6LikesSchumacher Mi4
, size 60T x 180mm, 3.6mm wide.
05-03-2011, 03:19 AM
#2705
Ran a search but couldn't find anything.
I noticed a groove in all of the arms (front and rear) that appears to be caused by the wheels. I guess they are compressing under load but it looks like someone took a dremel and started cutting the arms. If this keeps up, they're going to snap. I also imagine it's really slowing down corner speed.
Has anyone run into this? Why is this happening and what's a fix? I run on asphalt with medium flex arms, neg 2 camber all around, RP36's or CS27's for rubber.
Thanks for the help!
I noticed a groove in all of the arms (front and rear) that appears to be caused by the wheels. I guess they are compressing under load but it looks like someone took a dremel and started cutting the arms. If this keeps up, they're going to snap. I also imagine it's really slowing down corner speed.
Has anyone run into this? Why is this happening and what's a fix? I run on asphalt with medium flex arms, neg 2 camber all around, RP36's or CS27's for rubber.
Thanks for the help!
05-03-2011, 03:27 AM
#2706
I have been chewing through rear belts a fair bit too running Mod. They used to last about 6-8 runs. Check to see if the front/rear of the car is skipping under heavy acceleration as this will cause premature wear, and anther thing to check is the center pulley if the teeth are worn. I usually replace the belt and the center pulley at the same time. I am thinking of trying out the Stock Belt (GREY) as it is a lot more pliable and should wrap around the pulley and teeth better. Once of the local racers running stock has had his rear belt since mid last year, and the condition of it is almost like new. Mind you, he is still running the earlier white center pulley as well.
In the meantime, just keep an eye out on the rear belt tension. Tighten it if needed. After about 4-5 runs, I am on the tightest setting on the eccentrics, and the belt usually lets go 2-4 runs after that.
05-03-2011, 05:48 AM
#2707
Hey there. The grooving is pretty normal. Nothing much to stress about. It was happening on the Mi4 to the CX. If the rims are flexible, it will rub, but once the groove has been cut into the arm, it will not go further. I am using the Schumacher Rev-Lite rims, and they have a bigger inside diameter and they clear the arms fine. Also, if its that bad, try the CF arms as they flex a lot less.
05-03-2011, 07:34 AM
#2708
05-03-2011, 09:34 PM
#2712
05-03-2011, 11:47 PM
#2713
Tech Master
iTrader: (17)
Hi Gary,
I have been chewing through rear belts a fair bit too running Mod. They used to last about 6-8 runs. Check to see if the front/rear of the car is skipping under heavy acceleration as this will cause premature wear, and anther thing to check is the center pulley if the teeth are worn. I usually replace the belt and the center pulley at the same time. I am thinking of trying out the Stock Belt (GREY) as it is a lot more pliable and should wrap around the pulley and teeth better. Once of the local racers running stock has had his rear belt since mid last year, and the condition of it is almost like new. Mind you, he is still running the earlier white center pulley as well.
In the meantime, just keep an eye out on the rear belt tension. Tighten it if needed. After about 4-5 runs, I am on the tightest setting on the eccentrics, and the belt usually lets go 2-4 runs after that.
I have been chewing through rear belts a fair bit too running Mod. They used to last about 6-8 runs. Check to see if the front/rear of the car is skipping under heavy acceleration as this will cause premature wear, and anther thing to check is the center pulley if the teeth are worn. I usually replace the belt and the center pulley at the same time. I am thinking of trying out the Stock Belt (GREY) as it is a lot more pliable and should wrap around the pulley and teeth better. Once of the local racers running stock has had his rear belt since mid last year, and the condition of it is almost like new. Mind you, he is still running the earlier white center pulley as well.
In the meantime, just keep an eye out on the rear belt tension. Tighten it if needed. After about 4-5 runs, I am on the tightest setting on the eccentrics, and the belt usually lets go 2-4 runs after that.
05-04-2011, 12:40 AM
#2714
Yes... most definately. I think that is what causes most of the wear on the belt IMO. I have 1 white one that was painted black (can see it on the inside of hte threaded holes where the spur bolts on) and that hasn't worn as much as the all-black ones.
