Page 1 of 1
150 tyre on kr1s
Posted: Sun Mar 10, 2019 6:34 pm
by headcoats
Anyone fitted a 150 tyre and how much gap is left tyre to chain in mm ?
Also I know it's a 150 but could someone put the verniers across the broadest part please ?
I have machined 5mm off my sprocket carrier too for the LC build and fearing I won't have room
Re: 150 tyre on kr1s
Posted: Sun Mar 10, 2019 7:07 pm
by Luders
loads of space Martin, I used to run them in 2011
Re: 150 tyre on kr1s
Posted: Sun Mar 10, 2019 7:11 pm
by headcoats
Cheers Luders but I have machined 5mm off the carrier , so the chain will be 5mm closer to the tyre
Re: 150 tyre on kr1s
Posted: Mon Mar 11, 2019 9:31 am
by Luders
Should still be okay, I ran 160's in a std swing arm on the bike you saw
Re: 150 tyre on kr1s
Posted: Tue Mar 12, 2019 7:36 pm
by KR-1R
is a function of tyre brand which for a nominated size could be wider by +/- 10mm
and rim width - same for cars
being the running gear is in a different chassis/engine output centreline
if it doesnt fit then offset front sprocket and respace the rear to suit - that youve already done...
Re: 150 tyre on kr1s
Posted: Tue Mar 12, 2019 7:48 pm
by headcoats
Yes but with the puny LC chassis it's like threading a needle , hence the carrier being machined 5mm in so it misses the frame plate
I know a 140 fits but had a feeling with the 150 it may not
Re: 150 tyre on kr1s
Posted: Wed Mar 20, 2019 10:15 am
by headcoats
I have a 150 tyre here , not fitted to the rim and it measures 160mm across
That's why I need someone with a BT tyre fitted to give me the measurement please
Re: 150 tyre on kr1s
Posted: Wed Mar 20, 2019 12:47 pm
by Luders
On a rim it would never be 160
Re: 150 tyre on kr1s
Posted: Wed Mar 20, 2019 1:13 pm
by Garry
I have a BT090 150 section and edge of tyre to inside of chain is approx 12mm (can't measure exactly)
Hope that helps
Re: 150 tyre on kr1s
Posted: Wed Mar 20, 2019 7:17 pm
by headcoats
Cheers Gary
Well with my 5mm machined off the sprocket carrier then that measurement will give me 7mm clearance
How about cutting a piece of carboard 12mm wide and see how it sits between the chain and tyre
Thanks in advance
Re: 150 tyre on kr1s
Posted: Thu Mar 21, 2019 11:21 am
by Garry
That measurement should be good enough for what you need - it could have a 2-3 mm tolerance either way anyway depending on how accurately the wheel is lined up.
Re: 150 tyre on kr1s
Posted: Tue Aug 23, 2022 10:06 pm
by 365motos
My track bike has a 160 on it and it's tight but there is plenty of clearance.