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Thanx rob Wil get back to u soon senjim

Aqua & Rob45 Thanx. But how do we optimise the muffler design,mounting, exhaust pipe support points & other parameters of exhaust system interms of NVH? future norms r gonna be very tight on noise. Our vehicle's noise mapping showed that the controbution of exhaust system noise (muffler) is...

Thanx wicsteve Sen

Hi all I'm just entering into another stream in automotive - "The exhaust system". Could anyone help me in locating the books / website where i can get details about basic design procedures in exhaust system design of medium & heavy duty trucks. Cheeerrsss Senjim

Thanx all.... i'l try out the toe-out first as this is simple to adjust..& then alter the camber.. Cheerz sen

well the vehicle is having a rigid front axle beam & stub axle where i cannot change the camber setting unless i order for new stub axle specially machined to give lesser camber. Its a rear wheel drive vehicle with a rear wheel track slightly less than front wheel track. Some literatures say...

The 1.5 deg camber is positive. tires are out at top. can i get some more details about tire pyrometer? wat is it meant for actually? sen

thanx. well the vehicle is not a car, it's a minibus with a camber of 1.5 deg & 0mm toe setting sen

Hi all I'm having a minibus with FAW of 3Tons (with 7.5 X 16 bias ply tyres). Its having a serious wear in front tyres outer edge (tyre outer Corners wears making feather like appearance). People say that its due to taking turns at High speeds & this issue is unavoidable & harmless. What do we...

Thanx..... our vehicle has 0mm toe setting. hence i think tht there won't be any toe variation by altering the castor.. But is this 6deg per say is ok?? what will be normal castor in LCVs with rigid front axle beams sen

Hi all I'm having a minibus with a front axle load of 3tons. (power assister steering). The castor angle was 3deg and i had lot of problems like the steering was very light (floating like feeling) at high speeds & poor self centering. Now i've increased it to 6deg & now the steering grip is...

Thanx Mr.Locock. I'll let u know after few trials Cheers sen

Thanx all.. Well, the vehicle is a minibus (7.5Ton GVW) brand new vehicle. By bumpy ride i mean the vehicle oscillates up & down once it crosses a bump.. Should i increase the shock absorber damping.. if so is there any rule to relate suspension stiffness & damping?/ (Its a rigid axle...

Hi all When a vehicle ride is said to be bumpy in a very good road condition, can i say that shock absorber damping co-eff to be increased to reduce it? But the Damping of the Shock absorber theoretically matched to give a comfortable ride. Wat else could cause this in general? Thanx in...

Thanx.. But is this phenomina applicable only to power assisted steering??? Can i quantify the effect of aerodynamic instability by running the bus at higher speeds with steering power assistance disconnected mode?? Cheers Sen

Hi all.. I've come across the performance rating of a minibus (7.5Ton GVW). This is having integral power steering which is reported to have higher steering effort (about 5Kg with a 450mm dia stg wheel) at lower speeds (say 20-30kmph) and a very low stg effort(Controlling of the vehicle becomes...