Single sided swing arms?

[The_Dover]

What do you guys reckon to them? I think they look very pretty but as an engineer I would think they're pretty hard on the wheel bearings?

[bugjuice]

I've been told that single sided arms 'feel' better than conventional.. I guess they can't be too bad on bearings. Some bikes have used the design for years and years. If it was an issue on parts, they would have knocked it off by now..

can even convert a lot of bikes to SSA now.. cost a small country to do it

[inlinefour]

Not having ever owned one, I don't have an opinion, except for the comment: if it was no good, then they would probably not do it. :mellow:

[Lou Girardin]

Can't see how they are hard on bearings. The stress forces work in the same plane as double sided arms.

[Brian d marge]

What do you guys reckon to them? I think they look very pretty but as an engineer I would think they're pretty hard on the wheel bearings?

they make getting the wheel off easier ,,,other than that ,,,,they do not survive the floatation test ...in order to get the same stiffness as a conventional swing arm, the Section Modulus has to be bigger ...that would be fine if the swing arm was made of thin walled aluminium ,,,but it aint ,,,its cast ...and heavy ....
On its defence ,,,the sprung weight is slightly less ( The weight around the wheel ...I always get these two mixed up ,,,,)
The Situation I see them fitting in ,,,is Non race bike ..( was going to say endurance ,,,but they use conventional S/arms ) as you can remove the wheel easily ...
The bearings would fare the same ( off the top does any one know the bearing number for the rear wheel,,,,,606...???) but the AXIL the bearings ride on would be having a hard time where it bolted into the swingarm ,,due to lack of support ....

Stephen

[kerryg]

Ducati reverted to conventional swingarms on their recent bikes after flirting with S/S on the 916/748. Maybe tells you something, I'm not sure, but if they were that great surely they'd be in widespread use but only a coupla of bikes gottem now (VFR...anything else???). Look very trick though

[Ixion]

Seem to work pretty well in just about every car on the road.

[sAsLEX]

Nothing better, enginnering wise they would prob be heavier due to only having one arm to counter the lateral and torsion stresses( up and downy and side to sidey) , plus they look better and make changing wheels easyier?

[Cibby]

i think they look like shit..

they probalby suck as well

lets all go to the pub and get tanked!!!! :hbd:

[jrandom]

lets all go to the pub and get tanked!!!! :hbd:

Galbraiths, 6pm.

I'll be kicking The Dover's arse and feeding him a pint after.

go on.

[vifferman]

OK.

Single-sided swingarms were introduced by Elf-Honda for endurance racing. They're great for quick wheel changes, but nowadays are mostly for looks.

They're heavier than conventional swingarms for a given stiffness (or else not as stiff if light), and carry a lot more unsprung weight. Hop on a bike with SSSA after riding one with a conventional swingarm, and the first thing you'll notice is the swingarm thumping over small bumps and ripples: the unsprung weight at work.

They were originally fitted to Honda VFRs, but are currently also fitted to Triumphs and MV Agustas.

[zadok]

My NTV did 119,000km without a problem with the bearings. The tyre shop loved replacing my rear tyres, as they were so easy to do. No chain, brakes etc to take off and replace.

[vifferman]

i think they look like shit..
Only the ones on VFR750s and 800s.
The ones on Ducatis, MVs and Triumphs look OK, in my opinion. :yes:

[Ixion]

BMW had 'em yonks ago . Then moved on to even stranger things. Thats Germans for you.

[The_Dover]

Galbraiths, 6pm.

I'll be kicking The Dover's arse and feeding him a pint after.

go on.

I'm not that cheap bitch, I expect a bag of prok scratchings too, yes you heard prok.

[SPORK]

I think they look awesome. 'speshly on MVs, and 916s and the like.

[Cibby]

Galbraiths, 6pm.

I'll be kicking The Dover's arse and feeding him a pint after.

go on.


so there.. so so there..

[TLDV8]

What do you guys reckon to them? I think they look very pretty but as an engineer I would think they're pretty hard on the wheel bearings?

The radial speed at the bearing maybe higher compared to a conventional smaller OD layout and have been known to lock up on Ducati's :mellow: ...they were mainly for endurance racing on bikes like the Elf ????

<img src="http://img.photobucket.com/albums/v63/manurewa/dcp_0002_copy3.jpg" alt="Image hosted by Photobucket.com">

[Phurrball]

so there.. so so there..


Sounds like a fun spectator sport.

Will endeavour to pop in and say 'Hi' and have a beer to rid me of all further thoughts of the Hart v Dworkin jurisprudence debate. (Sorry to continue the thread hijacking...)

[NhuanH]

Ducati reverted to conventional swingarms on their recent bikes after flirting with S/S on the 916/748
Is a production run from 1994 to 2002 a mere flirtation??

This is one of the modern classics you're talking about - can't have been all bad...

[James Deuce]

Ducati reverted to conventional swingarms on their recent bikes after flirting with S/S on the 916/748

Weight. They weigh more than a conventional swingarm to maintain torsional stiffness and therefore create more unsprung weight making the suspension work harder. Also the lateral stiffness of racing bikes is now factored in as suspension, and it is harder to engineer a SSSA with adjustable or different lateral stiffness.

I've had two bikes with SSSAs and the best thing about them was being able to put the bike on a stand and remove the rear wheel to get a new tyre fitted, without screwing up your chain adjustmnet

[Mooch]

They are great for rear wheel cleaning as well for those with out a center stand.

[geoffm]

A friend wanted to fit a VFR400 SS swingarm to a FZR400. The VFR one weighs a ton - must by twice as much as the Fizzer one. Lots of unsprung weight which is bad
Geoff

[T.W.R]

some are worth their pitfalls & some aren't. intended purpose equates to preference of choice. not keen on them myself but this RSV mille is tasty with a single. the flying kiwi team used one in the bike

[Zed]

The ones on Ducatis, MVs and Triumphs look OK, in my opinion. :yes:Well why don't you own one of them then ya twit! :crybaby: Your vifferari looks choice!

I've always like the single swingarm look...on any bike. Ducati 916 being a old favourite!

[DEATH_INC.]

Pretty much been covered,but I still gotta add my two cents :wait:
Very heavy and flexi (even with all that extra weight),but won't place any more stress on bearings and frame than any other design (unless the wheel has a big offset),hard to Imagine,but think about it,the contact point of the tyre is still in the same position in comparison to the swingarm pivot and wheel bearings (if the wheel is offset correctly)so the stresses will be the same.The only part that suffers is the arm itself.

[Sketchy_Racer]

heres my one cent,

having the weight of the swingarm may help to balance the bike out eg the bike may have to much weight on the right side so, they put all the swingarm weight to one side making a perfectly balanced bike.

but then there are all the down falls stated in previous posts, but they still look awesome!

[Kickaha]

the flying kiwi team used one in the bike

Out of a Triumph, most race sidecars use single sided though :yes:

[T.W.R]

yeah it was a triumph 1 from a 955 Daytona, & triumph rearwheels both ends.

how about these HRC Hondas

[NC]

i think they look like shit..

they probalby suck as well

lets all go to the pub and get tanked!!!! :hbd:
Jesus fucken christ, Woman!

Meh :bleh:

[SPman]

Is a production run from 1994 to 2002 a mere flirtation??

This is one of the modern classics you're talking about - can't have been all bad...
Still used on the Multistrada and the S2R/S4R Monstres, I think.
Aprilia use them on the Futura.......