Rota Arm Problems on MG Midget Race Car

[raindancer411]

Boyfriend was racing at Silverstone this weekend and an on going problem keeps occurring with his car. A brief run down of the problem is that the rota arm keeps burning out.

Whilst racing at Silverstone, on the LAST lap, the car all of a sudden starting running lumpy, went bang a few times and stopped. When we looked at the car at the circuit, it turned over but didn’t always give a spark.

His dad went and brought a new rota arm, and the car’s started no problem. Trouble is he cant keep buying rota arms and not finishing races. It happen the time before at Brands.

Any ideas why the rota arms keep burning out?

[boredpilot]

Not sure what the rule relating to racing are but he could change the ignition to a lumintion either sports/normal ignition so getting rid of the burning/pitting issue

[lost my mojo]

Try bending the small spring with in the rotar arm to make it fit tighter on the dizzy spindle. Althoughh not racing I have had problems with my midget where by it kept wearing out rotar arms and then running lumpy. If not tight, the rotar arm can catch the dizzy cap, the constant contact loosens the rivet that holds the brass part of the rotar to the plastic part of the rotar causing rough running.

Hope this helps

[trackcar]

Did we not answer this already somewhere or was i dreaming?

[raindancer411]

Thanx for the replies everyone... Keeping fingers crossed for next race on Mallory... At least we got a few things to try now