Swing Axle vs IRS Technical Topic

Post Reply
Registered user
Posts: 111
Joined: Thu Mar 07, 2019 11:25 am
Location: Bromsgrove

Re: Swing Axle vs IRS Technical Topic

Post by Gemmas »

I’m currently looking at replacing the gearbox
IRS from a 1303 and using early bay drums and spring plates , drive flanges , what is the rear brake hoses I need bay or split screen ones ? Or 1303

Registered user
Posts: 6
Joined: Fri May 08, 2020 11:39 am

Re: Swing Axle vs IRS Technical Topic

Post by Turkis62 »

I've been searching but can't find an answer about track width with a boxwagen irs kit using early bay rear brakes. I want to run 215/75/15 tires on a flat lip bus and any track increase might scupper those plans.

Does anyone here know if this conversion widens rear track at all?

I've emailed boxwagen but got no response

Registered user
Posts: 2
Joined: Sun Mar 19, 2017 9:05 pm

Re: Swing Axle vs IRS Technical Topic

Post by foleysplitty »

Hi Folks - quick question linked to IRS.
I'm currently restoring my 1973 Brazilian Split - and I've went down the road of IRS.
I have all the bits...bay drive shafts, hubs, swing/A arms, spring plates etc.

Does anyone know the precise length you have to alter the A arm? It's off a 74 Bay, I'm told its possibly 20mm that has to come off?

I'm fitting with Harry Harpics brackets.

Post Reply