dobbers trike

[dobber]

dont recall seeing a center bolt when i stripped the reliant.  know what you mean mike, like the old escorts etc... had a bolt through the springs to hold the leaves together then the bolt head sat in  a hole on the plate welded on the axle.

[nabsim]

sorry to keep pinching your thread dobber but it may be useful to you to

If I am using the original spring plates on the axle tubes as one of the frame attachment points is this sufficient then? I know the axle tubes wont be able to turn but is that going to hold the diff as well?

[zakboy]

no prob, nabsim,that will hold.....yes sorry for taking over your thread dobber 

[dobber]

all info graciously absorbed.
               if the spring plate is still welded to the axle and the trike chassis bolted or welded to that ,then i would concure with zakboy that its plenty strong enough.
I was going to try use the plate origionally on mine but the angle was wrong. It meant the diff would be pointing upward and i needed it straight. but could have put steel spacers or done something to the chassis to make it line up straight.
       moving on, when i line the axle center up with the gearbox would a lazer sat behind the axle running down the center of the diff, middle of the prop and onto the gearbox end work?

[steve brock]

sorry to keep pinching your thread dobber but it may be useful to you to

If I am using the original spring plates on the axle tubes as one of the frame attachment points is this sufficient then? I know the axle tubes wont be able to turn but is that going to hold the diff as well?

Are you stressing the axle mounting it like that? The tubes are quite thin into the diff housing I'd be worried !

[RODeo]

I may not be understanding whats being said here,but surely its mounted in the car on those perches ,so should be ok?

[zakboy]

all info graciously absorbed.
               if the spring plate is still welded to the axle and the trike chassis bolted or welded to that ,then i would concure with zakboy that its plenty strong enough.
I was going to try use the plate origionally on mine but the angle was wrong. It meant the diff would be pointing upward and i needed it straight. but could have put steel spacers or done something to the chassis to make it line up straight.
       moving on, when i line the axle center up with the gearbox would a lazer sat behind the axle running down the center of the diff, middle of the prop and onto the gearbox end work?

Think the laser will do the job just fine Dobber the fin or rib on top of the diff will be the center of the axle if i remmember correctly....... presuming every thing else is running straight through to center of your front wheel when straight

[steve brock]

I may not be understanding whats being said here,but surely its mounted in the car on those perches ,so should be ok?

Hardtail?

[zakboy]

i think steve has a point on a hard tail trike it will be prone to a little more stress unlike the car witch has the springs to absorb some of the stress

[andyrennison]

Ive been drawing and redrawing my design for weeks now, softail and hardtail. 

One thing is sure, the neared to the wheel you can get a fix, the less leverage there will be on the shaft end at the diff. 

The diff should not be experiencing much vertical strain at all when you go over a bump if the load on the axle is transmitted to a fixing vey near to the wheel. As far as i can see, the fixing from the frame to the axle will become a fulcrum, so an upward load from hitting a bump will translate into a downward load at the diff, and vise versa.

There is no reason on a hard tail that the tube ends at the diff can't also be attached to the frame is there?  From what I have seen this is just overkill though.

This is, if I recall my school days aghem..... a long time ago.. a couple.  And as we were taught, "Every couple has its moments" 

[steve brock]

I have over 7 inches each side clamping the axle tube after the spring bracket thingy i want no movement at all.. I also wanted a good few inches to weld my frame to as I have the same as mr manky. Ever considered the weight of the diff bouncing up and down full of oil if it's supported only at the wheel end? Ummm rhino trikes also mentioned loads of trikes snapping half shafts and the tubes cracking the diff housing all scary stuff... Copy a tried design that works my two cents be safe...

[zakboy]

I like a bit of over kill,i believe rhino, remake the tubes on there reliant axle,s with thicker wall tube

[andyrennison]

Steve, that's a good point.  Would that not be the same for the original reliant, which was fixed to the chassis by the springs and the shock slighly inwards from that?

Maybe someone knows enough maths to work this out. I don't

[steve brock]

Maths....AAAAAAAHHHHHHHHHHHHHHHHH

[one arm bandit]

i do its somthing like a=c+9% of b/2   bacically make it as tough as you can