For those of you who have fitted the AF 5 speed boxes, did you need a selection of shims to get it right?
Thinking of buying one, but didn't want to have everything pulled apart to only find I haven't got the right bits.
Thanks,
George.
AF 5 Speed Fitting Question
-
alanscottj
- registered user
- Posts: 960
- Joined: Fri May 23, 2014 6:54 pm
- Main scooter: Lambretta GP SS250 Casa
- Contact:
They recommend having a range of shims on hand but they also say that if you know the size of your existing shim you should be able to use the next 1mm shim down. It's all in here:
http://www.afrayspeed.co.uk/images/instructions.pdf
Hope that helps
Scott
Lambretta Series 2 Rat - RB260, SuperTourer, Cyclone 5 gearbox 😎👍
You will also probably need rear hub bearing shims.
-
holty
- registered user
- Posts: 908
- Joined: Wed Jul 15, 2015 11:52 pm
- Main scooter: lambretta gp
- Location: east yorkshire
- Contact:
yes you will probably need a few shims, just fitted one for a mate, but he also used a jockeys rear bearing in a spanish casing and a nos layshaft, af do say it needs to shim up between 1mm and 1.4 if i remember correctly
I ended up with a 1.4 in there, way smaller than existing. They do tell you the right way to go about it in the instructions.
-
corrado
- Dealer
- Posts: 2588
- Joined: Thu Jan 08, 2009 1:12 am
- Main scooter: Lambretta GP
- Location: Top of Blackpool Tower
- Contact:
AF say that it generally sits about 1mm taller than your existing 4 speed gearbox, so if you've got a 2.4mm shim in there now you'll probably need around 1.4 for the 5 speed.
And if you currently have a 1.8 shim you will need a rear hub bearing shim to move the gears back enough to get the minimum recommended main gear shim size.
-
rosscla
- registered user
- Posts: 4823
- Joined: Tue Oct 25, 2011 9:50 pm
- Main scooter: Lambretta
- Location: Lanarkshire
- Contact:
Eden, do you mean an extra shim between the inside bearing face and the layshaft?
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
-
holty
- registered user
- Posts: 908
- Joined: Wed Jul 15, 2015 11:52 pm
- Main scooter: lambretta gp
- Location: east yorkshire
- Contact:
i think you will need a shim to move the rear wheel bearing out to create more space, i used a jockeys rear bearing and they come with 2 shims, i had too much space so turned down the inner shim on my lathe to get the shim into the recomended 1.0 to 1.4 that rayspeed say is needed
No. I mean between the bearing and case