From tymelys22@tadamson.greatxscape.net Fri Sep 21 08:12:48 2001
Subject:Re: Leslie Sims

This varies between Leslies, based on motor condition, belt tension,
and
> how much rubber is left on the "O" rings on the motors. I've found
the
> following on my Leslie --
>
> Upper Lower
>
> Slow to Fast ~1 sec. 7-8 sec.
> Fast to Slow ~1.5 sec. 4-5 sec.
> Off to Fast ~1.25 sec. 8-10 sec.
> Fast to Off ~2 sec. 18-20 sec.
>
A bit of useful info for an ashby.com sort of web-site I would think.

I'm off to my V3 to reset the ramp up/down times. My current settings
are just a little quick off the mark.
Now what's 400 RPM in hz per second .....6.66, sounds a bit slow to
me, Anybody?
Regards Thomas.

--- In CloneWheel@y..., Bruce Wahler wrote:
> Peter,
>
> >Do all Leslie models rotate at the same speed Fast/Slow.?
>
> No, the older ones rotate at Tremolo and Brake! ;^)
>
> I think, however, that you are referring to a "middle" speed, and
no, I'm
> not aware of any stock Leslie that does this.
>
> >Are there any models where the speeds are variable.?With a pot.say.
>
> Motion Sound makes a product called a "Gas Pedal" that does this
for their
> products. I don't know of a similar item for the Leslie. The
newer (DC)
> motor systems have trimpots on them for speed and decay times.
Does anyone
> know how far the pots travel?
>
> >Does anyone know the actual revs per minute at Fast and Slow.?
>
> Quoted from Brad Baker's Hammond-Leslie FAQ:
>
> "When developing the PRO-3, John Fisher measured his 147. He found
that
> the top rotor had a rotation speed of 400 RPM on Tremolo and 48 RPM
on
> Chorale. This was with the belt in the middle pulley position and
with a
> normal belt tension. The lower drum rotated at about 342 RPM on
Tremolo
> and 40 RPM on Chorale." (John, is this accurate?)
>
> >Does anyone know the actual time it takes the drum to reach full
speed and
> >slow speed?.Same goes for the horn.
>
> This varies between Leslies, based on motor condition, belt
tension, and
> how much rubber is left on the "O" rings on the motors. I've found
the
> following on my Leslie --
>
> Upper Lower
>
> Slow to Fast ~1 sec. 7-8 sec.
> Fast to Slow ~1.5 sec. 4-5 sec.
> Off to Fast ~1.25 sec. 8-10 sec.
> Fast to Off ~2 sec. 18-20 sec.
>
> >Is there a web site that gives out the spec.for Leslie's?.
>
> There's a little info on the aforementioned FAQ, but no full
specifications.
>
> Regards,
>
> -BW
>
> --
> Bruce Wahler
> Design Consultant
> Ashby Solutions™
> www.ashbysolutions.com
> CloneWheel Support Group moderator
> 978.386.7389 voice
> 978.964.0547 fax
> bruce@a...