af05e parts

broke-chanic · Post by **broke-chanic** » Mon Oct 19, 2009 12:01 am

Hi all,

I wanted to get some "go fast" parts for my 88' LX. From what i've been reading, is it true that the variator, clutch , and clutch spring from a AF16E or "dio" motor will fit and work on my stock AF05E? Thank you in advance for any advice you give.

bakaracer · Post by **bakaracer** » Mon Oct 19, 2009 12:34 am

yup!they fit.

broke-chanic · Post by **broke-chanic** » Mon Oct 19, 2009 1:40 am

Thanks Bakaracer!

Right on! So I can order up a racing variator, clutch, and clutch spring. Anything else on the dio will work with my engine (AF05E)? I will upgrade to a dio motor when I can find one. Let me know if anyone has one locally (Washington State) for sale.

bakaracer · Post by **bakaracer** » Mon Oct 19, 2009 6:36 am

Mill the head on that bore .030 to up the compression and up the main.

odinxxix · Post by **odinxxix** » Mon Oct 19, 2009 6:55 am

i thought it was said on here that a variator would not fit the af05e spree motor?

Wheelman-111 · Post by **Wheelman-111** » Mon Oct 19, 2009 10:29 am

Greetings:

Odin Confused posted:

i thought it was said on here that a variator would not fit the af05e spree motor?

Ah but all AF05Es are not created equal. In an inexplicable lapse of Engine Code Cohesion, Honda-san stamped the same engine code on the tranny covers of two completely different powerplants. That's why I Stickied the What Engine Code Did You SA? in the Forum's Tech Section; to clarify and distinguish the NQ/05 from the SE/05. Nomenclature matters if you're trying to buy parts...

odinxxix · Post by **odinxxix** » Mon Oct 19, 2009 11:38 am

so if there is the same part number on 2 differenrent engines then how do i tell which is which? guess i need a little furter expination. see mine is the 86 what do you call a variator? guess maybe i dont fully undrstand what that is. see i just have that clutch and bell in the rear and the pulley that the kick start attaches. what does the variator do?

Spreetard · Post by **Spreetard** » Mon Oct 19, 2009 12:21 pm

odinxxix wrote:so if there is the same part number on 2 differenrent engines then how do i tell which is which? guess i need a little furter expination. see mine is the 86 what do you call a variator? guess maybe i dont fully undrstand what that is. see i just have that clutch and bell in the rear and the pulley that the kick start attaches. what does the variator do?

a variator is a wonderous little dohicky that uses centrifugal force (via round weights bieng forced outward against the ramp plate) to alter the relative positions of the driven faces of the front pully, changing the diameter of the pully and thusly changing the ratio at which the rear pully spins in relation to the front pully.

it is a form of CVT (continiously variable transmission) and your spree is completly without one.

imagine that you could take the two halves of the front pully and move them closer together (actually, you can, we call it the pully mod 'round here), placing the belt higher up in the pully. due to the non-stretchiness of the belt, the belt will get pulled further down into the rear pully. in effect, you've now made the front pully bigger, and the rear smaller.
the problem with the pully mod, despite the fact that it can propell my spree to 38mph, is that you are basically taking off in "third gear". acceleration suffers greatly.
a variator moves the pullies around on the fly, allowing you to go fast without waiting forever to get there.

Wheelman-111 · Post by **Wheelman-111** » Mon Oct 19, 2009 1:10 pm

Greetings:

OdinXXIX ax:

what does the variator do?

The Variator uh, ... er, Variates!

Actually in the AF05 Spree/SB engines, the belt sits where it is and stays there, pretty much. Its final-drive ratio is a compromise around that fact and the engine's meager output.

On a variated bike the belt acts like the chain on a multi-speed bike. You start in a "low gear" because the circle around the front pulley is smaller than the circle it makes out back. That means the engine gets in multiple more Whacks for every turn of that rear wheel, just as your legs get more strokes in 1st gear on that 5-speed. This of course means you'll accelerate faster. The Honda-specified "gear ratio" at startoff is 2.4:1.

As the transmission speed increases, the front pulleys close up on the belt and the rear pulleys open up so the belt circle is big in front, small in back. The ratio Honda estimates is a 0.8:1 "overdrive". Once the chore of gathering momentum is complete, the engine can reduce the number of power strokes/wheel turn, and thus a higher top speed is possible. This is just the same as riding that Schwinn in 5th allows you to reach higher groundspeed without spinning those pedals so fast.

As Spreetard said, Sprees are like a 1-speed, fixed ratio transmission. To have useful top speed, the transmission ratio is pretty tall so i'ts like accelerating your car in 3rd gear from a stop. Variated scoots have a 1st gear, then sort of "shift" gradually into top gear while the engine remains within a very narrow range of RPM. From thence we obtain the term:

Constant Velocity Transmisson.

Unlike the Spree engine, which must make some torque from idle on up, Variated engines can be tuned for peak output somewhere in that range that matches the variator's preferred operating RPM.

odinxxix · Post by **odinxxix** » Mon Oct 19, 2009 2:33 pm

so what you guys are saying is if we can change both pullys on the spree then we gain a better top speed. so if the dio pulleys fit the spree why are more people doing this and talking about it. or is it just the rear one fits.?

Wheelman-111 · Post by **Wheelman-111** » Mon Oct 19, 2009 2:36 pm

Greetings:

I think nobody's done it because it would involve significant re-engineering the various shaft thicknesses and lengths, plus the belt cover is too small and too narrow. As I said, nobody's succeeded that I've seen.

odinxxix · Post by **odinxxix** » Mon Oct 19, 2009 3:16 pm

i seen in another thread,taz is "maybe" going to look into it, but yes i see what you mean, even if it worked the kick start for the 86/87 spree may be an issue. plus like you said shafts will have to be reengineered. plus a different cover.

bakaracer · Post by **bakaracer** » Mon Oct 19, 2009 5:11 pm

Its not worth the time or money to make a cvt trans work on a spree.Plus even after you do that your still not going to have that much topend because of the gears and the power of the spree engine is gutless.By the time you finish fabing the cvt to fit the spree,all that money and time and you would have a 70+mph dio swapped in.

Bear45-70 · Post by **Bear45-70** » Mon Oct 19, 2009 8:32 pm

bakaracer wrote:Its not worth the time or money to make a cvt trans work on a spree.Plus even after you do that your still not going to have that much topend because of the gears and the power of the spree engine is gutless.By the time you finish fabing the cvt to fit the spree,all that money and time and you would have a 70+mph dio swapped in.

You seem to be unaware of these.

http://cgi.ebay.com/ebaymotors/ws/eBayI ... MEWAX%3AIT

veedubh20 · Post by **veedubh20** » Mon Oct 19, 2009 8:50 pm

af05e motor throw in the dumpster!

Honda Spree and Elite 50 Forums

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