube. 

The capacity of both cans is exactly the same 5 gallons...  so each can is storing the same amount of energy.

The difference is it might take 10 minutes to pour the 5 gallons out of the can with the small nozzle into your gas tank...  the "quick fill" can might empty the whole 5 gallons into your tank in 3 seconds. 

Both gas cans have the same "capacity"....  but one has a design that can deliver that capacity MUCH faster than the other.

AH is a measure of how much capacity the battery can store...  similar to how many gallons a gas can holds. 

CCA is a measure of how fast the battery can release that energy... similar to how different gas can designs pour faster than others.

Conventional lead-acid batteries generally have decent "CCA" ratings....    some battery designs have really high capacity (AH) ratings but are designed for long term slow discharge loads and have terrible CCA ratings...  they just can't deliver the power quickly and might not even work for a starter motor application.