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View Full Version : Evo Sportster Trans Sprocket Question



pedrodeleon
05-15-2013, 9:55 PM
I'm doing Lowbrow's chain conversion on my '93 883, now 1250, 5-speed sportster and with the PBI transmission sprocket #283 there is not enough of the threads sticking out to screw the nut back on. And yes, I didn't forget that it's reverse threaded. As far as I know and can tell everything is stock, the belt pulleys, transmission sprocket spacer, wheel, axel spacers, all stock. According to PBI's sprocket list #283 is for belt to chain conversion with a Spline Width of 0.766", there is a #280 which is for pre-belt drives and has the same overall width of 0.85" and the same offset of 0.5" but a Spline Width of 0.5". So I guess what I'm asking is were there early belt drives that had a smaller spline width than the 1994-2003 belt drives? When I ordered the kit in December Lowbrow's website and the order confirmation said it would fit 1991-2003 sportsters but now it says they'll only fit 1994-2003. Sorry this is so long winded, just trying to give as much info as possible.

Any insight would be appreciated, here's a pic of the bike too. Just painted it last week:

<a href="http://www.flickr.com/photos/78321135@N02/8735995023/" title="paint3 by pedrodelion, on Flickr"><img src="http://farm8.staticflickr.com/7282/8735995023_654fa71736_z.jpg" width="640" height="480" alt="paint3"></a>

xbmxxx
05-15-2013, 10:47 PM
Sorry I cant be of any help, but thats a nice looking ride! Which 1250 did you go with? Are you happy with it?

pedrodeleon
05-15-2013, 11:24 PM
Thanks man, I went with the NRHS kit, it just worked out best for me and Dan was easy to get ahold of and answered my questions quickly. I've heard mixed reviews on then as we'll but everything in the kit was good and I haven't had any issues yet. Only have 450 miles on it so far do its just about broke in from the 400-500 they recommend but I'm happy with it so far, haven't really opened it up too much yet though.

blackjx
05-15-2013, 11:39 PM
I feel like 1994 or so was the beginning of belts being standard. I know the first few years of the 5 speed were still chain driven. It sounds like you're gonna need to get the half inch one. Just make sure the main drive gear didn't get knocked into the case. It happens.

pedrodeleon
05-15-2013, 11:55 PM
That's what I was thinking, thanks man. I'm 99% sure the drive gear didn't get knocked in because I was just riding with the belt last week but I'll double check.

pedrodeleon
05-16-2013, 10:23 AM
Incase anyone else runs into this problem with pre-1994 belt drives the part that needs changed is the spacer behind the Trans sprocket. When I got home from work last night I measured it and found it is 0.849" which is H-D part #33334-85. The spacer I need is 0.600" and is H-D part #33344-94. This will slide the sprocket in enough to thread the nut on and align it with the rear sprocket. It appears early belt drives had the wider spacer and a pulley with a Spline Width of only 0.5" as opposed to the 0.766" of the 94+ pulleys.

xsrick
05-16-2013, 10:50 AM
Good to know

brooklynbomber
05-16-2013, 11:55 AM
Incase anyone else runs into this problem with pre-1994 belt drives the part that needs changed is the spacer behind the Trans sprocket. When I got home from work last night I measured it and found it is 0.849" which is H-D part #33334-85. The spacer I need is 0.600" and is H-D part #33344-94. This will slide the sprocket in enough to thread the nut on and align it with the rear sprocket. It appears early belt drives had the wider spacer and a pulley with a Spline Width of only 0.5" as opposed to the 0.766" of the 94+ pulleys.

nice bit of advice to share. Bike looks great dude, that rear tire looks nice on yours too!

usmc50lx
05-16-2013, 12:54 PM
Incase anyone else runs into this problem with pre-1994 belt drives the part that needs changed is the spacer behind the Trans sprocket. When I got home from work last night I measured it and found it is 0.849" which is H-D part #33334-85. The spacer I need is 0.600" and is H-D part #33344-94. This will slide the sprocket in enough to thread the nut on and align it with the rear sprocket. It appears early belt drives had the wider spacer and a pulley with a Spline Width of only 0.5" as opposed to the 0.766" of the 94+ pulleys.

