Rear chain sprocket

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DaCs
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Rear chain sprocket

#1

Post by DaCs »

What should be the correct size of a sprocket for panhead and if there is a difference with one of shovelhead? I saw that there are some eBay sprockets with 47 and 51 tooths, but I dont Know the differences, just that some ones have more start power and others betters for highways.

Regards



lpd1snipe
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Re: Rear chain sprocket

#2

Post by lpd1snipe »

Well up until 1973 the only choice on the rear was 51 tooth riveted on the brake drum either mechanical or hydraulic. Then the rear went to disc with a banana caliper. A lot of guys run late wheels and disc on their Pans. Then you have an infinite choice of sprockets. On my 75 shovel I ran a 23 tranny sprocket and a 49 rear. Not quick out of the hole but smooth all day long at 70mph. My first pan in '73 I ran a 25 tooth tranny sprocket. I had a drum top tranny jockey shift so there was clearance. I don't think it would work with a ratchet top.

DaCs
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Re: Rear chain sprocket

#3

Post by DaCs »

Thanks for the help, maybe is important to say that im ussing a 11mm BDL spline shaft belt drive kit with a 24 tooth tranny sprocket, what could be a good match for the rear? 49 or 51?

Thnaks

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Re: Rear chain sprocket

#4

Post by lpd1snipe »

Well, it depends a lot on your riding. I'm not sure how the ratio would work out on the belt setup. Highway riding? Cruising around small towns and such? Carrying a heavy load/ or ole lady on the back? If my memory serves me, original 22T is stock with a 51T rear. It also depends on gears you're running in the Tranny. If you're running a 24T already I'd stick with a 51T on rear. They are easy enough to change out until you dial it in. I used to have different chains and rear sprockets depending upon the scenario whether I was riding local or across the country. There are many on here that will have good ideas also, good luck!

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Re: Rear chain sprocket

#5

Post by RooDog »

This may be of some help, but it only addresses the stock 51T drum brake rear sprocket. You'll need to dig deeper if running a disc brake and the many available sprockets that go with.....

http://victorylibrary.com/tech/gr-bt.htm

....RooDog....

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Re: Rear chain sprocket

#6

Post by panhead »


awander
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Re: Rear chain sprocket

#7

Post by awander »

lpd1snipe wrote:
Thu Oct 31, 2019 7:30 pm
...My first pan in '73 I ran a 25 tooth tranny sprocket. I had a drum top tranny jockey shift so there was clearance. I don't think it would work with a ratchet top.
I've run a 25-tooth transmission sprocket with a footshift ratchet top, with no problems.

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Re: Rear chain sprocket

#8

Post by RUBONE »

awander wrote:
Fri Nov 01, 2019 12:17 am
lpd1snipe wrote:
Thu Oct 31, 2019 7:30 pm
...My first pan in '73 I ran a 25 tooth tranny sprocket. I had a drum top tranny jockey shift so there was clearance. I don't think it would work with a ratchet top.
I've run a 25-tooth transmission sprocket with a footshift ratchet top, with no problems.
That isn't too bad on a rigid if the chain is kept adjusted, tougher on a swingarm...

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Re: Rear chain sprocket

#9

Post by awander »

RUBONE wrote:
Fri Nov 01, 2019 1:45 am
awander wrote:
Fri Nov 01, 2019 12:17 am
lpd1snipe wrote:
Thu Oct 31, 2019 7:30 pm
...My first pan in '73 I ran a 25 tooth tranny sprocket. I had a drum top tranny jockey shift so there was clearance. I don't think it would work with a ratchet top.
I've run a 25-tooth transmission sprocket with a footshift ratchet top, with no problems.
That isn't too bad on a rigid if the chain is kept adjusted, tougher on a swingarm...
Mine was a '64 swingarm setup.

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Re: Rear chain sprocket

#10

Post by DaCs »

Thank everybody, I will continue assembly. Anybody can tell if its necessary this black cover plate? I heard in some post than when is a closed belt you dont need to use it, also nut dont screw complete.

8182

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Re: Rear chain sprocket

#11

Post by Buddhahoodvatoloco »

Get rid of washer, easy peezy. Yea do land the plate.
DaCs wrote:
Wed Nov 06, 2019 9:19 pm
Thank everybody, I will continue assembly. Anybody can tell if its necessary this black cover plate? I heard in some post than when is a closed belt you dont need to use it, also nut dont screw complete.

8182

Regards

DaCs
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Re: Rear chain sprocket

#12

Post by DaCs »

Buddhahoodvatoloco wrote:
Wed Nov 06, 2019 9:33 pm
Get rid of washer, easy peezy. Yea do land the plate.
DaCs wrote:
Wed Nov 06, 2019 9:19 pm
Thank everybody, I will continue assembly. Anybody can tell if its necessary this black cover plate? I heard in some post than when is a closed belt you dont need to use it, also nut dont screw complete.

8182

Regards
Sorry bro, do you mean take off the washer but keep the plate?

Thanks

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Re: Rear chain sprocket

#13

Post by Lowbikemike »

You can safely remove the plate. If the belt wants to walk off you have bigger problems and that plate is just going to tear up the belt

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Re: Rear chain sprocket

#14

Post by RooDog »

My SuperMax does not use an outer belt guide on the front pulley....
DSC01610.JPG
DSC01610.JPG (142.27 KiB) Viewed 514 times
BTW: This just a trial fit-up, the belt will be a little tighter than shown when up and running....
....RooDog....

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Re: Rear chain sprocket

#15

Post by Buddhahoodvatoloco »

Simon que si, run the belt, no vas a perder :lol: :lol: nada
DaCs wrote:
Wed Nov 06, 2019 10:11 pm
Buddhahoodvatoloco wrote:
Wed Nov 06, 2019 9:33 pm
Get rid of washer, easy peezy. Yea do land the plate.
DaCs wrote:
Wed Nov 06, 2019 9:19 pm
Thank everybody, I will continue assembly. Anybody can tell if its necessary this black cover plate? I heard in some post than when is a closed belt you dont need to use it, also nut dont screw complete.

8182

Regards
Sorry bro, do you mean take off the washer but keep the plate?

Thanks

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