Aerialscope Turning Radius

[fired223]

Does anyone know the turning radius or the cramp angles for a 75ft aerialscope on a CF chassis? Either single or tandem axle, I know the tandem was a little better.

[commack95]

It's probably horrible compared to a custom chassis.

[fired223]

Yeah, I know it's bad at best but was looking for some numbers.

[THTMAN]

Don't hold me to it, but I think on a tandem with the wider front tires it is only about 28 degrees. If not, it can't be more than 32 degrees.

[WoodbridgeFFII]

I do not know what the specs for the Mack CF are but I have information on a Pierce rechassis. Wheelbase 268", Turning Radius: curb to curb 37'-11" and wall to wall 41'-05". O.A.L. 41'-8", On a tandem rear axle !!

[THTMAN]

Woodbridge - What cab are you using in your O.A.L., the Arrow 67" model? We are probably going with the 268" W.B. on an Arrow 67". At first I questioned the 268" but it should be ok since we currently have a 240" W.B. on the tandem Mack CF which does not turn very well. The better cramp angle should make up for the increase in W.B..

[WoodbridgeFFII]

Woodbridge - What cab are you using in your O.A.L., the Arrow 67" model? We are probably going with the 268" W.B. on an Arrow 67". At first I questioned the 268" but it should be ok since we currently have a 240" W.B. on the tandem Mack CF which does not turn very well. The better cramp angle should make up for the increase in W.B..

The truck committee is still working on the specs, but probably the Arrow 57" with a 258" wheelbase and a 40'-7" O.A.L., They want to reuse the Bangor 40' ground ladder, so this might increase the truck length some! If Seagrave gets the job, they offer a 130" 4 door cab, with a O.A.L. of 41'-5"

[THTMAN]

We want 4 scba seats in the rear so we need the 67" cab instead of the 57". Just a question, why not just go with a 35' ext. instead of the 40' Bangor?

[WoodbridgeFFII]

We want 4 scba seats in the rear so we need the 67" cab instead of the 57". Just a question, why not just go with a 35' ext. instead of the 40' Bangor?

The chief wants to use most of the ground ladders from the Mack scope, on the new chassis. We have apartment buildings that are 3 stories with no rear access road or driveway backed by a hill and woods. A ground ladder is the only way to rescue tenants from a window or balcony. The Scope can only be used for venting, or water stream on these few buildings !

[THTMAN]

I was just wondering if the 5' extra feet (35' vs. 40') was necessary if it meant having to make the truck longer.