when I train my bicep using dumb bells the first thing that hurts is my forearm which stops me from going heavier,
do i need to work on my forearms more so I can lift heavier weights to work by bicep

 

Use a barbell mate. Start with the move of starting from the elbow at a 90 degree angle and move to 180, back down to 90 then to 180, do 8 reps at 4 sets and see how you feel.

 

Try loosening your grip on the dumbell m8.Most peeps get this and thats exactly what causes it when you start to push heavier and heavier weights.Its hard to get used to at first but after a short time your hand will naturally grip the dumbell looser

 

What weight dumbells you using mate? Do you normally have a good grip?

 

the dumbell has a stainless bar which are a sod to grip espeically when you have a sweaty hands,I do sometimes wear gloves

 

I use 20k to 22.5 for single ar curl over a bench,15k for seated curl to keep good form and again 15k for hammer curl,17.5k for single arm seated off my leg

 

I think you just need to relax mate. Is there any chalk in your gym?

 

no mate theres not a lot of anything in there really as its the health club innmy local hotel,no bars just free weights dumb bells the heaviest being 37.5k whcih I flat press so i may have toi change gyms as theres not enough weight,there is also single cable machine,shoulder and chest press

 

Do you wear straps when training back? If so you may have a weak grip.

Personally I only use straps for shrugs and deadlifts so that my grip is strong. It used to go first but the more you train the better it gets and it never normally lets me down now.

 

17.5kg for a single arm curl is a fair weight! No wonder your forearms are sore lol
I have this bother too, forearms usually restrict me a bit

 

I can do 22.5 single arm over the bench

 

"I can do 22.5 single arm over the bench"


Maybe one day for me

 

your form is probably shit. no offence. try dropping to 10 or 12kg, concentrate very hard on keeping a loose grip, keep your back straight, upper arm perfectly still with elbow 2" from your side and ensuring youre only engaging your bicep to lift the weight. you dont need to lift much weight to have your biceps screaming in agony.

 

no offence taken mate,in fact i welcome constuctive comments
I did drop the weight and loosened my grip,seems a lot better now,we will see in a few months time