ICS L85A2 Hop Up problem
 

Just recently bought an ICS SA80/ L85A2 and gamed it for the first time today. The gun was fantastic apart from one problem. For some reason the Hop Up is always making the BB arch upwards after about 100 feet, even on the lowest Hop Up setting.
Can anyone help me with my problem?
All help is highly appreciated :)
Cheers

Hi,
What's the weight of the BBs?
Fong

King Arms .25

have you tried removing the barrel/hopup assembly and checking the barrel for any obstructions

Like you, I noticed that at minimum hopup setting low weight BBs would arc up. You can either modify the hopup unit to reduce the hopup effect or change the rubber.

Fong

The hopup system was the main thing I hated about my L85 when I had it. Possible solutions are to use a rubber with the 'bump' shaved off, file down the 'nub pusher', or to put a small drop of glue on the part of the adjuster that contacts the wheel so it sits slightly higher.
As far as I remember, I used the shaved rubber. I've worked on a few different L85's though, and the filed nub pusher is definitely the more permanent solution.

Thanks for the input so far, I wish I was more Tech savvy, if I were to get another hop up rubber, are there any recommendations, I'll take a look inside when I get five this week.
Thanks Guys

Try the ARS Rubber. It has a smaller 'bump' than your average rubber, it may work better without modification.

I can't seem to find one, would you recommend one of these SCS rubbers? Would it work with the ICS L85 Hop Up system?

http://www.airsoftparts.ca/store2/in...oducts_id=1593

Cheers :)

http://www.airsoftparts.ca/store2/in...oducts_id=1772

:)

cheers mate :) don't know how I missed that :p
still curious about the SCS as well, wondering if it will fit the hop up.

Thanks again

That will only make your overhopping problem worse, unless you file the pusher.
Also, thats not a rubber, its just a nub.

Since I got it my ICS L85A2 (SA80) has been great except for the hop characteristics. Even with the hop off the BB's went skywards and off to the right.

The BB's going to the right is due to the hop applying 'lop sided' pressure due to its design and with the hop off some of the rubber bump was visible in the barrel.

This is what has worked for me..........

1. replaced the hop rubber with a madbull blue BUT i ground the hop bump off.

2. i threw the nub away and replaced it with a 5/32" ball bearing out of a bicycle head race set. 5/32 is just under 4mm and fits in the nub slot perfectly.

3. I reduced the height of the hop arm (the bit that pushes down on the nub) so that off was off and there was no protrusion into the barrel.

4. Now the new 'nub' pushes perfectly downwards onto the BB with no 'lop sided' pressure. When I applied the correct amount of hop the BB's fly straight and level with no deviation until the end of their flight.