Swingarm query

hi johnjojo08

Thanks for the illustrative description on the various swingarms. i own a 2002 TVS fiero. totally stock except for the front doom which has been replaced with a CD dawn headlight bearing halogen power plus bulb and shogun indicators. its time for my chain and sprocket for a replacement. i'm particularly interested a longer swingarm as it gives the bike a balanced look. well my query is: Which aspect of stability would improve with a longer wheelbase? How would it affect the pickup and cornering ability? also would it affect my OE 18" wheels if i happened to fit an RTR 160 swingarm with OE fiero rear mudguard? i also have a futue plan to switch over to yezdi 16" inch wheels. What do u think about this?

thank you

c'mon dude
don't thank me, what did i actually do, nothing!!
you did all the work and your mech...

i didn't do anything, i just showed you the rewinding guy..
waiting for pics man...

well
in my OPINION..

changing the swing arm would not give positive results..
accepted that the bike would seem to be stable, but stability depends upon the center of gravity, not the swing arm length..

the bike's center of gravity is maintained with the swing arm, if you even change it to higher length one, i really don't think it will give out good results..

in f2, you have a play of almost an inch to adjust your wheel length, if i change it even for a centimeter, i get drastically different results..
your cornering stability changes if you increase the length and results in understeer, even with stock play..

vice-versa if you decrease the length..
you guys are talking about increasing 2-3 or even 5 cms..
that's too much in my opinion..

besides just stability, if you change to even the square type of swing arm, it will be heavier..
all of us here know that changing to a 100/90 tyre wears out the chain, front and rear sprocket due to the heavier weight...

what you guys are doing is putting up heavier chain itself, heavier sprocket, heavier square swing arm, and since you have a bigger length swing arm, of course you would go for bigger tyre, maybe a 100 or 120 profile...

calculate the amount of strain you put, if not on the sprockets (the entire kit would would be made to hold it)
then on the engine, gearbox, clutch and everything else..

you shell out that amount of money, and mark my words, you won't be happy....

go ahead if you feel like, its just an opinion...
please forgive me to be harsh if i am.

@Gagandeep
@Vishal
Guys ,i've been thinking of converting the bike to an dc one so that i can put the rtr's TCI/IDI unit .Not the lighting but the engine related aspects.Do you guys have any particular advise regarding this change as i dont know much about electricals.The reason i've been thinking of this change is because the rtr's TCI/IDI unit doesn't have a revv limiter. The RTR's TCI unit is cheaper than the CDI unit so the estimate is that it will be around 1200 bucks with modifications done to the existing wiring . Anything that i have to keep in mind? If yes then what could be the cost of the other changes you guys would suggest?

Anand

[QUOTE
well
in my OPINION..

changing the swing arm would not give positive results..
accepted that the bike would seem to be stable, but stability depends upon the center of gravity, not the swing arm length..

the bike's center of gravity is maintained with the swing arm, if you even change it to higher length one, i really don't think it will give out good results..

in f2, you have a play of almost an inch to adjust your wheel length, if i change it even for a centimeter, i get drastically different results..
your cornering stability changes if you increase the length and results in understeer, even with stock play..

vice-versa if you decrease the length..
you guys are talking about increasing 2-3 or even 5 cms..
that's too much in my opinion..

besides just stability, if you change to even the square type of swing arm, it will be heavier..
all of us here know that changing to a 100/90 tyre wears out the chain, front and rear sprocket due to the heavier weight...

what you guys are doing is putting up heavier chain itself, heavier sprocket, heavier square swing arm, and since you have a bigger length swing arm, of course you would go for bigger tyre, maybe a 100 or 120 profile...

calculate the amount of strain you put, if not on the sprockets (the entire kit would would be made to hold it)
then on the engine, gearbox, clutch and everything else..

you shell out that amount of money, and mark my words, you won't be happy....

go ahead if you feel like, its just an opinion...
please forgive me to be harsh if i am.[/QUOTE]

thanks a lot NANO.

you've saved me a lot of bucks well then i guess whatever i heard about victor rectangular swingarm being lighter, is totally incorrect. the only mod i can do right now is fitting a Yezdi tyre.

