Rear wheel balance - SV650.org

22-10-08, 04:44 PM

I just had my tyre refitted to a repaired wheel by a garage local to my work, nice bloke, didn't charge me either! Only thing is he's telling me that the rear wheel of a K7 GSXR 750 doesn't really need balanced...I tried explaining that it had a balance weight fitted before it was repaired, but he was adamant that it wasn't required...

So, is he talking b**ll*cks or not? Any takers?

Not sure if I should just re-fit it and see, but I'd rather not find out the hard way.

22-10-08, 04:58 PM

Whilst you won't feel it as you would a front wheel inbalance, I'd have thought it would be working the rear shock all the time. I'd not be happy with that myself.

22-10-08, 05:11 PM

Balance it yourself ... stick the spindle in, either end on axle stands, wheel free to rotate.

Heavy bit will come to rest at the bottom. Add weight 180deg from it (at the top) ... rinse and repeat until it isn't really settling in any one place any more ...

Balancing the rear wheel isn't as important as the front as you won't 'feel' it as much ...

As for wearing the shock ... bumps in the road do enough of that for you ... as does the chain flapping about!!

yorkie_chris · 22-10-08, 05:16 PM

Rear doesn't matter so much

23-10-08, 10:08 AM

It does need balancing, if he has tested it and says it needs no weights added I would be very surprised!

23-10-08, 10:10 AM

Quote:

Originally Posted by Dangerous Dave

It does need balancing, if he has tested it and says it needs no weights added I would be very surprised!

I've had it a few times ... it's not THAT improbable ...

yorkie_chris · 23-10-08, 10:10 AM

Especially if you match light spot of tyre with imbalance of wheel on its own

pmapp · 23-10-08, 01:16 PM

Quote:

Originally Posted by yorkie_chris

Especially if you match light spot of tyre with imbalance of wheel on its own

The can be balanced by rotating the tyre on the rim. My mates fancy pants balancing machine for cars can tell you where it needs to be.

24-10-08, 09:44 AM

Quote:

Originally Posted by pmapp

The can be balanced by rotating the tyre on the rim. My mates fancy pants balancing machine for cars can tell you where it needs to be.

Not something I have first hand experience of, but I'm pretty sure I've read certain wheels/tyres have marks on them to allow you to align the light bit of the tyre with the heavy bit of the wheel or vice/versa. That's not to say they won't need balancing, just that it'll be less likely to and less out by default.

northwind · 24-10-08, 10:38 AM

Yeah, ironically really well balanced wheels can need more weights with the tyres on, because usually you counter the imbalance of the tyre with the imbalance of the wheel.

22-10-08, 04:44 PM	#1
Philbo Guest Posts: n/a	Rear wheel balance I just had my tyre refitted to a repaired wheel by a garage local to my work, nice bloke, didn't charge me either! Only thing is he's telling me that the rear wheel of a K7 GSXR 750 doesn't really need balanced...I tried explaining that it had a balance weight fitted before it was repaired, but he was adamant that it wasn't required... So, is he talking b*llcks or not? Any takers? Not sure if I should just re-fit it and see, but I'd rather not find out the hard way.

22-10-08, 04:58 PM	#2
petevtwin650 Guest Posts: n/a	Re: Rear wheel balance Whilst you won't feel it as you would a front wheel inbalance, I'd have thought it would be working the rear shock all the time. I'd not be happy with that myself.

22-10-08, 05:11 PM	#3
Blue_SV650S Guest Posts: n/a	Re: Rear wheel balance Balance it yourself ... stick the spindle in, either end on axle stands, wheel free to rotate. Heavy bit will come to rest at the bottom. Add weight 180deg from it (at the top) ... rinse and repeat until it isn't really settling in any one place any more ... Balancing the rear wheel isn't as important as the front as you won't 'feel' it as much ... As for wearing the shock ... bumps in the road do enough of that for you ... as does the chain flapping about!! Last edited by Blue_SV650S; 22-10-08 at 05:23 PM.

22-10-08, 05:16 PM	#4
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Rear wheel balance Rear doesn't matter so much __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

23-10-08, 10:08 AM	#5
Dangerous Dave Guest Posts: n/a	Re: Rear wheel balance It does need balancing, if he has tested it and says it needs no weights added I would be very surprised!

23-10-08, 10:10 AM	#7
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Rear wheel balance Especially if you match light spot of tyre with imbalance of wheel on its own __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

24-10-08, 10:38 AM	#10
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	Re: Rear wheel balance Yeah, ironically really well balanced wheels can need more weights with the tyres on, because usually you counter the imbalance of the tyre with the imbalance of the wheel. __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

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