Also be careful with the oil seal the 1994-up is a larger diameter spacer than the pre-1994 so you will need the appropriate seal as well.....

pedrodeleon
05-16-2013, 5:58 PM
Thanks brooklynbomber!

usmc50lx, you're correct, the oil seal for pre-94 main-shafts that goes with spacer #33334-85 is part #12050. The oil seal that goes with spacer #33344-94 is part #12067A as far as I can tell. I'm going down to my local H-D dealer here in a bit to pick one up and I'll post again once I know for sure it's the right one. Also as far as I can tell both use the same quad oil seal, part#11165. If anybody know if that's right or wrong please say so.

usmc50lx
05-16-2013, 8:46 PM
Thanks brooklynbomber!

usmc50lx, you're correct, the oil seal for pre-94 main-shafts that goes with spacer #33334-85 is part #12050. The oil seal that goes with spacer #33344-94 is part #12067A as far as I can tell. I'm going down to my local H-D dealer here in a bit to pick one up and I'll post again once I know for sure it's the right one. Also as far as I can tell both use the same quad oil seal, part#11165. If anybody know if that's right or wrong please say so.

Yep that is correct.....but you might be ok on the newer spacer and seal, but when I went hunting the factory discontinued the #33334-85 spacer and my hookup checked the Harley network and No one had it in stock in the country! found mine at a Big Dog dealer here in town! Just an FYI

pedrodeleon
05-16-2013, 11:14 PM
Well, I found both the 33344-94 spacer and the 12067 seal at the local H-D dealer so when I get home at midnight tonight I'll stick everything on and see how it fits.

BrokenSprocketGarage
05-17-2013, 5:20 AM
What was the first year of the belt drive XL's? I think you have a 1993 M.Y.? You might have a 5 spd that had a belt conversion, those were common .
I have part numbers at my shop for the drive belt pulley spacer seal kits that HD offers for both the big twins and XL's. Will post up later.

pedrodeleon
05-17-2013, 8:00 PM
What was the first year of the belt drive XL's? I think you have a 1993 M.Y.? You might have a 5 spd that had a belt conversion, those were common .
I have part numbers at my shop for the drive belt pulley spacer seal kits that HD offers for both the big twins and XL's. Will post up later.

From the vin mine is a 1993 883, Sportster Deluxe but who knows? It had mags when I got it and didn't the deluxe have laced wheels? Anyways, what I've gathered from searching around is that either 93 only had belts on some models and used a belt pulley with a spline width the same as a stock chain sprocket. My factory service manual is for 1993-1994 XLH models and only shows belt drives.

Gustenhoff
01-26-2014, 6:31 PM
From the vin mine is a 1993 883, Sportster Deluxe but who knows? It had mags when I got it and didn't the deluxe have laced wheels? Anyways, what I've gathered from searching around is that either 93 only had belts on some models and used a belt pulley with a spline width the same as a stock chain sprocket. My factory service manual is for 1993-1994 XLH models and only shows belt drives.

Thanks Man. I think this just saved me a headache. I'm doing a hard tail conversion and just ordered the same kit from lowbrow hoping I could figure it out. I have the same service manual (My bike is a 93) and the primary cover was totally confusing to get off because of the clutch cover and vague wording. Thanks again and sick bike you got there.

patdoody
01-26-2014, 9:09 PM
Glad you posted this. I ordered the lowbrow kit for my 92 5 speed, and was wondering why they had it listed for 94+ bikes.

MrEd
01-27-2014, 7:10 PM
Just for some background info on when sportys went from chains to belts; beginning in 1991, only the 1200 and 883 Deluxe went to a belt. It wasn't until 1993 that the balance of the sportster line up went to a belt final. The shop manual for 91/ 92 covers those two years only and gives both chain and belt specifics.
HD did offer a conversion kit to change from a chain to a belt for 86 to 90 4-speed models (40110-89) and another kit for 91 to 92 5-speed models to go from chain to belt (40111-91A). These kits ranged from $300 to $400 depending on which one you got.

That satisfies my quota of nearly useless information for the week.