Is there anyway i can fit an A150 crankcase and gearbox onto the fiero and enjoy reverse ratio gearing my bike has done nearly 45k when wud u guys recommend decarbonizing the engine? Could someone explain how is an engine flushing carried out? i've had severe problems with the battery being overcharged due to faulty regulator and my rear brake lights bearing the brunt. NEVER EVER USE AMARON 2.5 amps on a FIERO. it screws up the regulator causing it to over charge. i've wasted money on 2 OE regulators each costing Rs 620 before settling in for a local regulator costing Rs 200

@ullal h
Look man ,putting a yezdi tyre would be an even more worse a thing you can do for your bike than putting the rtr swing arm etc.Why? yezdi has a 16 inch wheel .What it'll do is ruin the dynamics of the bike compleatly!! As it is fiero is a disaster waiting to happen , because of its odd design of short wheel base combined with a high handle bar.Which to me ,is a combination for a accident waiting to happen!!!. Why do you think the rtr has a lower handles?
Putting the yezdi tyre will make make the fiero's already rear ward bias even more ridiculous!! The front end is as it is light and with a smaller wheel you will end up loosing road grip !!
The biggest misconception about road grip is that ,its relation to tyres!! The thing which affects road grip the most is the wheel base ,chassis and the biggest contributor is the front end the handle.
Theres a reason why its called "handling of the bike"because the handle has a major impact on the handling.
So the lengthening of the wheelbase is better than shortening it.If the wheel base and rear end is shortened then you have to lower the handle to negate the adverse change in the dynamics of the bike.
Trust me .You are better off with 18 inch wheels than going for a 16 inch one.
The 16 inch tyre wont just affect the dynamics,it'll change the gearing too !!Gearing will become short and engine life will go down!! along with milage and top-end.
Anand

thanks a lot gixxer junkie. i will save a lot more money now my mech always use to say yezdi tyres and OE 18" almost weighed the same, hence wudnt find any difference in mileage. any suggestions regarding fitting A150 crankcase and gearbox onto a fiero

Its nothing mate,we're here to help each other.The weight of the tyre might be same. But more than that ,the gearing and handling will change.Imagine a 100 cc guy will be able to beat you on a stretch, do you want that to happen?or the reduction in engine life ? or the road rash after hitting the tarmac because of a light front end? what it'll do is make the fiero into a short wheel base cruiser and everyone knows cruisers arent good for handling at least a cruiser will have the advantage of a longer wheelbase were as a fiero wont.
Yeah you can swap a150 crank and gearbox .Its a straight fit for the fiero.
PS:short gearing=low (milage,engine life, top-end).

you mean apache gearbox will have a reduced mileage on fiero?

No i was talking about the affects of the yezdi's 16 inch wheel on the fiero.

thank god!!!! Finally there's something for me to look forward for oh no no no way i wanna see a puny 100cc race ahead of me. i want mine to be the ultimate wolf in a sheep's clothing. buddy could u give me rough idea of the price of buying a new A150 crankcase and gearbox and other requirements. i can only do 1 mod this time. either a disc or a new gearbox. gearbox sounds more tasty me

No idea man.You can call up a tvs dealer and find out.Then you will have a max price you can pay for it.Best thing would be to buy it as a full gear and crank case assembly if its available in that manner that is.Otherwise you can source the whole thing from the junk yard .Of course it has its own issues .It will be in all probability from the chop-shop.

the gearbox swap sounds like an expensive issue. hmmmm is there any way to connect a solo RPM meter onto a fiero. just like joel's bike. where can i find a solo RPM meter. where do i connect it in the bike? CDI?

well
as much as i know, rtr is first of all not DC..
its just like fiero, ac/dc
secondly, if you do change the cdi, tci unit, you will face the problem of starting the bike, as classic fiero's stator doesn't have a stater coil in the stator like imjoshee mentioned..

so your bike starts with the pulse generator, with your digital cdi, not the stator...
if you do change it, i think you'll have to find out a way to generate current in the cdi, somewhere which will start the bike or in turn will give high voltage to the spark plug (from battery)...

if you do find it out, let me know...
besides i don't think our bike has rev limiter, maybe i am wrong...

hi nano

any solution for my RPM query