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Tubless rear

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Tubless rear

Postby jonoy » Mon Aug 03, 2015 8:09 am

I am changing to tubless rims
If I fit the wider rear is it straight fit
or does anything need modifying
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Re: Tubless rear

Postby Digger » Mon Aug 03, 2015 11:58 am

Wider rear?
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Re: Tubless rear

Postby Warkton Tornado No.1 » Mon Aug 03, 2015 1:34 pm

Presumably you mean a wider rear (tubeless) rim to suit the use of different aspect ratio tyres. It's probably a good change based on the tyre choice/availability alone!

No doubt you're aware that this will also effect overall gearing.

There may have been discussions on this Forum, but all that I know is that 110/90 x 10 may rub on the 'inner' crankcase face as may 4.00 x 10 on the bump stop.
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Re: Tubless rear

Postby monument7 » Mon Aug 03, 2015 1:42 pm

No doubt you're aware that this will also effect overall gearing.

How can it affect the gearing when the rolling diameter is the same ?. Just asking lyke
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Re: Tubless rear

Postby Bristol Daz » Mon Aug 03, 2015 3:20 pm

The rolling radius of the wheel will be the same, but if a different size tyre is used the overall rolling radius may change and alter the final gear ratio.
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Re: Tubless rear

Postby jonoy » Mon Aug 03, 2015 4:57 pm

Thanks for. The replies
I will just put same standard size front and rear
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Re: Tubless rear

Postby Warkton Tornado No.1 » Mon Aug 03, 2015 6:17 pm

Sorry!

I didn't mean to put you off, & in racing, the specials classes have used wider rubber on the back for years.

However, you have the consolation of precise interchangeability, front to back.
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Re: Tubless rear

Postby jonoy » Mon Aug 03, 2015 7:51 pm

It's ok
I've ordered a pair of wheels .
Then I started thinking about the wider rear. Would it make sense to go wider rear as I can still change the order .
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Re: Tubless rear

Postby ian i.o.w » Mon Aug 03, 2015 9:53 pm

wider on back for me more rubber on the road need to use a spacer to keep away from crankcase
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Re: Tubless rear

Postby hullygully » Tue Aug 04, 2015 1:50 pm

if you keep the alloys/steels the same but place the larger tyre on the rear then there's no mods @ all except for the stud replacement if using SIP
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Re: Tubless rear

Postby jonoy » Tue Aug 04, 2015 3:26 pm

Not Sip, Af Rayspeed
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Re: Tubless rear

Postby hullygully » Wed Aug 05, 2015 10:10 am

no mods then buddy
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Re: Tubless rear

Postby Fish » Wed Aug 05, 2015 12:11 pm

You will need longer studs on both hubs if using AF tubeless rims, on wide or standard
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Re: Tubless rear

Postby Rich Oswald » Wed Aug 05, 2015 12:15 pm

Fish wrote:You will need longer studs on both hubs if using AF tubeless rims, on wide or standard


Not correct for standard width. No stud mods req.
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Re: Tubless rear

Postby jonoy » Wed Aug 05, 2015 9:15 pm

Got my rims and tyres today
Supplied with tall dome nuts and 2 different washers
Cannot get the front on not enough thread
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Re: Tubless rear

Postby Fish » Thu Aug 06, 2015 12:32 pm

Rich Oswald wrote:
Fish wrote:You will need longer studs on both hubs if using AF tubeless rims, on wide or standard


Not correct for standard width. No stud mods req.


jonoy wrote:Got my rims and tyres today
Supplied with tall dome nuts and 2 different washers
Cannot get the front on not enough thread


Thats why I posted my comment - I had the same issue, change studs to longer and all good
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Re: Tubless rear

Postby jonoy » Thu Aug 06, 2015 3:17 pm

I may order a wider rear then I will have a standard rim as a spare.
Does the 350.10 tyre go on ok or do you put a different tyre on
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Re: Tubless rear

Postby bike grim » Thu Aug 06, 2015 4:02 pm

My AF Rims fit fine on standard studs, had them a couple of years have they changed something?
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Re: Tubless rear

Postby jonoy » Thu Aug 06, 2015 4:25 pm

Don't know I have the rear on but the front once the wave washer and split washer are on no thread for dome nut to grip
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Re: Tubless rear

Postby jonoy » Thu Aug 06, 2015 6:33 pm

One scratched to f--k font Rim what a waste of money
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